ISSN 0207-2351

Scientific-technical journal

OILFIELD ENGINEERING

                                                                                                    published since 1965

February 2021                       ¹ 2 (626)                      12 issues per year

 

CONTENÒS

 

DEVELOPMENT OF OIL AND GAS-OIL FIELDS

 

Posevich A.G. Use of Rzh = f(Qzh) modified displacement characteristics for estimating the efficiency of measures aimed at increasing oil reservoirs recovery rate (p. 5‑15)

 

Kordik K.E., Zabrodin O.Yu., Abdulin T.K., Ryasny A.G., Mavletdinov M.G., Sharin N.M., Kuznetsov S.L., Kryukov M.A., Zipir V.G. , Zipir M.G. An integrated model application when compiling a design document for the development of the Nakhodkinskoe gas field (p. 16‑21)

 

METHODS OF PRODUCING EFFECT ON A DEPOSIT AND RAISING OIL RECOVERY

 

Rakhmatullin A.A. Features of viscous oil recovery from carbonate reservoirs with increased reserves density (p. 22‑24)

 

RESEARCH OF FORMATIONS AND WELLS

 

Khanov A.V., Yakupova I.R., Tumanova E.S., Bunin D.Yu. The main results of researches on nonlinear filtration in low-permeable reservoirs (p. 25‑29)

 

Sedunov S.V., Filippov E.V., Mitroshin A.V. Analysis of the influence of oil-water emulsion viscosity on the degradation coefficient in well models using prosper software module (p. 30‑32)

 

Bisengaliev M.D., Bayamirova R.U., Zholbasarova A.T., Bisembaeva K.T. A study of structural-mechanical properties of oil-water emulsions of the Severnye Buzachi field (p. 33‑37)

 

TECHNIQUE AND TECHNOLOGY OF OIL PRODUCTION

 

Abdulin I.K., Abdullin A.F., Shlyapchinskiy A.V., Rozbaev D.A. Simultaneous separate (dual) production and injection. development prospects (p. 38‑42)

 

Goridko K.A., Bilalov R.R., Verbitsky V.S. Express evaluation of the efficiency of a tapered electric submersible pump use when pumping gas-liquid mixtures from a well. Part 1 (p. 43‑48)

 

Veliyev N.A., Zeinalov R.R. Intensification of oil recovery from depleted deposits with application of nanotechnologies (p. 49‑52)

 

Ishkov A.A., Anikin G.V. Mathematical modeling of the functioning of soil temperature stabilization systems with a horizontal evaporator (p. 53‑59)

 

 

Information on the articles

 

UDC 622.276          DOI: 10.33285/0207-2351-2021-2(626)-5-15

 

USE OF Rzh = f(Qzh) MODIFIED DISPLACEMENT CHARACTERISTICS FOR ESTIMATING
THE EFFICIENCY OF MEASURES AIMED AT INCREASING OIL
RESERVOIRS RECOVERY RATE (p. 5)

 

Anatoly Grigorievich Posevich, Cand. of tech. sci.

 

LLC "Gazprom VNIIGAZ"

15, bld. 1, Proektiruemy proezd P5537, 142717, Razvilka poselok, Leninsky district, Moscow region, Russian Federation,

e-mail: agp_oil@mail.ru

 

The article proposes a method for assessing the effectiveness of measures aimed at enhancing oil recovery (EOR). The method is based on a modified displacement characteristic (MDC), theoretically substantiated by the Buckley – Leverett model, linking the liquid-oil factor with the accumulated liquid production Rzh = a + bQzh. The notions of a "fixed" reservoir development system (FRDS) and temporarily "unbalanced" reservoir development system (TURDS) have been clarified. The transition from FRDS to TURDS is fixed by the bifurcation point, or "kink" of Rzh = f(Qzh) dependence, the slope of which determines the "new" mobile reserves that can be recovered from the reservoir with the full implementation of the introduced enhanced oil recovery method.

The feasibility of the proposed method application is proved by experimental and statistical data on the development of 12 oil production facilities (fields, separate layers, wells).

On the curves of the dependences Rzh = f(Qzh), built for these objects, the parameters of the "old" and "new" displacement characteristics (a, b and at, bt) as well as the point of the beginning of the process, bifurcation (or timely TURDS) and stabilization of the implemented EOR process are clearly identified. All possible options for the behavior of modified characteristic of oil replacement by water (MCR) Rzh = f(Qzh) are generalized by the ideal MCR Rzh(Qzh) corresponding to the equation Rzh = a + bQzh.

 

Keywords: modified characteristic of oil displacement by water developed by Sipachev – Posevich; "fixed" and temporarily "unbalanced" reservoir development systems; bifurcation point; evaluation of the effectiveness of measures to enhance oil recovery.

 

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UDC 622.279.23/.4          DOI: 10.33285/0207-2351-2021-2(626)-16-21

 

AN INTEGRATED MODEL APPLICATION WHEN COMPILING A DESIGN DOCUMENT
FOR THE DEVELOPMENT OF THE NAKHODKINSKOE GAS FIELD (p. 16)

 

Kirill Evgenievich Kordik, Cand. of tech. sci.,

Oleg Yurievich Zabrodin,

Timur Kamilevich Abdulin,

Alexander Gennadievich Ryasny,

Mikhail Grigorievich Mavletdinov,

Nikita Mikhailovich Sharin,

Sergey Leonidovich Kuznetsov

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

143a, Respublika str., Tyumen, 625026, Russian Federation,

e-mail: KordikKE@tmn.lukoil.com; ZabrodinOY@tmn.lukoil.com; AbdulinTK@tmn.lukoil.com; RyasnyiAG@tmn.lukoil.com; MavletdinovMG@tmn.lukoil.com; SharinNM@tmn.lukoil.com; Reception@tmn.lukoil.com

 

Mikhail Aleksandrovich Kryukov

 

LUKOIL–Engineering LLC

3à, Permskaya str., Perm, 614015, Russian Federation,

e-mail: Mikhail.Kryukov@pnn.lukoil.com

 

Vladislav Gennadievich Zipir,

Maxim Gennadievich Zipir

 

"Yamalneftegaz" Territorial Production Department (TPD) LLC "LUKOIL−Western Siberia"

24, Matrosov str., Salekhard, 629008, Yamalo-Nenets Autonomous district, Tyumen region, Russian Federation,

e-mail: Vladislav.Zipir@lukoil.com; Maksim.Zipir@lukoil.com

 

The paper presents the results of an integrated model application when developing a project document for the development of the Nakhodkinskoe gas field. Based on the results of the calculation made with the help of the integrated model, the gas production levels for the asset were predicted for a long-term period (with a planning horizon of 10 years), the recommended option for the development of the Nakhodkinskoye field was substantiated, which would ensure maximum gas recovery, taking into account the implemented design solutions and existing restrictions. Regarding the optimization of the well operation mode, a substantiation of the tubing diameters was carried out taking into account the predicted dynamics of reservoir pressure during a field development.

 

Keywords: integrated model; development of gas fields; calculation of technological indicators of a field development; medium and long term planning; tubing diameter; restrictions during a field operation.

 

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UDC 622.276.1/.4:552.54          DOI: 10.33285/0207-2351-2021-2(626)-22-24

 

FEATURES OF VISCOUS OIL RECOVERY FROM CARBONATE RESERVOIRS
WITH INCREASED RESERVES DENSITY (p. 22)

 

Ainur Akhatovich Rakhmatullin

 

LLC NPO "Neftegaztekhnologiya"

96/2, Revolutsionnaya str., Ufa, 450078, Republic of Bashkortostan, Russian Federation,

e-mail: npongt@gmail.com

 

The study of viscous oil recovery from a carbonate reservoir containing reserves of different densities proved the fact that for the full oil withdrawal and in order to reduce its viscosity by dissolving asphalt-resin-paraffin content, it is recommended to inject a water-gas mixture of "dry" and "fat" gases in the ratios obtained by technological parameters calculation in field conditions. So, for reserves with increased density, it is most effective to increase the introduction of "fat" gas by 6...8 %.

 

Keywords: carbonate reservoir; density of reserves; water-gas mixture; gas content.

 

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UDC 622.276.57          DOI: 10.33285/0207-2351-2021-2(626)-25-29

 

THE MAIN RESULTS OF RESEARCHES ON NONLINEAR FILTRATION
IN LOW-PERMEABLE RESERVOIRS (p. 25)

 

Alexander Viktorovich Khanov,

Inna Ramilevna Yakupova,

Ekaterina Sergeevna Tumanova,

Denis Yurievich Bunin

 

LUKOIL–Engineering Limited VolgogradNIPImorneft Branch Office in Volgograd

96, Lenin prosp., Volgograd, 400078, Russian Federation,

e-mail: Alexandr.Khanov@lukoil.com; Inna.Yakupova@lukoil.com; Ekaterina.Timokhina@lukoil.com; Denis.Bunin@lukoil.com

 

The article presents the results of laboratory studies of liquid filtration on the samples of low-permeable core selected from the AC3 reservoir of the Vinogradov field. The analysis and interpretation of the research results is carried out. The experimental dependence of the initial and limit pressure gradients on the absolute gas permeability is obtained. Based on the sector hydrodynamic model of the AC3 reservoir, calculations were made taking into account the parameters of nonlinear filtration, determined experimentally. The influence of nonlinear effects on technological indicators of development is analyzed as well.

 

Keywords: low-permeability reservoir; nonlinear liquid filtration; laboratory research; core; hydrodynamic modeling; oil production forecast.

 

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UDC 622.276.53          DOI: 10.33285/0207-2351-2021-2(626)-30-32

 

ANALYSIS OF THE INFLUENCE OF OIL-WATER EMULSION VISCOSITY ON THE DEGRADATION COEFFICIENT IN WELL MODELS USING PROSPER SOFTWARE MODULE (p. 30)

 

Sergey Vladimirovich Sedunov,

Alexander Valentinovich Mitroshin

 

LUKOIL–Engineering Limited PermNIPIneft Branch Office in Perm

3à, Permskaya str., Perm, 614015, Russian Federation,

e-mail: Sergey.Sedunov@pnn.lukoil.com; Aleksandr.Mitroshin@pnn.lukoil.com

 

Evgeny Vladimirovich Filippov

 

LUKOIL−PERM LLC

62, Lenin str., Perm, 614990, Russian Federation,

e-mail: Evgenij.Filippov@lp.lukoil.com

 

The article discusses the possibility of using the Petroleum Experts IPM Prosper software module (PVT INPUT DATA) in integrated modeling of oil wells. The module implements the functionality of accounting for the rheological properties of produced fluids and zones of their manifestation when performing calculations on an integrated model. On the example of two wells, the process of taking into account the influence of the dynamic viscosity of an oil-water emulsion on the operation of a submersible electric centrifugal pump is described. The process of obtaining the initial data, introducing them into the software module is described, and a methodology for assessing the accuracy of integrated models tuning is presented.

 

Keywords: oil-water emulsion; dynamic viscosity; integrated modeling; well model; Prosper; pump degradation factor.

 

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UDC 665.61.033-404.8          DOI: 10.33285/0207-2351-2021-2(626)-33-37

 

A STUDY OF STRUCTURAL-MECHANICAL PROPERTIES OF OIL-WATER EMULSIONS
OF THE SEVERNYE BUZACHI FIELD (p. 33)

 

Max Daulbaevich Bisengaliev, Cand. of tech. sci.,

Ryskol Umarovna Bayamirova, Cand. of tech. sci.,

Akshyryn Tangalievna Zholbasarova, Cand. of tech. sci.,

Karlygash Tanbaevna Bisembaeva, Cand. of tech. sci.

 

Atyrau University of Oil and Gas named after S. Utebaev

45à, Baimukhanov str., Atyrau, 060027, Republic of Kazakhstan,

e-mail: maks_bisengali@mail.ru

 

The structural-mechanical properties of oil-water emulsions in well 130 of the Severnye Buzachi field were experimentally studied. Based on the parameters measured in the laboratory, the values of shear stresses on the walls and shear rates were calculated, and then rheological flow curves were built for various temperatures and water-oil ratios. As a result of the studies, the regularities of changes in rheological properties depending on the water content and temperature were determined, and a formula was obtained that allows calculating the viscosity values of complex oil-water emulsions based on the oil properties of this field.

 

Keywords: oil-water emulsion; properties; rheology; crude oil; viscosity; water; temperature.

 

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UDC [622.276.5+628.112.2]"72"          DOI: 10.33285/0207-2351-2021-2(626)-38-42

 

SIMULTANEOUS SEPARATE (DUAL) PRODUCTION AND INJECTION.
DEVELOPMENT PROSPECTS (p. 38)

 

Ilnur Kamilevich Abdulin,

Artur Fuatovich Abdullin,

Dmitry Alimovich Rozbaev

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

143a, Respublika str., Tyumen, 625026, Russian Federation,

e-mail: AbdulinIK@tmn.lukoil.com; AbdullinAF@tmn.lukoil.com; RozbaevDA@tmn.lukoil.com

 

Alexander Vladimirovich Shlyapchinskiy

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

40, Shirokaya str., Kogalym, 628482, Tyumen region, Khanty-Mansi autonomous territory − Yugra, Russian Federation,

e-mail: ShlyapchinskiyAV @tmn.lukoil.com

 

The article discusses the relevance of the implementation of the simultaneous separate (dual) production and injection technology (SS(D)P and I) in the fields of the Western Siberia, identifies technological risks and criteria for selecting candidate wells. The main advantages of the technology implementation to improve the field development efficiency are given, the equipment used in the fields of the Russian Federation is overview and the economic feasibility of implementing the project for the implementation of (SS(D)P and I) is confirmed. The advantages of implementing the equipment layout developed by the authors of the paper are substantiated.

 

Keywords: simultaneous-separate (dual) production; simultaneous-separate (dual) injection; simultaneous-separate (dual) operation; packer; distribution unit.

 

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UDC 622.276.53.054.23:621.67-83          DOI: 10.33285/0207-2351-2021-2(626)-43-48

 

EXPRESS EVALUATION OF THE EFFICIENCY OF A TAPERED ELECTRIC SUBMERSIBLE
PUMP USE WHEN PUMPING GAS-LIQUID MIXTURES FROM A WELL. PART 1 (p. 43)

 

Kirill Aleksandrovich Goridko,

Radmir Ramisovich Bilalov,

Vladimir Sergeevich Verbitsky, Cand. of tech. sci.

 

National University of Oil and Gas "Gubkin University"

65, Leninsky prosp., Moscow, 119991, Russian Federation,

e-mail: goridkokirill@gmail.com; bilalovradmirr@gmail.com; vsverbitsky@gmail.com

 

Free gas presence in well products produced by the electric submersible pump (ESP) causes a negative impact on the discharge and energy characteristics of the pump. The pump may work in the non-optimal operation area due to the fact that free gas in the gas-liquid mixture (GLM) flow, increasing its volume, slips in the first ESP stages. Part of the energy, which is driven to the pump shaft, is irrationally consumed for compression and subsequent dissolution of gas bubbles in the fluid, resulting in a decreasing efficiency of the ESP.

Tapered ESP assembly is one of the methods that are applied to reduce harmful effect of free gas on pump performance. The first stages of higher flow rate are installed in the ESP housing as pre-installed modules for pumping out the GLM with a large volume flow rate of the mixture, its transformation into a depleted GLM with lower gas content and providing an optimal flow rate of GLM at the intake of classical stages of the pump unit section. Tapered ESPs are of interest because they require almost no additional costs. However, there is a difficulty in selection of tapered units for well conditions.

The results of bench tests of pumps ESP5-80, ESP5-125, ESP5-200 on the model gas-liquid mixture water–surfactant–air are summarized. Based on the obtained results, a method for calculating the deformation of ESP head has been developed and its error estimation has been made; recommendations on its application in the calculation of the tapered ESP have been formulated.

 

Keywords: electric submersible pump; gas-liquid mixture; tapered pump.

 

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UDC 622.276.6          DOI: 10.33285/0207-2351-2021-2(626)-49-52

 

INTENSIFICATION OF OIL RECOVERY FROM DEPLETED DEPOSITS
WITH APPLICATION OF NANOTECHNOLOGIES (p. 49)

 

Nazim Aslan ogly Veliev, Dr. of tech. sci., Professor,

 

State Oil Company of Azerbaijan Republic (SOCAR)

88a, G.B. Zardaby str., Baku, AZ1012, Azerbaijan Republic

e-mail: info@socar.com.ru

 

Rakhib Rashidovich Zeinalov, Dr. of tech. sci.

 

Innovation and Production Center

Baku, Azerbaijan Republic

e-mail: Rahib36@mail.ru

 

The article demonstrates the decisive role of studying the features of oil recovery intensification from depleted fields using nanotechnologies. The development of any oil field is carried out to the loss of profitability of further oil production. Methods of oil production intensification are aimed at reducing the time of a field development and, as a result, increasing its profitability.

The article discusses some methods of improving and simplifying oil production using nanotechnologies. The use of nanotechnology in order to increase the return on oil remains an urgent topic at the moment.

The main trends of this problem solution can be formulated as size effects in the properties of catalysts, size effects in catalytically active porous materials; nanotechnologies in separating mixtures; nanotechnological coatings; use of nano-materials as part of an intelligent system (various sensors, drives, control devices).

 

Keywords: nanotechnology; oil; oil production; intensification; depleted deposits.

 

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UDC 622.276:622.834.1          DOI: 10.33285/0207-2351-2021-2(626)-53-59

 

MATHEMATICAL MODELING OF THE FUNCTIONING OF SOIL TEMPERATURE STABILIZATION SYSTEMS WITH A HORIZONTAL EVAPORATOR (p. 53)

 

Alexey Andreevich Ishkov

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

143a, Gazoil-Plaza, Respublika str., Tyumen, 625026, Russian Federation,

e-mail: IshkovAA@tmn.lukoil.com

 

Gennadiy Vladimirovich Anikin, Cand. of phys.-math. sci.

 

Institute of the Earth’s cryosphere of Tyumen Scientific Center SB RAS

86, Malygin str., Tyumen, 625000, Russian Federation,

e-mail: Anikin@ikz.ru

 

The article presents a physical-mathematical model of the functioning of soil temperature stabilization systems with a horizontal evaporator. The relevance of the developed model is due to the need for a qualitative improvement in the methods of geocryological forecasting of the state of soils of the foundation of engineering structures with intense heat release during the development of oil and gas fields in the Northern and Arctic cold regions. On the basis of the solution obtained in the framework of the heat engineering forecast using the proposed model, it becomes possible to recommend the optimal configuration of the soil temperature stabilization system with a horizontal evaporator, the power of which will be sufficient to keep the soil frozen for a particular object.

 

Keywords: field development; frozen ground; temperature stabilization of soils; modeling; heat transfer; mass transfer.

 

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