SOCAR Proceedings

SOCAR Proceedings

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.

G.V.Konesev, M.I.Zhestovskih, G.A.Teptereva, R.A.Ismakov

Ufa State Petroleum Technological University, Ufa, Russia

Study of the combined effect of the reagent FHLC and sodium silicate on the parameters of drilling mud stabilization

In article questions of compatibility of properties on regulation of parameters of boring flushing liquids of the composite additive consisting of complex reagent of the ferro-chromelignosulfonate and silicate of sodium are considered. Planning of an experiment by a standard technique is carried out, the regression equation is received. Influence of three factors is investigated: the FHLS chemical reagents, silicate of sodium and heat treatment on optimization parameters application of a full-factorial experiment by Boxing Wilson of the plan of type 2k (k=3, number of factors) has determined the prospects of application of composition when drilling the clay intervals inclined to loss of stability of the well trunk walls.

Keywords: ferrochromlignosulfonate; sodium silicate; regression equation; clay solution; optimization parameters.

DOI: 10.5510/OGP20180200344


G.G.Ishbaev, M.R.Dilmiev, R.R.Ishbaev, S.S.Lozhkin, D.V.Petrov

«BURINTEKH», Ltd, Ufa, Russia

The technology for chemical removal of the filter cake «BARKBEETLE»

The article is dedicated to wellbore productive section treating technology for the purpose of speed-up bringing the well on to stable production and facilitating stimulation. Indicated purposes can be achieved by means of treating well with special reagents which have destructive action on the mud residues and filter cake. The article considers the development of the technological fluid «BARKBEETLE», its testing and application during well construction.

Keywords: BARKBEETLE; filter cake destruction; well development; breaker.

DOI: 10.5510/OGP20180200345


Yu.D.Konnov, D.I.Sidorkin, M.Ya.Khabibullin

Ufa State Petroleum Technological University, Ufa, Russia

Mechanization of technological process of round-trip operations in well servicing and workover

The article presents an analysis of the existing technologies of tripping operations during workover and well servicing, an analysis is given the number of lowered and pulled tubing for shift team using the existing technology. A mobile mechanized complex is proposed for mechanization of tripping operations in workover and well servicing, and the operating procedure for lowering and pulled pipes is shown in detail. The number of lowered (pulled) pipes using the proposed complex is calculated. A speed comparison is made using the standard and proposed technology. The economic effect of the implementation
of the proposed complex is also presented.

Keywords: round-trip operations; well servicing; workover; tubing; wells.

DOI: 10.5510/OGP20180200346


N.A.Garris, E.A.Akchurina, R.N.Bakhtizin

Ufa State Petroleum Technological University, Ufa, Russia

Conjugate heat transfer problem with cold injection from the ground surface

At present, in order to protect the pipeline from the permafrost effects, the option of above-ground pipeline laying is increasingly used. Though, despite preventive measures, such as the freezing of soils with the help of seasonally acting cooling devices (SACDs), the way of pipelining in the heaving soils has not proved to be a reliable method. It is shown that the rate of freezing with the generation of an ice-soil cylinder around a thermostabilization device can be determined by solving the conjugate heat transfer problem of the "atmosphere – SACD – soil" system by the method of stationary state transition. Because the rate of soil freezing depends on the temperature regime of the SCD, and, consequently, the moisture migration flow entering to the freezing zone also depends, then it seems possible to control the process of the soil heaving generation. This can be achieved by adopting special constructive solutions or by regulating the operation of the SCDs, avoiding the rates of freezing that are close to extreme, at which the generation of a pingo is possible.

Keywords: permafrost; pingos; seasonally acting cooling devices; conjugate heat transfer problem; buckling of above-ground pipeline supports.

DOI: 10.5510/OGP20180200347


V.L.Malyshev, E.F.Moiseeva, Yu.V.Kalinovsky

Ufa State Petroleum Technological University, Ufa, Russia

Comparative study of the determination of thermodynamic properties of methane based on the Peng-Robinson equation of state and the molecular dynamics simulations

The paper presents a comparative study of the compressibility factor, isobaric heat capacity, and the Joule-Thomson differential coefficient determination for methane using the Peng-Robinson equation of state, its modification with shift parameter, the molecular dynamics method and experimental data. It is shown that the use of the modified Peng-Robinson equation of state with the shift parameter and the molecular dynamics method gives a minimal error in the considered range of the pressures and temperatures in determining the compressibility factor. The isobaric heat capacity and the Joule-Thomson coefficient are best described using the Peng-Robinson equation of state without a shift parameter, while the molecular dynamics simulations shows also good results at low temperatures.

Keywords: methane; equation of state; molecular dynamics; compressibility factor; heat capacity; Joule-Thomson coefficient.

DOI: 10.5510/OGP20180200348


P.A.Kulakov, A.A.Kutlubulatov, V.G.Afanasenko

Ufa State Petroleum Technological University, Ufa, Russia

Forecasting of the hydraulic fracturing efficiency as components of its design optimization

The task is predicting the outcome of the impact on productive oil-saturated layer through the technology of hydraulic fracturing. The efficiency of hydraulic fracturing depends on certain characteristics: the properties of the formation, the number and properties of the agents acting on the formation. In the work, 9 such features are identified, and the production is estimated using three indicators-the flow rate after hydraulic fracturing, the multiplicity of the flow rate increase and the Boolean parameter indicating the efficiency. The authors built a mathematical model, calculated diagnostic coefficients and information of the feature. The result is presented in three intervals: the forecast is negative, the forecast is uncertain and the forecast is positive. According to the actual data of hydraulic fracturing operations on these wells, its efficiency on others was determined. The article presents the feasibility of the proposed approach for solving this class of problems.

Keywords: hydraulic fracturing; optimization of hydraulic fracturing; hydraulic fracturing parameters; forecasting of the efficiency; measure Kullback.

DOI: 10.5510/OGP20180200349


T.R.Zagidulin1, R.V.Zagidulin1, V.R.Mardamshin2, T.A.Bakiyev2,3

1LLC «STC Spektr», Ufa, Russia; 2LLC «Gazprom Transgaz Ufa», Ufa, Russia; 3Ufa State Petroleum Technological University, Ufa, Russia

Magnetic control of tension at the difficult resistance of metal and decrease in size of residual mechanical tension of drill pipes

Results of tension researches of the field residual metal magnetization from the mechanical tension arising at simultaneous action in the cross section of metal of the bending and twisting moments, characteristic of the operated steel drill pipe and also other elements of metalwork are given at the difficult resistance of metal. It is shown that the tension size of the residual magnetization field of metal measured over a surface of a steel, pipe depends on the size of the normal and tangent mechanical tension arising at the difficult resistance of metal. The received formulas have generalizing character. It is shown that estimates of stress of metal it is possible to enter the threshold value of tension size of the residual magnetization field connected with the size of the allowed mechanical tension of metal. Results of magnetic control of tension of drill pipes are given by the indicator of mechanical tension of IN02 metal of the scanning type that areas with stress of metal are located mainly about the threaded connections made by means of welding. It is shown that results of magnetic control allow not only to reject drill pipes with dangerous stress of metal, but also to use them for a possibility of further maintenance free restoration of a resource due to decrease in residual mechanical tension in local areas of metal. Results of decrease in residual mechanical tension are given in areas with stress of metal of drill pipes the device of electromagnetic metal working.

Keywords: stress state; drill pipe; effective stress; residual stresses; combined strength; mechanical stress indicator.

DOI: 10.5510/OGP20180200350


A.S.Valeev1, Yu.A.Kotenev2, A.P.Shevelyov3, I.O.Dmitriev3, Sh.Kh.Sultanov2, M.A.Tokarev2

1PPP "Povkhneftegaz" OOO "LUKOIL-Western Siberia", Kogalym, Russia; 2Ufa State Petroleum Technological University, Ufa, Russia; 3Tyumen State University, Tyumen, Russia

Evaluation of water-gas impact efficiency at the use of various composition gas

The article discusses the application of one of the technologies for increasing oil recovery, implying water and gas impact and is of interest for use in depleted deposits of lowand medium-viscosity oils. The possibility of using this method depends mainly on the availability of non-commercial volumes of associated gas. The estimation of the gas volumes required by the technology requires hydrodynamic simulation in conditions as close as possible to the real ones. The task is to determine the ratio of injected gas and water, at which the maximum efficiency of oil production is achieved. The problem is considered in the example of the Vyintoig field, hydrodynamic modeling is used to solve the problems. As a result, the proportions of the injection volumes were obtained and compared, and recommendations were given for planning the application of the water-gas impact on one of the reservoirs of this field.

Keywords: water and gas impact; Vyintoigskoye field; hydrodynamic modeling; gravitational segregation; minimization of phase mobility; three-phase filtration.

DOI: 10.5510/OGP20180200351


P.A.Revel-Muroz, R.N.Bakhtizin, R.M.Karimov, B.N.Mastobaev

Ufa State Petroleum Technological University, Ufa, Russia

Joint transportation of heavy and wax oil blended

The paper discusses in detail the experience of joint transportation of high pour point wax and viscous heavy oil exhibiting anomalous non-Newtonian properties, the separate pumping of which is associated with high costs of maintaining high temperatures and pressures to overcome the forces of hydraulic resistance of pipelines and the exclusion of "freezing" areas while planned and emergency pumping stops. Represented methods for estimating the efficiency of blending the varios kind oils and calculation tools based on an analysis of the physico-chemical and rheological properties of oil blends.

Keywords: oil blend; rheology; effective viscosity; joint transportation; asphaltene sediments; pour point.

DOI: 10.5510/OGP20180200352


S.G.Zubairov, A.F.Ahmetov, A.S.Bairamgulov, O.E.Zubkova, D.I.Chistov

Ufa State Petroleum Technological University, Ufa, Russia

Evaluation of strain-stress states of initial and improved designs of the modules for oil sludge pyrolysis

Following equipment was developed and patented for implementation of the more effective methods from environmental and technical aspects for the low temperature sludge incineration. This article describes deformation stresses in constructions of burning chamber for the unit which is of box type shell with saddle shaped bottom. Possibility of coke scale formation on the internal surfaces and the bottom of the burning chamber was practically eliminated due to motion of reverse rotors and preliminary heating of additive material. This method increases efficiency of incinerating equipment, simultaneously
permits to reduce temperature for the operation and as a result decreases level of the deformation stresses in burning chamber unit. The initial and upgraded versions of the equipment were described in this document for the situation of abnormal mode on having started technological process and under exposure to excessive pressure in the burning chambers. Analyses of the arising stress conditions in the whole incinerator units and separately for the bottoms of the models are submitted for consideration.

Keywords: oil sludge; additive material; low temperature burning; installation; shell; burning chamber; saddle shaped bottom; deformation stress conditionons.

DOI: 10.5510/OGP20180200353


G.M.Zinnatullina1, O.A.Baulin1, A.Yu.Spashenko2, D.E.Alipov1, R.T.Shaikhutdinova1

1Ufa State Petroleum Technological University, Ufa, Russia; 2LLC «RTC Salavatnefteorgsintez», Salavat, Russia

Improvement of diesel fuel low-temperature properties

The pour-point depressant has been developed based on by products of JSC «Gazprom neftekhim Salavat». The given additive enables to significantly improve low temperature properties of diesel fuel. Adding of 0.2 % wt. developed additive to JSC «TANECO» diesel fuel do not change its quality scores in the range of required values by GOST 32511-2013 standard. Unique advantage of developed additive is an efficient use of by-products and solving major environmental problem simultaneously. Another advantage is an import substitution of additives.

Keywords: diesel fuel, cold flow improvers, cold filtering plugging point.

DOI: 10.5510/OGP20180200354


G.G.Yagafarova, J.A.Sukhareva, S.V.Leonteva, N.I.Fatikhova, D.I.Yagafarova, J.A.Fedorova

Ufa State Petroleum Technological University, Ufa, Russia

Purification of small rivers, polluted by petrochemical companies

A method of purification of small rivers from organic ecotoxicants using filtering constructions, based on a hydrobotanic method of purification with applying water grass of the genus Elodea - ecologically secure bioaccumulators, and gravel as a loading material, is proposed in work. The results of experiments, performed on a model installation using natural water resources of the Shugurovka river (Republic of Bashkortostan), proved the efficiency of the developed facilities.

Keywords: ecotoxicants; small rivers; oil pollution; water grass Elodea.

DOI: 10.5510/OGP20180200355