Published by "OilGasScientificResearchProject" Institute of State Oil Company of Azerbaijan Republic (SOCAR).
SOCAR Proceedings is published from 1930 and is intended for oil and gas industry specialists, post-graduate (students) and scientific workers.
Journal is indexed in Web of Science (Emerging Sources Citation Index), SCOPUS and Russian Scientific Citation Index, and abstracted in EI’s Compendex, Petroleum Abstracts (Tulsa), Inspec, Chemical Abstracts database.
E. H. Ahmadov
The article is devoted to the study of the relationship between the uncertainty of the volume of hydrocarbon reserves of Productive series in the South Caspian Basin and geological-technical criteria. As we know, the accuracy of the assessment of field reserves is directly affected by the degree of study of the calculation parameters. The study of these parameters depends to varying degrees on the geological and physical characteristics of this field. The main purpose of the study was to define the impact of these geological and technical factors on the uncertainty of the volume of hydrocarbon reserves. By classifying the fields according to their geological and physical characteristics, it is possible to analyze the relationship between geological and technical factors and the uncertainty of the volume of hydrocarbon reserves. As in all basins, the uncertainty of the volume of hydrocarbon reserves in the South Caspian Basin (SCB) depends on the degree of study of the calculated parameters of the fields (oil and gas field, effective thickness, porosity, oil and gas saturation, formation pressure, formation temperature, etc.). During the research, great importance was attached to the application of the cluster method. The Euclidean distance of the cluster analysis was used to identify homogeneous groups. Taking into account the general results of the research process, it should be noted that the uncertainty of the volume of Productive series (PS) hydrocarbon reserves in the SCB, in addition to the level of accuracy of calculation parameters, also depends on other geological and technical factors (depth of deposits, depth of sea, complexity of structure, number of tectonic blocks and development objects).
Keywords: field; formation; uncertainty; geological and technical factors; complexity of structure; reserve.
The article is devoted to the study of the relationship between the uncertainty of the volume of hydrocarbon reserves of Productive series in the South Caspian Basin and geological-technical criteria. As we know, the accuracy of the assessment of field reserves is directly affected by the degree of study of the calculation parameters. The study of these parameters depends to varying degrees on the geological and physical characteristics of this field. The main purpose of the study was to define the impact of these geological and technical factors on the uncertainty of the volume of hydrocarbon reserves. By classifying the fields according to their geological and physical characteristics, it is possible to analyze the relationship between geological and technical factors and the uncertainty of the volume of hydrocarbon reserves. As in all basins, the uncertainty of the volume of hydrocarbon reserves in the South Caspian Basin (SCB) depends on the degree of study of the calculated parameters of the fields (oil and gas field, effective thickness, porosity, oil and gas saturation, formation pressure, formation temperature, etc.). During the research, great importance was attached to the application of the cluster method. The Euclidean distance of the cluster analysis was used to identify homogeneous groups. Taking into account the general results of the research process, it should be noted that the uncertainty of the volume of Productive series (PS) hydrocarbon reserves in the SCB, in addition to the level of accuracy of calculation parameters, also depends on other geological and technical factors (depth of deposits, depth of sea, complexity of structure, number of tectonic blocks and development objects).
Keywords: field; formation; uncertainty; geological and technical factors; complexity of structure; reserve.
References
DOI: 10.5510/OGP2023SI100827
E-mail: elvin.ahmadov.h@mail.ru
Т. X. Niyazov1, H. I. Shakarov1, А. I. Khuduzade2, R. N. Suleymanova1, N. А. Hasanova1
In this thesis, based on geological and geophysical data from zone of uplift in Northwestern part of Shimali Absheron (Northern Absheron), it was considered clarifying the geological structure involved in the Pliocene section, in particular, the Podkirmaky suite (PK). It was established that, several non-anticline (stratigraphic and tectonically screened) traps that are formed in the traced zones of pinching out of the Podkirmaky formation (PK). As a result of the studies, the reservoir properties of the deposits corresponding to Podkirmaky suite (PK) and the Nadkirmaky sandy suite (NKP) (which are characterized by high NetToGross) were studied. A re interpretation of seismic sections (in time and depth) of past and recent years was carried out, together with well data, and a structural map of Podkirmaky suite (PK) was build.
Keywords: uplift zone; seismic exploration; geological structure; productive series (PS); pinch-out zone; non-anticline trap; oil and gas content; seismic section in time and in depth.
In this thesis, based on geological and geophysical data from zone of uplift in Northwestern part of Shimali Absheron (Northern Absheron), it was considered clarifying the geological structure involved in the Pliocene section, in particular, the Podkirmaky suite (PK). It was established that, several non-anticline (stratigraphic and tectonically screened) traps that are formed in the traced zones of pinching out of the Podkirmaky formation (PK). As a result of the studies, the reservoir properties of the deposits corresponding to Podkirmaky suite (PK) and the Nadkirmaky sandy suite (NKP) (which are characterized by high NetToGross) were studied. A re interpretation of seismic sections (in time and depth) of past and recent years was carried out, together with well data, and a structural map of Podkirmaky suite (PK) was build.
Keywords: uplift zone; seismic exploration; geological structure; productive series (PS); pinch-out zone; non-anticline trap; oil and gas content; seismic section in time and in depth.
References
DOI: 10.5510/OGP2023SI100828
E-mail: tarverdi.niyazov@socar.az
N. A. Pronin
This paper presents the results of lithofacies analysis of log curves and sedimentological description of the core material of wells from the Karaton field to determine the environmental condition and determine the similarity of the behavior of log curves. The field is located in the Karaton-Tengiz zone of uplifts, which are characterized by a rather complicated environmental conditions. Based on typical models of facies groups and a description of the core material of the Jurassic deposits, it was possible to identify zones of development of sandy deposits and determine the main environmental condition.
Keywords: lithology; sedimentology; facies; electrofacies; generic model; depositional environment.
This paper presents the results of lithofacies analysis of log curves and sedimentological description of the core material of wells from the Karaton field to determine the environmental condition and determine the similarity of the behavior of log curves. The field is located in the Karaton-Tengiz zone of uplifts, which are characterized by a rather complicated environmental conditions. Based on typical models of facies groups and a description of the core material of the Jurassic deposits, it was possible to identify zones of development of sandy deposits and determine the main environmental condition.
Keywords: lithology; sedimentology; facies; electrofacies; generic model; depositional environment.
References
DOI: 10.5510/OGP2023SI100861
E. M. Suleymanov, S. H. Novruzova, I. N. Aliyev, Y. Y. Şmonçeva
Enhancing of spacer fluids compositions for well cementing
Currently, almost all researchers believe that turbulent flow is the most preferred displacement mode. However, when it comes to cementing, where practical limitations prevent obtaining turbulent flow, opinions begin to differ. In general, either «very slow» flow or «very fast» flow is recommended for all wells in the annulus. There are mainly two types of buffer liquids used – «wash» and «space». The first buffer liquid is «wash», which washes away and removes the remnants of drilling fluid, clay cake, etc., and the second is «space», a thicker system, entering the cavities, cleans them and also pulls out all the remnants of the first buffer liquid to the surface. The first buffer fluid is «wash», basically a thinner, of the drilling fluid, which may contain surfactants - surfactants or liquid-restraining agents, the preferred mode of motion is turbulent. The second buffer liquid – «space», can mainly contain polymeric materials, weighting agents, the preferred mode of movement is laminar (cork). The choice of these fluids is determined by their chemical compatibility with drilling and cement slurries, their effectiveness in removing the drilling fluid. Very important postulates adopted by almost all leading oil firms are given. A new and very affordable composition of the buffer liquid of the following composition has been proposed: «wash» - FLS - 4%, diesel fuel - 2%, the rest is water - 9%; «space» - carboxymethylcellulose (CMC) - 0.5%, bentonite solution with a density of 1030 kg/m3 - 99.5%. If necessary, these buffer fluids can be weighted, for example, with barite, to an average density between the densities of drilling and cement slurries in a given well..
Keywords: buffer fluid; drilling fluid; cement mortar;turbulent flow; mode of motion; mud cake; centralizer; casing string.
Currently, almost all researchers believe that turbulent flow is the most preferred displacement mode. However, when it comes to cementing, where practical limitations prevent obtaining turbulent flow, opinions begin to differ. In general, either «very slow» flow or «very fast» flow is recommended for all wells in the annulus. There are mainly two types of buffer liquids used – «wash» and «space». The first buffer liquid is «wash», which washes away and removes the remnants of drilling fluid, clay cake, etc., and the second is «space», a thicker system, entering the cavities, cleans them and also pulls out all the remnants of the first buffer liquid to the surface. The first buffer fluid is «wash», basically a thinner, of the drilling fluid, which may contain surfactants - surfactants or liquid-restraining agents, the preferred mode of motion is turbulent. The second buffer liquid – «space», can mainly contain polymeric materials, weighting agents, the preferred mode of movement is laminar (cork). The choice of these fluids is determined by their chemical compatibility with drilling and cement slurries, their effectiveness in removing the drilling fluid. Very important postulates adopted by almost all leading oil firms are given. A new and very affordable composition of the buffer liquid of the following composition has been proposed: «wash» - FLS - 4%, diesel fuel - 2%, the rest is water - 9%; «space» - carboxymethylcellulose (CMC) - 0.5%, bentonite solution with a density of 1030 kg/m3 - 99.5%. If necessary, these buffer fluids can be weighted, for example, with barite, to an average density between the densities of drilling and cement slurries in a given well..
Keywords: buffer fluid; drilling fluid; cement mortar;turbulent flow; mode of motion; mud cake; centralizer; casing string.
References
DOI: 10.5510/OGP2023SI100860
E-mail: sudaba.novruzova@mail.ru
Р. S. Ibrahimov
Study of gas and liquid separation in a closed drilling well with self-propelled drilling rigs
The article deals with the gas release in the process of drilling wells from jack-up drilling rigs. The article attempts to analyze the nature of the change in pressure at the blowout of the preventer after its closure due to gas releases on jack-up drilling rigs. Numerous observations in drilling rigs have shown that the pressure value increases rapidly to a maximum, then gradually decreases and stabilizes at a certain value. There are cases when the value of pressure increases rapidly. Then, without decreasing, it stabilizes. It is proposed that the phenomenon of gas segregation in a well, leading to an increase in pressure, has theoretical and practical significance. In addition, in a real well, a change in bottom hole pressure can occur under various conditions, if the rate of pressure growth due to gas segregation in the riser pipes is greater than the pressure rate due to the work of the formation, while part of the fluid from the well must be squeezed out into the formation.
Keywords: well drilling; gas release; complications; open fountain; drilling fluid; preventer; gas segregation; oil and gas.
The article deals with the gas release in the process of drilling wells from jack-up drilling rigs. The article attempts to analyze the nature of the change in pressure at the blowout of the preventer after its closure due to gas releases on jack-up drilling rigs. Numerous observations in drilling rigs have shown that the pressure value increases rapidly to a maximum, then gradually decreases and stabilizes at a certain value. There are cases when the value of pressure increases rapidly. Then, without decreasing, it stabilizes. It is proposed that the phenomenon of gas segregation in a well, leading to an increase in pressure, has theoretical and practical significance. In addition, in a real well, a change in bottom hole pressure can occur under various conditions, if the rate of pressure growth due to gas segregation in the riser pipes is greater than the pressure rate due to the work of the formation, while part of the fluid from the well must be squeezed out into the formation.
Keywords: well drilling; gas release; complications; open fountain; drilling fluid; preventer; gas segregation; oil and gas.
References
DOI: 10.5510/OGP2023SI100867
E-mail: rafiq.ibrahimov@yahoo.com
A. A. Abbasov1, E. M. Abbasov2, Sh. Z. Ismayilov3, A. A. Suleymanov3
A modified Capacitance-Resistance Model (CRM), with Forchheimer two terms law non-linear Productivity Indexes (PI), has been suggested to evaluate efficiency of waterflooding in heterogeneous reservoirs. The model represents the intra-formation processes in heterogeneous reservoirs more accurately, thus it can be used for production forecasting and waterflood monitoring. CRM model is based on continuity equation between production and injection, and has several additional advantages. The technique does not require sophisticated geological and hydrodynamics numerical simulation modeling, which would require expensive computing time and based on actual hydrodynamic data. The model adequately describes depletion process and can be used for production forecasting and waterflooding mechanism. Capacitance-resistance model with non-linear productivity index has been tested against numerical model as well as actual production data. Additionally, non-linear productivity index based CRM model was compared against the CRM model with linear productivity index function.
Keywords: production, modeling, waterflooding efficiency, capacitance-resistance model, non-linear productivity index, Forchheimer two terms law.
A modified Capacitance-Resistance Model (CRM), with Forchheimer two terms law non-linear Productivity Indexes (PI), has been suggested to evaluate efficiency of waterflooding in heterogeneous reservoirs. The model represents the intra-formation processes in heterogeneous reservoirs more accurately, thus it can be used for production forecasting and waterflood monitoring. CRM model is based on continuity equation between production and injection, and has several additional advantages. The technique does not require sophisticated geological and hydrodynamics numerical simulation modeling, which would require expensive computing time and based on actual hydrodynamic data. The model adequately describes depletion process and can be used for production forecasting and waterflooding mechanism. Capacitance-resistance model with non-linear productivity index has been tested against numerical model as well as actual production data. Additionally, non-linear productivity index based CRM model was compared against the CRM model with linear productivity index function.
Keywords: production, modeling, waterflooding efficiency, capacitance-resistance model, non-linear productivity index, Forchheimer two terms law.
References
DOI: 10.5510/OGP2023SI100820
B. A. Suleimanov, N. I. Huseynova
For monitoring of the zonal impact on the productive strata of oil fields in order to increase oil recovery, it is proposed to use a cartographic method for presenting the distribution of hydrodynamic indicators with the subsequent calculation of the corresponding information indicators. The cartographic method makes it possible to visualize the distribution of indicators characterizing the filtration of formation fluid in a productive formation at a certain time point. The algorithm for calculating information indicators used to conduct a comparative analysis of the hydrodynamic indicators distribution in the impact area for a certain time period allows diagnosing the evolution of the distribution of hydrodynamic indicators both at the all horizon of oilfield and for its individual zones before and after the planned impact. The proposed method, based on the relationship between the productivity of wells operated under interference, and the current geological and hydrodynamic of the reservoir state, can be recommended for assessing the effectiveness of the impact on the productive layers of oil fields. The implementation of the proposed method is shown on the example of the development data of the «Neft Dashları» and «Pirallahı» fields (Azerbaijan). The analysis of the obtained results showed that the impact on the formation, taking into account the assessment of the distribution of hydrodynamic and information indicators, contributes to the choice of a rational mode of stimulation on the prodactive strata.
Keywords: reservoir; enhanced oil recovery; zonal impact; well productivity; diagnostics; filtration; monitoring; streamlines.
For monitoring of the zonal impact on the productive strata of oil fields in order to increase oil recovery, it is proposed to use a cartographic method for presenting the distribution of hydrodynamic indicators with the subsequent calculation of the corresponding information indicators. The cartographic method makes it possible to visualize the distribution of indicators characterizing the filtration of formation fluid in a productive formation at a certain time point. The algorithm for calculating information indicators used to conduct a comparative analysis of the hydrodynamic indicators distribution in the impact area for a certain time period allows diagnosing the evolution of the distribution of hydrodynamic indicators both at the all horizon of oilfield and for its individual zones before and after the planned impact. The proposed method, based on the relationship between the productivity of wells operated under interference, and the current geological and hydrodynamic of the reservoir state, can be recommended for assessing the effectiveness of the impact on the productive layers of oil fields. The implementation of the proposed method is shown on the example of the development data of the «Neft Dashları» and «Pirallahı» fields (Azerbaijan). The analysis of the obtained results showed that the impact on the formation, taking into account the assessment of the distribution of hydrodynamic and information indicators, contributes to the choice of a rational mode of stimulation on the prodactive strata.
Keywords: reservoir; enhanced oil recovery; zonal impact; well productivity; diagnostics; filtration; monitoring; streamlines.
References
DOI: 10.5510/OGP2023SI100821
E-mail: nahide.huseynova@socar.az
M. М. Irani, V. P. Telkov
One of the most commonly used methods for EOR in recent years is the water-alternating-gas (WAG) method, WAG injection is an oil recovery method aiming to improve displacement ratio, sweep efficiency and adjust the alignment of displacement in different layers to improve oil recovery and pressure maintenance. The main mechanism of it is 1) bettering the mobility control, 2) improvement of sweep efficiency (comparing to gas methods) and 3) the displacement efficiency (comparing to waterflooding). Many studies have been done in the past, but due to the increasing hard-to-recover field and facing difficulties during the production, the traditional WAG is facing problems that need to be coupled with. Implementation of new combinational methods and changes in the injection process to meet the needs have been developed during the last two decades. In this study, a simulation investigation has been done to compare proposed changes in the injection process to find the optimal injection scheme for the high heterogeneity - low permeability field. After analyzing the output of the simulation, the results show that each of the technologies has its advantages and disadvantages, and need to be applied according to the field constraints and requirement.
Keywords: water alternating gas (WAG); enhanced oil recovery; reservoir simulation; injection scheme; heterogeneity; permeability.
One of the most commonly used methods for EOR in recent years is the water-alternating-gas (WAG) method, WAG injection is an oil recovery method aiming to improve displacement ratio, sweep efficiency and adjust the alignment of displacement in different layers to improve oil recovery and pressure maintenance. The main mechanism of it is 1) bettering the mobility control, 2) improvement of sweep efficiency (comparing to gas methods) and 3) the displacement efficiency (comparing to waterflooding). Many studies have been done in the past, but due to the increasing hard-to-recover field and facing difficulties during the production, the traditional WAG is facing problems that need to be coupled with. Implementation of new combinational methods and changes in the injection process to meet the needs have been developed during the last two decades. In this study, a simulation investigation has been done to compare proposed changes in the injection process to find the optimal injection scheme for the high heterogeneity - low permeability field. After analyzing the output of the simulation, the results show that each of the technologies has its advantages and disadvantages, and need to be applied according to the field constraints and requirement.
Keywords: water alternating gas (WAG); enhanced oil recovery; reservoir simulation; injection scheme; heterogeneity; permeability.
References
DOI: 10.5510/OGP2023SI100822
B. A. Shilanbayev1, S. V. Ishangaliyev2, Zh. T. Zhetruov2, K. N. Shayakhmet2, M. Koldei1
This article discusses the development of an intelligent System for the operational maintenance of the level of oil and gas production as part of the implementation of the Strategy for the development of information technologies for data management and the Program for the development of digitalization of fields of JSC «NC Kazmunaigas». The advantage of the system is multitasking and using almost all the data coming from production facilities in real time. The main task of the system is to manage a group of wells taking into account their mutual influence to maximize oil production and reduce the negative impact of uncoordinated well operation without damaging the rational system of field development. A significant feature of the developed system is the creation of complex algorithms for predicting the main development indicators using artificial neural networks based on a combination of CRM (capacity resistance model), FFNN (neural network with direct communication), MBM (material balance model) and BFGS (Broyden-Fletcher-Goldfarb-Shanno algorithm) methods. During the pilot test on 10 wells, the modes were adjusted according to the recommendations issued by the system and the system confirmed its operability and effectiveness of application.
Keywords: virtual flow meter; labor productivity; return distribution; machine learning; rational development system; neural networks.
This article discusses the development of an intelligent System for the operational maintenance of the level of oil and gas production as part of the implementation of the Strategy for the development of information technologies for data management and the Program for the development of digitalization of fields of JSC «NC Kazmunaigas». The advantage of the system is multitasking and using almost all the data coming from production facilities in real time. The main task of the system is to manage a group of wells taking into account their mutual influence to maximize oil production and reduce the negative impact of uncoordinated well operation without damaging the rational system of field development. A significant feature of the developed system is the creation of complex algorithms for predicting the main development indicators using artificial neural networks based on a combination of CRM (capacity resistance model), FFNN (neural network with direct communication), MBM (material balance model) and BFGS (Broyden-Fletcher-Goldfarb-Shanno algorithm) methods. During the pilot test on 10 wells, the modes were adjusted according to the recommendations issued by the system and the system confirmed its operability and effectiveness of application.
Keywords: virtual flow meter; labor productivity; return distribution; machine learning; rational development system; neural networks.
References
DOI: 10.5510/OGP2023SI100824
E-mail: s.ishangaliyev@niikmg.kz
D. A. Mirzoev1,2, O. L. Arkhipova1, M. N. Mansurov1, T. I. Lapteva1, L. A. Kopaeva1
The essence of the method of expert assessments lies in the rational organization of the analysis of the problem by experts with the quantitative assessment of judgments and the processing of their results. The offshore deep-sea oil and gas field was chosen as the object of study and a survey of experts was conducted on the options for choosing fields depending on the criteria related to a particular group of indicators, such as: natural and climatic conditions, arrangement, development, and safety of the field. At the next stage of the study, for each of the groups of indicators, an analysis of variance was carried out, designed to find the level of influence of the criteria on the presented fishing options. The criteria were compared with each other and which of them differed from each other were determined. The study showed that the use of statistical analysis methods makes it possible to formalize the procedures for collecting, summarizing and analyzing the opinions of specialists in order to transform them into the most convenient form for making an informed decision.
Keywords: mathematical statistics; expert evaluation; statistical analysis; offshore oil and gas industry; deep-water fields.
The essence of the method of expert assessments lies in the rational organization of the analysis of the problem by experts with the quantitative assessment of judgments and the processing of their results. The offshore deep-sea oil and gas field was chosen as the object of study and a survey of experts was conducted on the options for choosing fields depending on the criteria related to a particular group of indicators, such as: natural and climatic conditions, arrangement, development, and safety of the field. At the next stage of the study, for each of the groups of indicators, an analysis of variance was carried out, designed to find the level of influence of the criteria on the presented fishing options. The criteria were compared with each other and which of them differed from each other were determined. The study showed that the use of statistical analysis methods makes it possible to formalize the procedures for collecting, summarizing and analyzing the opinions of specialists in order to transform them into the most convenient form for making an informed decision.
Keywords: mathematical statistics; expert evaluation; statistical analysis; offshore oil and gas industry; deep-water fields.
References
DOI: 10.5510/OGP2023SI100825
E-mail: o_arkhipova@vniigaz.gazprom.ru
R. N. Bakhtizin1, R. Z. Nurgaliev1, I. G. Fattakhov2,3, A. S. Semanov3, A. I. Semanova3
Designing horizontal wells in carbonate reservoirs using geological and hydrodynamic modeling tools
The paper considers one of the ways to determine the optimal arrangement of production and injection horizontal wells in the Vereisky horizon, which formations are composed of interbedded carbonate and terrigenous rocks. The geological and production analysis of the drilled wells was carried out. Multistage hydraulic fracturing was used to increase the proportion of reserves involved in development. When drilling horizontal wells, using hydraulic fracturing, it is possible not only to increase the drainage zone of the target reservoir, but also to involve the above- and below-lying layers in the development. The performed analysis confirmed the high efficiency of horizontal wells with multistage fracturing. Various variants of arrangement of production and injection horizontal wells were designed and modeled using the geological and hydrodynamic model of one of the object’s sections. Based on the performed analysis and calculations, the most effective schemes of well arrangements were selected.
Keywords: carbonate rocks; horizontal well; forecast; modeling; multistage fracturing; injection; pressure maintenance system.
The paper considers one of the ways to determine the optimal arrangement of production and injection horizontal wells in the Vereisky horizon, which formations are composed of interbedded carbonate and terrigenous rocks. The geological and production analysis of the drilled wells was carried out. Multistage hydraulic fracturing was used to increase the proportion of reserves involved in development. When drilling horizontal wells, using hydraulic fracturing, it is possible not only to increase the drainage zone of the target reservoir, but also to involve the above- and below-lying layers in the development. The performed analysis confirmed the high efficiency of horizontal wells with multistage fracturing. Various variants of arrangement of production and injection horizontal wells were designed and modeled using the geological and hydrodynamic model of one of the object’s sections. Based on the performed analysis and calculations, the most effective schemes of well arrangements were selected.
Keywords: carbonate rocks; horizontal well; forecast; modeling; multistage fracturing; injection; pressure maintenance system.
References
DOI: 10.5510/OGP2023SI100829
E-mail: i-fattakhov@rambler.ru
M. A. Jamalbayov1, N. A. Valiyev2
A new concept of the dynamic systems imitation-modeling: theory and application
A new concept of imitation-modeling of dynamic systems is being developed. The basic idea and terms of the concept, the principles of creating an imitation-modeling of a physical process based on interconnected objects are presented. The proposed concept is applied to modeling the process of developing a volatile oil reservoir operated by a well equipped with a submersible rodless pump in the «pumpwell-reservoir» system. Algorithms have been developed to optimize the pump suspension depth and the duration of the waiting and pumping periods in continuous and periodic modes.
Keywords: integral modeling; computer simulation; imitation-modeling; volatile oil; submersible-pump; pump-well-reservoir system.
A new concept of imitation-modeling of dynamic systems is being developed. The basic idea and terms of the concept, the principles of creating an imitation-modeling of a physical process based on interconnected objects are presented. The proposed concept is applied to modeling the process of developing a volatile oil reservoir operated by a well equipped with a submersible rodless pump in the «pumpwell-reservoir» system. Algorithms have been developed to optimize the pump suspension depth and the duration of the waiting and pumping periods in continuous and periodic modes.
Keywords: integral modeling; computer simulation; imitation-modeling; volatile oil; submersible-pump; pump-well-reservoir system.
References
DOI: 10.5510/OGP2023SI100830
E-mail: mehemmed.camalbeyov@socar.az
A. I. Ermolayev1, S. I. Efimov1, P. V. Pyatibratov1, E. D. Minikhanov1, N. V. Dubinya2, A. M. Leonova2
The purpose of the work is to generate a methodology to substantiate the limit values of parameters that determine the technological mode of operation for production gas wells. The basis for this is the data of laboratory geomechanical and filtration core studies and the results of mathematical modeling. Determination of filtration-capacitance and strength characteristics of weakly cemented (weakly consolidated) cores of Cenomanian and Turonian ages was carried out under reservoir conditions (in terms of baric parameters). The research was aimed at identifying the limitations, the violation of which leads to the destruction of the reservoir. A modification of the methodology for determining the marginal depression based on laboratory core studies and mathematical modeling using the Coulomb-Mohr destruction criterion is proposed.
Keywords: gas wells; pressure; depression; core; stress; formation; destruction.
The purpose of the work is to generate a methodology to substantiate the limit values of parameters that determine the technological mode of operation for production gas wells. The basis for this is the data of laboratory geomechanical and filtration core studies and the results of mathematical modeling. Determination of filtration-capacitance and strength characteristics of weakly cemented (weakly consolidated) cores of Cenomanian and Turonian ages was carried out under reservoir conditions (in terms of baric parameters). The research was aimed at identifying the limitations, the violation of which leads to the destruction of the reservoir. A modification of the methodology for determining the marginal depression based on laboratory core studies and mathematical modeling using the Coulomb-Mohr destruction criterion is proposed.
Keywords: gas wells; pressure; depression; core; stress; formation; destruction.
References
DOI: 10.5510/OGP2023SI100832
A. V. Soromotin, D. A. Martyushev, I. B. Stepanenko
Application of machine learning methods to forecast the rate of horizontal wells
The paper summarizes and provides an overview of the analytical equations of fluid inflow to horizontal wells. Using the actual data, it was found that analytical equations do not allow reliably calculating and predicting the flow rate of horizontal wells and it is necessary to apply new approaches to solve this problem. The paper proposes a fundamentally new approach to forecasting the flow rate of horizontal wells, based on the application and training of machine learning methods. A fully connected neural network of direct propagation was used as a model. When comparing the actual and calculated using a fully connected neural network of direct propagation of horizontal well flow rates, their high convergence with a correlation coefficient of more than 0.8 was established. In further studies, it is planned to expand the sample and parameters included in the model to improve the calculation and forecasting of horizontal wells in various geological and physical conditions of their operation.
Keywords: horizontal well; oil flow rate; linear regression; artificial neural network.
The paper summarizes and provides an overview of the analytical equations of fluid inflow to horizontal wells. Using the actual data, it was found that analytical equations do not allow reliably calculating and predicting the flow rate of horizontal wells and it is necessary to apply new approaches to solve this problem. The paper proposes a fundamentally new approach to forecasting the flow rate of horizontal wells, based on the application and training of machine learning methods. A fully connected neural network of direct propagation was used as a model. When comparing the actual and calculated using a fully connected neural network of direct propagation of horizontal well flow rates, their high convergence with a correlation coefficient of more than 0.8 was established. In further studies, it is planned to expand the sample and parameters included in the model to improve the calculation and forecasting of horizontal wells in various geological and physical conditions of their operation.
Keywords: horizontal well; oil flow rate; linear regression; artificial neural network.
References
DOI: 10.5510/OGP2023SI100833
N. I. Нuseynova1, N. M. Safarov1, G. N. Safarova2
The article, in order to increase the efficiency of field development, it is proposed to apply water-oil emulsion to the formation along with dewatering. In order to evaluate the results of the complex impact on the oil layer, the method based on the mathematical modeling of fluid percolation in the layer by fixing the flow lines was used. By calculating and visualizing the distribution of hydrodynamic indicators of fluid filtration flows in the formation environment, the fast-acting mathematical model allows for a fairly accurate assessment of the current state of the impact process on productive formations. The proposed method for assessing the current state of liquid percolation during the impact of water-oil emulsion on the oil layer with local detailed solution , in the case of uncertainty - when solving the diagnostic problems that arise due to the lack of geophysical and hydrodynamic (physical, mechanical, lithological and other) data of the current indicators characterizing the reservoir system can prevent many difficulties.
Keywords: оil layer flooding; water emulsion inpact; stream lines; displacement front; viscosity of water-oil emulsion; diagnostic; filtration.
The article, in order to increase the efficiency of field development, it is proposed to apply water-oil emulsion to the formation along with dewatering. In order to evaluate the results of the complex impact on the oil layer, the method based on the mathematical modeling of fluid percolation in the layer by fixing the flow lines was used. By calculating and visualizing the distribution of hydrodynamic indicators of fluid filtration flows in the formation environment, the fast-acting mathematical model allows for a fairly accurate assessment of the current state of the impact process on productive formations. The proposed method for assessing the current state of liquid percolation during the impact of water-oil emulsion on the oil layer with local detailed solution , in the case of uncertainty - when solving the diagnostic problems that arise due to the lack of geophysical and hydrodynamic (physical, mechanical, lithological and other) data of the current indicators characterizing the reservoir system can prevent many difficulties.
Keywords: оil layer flooding; water emulsion inpact; stream lines; displacement front; viscosity of water-oil emulsion; diagnostic; filtration.
References
DOI: 10.5510/OGP2023SI100834
E. F. Veliyev1,2, A. A. Aliyev1
Laboratory evaluation of novel nano composite gel for water shut-off
When extracting oil and gas from underground reservoirs, fluids such as water, CO2, polymer solutions, and surfactant solutions are often injected to displace the hydrocarbon resources. However, the presence of high-permeable layers, channels, and fractures in the reservoirs can hinder the efficiency of the displacement processes. The displacing fluids tend to channel through these high-permeability features, leaving behind significant amounts of hydrocarbon in low-permeability zones, which remain unswept. Recent developments in nanocomposite hydrogels, such as PPGs, have shown promising results for water shutoff due to their thermal stability and deformability. In this study, a preformed particle gel with nano additive (NC-PPG) was developed through free radical polymerization of AM, AMPS, and nanoclay. Nanoclay nanoparticles were found to act as physical cross-linkers in the polymer network, leading to smaller pore sizes and slightly enhanced thermal stability. The addition of an appropriate amount of nanoclay nanoparticles significantly improved the swelling rate and mechanical properties of NC-PPG. The presented composition also showed good salt tolerance, as evidenced by its compatibility with highly saline formation water and the plugging rate and RRF of 0.25% NC-PPG solution, which were 94.3% and 17.6, respectively, in the sand-pack flowing experiment. These results suggest that NC-PPG has the potential to effectively plug the high permeability zones in mature reservoirs, making it a suitable candidate for water shutoff treatment and enhanced oil recovery (EOR) strategies. The ability of NC-PPG to improve sweep efficiency and control water flow in reservoirs can contribute to more efficient oil production and reservoir management practices.
Keywords: enhanced oil recovery; water shut-off; plugging efficiency; preformed particle gel; nanoclay; sweep efficiency.
When extracting oil and gas from underground reservoirs, fluids such as water, CO2, polymer solutions, and surfactant solutions are often injected to displace the hydrocarbon resources. However, the presence of high-permeable layers, channels, and fractures in the reservoirs can hinder the efficiency of the displacement processes. The displacing fluids tend to channel through these high-permeability features, leaving behind significant amounts of hydrocarbon in low-permeability zones, which remain unswept. Recent developments in nanocomposite hydrogels, such as PPGs, have shown promising results for water shutoff due to their thermal stability and deformability. In this study, a preformed particle gel with nano additive (NC-PPG) was developed through free radical polymerization of AM, AMPS, and nanoclay. Nanoclay nanoparticles were found to act as physical cross-linkers in the polymer network, leading to smaller pore sizes and slightly enhanced thermal stability. The addition of an appropriate amount of nanoclay nanoparticles significantly improved the swelling rate and mechanical properties of NC-PPG. The presented composition also showed good salt tolerance, as evidenced by its compatibility with highly saline formation water and the plugging rate and RRF of 0.25% NC-PPG solution, which were 94.3% and 17.6, respectively, in the sand-pack flowing experiment. These results suggest that NC-PPG has the potential to effectively plug the high permeability zones in mature reservoirs, making it a suitable candidate for water shutoff treatment and enhanced oil recovery (EOR) strategies. The ability of NC-PPG to improve sweep efficiency and control water flow in reservoirs can contribute to more efficient oil production and reservoir management practices.
Keywords: enhanced oil recovery; water shut-off; plugging efficiency; preformed particle gel; nanoclay; sweep efficiency.
References
DOI: 10.5510/OGP2023SI100835
E-mail: elchinf.veliyev@socar.az
E. F. Veliyev1,2, A. D. Shovgenov3
Novel water shut off method based on temporary plugging agent and gel composition
This article presents the laboratory development of a novel rigless, self-selective water shut-off technique. The technique involves the design and pumping of three different fluids through fractured core plugs in a specific sequence. The first fluid serves to temporarily block porous medium while moving freely through fractures. The second fluid is a cross-linking polymer gelant, which is injected immediately after the first fluid at a pressure below the fracture pressure of the formation to block fractures. An enzyme-based chemical breaker solution, serving as the third fluid, is evaluated for removing the filter-forming materials. The treatment and flow studies are conducted using a high-pressure, high-temperature core flow setup. In conclusion, the developed water control technology presented in this study offers a low-cost solution for fractured and high-anomaly wells. The technology is particularly effective when there is a significant permeability contrast between the oil-bearing matrix and water-conductive fractures. The results demonstrate a successful blockage of fracture, with minimal contamination of porous medium. The study also highlights important factors to consider for the field application of this technology. It is recommended to conduct customized laboratory investigations under simulated reservoir conditions prior to implementing the technology in the field. This will help optimize the treatment design and ensure its effectiveness in real-world applications.
Keywords: water shut-off; temporary blocking agent; gel composition; coreflood; permeability contrast.
This article presents the laboratory development of a novel rigless, self-selective water shut-off technique. The technique involves the design and pumping of three different fluids through fractured core plugs in a specific sequence. The first fluid serves to temporarily block porous medium while moving freely through fractures. The second fluid is a cross-linking polymer gelant, which is injected immediately after the first fluid at a pressure below the fracture pressure of the formation to block fractures. An enzyme-based chemical breaker solution, serving as the third fluid, is evaluated for removing the filter-forming materials. The treatment and flow studies are conducted using a high-pressure, high-temperature core flow setup. In conclusion, the developed water control technology presented in this study offers a low-cost solution for fractured and high-anomaly wells. The technology is particularly effective when there is a significant permeability contrast between the oil-bearing matrix and water-conductive fractures. The results demonstrate a successful blockage of fracture, with minimal contamination of porous medium. The study also highlights important factors to consider for the field application of this technology. It is recommended to conduct customized laboratory investigations under simulated reservoir conditions prior to implementing the technology in the field. This will help optimize the treatment design and ensure its effectiveness in real-world applications.
Keywords: water shut-off; temporary blocking agent; gel composition; coreflood; permeability contrast.
References
DOI: 10.5510/OGP2023SI100837
E-mail: elchinf.veliyev@socar.az
E. F. Veliyev1,2, G. V. Aliyeva3
Laboratory analysis of self-healing cement composition based on calcium lactate and bacteria
The research aims to evaluate the feasibility of using bacteria-based self-healing concrete using Portland cement and assess the effect of temperature on its performance. The results showed that the inclusion of calcium lactate and bacteria in the mixture accelerates the gain in compressive strength, but after 28 days of curing, the healing agent has no impact on the overall compressive strength value of the mixture. The crack width distribution analysis revealed an inverse relationship between crack width and self-healed area, with wider cracks having lower self-healing rates. Most of the healing occurs within 15 days, with only a small fraction healing between day 15 and 60 days. The study also showed that low temperatures do not produce self-healing in tested samples, and 25°C increases the self-healed area for all crack widths. Finally, chromatography tests of submerged water reveal that reaction to seal the cracks takes calcium from some external source.
Keywords: self-healing cement; carbon emission; bacteria; calcium lactate; Portland cement.
The research aims to evaluate the feasibility of using bacteria-based self-healing concrete using Portland cement and assess the effect of temperature on its performance. The results showed that the inclusion of calcium lactate and bacteria in the mixture accelerates the gain in compressive strength, but after 28 days of curing, the healing agent has no impact on the overall compressive strength value of the mixture. The crack width distribution analysis revealed an inverse relationship between crack width and self-healed area, with wider cracks having lower self-healing rates. Most of the healing occurs within 15 days, with only a small fraction healing between day 15 and 60 days. The study also showed that low temperatures do not produce self-healing in tested samples, and 25°C increases the self-healed area for all crack widths. Finally, chromatography tests of submerged water reveal that reaction to seal the cracks takes calcium from some external source.
Keywords: self-healing cement; carbon emission; bacteria; calcium lactate; Portland cement.
References
DOI: 10.5510/OGP2023SI100838
E-mail: elchinf.veliyev@socar.az
Kh. M. Ibrahimov
Thermal-gas-chemical method for oil production intensification in low-temperature reservoirs
A method is proposed for developing an oil deposit based on low-temperature oil oxidation as a result of initiating an exothermic reaction and subsequent injection of oxygen-containing gas into the reservoir. In the proposed method, which includes successive injection of aqueous solutions of potassium salt and sulfuric acid into the well, light oil or gas condensate is injected into the deposit before injection of the aqueous acid solution. Further, after injection of an aqueous solution of sulfuric acid into the formation, air is pumped with further pushing with water. In the method, a 16% aqueous solution of potassium dichromate is used as an aqueous solution of potassium salt. The application of the proposed technology led to an increase in the temperature in the reservoir above 200 °C and an increase in the displacement efficiency up to 19.7%.
Keywords: thermal chemical treatment; production stimulation; low-temperature reservoir; enhanced oil recovery; low temperature oxidation; oil displacement.
A method is proposed for developing an oil deposit based on low-temperature oil oxidation as a result of initiating an exothermic reaction and subsequent injection of oxygen-containing gas into the reservoir. In the proposed method, which includes successive injection of aqueous solutions of potassium salt and sulfuric acid into the well, light oil or gas condensate is injected into the deposit before injection of the aqueous acid solution. Further, after injection of an aqueous solution of sulfuric acid into the formation, air is pumped with further pushing with water. In the method, a 16% aqueous solution of potassium dichromate is used as an aqueous solution of potassium salt. The application of the proposed technology led to an increase in the temperature in the reservoir above 200 °C and an increase in the displacement efficiency up to 19.7%.
Keywords: thermal chemical treatment; production stimulation; low-temperature reservoir; enhanced oil recovery; low temperature oxidation; oil displacement.
References
DOI: 10.5510/OGP2023SI100839
E-mail: khidir.ibrahimov@socar.az
V. M. Shamilov1, E. R. Babayev2, P. Sh. Mammadova2, I. G. Ayyubov3, E. G. Hajiyev1
Some aspects of the use of carbon nanotubes for enhanced oil recovery
In the presented work, the effect of modified carbon nanotubes on various reagents used to increase the oil recovery factor (ORF) was studied. It was found that nanotubes contribute to the stabilization of the foam in the studied reagents, which had a positive effect on the increase in the recovery factor.
Keywords: nanotechnologies; enhanced oil displacement, carbon nanotubes.
In the presented work, the effect of modified carbon nanotubes on various reagents used to increase the oil recovery factor (ORF) was studied. It was found that nanotubes contribute to the stabilization of the foam in the studied reagents, which had a positive effect on the increase in the recovery factor.
Keywords: nanotechnologies; enhanced oil displacement, carbon nanotubes.
References
DOI: 10.5510/OGP2023SI100863
E-mail: Valeh.Shamilov@socar.az
O. A. Kolenchukov1, T. N. Kolenchukova1, K. A. Bashmur1, V. V. Bukhtoyarov1,2, R. B. Sergienko3
It is known that roughness affects the drop in hydraulic pressure, increasing the resistance force. The formation of a boundary layer on rough surfaces significantly affects fluid dynamics and the process of heat exchange in convective flows, causing disturbances in the velocity profile and affecting surface resistance, turbulent mixing and heat exchange. Despite the fact that there are a large number of experimental and CFD studies in the field of studying turbulent flow, there is no full-fledged review of this issue. In view of this, it is necessary to systematize studies related to the study of the influence of a rough surface during turbulent fluid flow. In most cases, roughness is quantified only using a single scaling parameter – the equivalent roughness height of a grain of sand, which can be expressed based on statistical parameters. This article presents an overview and generalization of data on the parameters and characteristics of rough surfaces. The correlation method is considered using the standard deviation in the slope of the roughness profile, as well as the effect of the secondary flow on the flow of the coolant in a closed space. The results of this study can be used in the intensification of heat transfer in thermal destruction reactors using intensifiers in the form of discretely rough surfaces.
Keywords: discrete-rough surfaces; thermal contact surface;и rough surface; turbulent flow; pyrolysis reactor; thermal destruction; heat exchanger.
It is known that roughness affects the drop in hydraulic pressure, increasing the resistance force. The formation of a boundary layer on rough surfaces significantly affects fluid dynamics and the process of heat exchange in convective flows, causing disturbances in the velocity profile and affecting surface resistance, turbulent mixing and heat exchange. Despite the fact that there are a large number of experimental and CFD studies in the field of studying turbulent flow, there is no full-fledged review of this issue. In view of this, it is necessary to systematize studies related to the study of the influence of a rough surface during turbulent fluid flow. In most cases, roughness is quantified only using a single scaling parameter – the equivalent roughness height of a grain of sand, which can be expressed based on statistical parameters. This article presents an overview and generalization of data on the parameters and characteristics of rough surfaces. The correlation method is considered using the standard deviation in the slope of the roughness profile, as well as the effect of the secondary flow on the flow of the coolant in a closed space. The results of this study can be used in the intensification of heat transfer in thermal destruction reactors using intensifiers in the form of discretely rough surfaces.
Keywords: discrete-rough surfaces; thermal contact surface;и rough surface; turbulent flow; pyrolysis reactor; thermal destruction; heat exchanger.
References
DOI: 10.5510/OGP2023SI100823
K. A. Goridko1,2, V. S. Verbitsky2, O. S. Kobzar2
The current conditions of well operation with electric submersible pumps are characterized by the need for gas separation at the pump intake, and natural separation can be insufficient to provide the technological rate of well, so gas separators are used as part of the electric submersible pump unit. The literature review and the results of our research demonstrate that currently there is no unified methodology for selecting gas separators of various designs for the operating well conditions, equipped with ESP units of different series. That is, the selection of a gas separator as part of ESP unit is based on partial data on performance and design of the gas separator, which is unacceptable, and in some cases dangerous due to the possible failure mode. The paper describes a methodology to predict the efficiency of a gas separator as part of a downhole electric submersible pump unit based on the summary of a significant set of statistical information from publications, results of our own experimental and field studies.
Keywords: gas separator; gas content; electric submersible pump unit; ESP; separation efficiency; well oil production; separation coefficient.
The current conditions of well operation with electric submersible pumps are characterized by the need for gas separation at the pump intake, and natural separation can be insufficient to provide the technological rate of well, so gas separators are used as part of the electric submersible pump unit. The literature review and the results of our research demonstrate that currently there is no unified methodology for selecting gas separators of various designs for the operating well conditions, equipped with ESP units of different series. That is, the selection of a gas separator as part of ESP unit is based on partial data on performance and design of the gas separator, which is unacceptable, and in some cases dangerous due to the possible failure mode. The paper describes a methodology to predict the efficiency of a gas separator as part of a downhole electric submersible pump unit based on the summary of a significant set of statistical information from publications, results of our own experimental and field studies.
Keywords: gas separator; gas content; electric submersible pump unit; ESP; separation efficiency; well oil production; separation coefficient.
References
DOI: 10.5510/OGP2023SI100831
E-mail: goridkokirill@gmail.com
М. А. Gadjiyev1, I. G. Guseynov2, U. М. Gadjiyeva1
Stress-strain state and load ability of compressed pipe-concrete elements
In the article are presented the results of stress-strain state and the bearing capacity of compression pipe-concrete elements studies. The studies were carried by using a fractional-rational diagram of relationship between stress and strain proposed in the Eurocode for a compressed concrete core inside a pipe and a symmetrical two-line diagram with limited area of fluidity for any values of an arbitrary flexibility of element and eccentricity of compressive force. On the carried research basis has been developed an effective numerical technique for determining the stress-strain state and the bearing capacity of compressed pipe-concrete elements. In calculation technique constructing, the task solution is reduced to system of nonlinear algebraic equations solving, relative to the deformation level in the most stressed section of the compressed concrete core section and the position of the neutral axis in this section. The efficiency of the proposed calculation method has been verified by numerous numerical experiments. It is shown that depending on the element's flexibility and the compressive force's eccentricity, at the moment of bearing capacity loss, the operation of the steel pipe can be both elastic and elasticplastic, and this is determined only by calculations using the proposed general method.
Keywords: concrete; steel pipe; «load-deflection» graph; deformation; stress; deflection; stress-strain state; bearing capacity; eccentricity.
In the article are presented the results of stress-strain state and the bearing capacity of compression pipe-concrete elements studies. The studies were carried by using a fractional-rational diagram of relationship between stress and strain proposed in the Eurocode for a compressed concrete core inside a pipe and a symmetrical two-line diagram with limited area of fluidity for any values of an arbitrary flexibility of element and eccentricity of compressive force. On the carried research basis has been developed an effective numerical technique for determining the stress-strain state and the bearing capacity of compressed pipe-concrete elements. In calculation technique constructing, the task solution is reduced to system of nonlinear algebraic equations solving, relative to the deformation level in the most stressed section of the compressed concrete core section and the position of the neutral axis in this section. The efficiency of the proposed calculation method has been verified by numerous numerical experiments. It is shown that depending on the element's flexibility and the compressive force's eccentricity, at the moment of bearing capacity loss, the operation of the steel pipe can be both elastic and elasticplastic, and this is determined only by calculations using the proposed general method.
Keywords: concrete; steel pipe; «load-deflection» graph; deformation; stress; deflection; stress-strain state; bearing capacity; eccentricity.
References
DOI: 10.5510/OGP2023SI100836
E-mail: ismayil.huseynov@socar.az
A. M. Gafarov1, P. G. Suleymanov2
The article analyzes the main characteristics of the reliability indicators of machines and equipment operated in emergency situations and extreme conditions. Methods for their evaluation are discussed using various methods of probability theory and mathematical statistics.
Keywords: machines; equipment; reliability; emergency; extreme conditions; evaluation; probability theory; mathematical statistics.
The article analyzes the main characteristics of the reliability indicators of machines and equipment operated in emergency situations and extreme conditions. Methods for their evaluation are discussed using various methods of probability theory and mathematical statistics.
Keywords: machines; equipment; reliability; emergency; extreme conditions; evaluation; probability theory; mathematical statistics.
References
DOI: 10.5510/OGP2023SI100864
E-mail: p.suleymanov@azdemtteti.az
A. M. Gafarov1, P. G. Suleymanov2
The article presents the results of research on the influence of various technological factors on the reliability of machines and equipment operated in emergency situations and extreme conditions. The regularities obtained are discussed.
Keywords: machines; equipment; technological factors; extreme conditions; reliability; emergency; working efficiency.
The article presents the results of research on the influence of various technological factors on the reliability of machines and equipment operated in emergency situations and extreme conditions. The regularities obtained are discussed.
Keywords: machines; equipment; technological factors; extreme conditions; reliability; emergency; working efficiency.
References
DOI: 10.5510/OGP2023SI100865
E-mail: p.suleymanov@azdemtteti.az
G. S. Suleymanov1, J. K. Guliyev2
Innovative mechanisms for improving oil production efficiency
The paper discusses innovative mechanisms for increasing EOR factor. For this purpose, the paper describes an innovative algorithm of efficient use of existing production facilities in the oil industry. For this purpose, the research puts forward innovative methods of workover efficiency improvement and a new methodical approach based on them. The paper outlines complex innovative and economic mechanisms for increasing EOR factor. At the same time, the role of the new methodical approach proposed EOR factor is science-based, both theoretically and practically.
Keywords: production; innovations; fixed assets; overhaul; efficiency; oil recovery.
The paper discusses innovative mechanisms for increasing EOR factor. For this purpose, the paper describes an innovative algorithm of efficient use of existing production facilities in the oil industry. For this purpose, the research puts forward innovative methods of workover efficiency improvement and a new methodical approach based on them. The paper outlines complex innovative and economic mechanisms for increasing EOR factor. At the same time, the role of the new methodical approach proposed EOR factor is science-based, both theoretically and practically.
Keywords: production; innovations; fixed assets; overhaul; efficiency; oil recovery.
References
DOI: 10.5510/OGP2023SI100826
E-mail: suleymanov.q.@gmail.com
E. A. Guseynov1, A. A. Tagiyev2
Economic effect of foreign direct investment in the oil and gas sector of Azerbaijan
The article studies the economic effect of foreign direct investment in the oil and gas sector of Azerbaijan. As a study result it was determined that it is most appropriate to direct foreign investments to the sectors capable of creating high added value. Since these investments are mainly oriented to industrial production and processing sector, there are wide export opportunities here. For the economic development of the oil and gas industry, it is advisable to increase the qualitative component of foreign direct investment. In general, the directions of foreign direct investment in the oil and gas sector correspond to the interests of the Republic of Azerbaijan, which means that it is necessary to increase the efficiency of foreign direct investment. This is possible due to optimization of strategic and operational business processes at the level of investor companies. Thus, as a result of the study, it can be said that the inflow of foreign direct investment in the oil and gas sector has had a positive impact on economic growth in the country as a whole.
Keywords: oil and gas sector; foreign investment; foreign direct investment; investment environment assessment; economic development.
The article studies the economic effect of foreign direct investment in the oil and gas sector of Azerbaijan. As a study result it was determined that it is most appropriate to direct foreign investments to the sectors capable of creating high added value. Since these investments are mainly oriented to industrial production and processing sector, there are wide export opportunities here. For the economic development of the oil and gas industry, it is advisable to increase the qualitative component of foreign direct investment. In general, the directions of foreign direct investment in the oil and gas sector correspond to the interests of the Republic of Azerbaijan, which means that it is necessary to increase the efficiency of foreign direct investment. This is possible due to optimization of strategic and operational business processes at the level of investor companies. Thus, as a result of the study, it can be said that the inflow of foreign direct investment in the oil and gas sector has had a positive impact on economic growth in the country as a whole.
Keywords: oil and gas sector; foreign investment; foreign direct investment; investment environment assessment; economic development.
References
DOI: 10.5510/OGP2023SI100862
E. G. Mamedova, А. I. Mirgeydarova
Economic assessment of the present state of cluster formation in Azerbaijani oil and gas companies
Clusters attach great importance to supporting the activities of business entities in various sectors of the economy, as well as accelerating their development, economic and social development of regions throughout the country, modernization of the infrastructure base of the economy. Observation of the processes of economic development taking place in the countries of the world shows that in order to ensure high economic development, competitive sectors of the economy, a system of enterprises producing large volumes of exportoriented products, comprehensive economic development is of paramount importance. In general, at present the role of optimal models of economic development in the rise of developed countries to this level is great, and it is in these processes that the institution of the cluster is of paramount importance.
Keywords: clustering; innovative models of clusters; innovative industrial cluster; fuel and energy complex; infrastructure of the economy.
Clusters attach great importance to supporting the activities of business entities in various sectors of the economy, as well as accelerating their development, economic and social development of regions throughout the country, modernization of the infrastructure base of the economy. Observation of the processes of economic development taking place in the countries of the world shows that in order to ensure high economic development, competitive sectors of the economy, a system of enterprises producing large volumes of exportoriented products, comprehensive economic development is of paramount importance. In general, at present the role of optimal models of economic development in the rise of developed countries to this level is great, and it is in these processes that the institution of the cluster is of paramount importance.
Keywords: clustering; innovative models of clusters; innovative industrial cluster; fuel and energy complex; infrastructure of the economy.
References
DOI: 10.5510/OGP2023SI100866
E-mail: arzu.mirgeydarova@mail.ru