ISSN 0207-2351

Scientific-technical journal

OILFIELD ENGINEERING

                                                                                                    published since 1965

February 2020                           ¹ 2 (614)                      12 issues per year

 

CONTENÒS

 

DEVELOPMENT OF OIL AND GAS-OIL FIELDS

 

Polyakova N.S., Sentsov A.Yu., Ryabov I.V. Formation of an optimal development option in conditions of geological uncertainty of the object with application of a probabilistic approach on the example of BV7 formation of South-Vyintoisky deposit (p. 5‑12)

 

Gilmanova N.V., Taracheva E.S., Sivkova A.V. Forecast of area of capillary-pressurized oil for low-permeable collectors when justification of residual oil saturation by various ways (p. 12‑12)

 

Mambetov S.F., Khytin N.A., Ishkov A.A. Application of hydrodynamic simulation to estimate the efficiency of polymeric compositions use in the technologies of the injectivity profile conformance (p. 19‑12)

 

Stepanov A.V., Pospelova T.A., Zimin P.V. Development of analytical algorithms for evaluating indicators of development and optimization of a drilling program taking into account target levels of production and geological technical measures (p. 25‑12)

 

METHODS OF PRODUCING EFFECT ON A DEPOSIT AND RAISING OIL RECOVERY

 

Kaushanskiy D.A., Demyanovsky V.B., Bakirov N.R., Eremenko V.B. Testing of polymer-gel systems "Temposkrin-Plus Vpp" and "Temposkrin-Lux" under conditions of use of high-mineralized injection agents at high reservoir temperatures (p. 32‑12)

 

Insafov R.M., Egorov A.F., Minnullin A.G., Rakhmatullin A.A. Increase of the efficiency of oil displacement by water-gas technologies application, changing the composition and volume of gas in rims (p. 38‑12)

 

Mazaev V.V., Tomchuk N.N., Shabalovskaya E.A., Shakhmatov I.S. Laboratory studies of acid impact efficiency on rocks of low-permeable terrigenous collectors (p. 41‑12)

 

Insafov R.M. Reduction of energy consumption when producing, collecting and transporting products from peripheral deposits (p. 48‑12)

 

RESEARCH OF FORMATIONS AND WELLS

 

Afanaskin I.V., Volpin S.G., Kryganov P.V. Deconvolution as well test interpretation tool (p. 50‑56)

 

TECHNIQUE AND TECHNOLOGY OF OIL PRODUCTION

 

Mehdiyev K.K. Cementing of a near-well bottom zone in an aggressive environment (p. 57‑60)

 

Isaev A.A., Aliev M.M., Sharifullin A.A. Calculation of loads on a rotating rod string in deviated oil wells (p. 61‑65)

 

Griguletskiy V.G., Fursov A.Yu. Stability of support stands of blocks of offshore deep-water stationary steel platforms when developing oil and gas deposits on the shelf (p. 66‑75)

 

ANNIVERSARY DATE

 

Congratulations on the anniversary of N.I.Khisamutdinov (p. 76‑77)

 

 

Information on the articles

 

UDC 622.276.1/.4          DOI: 10.30713/0207-2351-2020-2(614)-5-11

 

FORMATION OF AN OPTIMAL DEVELOPMENT OPTION IN CONDITIONS OF GEOLOGICAL UNCERTAINTY OF THE OBJECT WITH APPLICATION OF A PROBABILISTIC APPROACH
ON THE EXAMPLE OF BV7 FORMATION OF SOUTH-VYINTOISKY DEPOSIT (p. 5)

 

Nataliya Sergeevna Polyakova,

Alexey Yurievich Sentsov,

Igor Vyacheslavovich Ryabov

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

143à, Respublika str., Tyumen, 625026, Tyumen region, Russian Federation,

e-mail: PolyakovaNS@tmn.lukoil.com; SentcovAY@tmn.lukoil.com; RyabovIV@tmn.lukoil.com

 

The paper considers the approach to putting into development of marginal zones of partially drilled oil deposits, which includes the creation of probabilistic geological-hydrodynamic models of the selected sites, the formation of scenarios for the sites to be put into development and the selection of the optimal development option based on the results of a feasibility study.

 

Keywords: probabilistic model; geological model; uncertainty; development scenarios; optimal development option.

 

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UDC 550.832+550.8.072          DOI: 10.30713/0207-2351-2020-2(614)-12-18

 

FORECAST OF AREA OF CAPILLARY-PRESSURIZED OIL FOR LOW-PERMEABLE COLLECTORS
WHEN JUSTIFICATION OF RESIDUAL OIL SATURATION BY VARIOUS WAYS (p. 12)

 

Nataliya Vyacheslavovna Gilmanova, Cand. of geol.-mineral. sci.,

Elizaveta Sergeevna Taracheva,

Anastasiya Vladimirovna Sivkova

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

143à, Respublika str., Tyumen, 625026, Tyumen region, Russian Federation,

e-mail: GilmanovaNV@tmn.lukoil.com; TarachevaES@tmn.lukoil.com; SivkovaAV@tmn.lukoil.com

 

The paper discusses various ways of substantiating the coefficient of residual oil saturation. It has been established that the use of multiscale research methods makes it possible to substantiate the values of residual oil saturation for low-permeability reservoirs that are significantly higher than those obtained in experiments on the displacement of standard-sized cylinders. Residual oil saturation maps were constructed in tightly bound and capillary-pinched form, which allow you to visually display areas with unrecoverable reserves and highlight priority areas for drilling.

 

Keywords: residual oil saturation; scale effects; oil displacement by water; full-size core; microprobe; Surguchev´s method; hydrodynamic modeling.

 

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UDC 622.276.1/.4+622.276.432          DOI: 10.30713/0207-2351-2020-2(614)-19-24

 

APPLICATION OF HYDRODYNAMIC SIMULATION TO ESTIMATE THE EFFICIENCY OF POLYMERIC COMPOSITIONS USE IN THE TECHNOLOGIES OF THE INJECTIVITY PROFILE CONFORMANCE (p. 19)

 

Sergey Fanilovich Mambetov,

Nikolay Anatolievich Khytin

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

19, Tsentralnaya str., Kogalym, 628483, Khanty-Mansi autonomous territory − Yugra, Tyumen region, Russian Federation,

e-mail: MambetovSF@tmn.lukoil.com; HytinNA@tmn.lukoil.com

 

Alexey Andreevich Ishkov

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

2143à, Gazoil-Plaza, Respublika str., Tyumen, 625026, Russian Federation,

e-mail: IshkovAA@tmn.lukoil.com

 

The paper presents the results of a comparative analysis of the application efficiency and possible scenarios of a reservoir section further development after injection wells treatment by the PetroPAM P-104T polymer composition (conformance of the injectivity profile (CIP) as well as redistribution of filtration flows) applying hydrodynamic modeling. An attempt to simulate CIP technology was implemented using the Tempest MORE simulator. The predictive options for determining the optimal injection volumes and concentrations of the working agent are calculated on the example of a section of the BS102-3 formation of the Tevlinsko-Russkinskoye field. The technological and economic efficiency of the proposed well treatment options has been evaluated.

 

Keywords: conformance of the injectivity profile; Tempest MORE; hydrodynamic modeling; concentration; injection volume; additional oil displacement; filtration; additional oil production; permeability heterogeneity.

 

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UDC 622.276.5:658.018.2          DOI: 10.30713/0207-2351-2020-2(614)-25-31

 

DEVELOPMENT OF ANALYTICAL ALGORITHMS FOR EVALUATING INDICATORS OF DEVELOPMENT AND OPTIMIZATION OF A DRILLING PROGRAM TAKING INTO ACCOUNT TARGET LEVELS
OF PRODUCTION AND GEOLOGICAL TECHNICAL MEASURES (p. 25)

 

Anatoliy Viktorovich Stepanov, Cand. of phyz.-math. sci.,

Tatiyana Anatolievna Pospelova, Cand. of tech. sci.,

Petr Valerievich Zimin, Cand. of tech. sci.

 

LLC "Tyumen Petroleum Research Center"

42, Maxim Gorky str., Tyumen, 625048, Tyumen region, Russian Federation,

e-mail: avstepanov5@tnnc.rosneft.ru; tapospelova@tnnc.rosneft.ru; PVZimin@tnnc.rosneft.ru

 

The creation of effective tools to be used for analysis of oil and gas fields development is dictated by the necessity of analyzing the development of facilities that are at different stages of development, including the task of predicting the potential of new facilities. The considered approach, based on analytical methods, makes it possible to create a unified and relatively simple mathematical model of a field that is suitable for most objects and is organically implemented in the concept of, since it provides high computational speed and allows effective solution of inverse optimization problems.

 

Keywords: oil and gas fields; mathematical model; digitalization of development process.

 

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UDC 622.276.43:678          DOI: 10.30713/0207-2351-2020-2(614)-32-37

 

TESTING OF POLYMER-GEL SYSTEMS "TEMPOSKRIN-PLUS VPP" AND "TEMPOSKRIN-LUX"
UNDER CONDITIONS OF USE OF HIGH-MINERALIZED INJECTION AGENTS
AT HIGH RESERVOIR TEMPERATURES (p. 32)

 

David Aronovich Kaushanskiy1,2, Cand. of tech. sci.,

Vladimir Borisovich Demyanovsky1,2, Cand. of chem. sci.,

Niyaz Radilovich Bakirov1,2,

V.B. Eremenko2

 

1Research and Technology Company Atombiotech

3, Office 513, Gubkin str., Moscow, 119333, Russian Federation,

e-mail: dak@ipng.ru; demian20@yandex.ru; niyazzayin1994@gmail.com

 

2Oil and Gas Research Institute Russian Academy of Sciences (OGRI RAS)

3, Gubkin str., Moscow, 119333, Russian Federation.

 

Most of the world's oil fields, including Russia, the Republic of Kazakhstan, the Persian Gulf countries, the USA, are developed by reservoir pressure maintenance using an injection agent – water with various degrees of mineralization (from fresh to highly mineralized (300 g/l)). Based on this fact, it is of interest to study the possibility of using the "Temposkrin-Lux" and "Temposkrin-Plus VPP" reagents. The paper is devoted to the problems of the above-said reagents adaptation to injection agents used in Kuwait fields. The following agents were used as injection agents: sea water – mineralization of 30...50 g/l; Wara water – mineralization of 183 g/l; Burgan water – mineralization of 194 g/l. The data on the basic physical-chemical and rheological properties of the obtained polymer-gel systems "Temposkrin-Plus VPP" and "Temposkrin-Lux", including the kinetics of swelling, are presented. The simultaneous effect of the degree of the injection agent mineralization and high temperature was investigated, and the possibility of using reagents to enhance oil recovery under the indicated conditions was evaluated.

 

Keywords: polymer-gel system; "Temposkrin-Plus"; "Temposkrin-Lux"; high mineralization; high reservoir temperature; water swelling system; thermal stability; salt tolerance.

 

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UDC 622.276.42/.43          DOI: 10.30713/0207-2351-2020-2(614)-38-40

 

INCREASE OF THE EFFICIENCY OF OIL DISPLACEMENT BY WATER-GAS TECHNOLOGIES APPLICATION, CHANGING THE COMPOSITION AND VOLUME OF GAS IN RIMS (ñ. 38)

 

Rishat Minshagitovich Insafov,

Andrey Fedorovich Egorov, Cand. of tech. sci.,

Andrey Gennadievich Minnullin

 

CJSC "Aloil"

63, Engels str., Bavly-city, 423930, Republic of Tatarstan, Russian Federation,

e-mail: aloil116@mail.ru

 

Ainur Akhatovich Rakhmatullin

 

LLC NPO "Neftegaztekhnologiya"

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

e-mail: npongt@gmail.com

 

The paper presents the results of a numerical calculation of oil displacement efficiency by changing the composition of the gas for a water-gas mixture preparation by introducing conditionally dry and fatty gases into the mixing unit with water. The gas of the first separation stage, is considered as the conditional dry gas, and the gas of the second separation stage – as the fatty gas. Efficiency was assessed by the results of changes in the wells flow rate. It was noted that the injection of gas of the second separation stage increases the displacement coefficient by 4 % relative to the injection of dry gas. The effect is achieved due to the increase of the fatty gas volume, thus leading to the residual oil washing away from the high viscosity zone in the porous space.

It is proposed to inject gas into mixtures with water of high hydrocarbons concentration by alternating the rims of dry and fatty gases within no less than least 5...6 months, moreover, to control the volume of gas in the rims and to pump each at least 1 month.

 

Keywords: the efficiency of oil displacement; water-gas technologies; dry and fatty gases.

 

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UDC 622.276.63          DOI: 10.30713/0207-2351-2020-2(614)-41-47

 

LABORATORY STUDIES OF ACID IMPACT EFFICIENCY ON ROCKS
OF LOW-PERMEABLE TERRIGENOUS COLLECTORS (p. 41)

 

Vladimir Vladimirovich Mazaev, Cand. of tech. sci.

 

LLC "Tyumen Petroleum Research Center"

42, Maxim Gorky str., Tyumen, 625048, Tyumen region, Russian Federation,

e-mail: vvmazaev@tnnc.rosneft.ru

 

Nataliya Nikolaevna Tomchuk, Cand. of chem. sci.,

Ekaterina Aleksandrovna Shabalovskaya

 

University of Tyumen

6, Volodarsky str., Tyumen, 625003, Russian Federation,

e-mail: n.n.tomchuk@utmn.ru; e.a.shabalovskaya@utmn.ru

 

Ivan Sergeevich Shakhmatov

 

LLC "Koretest servis"

2a, Lenin str., Tyumen, 625003, Russian Federation,

e-mail: shahmatov_is@coretest.ru

 

The paper presents the results of studies on the acid compositions adaptation for treating the bottom-hole zone of reservoir rocks of Yu2–6 low-permeable terrigenous strata of the deposits, located in the south of the Tyumen region. It was revealed that the rocks of the objects under consideration are highly soluble both in the hydrochloric acid and in clay acid (a mixture of hydrochloric and hydrofluoric acids), herewith, in all the cases, the rocks solubility in acidic compositions significantly exceeds their carbonate content. Among the tested compositions, the clay-acidic composition has the maximum dissolving ability with a content of hydrofluoric acid of 3 % wt., which after neutralization forms the largest amount of a secondary sediment. To reduce the mass of such a precipitation while maintaining the effectiveness of the acid effect, a two-stage version of treating a core material by sequentially hydrochloric acid and then clay-acidic compositions is considered. This series of experiments demonstrated the best result when a clay acid composition with a hydrofluoric acid content of 1,5 % was used at their second stage. The procedure effectiveness was confirmed during filtration experiments on reservoir models. It is established that the two-stage acid treatment in combination with a depression effect resulted in 1,5...2,0 times possible increase of the recovery coefficient of the reservoir model permeability in oil as compared with the same indicator achieved after the killing fluid exposure.

 

Keywords: bottom-hole formation treatment; acid treatment of wells; rock solubility; secondary sediment; oil phase permeability; permeability recovery coefficient.

 

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UDC 622.276.8:665.622.43          DOI: 10.30713/0207-2351-2020-2(614)-48-49

 

REDUCTION OF ENERGY CONSUMPTION WHEN PRODUCING, COLLECTING
AND TRANSPORTING PRODUCTS FROM PERIPHERAL DEPOSITS (p. 48)

 

Rishat Minshagitovich Insafov

 

CJSC "Aloil"

63, Engels str., Bavly-city, 423930, Republic of Tatarstan, Russian Federation,

e-mail: aloil116@mail.ru

 

The paper summarizes the results of experimental studies of the technology that is applied to reduce energy consumption when recovering viscous, sulfurous oil by its pumping from the well bottom zone to the point of water cut oil processing. It is shown that the technology application in the water-cut wells equipped with individual downhole dispensers with the supply of complex chemicals solutions to the products allows to reduce energy consumption at the well bottom zone–well head–preparation section by 160 %.

 

Keywords: viscous oil; technology; water cut.

 

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UDC 622.276.5.001.5          DOI: 10.30713/0207-2351-2020-2(614)-50-56

 

DECONVOLUTION AS WELL TEST INTERPRETATION TOOL (p. 50)

 

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

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

Pavel Viktorovich Kryganov, Cand. of tech. sci.

 

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

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

e-mail: ivan@afanaskin.ru

 

Article describes deconvolution application (reverse convolution) for well test interpretation. State of the art approach to deconvolution described, that makes available optimization task sustainable solution. Detailed deconvolution application examples are described. New simplified deconvolution approach is developed for reservoir borders evaluation purposes.

 

Keywords: well test; deconvolution; convolution.

 

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UDC 622.276          DOI: 10.30713/0207-2351-2020-2(614)-57-60

 

CEMENTING OF A NEAR-WELL BOTTOM ZONE IN AN AGGRESSIVE ENVIRONMENT (p. 57)

 

Kamil Kamal Mehdiyev

 

SOCAR

121, Geidar Aliev prosp., Baku, AZ1029, Republic of Azerbaijan,

e-mail: Kamil.Mehdiyev@socar.az

 

The paper considers the interrelation between water-sand demonstrations and cement stone quality; the aggressive H2S environment is presented as the main reason for the deterioration of a grouting system physical-mechanical properties (flowability, setting time, strength).

The results of laboratory studies in various H2S environments with the addition of a certain amount of urea, calculated as a percentage ratio according to a dispersed medium, are presented and dependency graphs are built. Based on the results obtained, it was determined that in various H2S environments, it is possible to control the physical-mechanical properties of the grouting system by the addition of urea in the amount of 0,0036…0,0144 % to improve them and to get a cement stone that is stable in an aggressive environment.

 

Keywords: deposit; formation; well; H2S; aggressive medium; urea.

 

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UDC 622.276.53.054.4          DOI: 10.30713/0207-2351-2020-2(614)-61-65

 

CALCULATION OF LOADS ON A ROTATING ROD STRING IN DEVIATED OIL WELLS (p. 61)

 

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

Almaz Amirzyanovich Sharifullin, Cand. of tech. sci.

 

Sheshmaoil Management company LLC

a/ya 192, P.O. No. 8, Almetyevsk, 423458, Republic of Tatarstan, Russian Federation,

e-mail: isaeff-oil@yandex.ru

 

Mekhrali Mirzali Aliev, Dr. of tech. sci., Professor,

 

Almetyevsk State Oil Institute

2, Lenin str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation.

 

The analysis of oil well operation by using a rod screw pump shows that the most part of the pump repairs of the unit is caused by rods failures. Pumping rods vibration occurs due to wells directional profile. Computation of a rod string parameters with subsequent recommendations will provide increase of rods operational life. The paper presents the formula for determining the rigidity of the rod construction, the number of revolutions and the circular rotation frequency using the above-said discs in the most inclined parts of a wellbore. Dimensions of the mentioned disc have the major effect on the revolutions number change.

 

Keywords: screw rod pump; directional wellbore profile; sucker rod string; reduced disc; moment of inertia; rigidity; number of revolutions.

 

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UDC 622.242.424.2+624.014:539.343.04          DOI: 10.30713/0207-2351-2020-2(614)-66-75

 

STABILITY OF SUPPORT STANDS OF BLOCKS OF OFFSHORE DEEP-WATER STATIONARY STEEL PLATFORMS WHEN DEVELOPING OIL AND GAS DEPOSITS ON THE SHELF (p. 66)

 

Vladimir Georgievich Griguletskiy, Dr. of tech. sci., Professor

 

National University of Oil and Gas "Gubkin University"

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

e-mail: gvg-tnc@mail.ru

 

Alexander Yurievich Fursov

 

GUP RK "Chernomorneftegaz"

52, Kirova prosp., Simpheropol, 295000, Republic of Krym,  Russian Federation,

e-mail: alexandrpro3@gmail.com

 

The technology that is applied to install offshore steel stationary platforms (OSSP) at the site of the main work when developing a specific oil or gas field on the shelf is briefly described.

As an approximate calculation scheme of the OSSP support, a vertical elastic heavy rod is adopted, which experiences the combined impact of the distributed load qx from the forces of its own weight and the concentrated compressive force Pk equal to the weight of technological equipment, part of the weight of the deck unit and wave load.

Using the energy method of Rayleigh – Ritz in the form of S.P. Timoshenko for the specified conditions, simple analytical ratios that determine the "critical" values of the length (height) of the OSSP supports are obtained.

 

Keywords: supports; stability of equilibrium; bending energy; critical load value; critical length (height) of a support.

 

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CONGRATULATIONS ON THE ANNIVERSARY OF N.I.KHISAMUTDINOV

 

 

 

 

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