ISSN 0207-2351

Scientific-technical journal

OILFIELD ENGINEERING

                                                                                                       published since 1965

August 2019                               ¹ 8 (608)                            12 issues per year

 

CONTENÒS

 

DEVELOPMENT OF OIL AND GAS-OIL FIELDS

 

Kandakova M.P., Vaseva Ya.V., Cherkasova I.Yu. Relaxation effects modeling on the example of the Amansky deposit of BV6 object of the Pokachevskoe field (p. 510)

 

METHODS OF PRODUCING EFFECT ON A DEPOSIT AND RAISING OIL RECOVERY

 

Volkov V.A., Falovskiy V.I., Prokhorov P.E., Turapin A.N. Geological accumulation of CO2 and its use in oil fields of the Samara region (p. 1118)

 

Patokina O.Yu., Hizhnyak G.P., Glushchenko V.N., Gladkih E.A. Dry acid compositions for oil-and-gas producing industry (p. 1924)

 

Yushkova O.A., Ivleva T.V. Some specific features of hydrodynamic modeling of a formation oil recovery enhancement methods in the "Tempest More" and "tNavigator" simulators. Selection of the optimal volume of polymeric solution injection on the example of AB12 object of the Kechimovsky field (p. 2529)

 

Mamalov E.N., Gorshkova E.V. Intensification of oil production in depleted oil fields (p. 3034)

 

Toropchin O.P., Tupitsin A.M., Kornev E.V., Safiullin I.R. About assessment of a hydraulic fracturing impact to the technological indicators of production wells (p. 3538)

 

RESEARCH OF FORMATIONS AND WELLS

 

Bakirov D.L., Babushkin E.V., Burdyga V.A., Fattakhov M.M., Shcherbakov A.V., Dobrochasov A.I. Optimization of technical-technological solutions for construction of complex-profile wells (p. 3944)

 

Kryganov P.V., Afanaskin I.V., Volpin S.G., Chen-len-son Yu.B. Well test without shutoff interpretation in the context of complex well and reservoir model (p. 4550)

 

Shumlyaeva V.V., Ikonnikova L.N. Analysis of the application of the methods for determining the mass fraction of paraffin according to GOST 11851-85 Oil. The method of paraffin determination (method A) by the technique of the paraffin mass share measurements in oil by the gravimetric method application (p. 5153)

 

Hadavimoghaddam F., Mishchenko I.T., Mostajeran G.M. A new approach of reservoir oil and gas properties estimation (p. 5458)

 

GATHERING, TRANSPORTATION AND PREPARATION OF OIL, GAS AND WATER

 

Yudakov V.A., Fan S.D., Fan I.A., Teregulov M.R., Bagdasarova Yu.A. Improvement of the operational reliability of the bottom of vertical steel tanks for oil and petroleum products (p. 5965)

 

PREVENTION OF PARAFFIN SEDIMENTATION, SALTS AND HIDRATES

 

Isaev A.A., Malykhin V.I., Sharifullin A.A. Development of a method of asphaltene-resin-paraffin depositions prevention in downhole equipment (p. 6672)

 

Nelyubov D.V., Vazhenin D.A., Semikhina L.P., Vodorezov D.V. The impact of phase transactions in waxy crude oils on the parameters of their recovery from the filled sand rocks (p. 7380)

 

 

Information on the articles

 

UDC 622.276.1/.4.001.57          DOI: 10.30713/0207-2351-2019-8(608)-5-10

 

RELAXATION EFFECTS MODELING ON THE EXAMPLE OF THE AMANSKY DEPOSIT
OF BV6 OBJECT OF THE POKACHEVSKOE FIELD (p. 5)

 

Mariya Pavlovna Kandakova,

Yana Vladimirovna Vaseva,

Irina Yurievna Cherkasova

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

143a, Respublika str., Tyumen, 625000, Tyumen region, Russian Federation,

e-mail: KandakovaMP@tmn.lukoil.com; VasevaYV@tmn.lukoil.com; CherkasovaIY@tmn.lukoil.com

 

The paper proposes an approach for predicting the period of a deposit "relaxation". The proxy model was used to consider the possibility of oil saturation rebuilding by means of capillary pressure curves, to implement the methods for reserves additional recovery using the method of the reverse cone and near-boundary injection. The approach applied on the proxy model is adapted to the existing model of the Pokachevskoe field of BV6 object.

 

Keywords: oil; reservoir relaxation; proxy model; reservoir conservation; critical water saturation; oil saturation modeling; coning; capillary modeling.

 

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UDC 622.276.6          DOI: 10.30713/0207-2351-2019-8(608)-11-18

 

GEOLOGICAL ACCUMULATION OF CO2 AND ITS USE IN OIL FIELDS OF THE SAMARA REGION

 

Vladimir Anatolievich Volkov, Cand. of tech. sci., Director,

Vyacheslav Ivanovich Falovskiy, Cand. of tech. sci.,

Petr Eduardovich Prokhorov, Head of the Department of Physical-Chemical Researches,

Alexey Nikolaevich Turapin, Director of the Department of Innovative Design

 

LLC "DELTA-prom"

2a, room 2, Demokraticheskaya str., Samara, 443031, Samara region, Russian Federation,

e-mail: sdelta63@yandex.ru

 

The problems of technogenic CO2 utilization, produced at chemical enterprises of Samara region as a by-product, are considered. The possibility of using CO2 in enhanced oil recovery methods, namely, the use of gas-cyclic CO2 injection (GCI- CO2) in the fields of Samara region, is discussed. Experimental studies of CO2 mixtures with oil from the Kozlovsky field in Samara region are described.

 

Keywords: oil production intensification; carbon dioxide; oil viscosity; gas cyclic injection.

 

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UDC 622.276.63          DOI: 10.30713/0207-2351-2019-8(608)-19-24

 

DRY ACID COMPOSITIONS FOR OIL-AND-GAS PRODUCING INDUSTRY (p. 19)

 

Olga Yurievna Patokina,

Viktor Nikolaevich Glushchenko, Cand. of tech. sci.,

 

LUKOIL−Engineering Limited PermNIPIneft Branch Office in Perm

29, Sovetskaya Armiya str., Perm, 614066, Russian Federation,

e-mail: Olga.Patokina@pnn.lukoil.com; vng.51@mail.ru

 

Grigoriy Petrovich Hyzhnyak, Dr. of tech. sci.,

Evgeniy Aleksandrovich Gladkih

 

Perm National Research Polytechnic University

29, Komsomolsky prosp., Perm, 614990, Russian Federation,

e-mail: xgp@mail.ru

 

Lately dry acid compositions have appeared in the oil-field chemistry market. They have some advantages in comparison with traditional water solutions of mineral and organic acids when used in remote oil and gas regions. The paper are critically examined industrial dry acid compositions, taking into consideration restrictions of their use in well acid treatment. The restrictions refer to the organic chlorine content, temperature conditions, sludging in reactions with carbonates and capacities of their dissolution. The conclusion is made on prospects of new dry acid compositions creation, based on hydrochloric acid complexes with amino derivatives: hydrazine, hydroxylamine and others.

 

Keywords: dry acid compositions; bottom hole formation zone acid treatment; acid complexing; acid reaction with rock.

 

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UDC 622.276.64          DOI: 10.30713/0207-2351-2019-8(608)-25-29

 

SOME SPECIFIC FEATURES OF HYDRODYNAMIC MODELING OF A FORMATION OIL RECOVERY ENHANCEMENT METHODS IN THE "TEMPEST MORE" AND "tNAVIGATOR" SIMULATORS.
SELECTION OF THE OPTIMAL VOLUME OF POLYMERIC SOLUTION INJECTION
ON THE EXAMPLE OF AB12 OBJECT OF THE KECHIMOVSKY FIELD

 

Olga Andreevna Yushkova,

Tatiana Viktorovna Ivleva

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

143a, Respublika str., Tyumen, 625000, Tyumen region, Russian Federation,

e-mail: YushkovaOA@tmn.lukoil.com; IvlevaTV@tmn.lukoil.com

 

The paper describes the technology of impact on a formation by flow-diverting technologies. Some specific features of hydrodynamic modeling of gel-forming compositions injection into a formation into the “Tempest More” and “tNavigator” simulators are considered. Calculations were carried out to determine the optimal injection volume of the polymer solution on the example of AB12 object of Kechimovskoye field. A local grinding of the wells was performed to determine the distance of the polymer’s moving into the reservoir.

 

Keywords: enhanced oil recovery methods; polymers; Tempest More; tNavigator; modeling; injection volumes.

 

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UDC 622.276.6          DOI: 10.30713/0207-2351-2019-8(608)-30-34

 

INTENSIFICATION OF OIL PRODUCTION IN DEPLETED OIL FIELDS (p. 30)

 

Evgeny Nikolaevich Mamalov,

Evgeniya Vyacheslavovna Gorshkova

 

Oil and Gaz Institute of Azerbaijan NAS

9, F. Amirov str., Baku, AZ1000, Republic of Azerbaijan,

e-mail: evgeniy_mamalov@rambler.ru

 

The number of the deposits in the late stage of development is growing in the world. Their development requires implementation of new technologies or improvement of old ones. The paper discusses the combination of two technologies that allow to intensify oil production from depleted reservoirs. The studies were carried out both in homogeneous porous media and in layered inhomogeneous media. The essence of the technology is as follows. First, displacement is carried out by injection of electrochemically modified water (catholyte). Then, the rim of the gas-liquid emulsion is injected with its subsequent pushing by water or catholyte. The gas-liquid emulsion was prepared by mixing air and catholyte under pressure. The use of the gas-liquid emulsion rim contributes to the additional extraction of oil from the reservoir. The pressure drop increase in the highly permeable layer and, accordingly, the redistribution of the injected fluid in the layers of different permeability, respectively, helps to level the differences in the layers’ permeability. This contributes to the growth of oil production from the low-permeable layer. As a result, additional oil production amounted to 4,5…13,6 %.

 

Keywords: layered heterogeneous formation; electrochemically modified water; catholyte; emulsion; oil recovery; residual resistance factor; differential; pressure; flow rate.

 

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UDC 622.276.66          DOI: 10.30713/0207-2351-2019-8(608)-35-38

 

ABOUT ASSESSMENT OF A HYDRAULIC FRACTURING IMPACT TO THE TECHNOLOGICAL INDICATORS OF PRODUCTION WELLS (p. 35)

 

Oleg Petrovich Toropchin,

Andrey Mikhailovich Tupitsin, Cand. of tech. sci.,

Evgeny Vladimirovich Kornev

 

LLC "BayTex"

51, Leningradskaya str., Buguruslan, 461630, Orenburg region, Russian Federation

 

Ilnur Ramilevich Safiullin

 

LLC NPO "Neftegaztekhnologiya"

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

e-mail: npongt@gmail.com

 

The paper discusses the problem and the assessment of a hydraulic fracturing impact on the surrounding production wells. One of the most important factors of the impact, namely, the distance between wells is considered. According to the results of the analysis of the hydraulic fracturing effect, the risk of an oil production decrease in the wells by the well subjected to a hydraulic fracturing and being one of the surrounding wells was assessed.

 

Keywords: hydraulic fracturing of a formation; displacement characteristic; hydrodynamic model; filtration field.

 

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UDC 622.243.27          DOI: 10.30713/0207-2351-2019-8(608)-39-44

 

OPTIMIZATION OF TECHNICAL-TECHNOLOGICAL SOLUTIONS FOR CONSTRUCTION
OF COMPLEX-PROFILE WELLS
(p. 39)

 

Daniyar Lyabipovich Bakirov, Cand. of tech. sci.,

Eduard Valerievich Babushkin, Cand. of tech. sci.,

Vitaliy Aleksandrovich Burdyga, Cand. of tech. sci.,

Marsel Masalimovich Fattakhov,

Andrey Valerievich Shcherbakov,

Alexander Igorevich Dobrochasov

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

41, Respublika str., Tyumen, 625000, Russian Federation,

e-mail: BakirovDL@tmn.lukoil.com, BurdygaVA@tmn.lukoil.com, BabushkinEV@tmn.lukoil.com

 

The structure of hydrocarbon reserves, becoming more complicated, the drilling of shallow reservoirs and offshore areas cause an increase in the volume of drilling wells with a complex profile. The paper presents the directions for the selection of energy-efficient profiles for wells with a big kick-off point.

 

Keywords: complex profile well; inclined-straight sections; kick-off point; wellbore deviation.

 

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UDC 622.276.5.001.5          DOI: 10.30713/0207-2351-2019-8(608)-45-50

 

WELL TEST WITHOUT SHUTOFF INTERPRETATION IN THE CONTEXT OF COMPLEX WELL
AND RESERVOIR MODEL
(p. 45)

 

Pavel Viktorovich Kryganov, Cand. of tech. sci.,

Ivan Vladimirovich Afanaskin, Cand. of tech. sci.,

Sergey Grigorievich Volpin, Cand. of tech. sci.,

Yury Borisovich Chen-len-son

 

Scientific Research Institute of System Development of the Russian Academy of Sciences

36, bld. 1, Nakhimovsky prosp., Moscow, 117218, Russian Federation,

e-mail: Kryganov@mail.ru; ivan@afanaskin.ru

 

New well test data interpretation approach without shutoff proposed for wells operating at alternating rate. New approach tested by numerical simulation in the context of complex well and reservoir model. Simulation results indicated good match of initial and calculated data, that confirms viability of described approach.

 

Keywords: well test; complex well and reservoir model.

 

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UDC 665.61.033.225+542.8          DOI: 10.30713/0207-2351-2019-8(608)-51-53

 

ANALYSIS OF THE APPLICATION OF THE METHODS FOR DETERMINING THE MASS FRACTION
OF PARAFFIN ACCORDING TO GOST 11851-85 OIL. THE METHOD OF PARAFFIN
DETERMINATION (METHOD A) BY THE TECHNIQUE OF THE PARAFFIN MASS SHARE MEASUREMENTS IN OIL BY THE GRAVIMETRIC METHOD APPLICATION
(p. 51)

 

Viktoriya Vladimirovna Shumlyaeva,

Lyudmila Nikovna Ikonnikova, Cand. of tech. sci.

 

Northern (Arctic) Federal University named after M.V. Lomonosov, Higher School of Energy, Oil and Gas Engineering

17, bld. 1, Severnaya Dvina Naberezhnaya, Arkhangelsk, 163002, Russian Federation,

e-mail: shumlyaeva.v@gmail.com, l.ikonnikova@narfu.ru

 

The article presents the results of determining the mass fraction of paraffin in various samples of oil and in a standard sample according to GOST 11851-85 (Method A) Oil. The method for determining the paraffin and the Methodology for measuring the mass fraction of paraffin in oil by the gravimetric method, as well as the criteria for the accuracy characteristics according to these methods. Based on the experiment conducted, it was concluded what method is more promising for obtaining qualitative information on the paraffin content in oil.

 

Keywords: paraffin mass fraction; oil components; physical-chemical methods for the study of oil.

 

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UDC 552.578          DOI: 10.30713/0207-2351-2019-8(608)-54-58

 

A NEW APPROACH OF RESERVOIR OIL AND GAS PROPERTIES ESTIMATION (ñ. 54)

 

Fahime Hadavimoghaddam,

Igor Tikhonovich Mishchenko, Dr. of tech. sci., Profesor,

Gortani Masoud Mostajeran

 

National University of Oil and Gas "Gubkin university"

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

e-mail: Hadavimoghaddam.f@gubkin.ru; Mishchenko.i@gubkin.ru; Mostajerang.m@gubkin.ru

 

This study presents a novel model of correlation for the prediction of the pressure, volume, and temperature (PVT) properties of crude oil samples. It illustrates a methodology with which to obtain higher prediction precision of parameters by applying this newly developed model of correlation to a set of crude oil samples from different wells of oil reservoirs. The PVT data set presented in this study consists of crude oil samples from different geographical locations in Iran. By means of extensive research and comparison, the strength of this new model of correlation is tested against traditional methods of predicting PVT properties, such as Al-Marhoun and Standing. In addition, in contrast to most existing correlations which have several parameters in mathematical equations, the new model developed in this paper has only one parameter which can easily be applied to any oil sample. The correlation coefficients of the correlations of this study that were based on the oil samples are closer to 1 than those of existing correlations. The new model developed in this paper would suit a large number of reservoirs from different geographical location in Iran with different properties.

 

Keywords: oil density; saturation pressure; Iranian oil field; correlation method; formation volume factor.

 

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UDC 622.692.23-034          DOI: 10.30713/0207-2351-2019-8(608)-59-65

 

IMPROVEMENT OF THE OPERATIONAL RELIABILITY OF THE BOTTOM
F VERTICAL STEEL TANKS FOR OIL AND PETROLEUM PRODUCTS
(p. 59)

 

Vitaly Aleksandrovich Yudakov,

Sergey Dmitrievich Fan

 

LLC "SamaraNIPIneft"

18, Vilonovskaya str., Samara, 443010, Russian Federation,

e-mail: FanSD@samnipi.rosneft.ru

 

Irina Aleksandrovna Fan,

Marat Rustamovich Teregulov,

Yuliya Aleksandrovna Bagdasarova, Cand. of pedag. Sci.

 

Samara State Technical University

244, Molodogvardeyskaya str., Samara, 443100, Russian Federation.

 

The paper presents a tank bottom structure, being the tank element and able to take a part of loads on the foundation. The foreign experience of similar tank bottoms structures is discussed as well. The analytical method and the finite element method were applied for comparative calculations of the deviation of the multi-layered and standard bottoms. According to the results obtained, the tank bottom in the form of multi-layered sandwich structure permits improving its operational characteristics, reliability and environmental safety of tanks structures.

 

Keywords: vertical steel tank; double bottom; multilayered design of the bottom with the intermediate base layer of foamed glass; stress-strain state; leaks detection system.

 

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UDC 622.276.72          DOI: 10.30713/0207-2351-2019-8(608)-66-72

 

DEVELOPMENT OF A METHOD OF ASPHALTENE-RESIN-PARAFFIN DEPOSITIONS PREVENTION
IN DOWNHOLE EQUIPMENT
(p. 66)

 

Anatoliy Andreevich Isaev, Cand. of tech. sci.,

Vladimir Ivanovich Malykhin,

Almaz Amirzyanovich Sharifullin, Cand. of tech. sci.

 

LLC "Sheshmaoil Management Company"

POB 192, P.O. No. 8, Almetyevsk, 423458, Republic of Tatarstan, Russian Federation,

e-mail: isaeff-oil@yandex.ru

 

The paper presents information on the methods applied to prevent asphaltene-resin-paraffin depositions (ARPD) in the wells of LLC "Sheshmaoil Management Company". The drawbacks of the existing methods of ARPD prevention are shown. It has been revealed that asphaltenes, resins and paraffins are formed at the peak points of the critical values of the magnetic-field strength. The results of the ARPD prevention devices use are shown. These devices are made of diamagnetic material (DMM) like tubing couplings, thus increasing wells overhaul period of time, reducing the load on the pumpjack´s horsehead and operational expenses.

 

Keywords: asphaltene-resin-paraffin deposits; tubing couplings; diamagnetic material; magnetic field; time between overhauls.

 

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UDC 665.7.033.28          DOI: 10.30713/0207-2351-2019-8(608)-73-80

 

THE IMPACT OF PHASE TRANSACTIONS IN WAXY CRUDE OILS ON THE PARAMETERS
OF THEIR RECOVERY FROM THE FILLED SAND ROCKS
(p. 73)

 

D.V. Nelyubov

 

PAU "25 State Research Institute of Chemmotology of the RF Ministry of Defense"

10, Molodogvardeyskaya str., 121467, Moscow, Russian Federation,

e-mail: nelyubov_dv@mail.ru

 

D.A. Vazhenin, L.P. Semikhina

 

Tyumen State University

15a, Perekopskaya str., 625003, Tyumen, Russian Federation

 

D.V. Vodorezov

 

Tyumen Industrial University

38, Volodarsky str., Tyumen, 625000, Russian Federation

 

Paper describes the results of investigation the parameters of paraffins and asphaltenes formation of waxy crude oils of Piakiahinskogoe oilfield and two lab-made models. It based on their viscosity-temperature curves and Fourier-transform laser diffractomery (FTLD) researches. It was found that association of paraffins and asphaltenes is followed by abrupt changes of "activation energy" for viscous flow (Eµ). These Eµ changes are evidenced of micro-structurizations in crude oil and typified their intensity. It was established that the nature of the viscous-temperature dependence of this phase transition, the kinetics of association and dissociation of the formed structures with the size of 1,1...2,1 μm and the energy of their structure formation ∆Eµ are determined by the nature of asphaltenes. The structural features of paraffins determine the temperature ranges of a given phase transition, the size and the number of paraffin-asphaltene associates formed. Filtration studies of these oil samples showed that the structure formation of asphaltenes in them impairs the filtration characteristics of medium-permeable rocks, which results in a decrease in oil recovery by 15...50 % and an increase in discharge pressure by 30...80 %.

 

Keywords: paraffinic oil; asphaltenes; paraffin-asphaltene associates; filtration characteristics.

 

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