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.

F.S.Ismayilov, F.M.Hajiyev (“OilGasScientficResearchProject” Institute)

Distribution of minor elements in mesozoic deposits of Caspian-Guba oil and gas field

The Caspian – Guba oil and gas field (OGF) is defined by presence of numerous oil and gas seeps from Mesozoic (Jurassic and Cretaceous), Paleocene and Miocene sediments. Industrial oil-and-gas accumulations, associated with sand and carbonate basin of these sediment complexes, detected within the limits of a tertiary monocline and on row pleat in southeast part field (fields Keshchay, Beyimdag-Tegchay, Shurabad and etc.) In order to determine the conditions of sedimentation and the petroleum potential of Mesozoic deposits, the distribution of Ni, Cu, Cr, V, Sr, Mn, Ti, Fe, Mg, Na over rock type was considered. As a result of this investigation it was established:

  • clastic limestone is defined by highest concentration of elements Ti, Fe, Sr, Mn, Na, Mg compared to organogenic limestone and accumulation of some elements associated with increase of clay fraction;
  • chemical limestone differs markedly from other types of limestone having elevated concentrations of Fe, Sr, Mn, Mg;
  • accumulation of Middle Jurassic sandy-clay sediments took place in reconstructive and neutral geochemical environments and the content of organic carbon exceeds 1%. This allows them to be considered as prospects for oil and gas field in Mesozoic system Caspian-Guba oil and gas field.

DOI: 10.5510/OGP20130300161


A.S.Hasanov (“OilGasScientficResearchProject” Institute)

Gravimetry enables precision in the study of mud volcanoes

The article notes that volcanic mud volcanic activity is characterized by a stable frequency. This is usually split into two time periods: the period of preparation and eruption. In most cases, the eruption from the crater of the volcano has ejected solid debris containing large amounts of oil, hydrogen sulfide and disseminated sulphides. The eruption of a mud volcano may last for several days and be accompanied by earthquakes. Sometimes, oil or gas may be continuously supplied to the surface. Next to each source, a volcanic mass becomes like a miniature volcano. Mud volcanoes form a ridge or different sized groups within a mud volcanic province, for example the Alat tectonic zone in Azerbaijan. Such zones are characterized by complex geological and tectonic structures that are challenging for study by geophysical methods. This article presents the results of high-precision gravity measurements in the study of complex geology built on the example of the Alat ridge.

DOI: 10.5510/OGP20130300162


K.M.Kerimov, V.G.Gadirov ("OilGasScientificResearchProject" Institute)

To possible oil and gas content of bowels along the tectonic zone «Gayidish» in Low-Kura depression

This article describes the presence of Padar-Kyzylagaj local gravitational maxima zone in Low-Kura depression along the right bank of the Kura river. The zone was further named «Gayidish» in honor of the founder of the modern Azerbaijan state, H.Aliyev. Attention is paid to the availability of various structures buried under this zone and to some survey results on seismic and gravity survey lines. Detailed study of the «Gayidish» zone by a complex of geophysical methods is required in order to define the possible oil and gas content of its depths.

DOI: 10.5510/OGP20130300163


Y.Chuanliang, D.Jingen, Y.Baohua, L.Jinxiang (China University of Petroleum, China National Offshore Oil Corporation)

Rock mechanical characteristic and wellbore stability in «Kingfisher» oilfield of Uganda

Shale in the "Kingfisher" оil field is easy to hydrate and often causes wellbore collapse during drilling, which can impact the efficiency of drilling. In order to solve the problem of shale collapse, the change of shale mechanical properties affected by drilling fluid are studied through experiments. The relationships between the shale mechanical parameters and the water content are established. Further, profiles of rock mechanical parameters in the "Kingfisher" оil field are also established based on the experiments. The results show that the formation in the "Kingfisher" оil field is soft and easily hydrated. Wellbore stability of the "Kingfisher" оil field is analyzed to establish the timedependent collapse pressure. The collapse pressure of shale increases sharply a short time after drilling and then slows down gradually. After 10 days the collapse pressure will no longer change. The study results will provide a basis of the drilling program in the "Kingfisher" оil field based upon the research of the shale hydration collapse period.

Keywords: "Kingfisher" оilfield, shale, hydration, wellbore stability, collapse pressure

DOI: 10.5510/OGP20130300164


J.Pei, Z.Yinghu, W.Zhenquan, S.Dongyu, (China University of Petroleum)

Numerical simulation of polycrystalline diamond compact bit rock-breaking process based on smooth partcle hydrodynamic-finite element coupling method

In order to study the dynamic response characteristic of the rock-breaking process by polycrystalline diamond compact (PDC) bit cutters, a three dimensional numerical model of rock-breaking is set up based on smooth particle hydrodynamic-finite element (SPH-FE) coupling method, and the influence factors are analyzed. Research shows:

  • the spread of stress wave in rock has obvious local effect and the rock-breaking process has "leap form" characteristic;
  • cutting force and axial force increase approximate linearly with the increasing of cutting depth;
  • the increase of cutting speed will accelerate the process of rock-breaking, but has little effect on the cutting force;
  • the cutting angle is closely related to rock-breaking efficiency, and the optimization of cutting angle depends upon lithology,
  • the optimum cutting angle of shale, sandstone and granite should be between 3°~7°~-4°~-1° and 1°~5° respectively.

Keywords: polycrystalline diamond compact drill bit (PDC drill bit), smoothed particle hydrodynamics-finite element coupling method (SPH-FE) method, crack propagation, rockbreaking efficiency.

DOI: 10.5510/OGP20130300165


M.I.Kurbanbayev, O.A.Dyshin, S.S.Keldibayeva, T.E.Mamedbeyli (JSC "KazNIPIMunayGas", "OilGasScientificResearchProject" Institute)

The analysis of a state development 13-th horizon, "Uzen" field, on the basis of statistical modelling of life cycle

The analysis of a state development of the 13-th horizon, "Uzen" field, on the basis of statistical modelling of life cycle is presented in the article. The developmental stages of the field and the duration of each is defined. Using a non-linear logistic model for the cumulative oil production has given estimates of the recoverable reserves. Based on the values of cumulative oil production in the final stage, oil production was predicted and the design parameters for the current development system were evaluated using an adaptive Kalman filter in discrete time.

DOI: 10.5510/OGP20130300166

E-mail: Кeldibaeva

C.Huanpeng, L.Gensheng, H.Zhongwei, T.Shouceng, S.Xianzhi, D.Fei (China University of Petroleum)

A new method of productivity prediction and analysis for micro radial horizontal drainholes driled by water jet

The micro radial horizontal drainholes drilled by high-pressure water jets are environmentally friendly and provide an effective way to develop oil and gas at low cost which can be applied in many countries. The method of drainhole parameter optimization to guide radial drilling operation has never been studied. Based on the principle of potential superposition, a new and simple semianalytical model considering the interference of different branches to predict productivity of the micro radial horizontal drainholes is established by coupling reservoir inflow with drainhole flow. The effects of drainhole parameters and configuration on the productivity, drainhole inflow profile and pressure distribution are investigated. The results indicate that the productivity is not sensitive to the drainhole diameter. The drainhole pressure drop is negligible with drainhole length less than 200 m, diameter larger than 30mm and roughness less than 3.5 mm, and the flow of micro radial horizontal drainhole can be assumed to be infinitely conductive. The larger the number of branches, the stronger interference they have on reservoir inflow and the smaller the inflow rate near the heel. The optimum number of branches within the same layer is two for a constant length of drainholes. The branches are recommended to be arranged evenly with the same angle between adjacent branches in the plane perpendicular to the vertical drainhole. This study can provide a method for the productivity prediction and guide for drilling design of the micro radial horizontal drainholes.

Keywords: micro radial horizontal drainhole, water jet, productivity prediction, branch configuration

DOI: 10.5510/OGP20130300167


E.M.Abbasov, H.T.Gahramanov, K.O.Rustamova ("OilGasScientificResearchProject" Institute)

Determination of the contact pressure between outside faces of the pressure ring and the gate

Based on theoretical investigations, the contact pressure between the surface of joint packing and the surface of the sealed part has been determined depending on its geometrical dimension and mechanical-and-physical properties. It is demonstrated that the contact pressure is linear up to a specified level of the attitude of internal and external radiuses of the packing and there after the growth rate increases. An analytical formula has been developed that allows the appraisal of the significance of the contact pressure depending on geometrical dimensions and mechanicaland-physical properties of packing element.

DOI: 10.5510/OGP20130300168


M.M.Gurbanov ("OilGasScientificResearchProject" Institute)

Chemical reagents employed for corrosion control during oil fields flooding

One of the main methods of enhancing oil production is water flooding of oil fields by means of water injection for maintenance of reservoir pressure. Most injected water requires chemical treatment to preserve well injectivityby providing water quality such that water will not bridge the pores. To prevent such complications, corrosion inhibitors, scaling, bactericide, deoxygenation for agents, SAA and polyelectrolytes may be employed.

DOI: 10.5510/OGP20130300169


M.R.Sisenbayeva (JSC "KazNIPIMunayGas")

Study of salt and paraffin inhibitors for "Uzen" field

The main factors which complicate and affect the production of producing wells are considered to be paraffin, deposits of inorganic salts and solids in the produced fluid. The article considers the results of laboratory studies of the most effective inhibitors against paraffin and scaling that were carried-out on the model of Uzen field reservoir water. Based on these test results the most effective inhibitors have been defined for the Uzen field. The inhibitor recommended for pilot testing was in the range of 75% – 90% effective at a inhibitor concentration of between 5 mg/l – 30 mg/l. The laboratory test results allow us to recommend the tested chemical reagents for pilot testing at the Uzen field.

DOI: 10.5510/OGP20130300170