Oilfield Engineering

e-mail: FattahovMM@tmn.lukoil.com; BakirovDL@tmn.lukoil.com; BabushkinEV@tmn.lukoil.com; scherbakovav@tmn.lukoil.com; abdrahmanovrr@tmn.lukoil.com; ShalyapinDV@tmn.lukoil.com

²Industrial University of Tyumen

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

New approaches to the design of "energy efficient" profiles in wells with a large offset from the vertical are proposed. The calculations performed confirm the effectiveness of the proposed solutions.

Keywords: wells design; well profile; energy efficient profile; extended-reach wells; ERD.

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UDC 622.244.442.063 DOI: 10.30713/0207-2351-2020-10(622)-12-16

USE OF INHIBITING DRILLING MUD WHEN CONSTRUCTING HORIZONTAL WELLS
OF THREE CASING STRING DESIGN (p. 12)

Marina Germanovna Buyanova

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

19/17, Tsentralnaya str., Kogalym, 628483, Tyumen region, Khanty-Mansi autonomous territory − Yugra, Russian Federation,

e-mail: marina080506@mail.ru

Eduard Valerievich Babushkin, Cand. of tech. sci.

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: BabushkinEV@tmn.lukoil.com

Gennadiy Vasilievich Konesev, Dr. of tech. sci., Professor,

Rustem Adipovich Ismakov, Dr. of tech. sci., Professor

Ufa State Petroleum Technological University

1, Kosmonavtov str., Ufa, 450064, Republic of Bashkortostan, Russian Federation,

e-mail: konesev.burenie@mail.ru; ismakovrustem@gmail.com

Akhtyam Khalimovich Agliullin, Dr. of tech. sci., Professor

LLC "Center of Engineering Technologies"

3, of. 6, 1812 god str., Moscow, 121359, Russian Federation,

e-mail: dir@et.center

The effectiveness of using water-based inhibiting drilling fluid when constructing horizontal wells with a three casing string design at the fields of LLC "LUKOIL–Western Siberia" was evaluated. The possibility of reducing volume of drilling waste by reusing a drilling fluid is considered.

Keywords: horizontal well of a three casing string design; inhibiting drilling fluids; well wall stability; technical and economic indicators; drilling fluids reuse.

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UDC 622.276.7:622.245.67 DOI: 10.30713/0207-2351-2020-10(622)-17-21

TECHNOLOGICAL SOLUTIONS ON FLUSHING AND TREATMENT
OF ANNULUS SPACE OF SHANKS (p. 17)

Artur Kamilevich Shiriev,

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

Marsel Masalimovich Fattakhov,

Denis Sergeevich Svyatukhov

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: ShirievAK@tmn.lukoil.com; BakirovDL@tmn.lukoil.com; Fattahovmm@tmn.lukoil.com; SvyatuhovDS@tmn.lukoil.com

The paper presents the results of the analysis of technical solutions that allow for treatment of a well bottom zone (WBZ) and repair-isolation works, including flushing of the liner annular space by special compounds. Possible options for the implementation of a well bottom zone (WBZ) treatment with breaker compositions, the procedure for carrying out the work, the advantages and disadvantages of the options under consideration, as well as the criteria for their effective use are considered.

Keywords: well bottom zone (WBZ); repair and insulation works; well bottom zone (WBZ) treatment; filter cake; arrangement for the filter space flushing; breaker composition; restoration of permeability.

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UDC 622.245.42.001 DOI: 10.30713/0207-2351-2020-10(622)-22-26

SELECTION OF THE OPTIMUM GROUTING COMPOSITION USING
THE "DIGITAL TWIN" OF A WELL SUPPORT (p. 22)

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

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

Marsel Masalimovich Fattakhov,

Grigory Nikolaevich Gritsay,

Andrey Vladimirovich Belousov,

Vasily Vladimirovich Antonov

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: BakirovDL@tmn.lukoil.com; BurdygaVA@tmn.lukoil.com; FattahovMM@tmn.lukoil.com; GritsayGN@tmn.lukoil.com; BelousovAV@tmn.lukoil.com; AntonovVV@tmn.lukoil.com

Nail Ravilevich Galeev

LLC "LUKOIL−Western Siberia"

20, Pribaltiyskaya str., Kogalym, 628486, Tyumen region, Khanty-Mansi autonomous territory − Yugra, Russian Federation,

e-mail: Nail.Galeev@lukoil.com

A new method is proposed for selecting formulations of plugging materials for intervals cementing subject to dynamic impact during wells development and operation. Using the "digital twin" of the well support, the main directions of increasing its stability by selecting the optimal grouting composition have been determined.

Keywords: cement stone; stress; "digital twin"; modeling; collector; Poisson’s ratio; Young’s modulus; grouting composition.

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UDC 622.245.422.2 DOI: 10.30713/0207-2351-2020-10(622)-27-31

RESEARCH OF THE CEMENT STONE PHASE TRANSFORMATIONS TO FORM A LONG-LASTING WELL SUPPORT WITH A THERMAL GAS IMPACT ON THE FORMATION (p. 27)

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

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

Marsel Masalimovich Fattakhov,

Alexander Vasilievich Melekhov

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: BakirovDL@tmn.lukoil.com; BurdygaVA@tmn.lukoil.com; FattahovMM@tmn.lukoil.com; MelehovAV@tmn.lukoil.com

Vasily Pavlovich Ovchinnikov, Dr. of tech. sci., Professor,

Industrial University of Tyumen

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

e-mail: ovchinnikovvp@tyuiu.ru

One of the trends for increasing the efficiency of hard-to-recover hydrocarbon reserves production of the Bazhenov formation is the technology of a thermal gas impact on kerogen-containing rocks. To ensure proper tightness of wells cementing in such conditions, it is necessary to use heat-resistant plugging materials that can withstand thermal destruction during cyclic temperature changes.

The paper discusses the processes and mechanisms associated with the change in the phase composition of plugging materials under the influence of thermal corrosion, presents the results of X-ray phase studies that confirm their thermal stability.

Keywords: plugging materials; thermal corrosion; heat resistance; X-ray phase analysis; thermal gas impact; the Bazhenov Formation.

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UDC 622.24:550.832 DOI: 10.30713/0207-2351-2020-10(622)-32-37

SOME SPECIFIC FEATURES OF DRILLING COMPLEX ARCHITECTURE WELLS
IN OIL RESERVOIRS OF TYUMEN FORMATION OF SYMORYAKHSKOYE FIELD (p. 32)

Vitaliy Viktorovich Yudchits,

Rodion Evgenievich Litovar,

Sergey Vladimirovich Babenkov,

Alina Evgenievna Balakina

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: YudchitsVV@tmn.lukoil.com; LitovarRE@tmn.lukoil.com; BabenkovSV@tmn.lukoil.com; BalakinaAE@tmn.lukoil.com

Marat Yusupovich Sunarchin

LLC "LUKOIL−Western Siberia"

20, Pribaltiyskaya str., Kogalym, 628486, Tyumen region, Khanty-Mansi autonomous territory − Yugra, Russian Federation,

e-mail: Marat.Sunarchin@lukoil.com

The process of wells drilling support is an intelligent-engineering structure of interaction between highly-qualified specialists from different disciplines. Such multi-discipline organization allows to combine diverse experience and to make real-time decisions based on the most advanced and effective techniques and methods.

Keywords: complex architecture wells; wells drilling support; maximum contact with a reservoir.

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UDC 622.24.085.22+622.243.24 DOI: 10.30713/0207-2351-2020-10(622)-38-42

ASSESSMENT OF APPLICATION PROSPECTS OF MULTILATERAL WELLS CONSTRUCTION TECHNOLOGY WITHOUT USE OF MECHANICAL JOINTS (p. 38)

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

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

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

Marsel Masalimovich Fattakhov,

Alexey Evgenievich Yakovlev,

Andrey Valerievich Shcherbakov,

Ruslan Rafikovich Abdrakhmanov,

Pavel Aleksandrovich Bagaev

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: BakirovDL@tmn.lukoil.com; BabushkinEV@tmn.lukoil.com; BurdygaVA@tmn.lukoil.com; FattahovMM@tmn.lukoil.com; YakovlevAE@tmn.lukoil.com; scherbakovav@tmn.lukoil.com; abdrahmanovrr@tmn.lukoil.com; BagaevPA@tmn.lukoil.com

The possibility of using a new construction of multilateral wells without using mechanical joints is proposed and substantiated. It significantly reduces metreage-free operations and allows achievement of commercial rates comparable to those achieved in directional wells.

Keywords: multilateral well; well completion; TAML; mechanical joint.

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UDC 622.276+614.8.084 DOI: 10.30713/0207-2351-2020-10(622)-43-48

ANALYSIS OF WELLS CONSTRUCTION RISKS ASSESSING THE IMPACT
OF GEOLOGICAL-TECHNICAL DRILLING CONDITIONS
ON THE PROBABILITY OF PROBLEMS WITH THE WELL (p. 43)

Nadezhda Sergeevna Shirieva^1,2,

Artur Kamilevich Shiriev¹,

Rezeda Rafisovna Tlyasheva², Dr. of tech. sci., Professor

¹LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: belyaevans90@gmail.com; arturshiriev@gmail.com

²Ufa State Petroleum Technological University

1, Kosmonavtov str., Ufa, 450064, Republic of Bashkortostan, Russian Federation

The paper considers statistical data on accident rate in oil and gas production. Causes initiating fire and explosion hazardous situations in a drill site are studied.

As drill sites belong to hazardous industrial facilities, when managing industrial safety, it is necessary to carry out accident risk analysis at the design stage in order to identify hazards and undesired events.

According to the statistical analysis of complications, the criteria that influence the occurrence probability of problems initiating fire and explosion hazardous situations are determined.

As a result of the work executed, a method for calculation of quantitative risk assessment indices that considers well construction conditions is proposed. The proposed approach can be applied to forecast risk level for any territory when using initial data on accident rate of a definite field or a group of fields.

Keywords: accident rate; risk factor; hazard assessment; well.

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UDC 622.276 DOI: 10.30713/0207-2351-2020-10(622)-49-52

DATA CLUSTERING DURING A GEOLOGICAL-FIELD ANALYSIS (p. 49)

Marat Rafailevich Dulkarnaev, Cand. of tech. sci.

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

20, Pribaltiyskaya str., Kogalym, 628486, Tyumen region, Khanty-Mansi autonomous territory − Yugra, Russian Federation,

e-mail: Marat.Dulkarnaev@lukoil.com

Radmir Rufovich Yunusov

LLC "LUKOIL−Western Siberia"

20, Pribaltiyskaya str., Kogalym, 628486, Tyumen region, Khanty-Mansi autonomous territory − Yugra, Russian Federation,

e-mail: Radmir.Unusov@lukoil.com

Igor Vyacheslavovich Ryabov,

Petr Yurievich Lobanov,

Yuliya Evgenievna Radevich,

Alexander Anatolievich Ankudinov, Cand. of tech. sci.

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: RyabovIV@tmn.lukoil.com; LobanovPY@tmn.lukoil.com; RadevichYE@tmn.lukoil.com; AnkudinovAA@tmn.lukoil.com

Two groups of wells have been identified by the nature of water cut based on manual analysis and Microsoft Azure software. An algorithm for working with the program is developed and a comparative analysis of the results obtained is presented.

Keywords: water cut; data analysis; exponential dependence; clustering.

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UDC 622.276.4"722":622.276.346 DOI: 10.30713/0207-2351-2020-10(622)-53-59

IDENTIFICATION OF ZONES AND SOURCES OF ADVANCED WATERING (p. 53)

Andrey Vasilievich Safonov,

Mikhail Alekseevich Kondratev

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: SafonovAV@tmn.lukoil.com; KondratevMA @tmn.lukoil.com

The paper considers a method for identifying the most problematic areas with advanced water cut and an integrated approach for determining the sources of water cut in wells. The algorithm used is universal and allows obtaining maps of water cut intensity and oil production potential, as well as maps of the main sources of water cut in any field.

Keywords: water cut; source of watering; watering intensity; oil production potential; Voronoi diagrams; development of reserves; behind the annulus circulation; watering cone; breakthrough of water; geological-technical measures; limiting of water inflow.

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UDC 622.276.56 DOI: 10.30713/0207-2351-2020-10(622)-60-69

APPROACHES TO DISTRIBUTION OF SAMPLES AND INJECTION IN JOINTLY OPERATED FORMATIONS OF A MULTI-LAYER FIELD (p. 60)

Anton Vladimirovich Grezin

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: GrezinAV@tmn.lukoil.com

The problem of distribution of oil and liquid production between jointly operated reservoirs is considered.

Using the technique of fluid production separation according to the complex conductivity parameter kh, as well as taking into account the results of field geophysical studies, the redistribution of fluid production and water injection between the BS¹₁₀, BS²₁₀, BS¹₁₁ and BS²₁₁ formations was carried out monthly for the entire development period of the field.

For independent wells of each of the formations, characteristic dependences of the current water cut on the specific cumulative fluid production were built. Using these dependencies, as well as the previously distributed fluid production, the oil production was redistributed from wells jointly operating several reservoirs.

Thus, the adjusted values of oil production during each month of each well operation were obtained.

The results of analytical calculations are compared with the calculations obtained during use of joint geological-hydrodynamic model (GHDM) of the formations; calculations of the GGDM proved the greater reliability of the production division according to the applied method in comparison with the initial distribution (according to monthly operational reports (MOR)).

The calculation results made it possible to clarify the distribution of the cumulative oil production and, as a consequence, residual reserves between the formations of the considered site of the field and propose a program of geological-technical measures for each of the formations.

Keywords: jointly operated formations; redistribution of production and injection; field geophysical research; conductivity; geological-technical measures.

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UDC 622.276.1./4 DOI: 10.30713/0207-2351-2020-10(622)-70-74

EXPERIENCE OF THE PROBABILISTIC APPROACH APPLICATION WHEN FORMING
THE OPTIMAL OPTION FOR THE BV₇ FORMATION DEVELOPMENT
OF THE YUZHNO-VYINTOISKY FIELD (p. 70)

Alexey Yurievich Sentsov,

Sergey Vasilievich Molokanov,

Igor Vyacheslavovich Ryabov,

Alexander Anatolievich Ankudinov, Cand. of tech. sci.,

Yuliya Evgenievna Radevich,

Nataliya Sergeevna Polyakova

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: SentsovAY@tmn.lukoil.com; MolokanovSV@tmn.lukoil.com; RyabovIV@tmn.lukoil.com; AnkudinovAA@tmn.lukoil.com; RadevichYE@tmn.lukoil.com; PolyakovaNS@tmn.lukoil.com

Marat Rafailevich Dulkarnaev, Cand. of tech. sci.

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

20, Pribaltiyskaya str., Kogalym, 628486, Tyumen region, Khanty-Mansi autonomous territory − Yugra, Russian Federation,

e-mail: Marat.Dulkarnaev@lukoil.com

The paper discusses a methodological approach to the design of putting into development of the marginal zones of partially drilled oil deposits, which provides for the creation of probabilistic geological models that allow formation of various development scenarios under conditions of geological uncertainty of the areas under consideration.

Keywords: probabilistic model; geological model; uncertainty.

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UDC 622.276.43 DOI: 10.30713/0207-2351-2020-10(622)-75-81

APPLICATION OF METHODOLOGICAL APPROACHES TO THE QUANTITATIVE ESTIMATION
OF THE EFFICIENT WATER INJECTION TO ENHANCE OIL RECOVERY
OF DEVELOPED FIELDS (p. 75)

Semen Fedorovich Mulyavin, Dr. of tech. sci.

Tyumen Industrial University

70, Melnikaite str., Tyumen, 625039, Russian Federation,

e-mail: muljavinsf@tyuiu.ru

Dmitry Alimovich Rozbaev,

Sergey Andreevich Fufaev,

Sergey Viktorovich Semenov,

Andrey Anatolievich Kornev

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: RozbaevDA@tmn.lukoil.com; FufaevSA@tmn.lukoil.com; SemenovSV@tmn.lukoil.com; KornevAA@tmn.lukoil.com

The article is devoted to the urgent problem of estimating the efficient injection volume in oil fields developed by using reservoir pressure maintenance systems. On the basis of generalization of the available experience, for the terminology unambiguity, the definitions of total, efficient and inefficient water injection have been developed. The concept of distribution of inefficient water injection volume into three components – surface, technical and technological losses – has been proposed. The standard decision-making scheme when analyzing inefficient water injection, including the main methods for quantitative estimation of its volumes has been developed. On the example of two objects, being developed, the technological estimation of the necessity of injection water volume regulation is presented.

A strategy for further progress of the development system has been identified, and a program of geological-technical measures has been drawn up to optimize the reservoir pressure maintenance system. The results of the program fulfillment are presented.

Keywords: methodological approach; water-flooding; system of reservoir pressure maintenance; efficient water injection; losses of water injection volumes; hydrodynamic modeling; geological-technical measures program.

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UDC 622.276.63 DOI: 10.30713/0207-2351-2020-10(622)-82-86

INFLUENCE OF ACID COMPOSITION ON THE QUALITY OF POLYMER USED
IN THE TECHNOLOGIES FOR ENHANCING OIL RECOVERY (p. 82)

Sergey Fanilovich Mambetov,

Elena Vasilievna Shamsutdinova

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

19/17, Tsentralnaya str., Kogalym, 628486, Tyumen region, Khanty-Mansi autonomous territory − Yugra, Russian Federation,

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

Alexey Andreevich Ishkov,

Evgeny Nikolaevich Malshakov

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: IshkovAA@tmn.lukoil.com; MalshakovEN@tmn.lukoil.com

Laboratory studies were carried out to determine the effect of an acid composition on the solubility of cross-linked polymer compositions and their characteristics after interaction. It was determined that a solution of inhibited hydrochloric acid (12 % concentration by volume) is able to partially dissolve the polymer gel. Under a prolonged impact of the acid composition on the cross-linked polymer gel (more than 24 hours), the latter does not dissolve completely, but undergoes structural changes, expressed by its shrinkage and strengthening. The results of filtration studies using composite core models confirm the partial dissolution of the cross-linked gel – the restoration of the rock permeability after the injection of the cross-linked polymer system with subsequent treatment by an acid composition does not occur completely.

Keywords: reservoir properties; alignment of the injectivity profile; redistribution of filtration flows; waterproofing barrier; restoration of rock permeability; average daily flow-rate; water cut.

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