ISSN 2413-5011

Scientific-technical journal

GEOLOGY, GEOPHYSICS

AND DEVELOPMENT OF OIL AND GAS FIELDS

                                                                                                            published since 1992

November 2016                                     ¹ 11                                  12 issues per year

 

CONTENÒS

 

OIL AND GAS PROSPECTING

 

Kolpakov V.V., Spiridonov D.A., Shayhutdinova G.Kh., Saetgaleev Ya.Kh., Koynova N.A., Galiev T.R. Oil content and geological structure of the normal and anomalous sections of bazhenov suite in Kogalym region (p. 5-17)

 

Kasatkin V.E., Gilmanova N.V., Moskalenko N.Yu., Smolyakov G.A., Chernoskulova V.A., Bazhenova E.S., Lyovkina M.P. Analysis of achimov reservoirs’ texture heterogeneity of Imilorsky deposit when assessing the nature of saturation (p. 18-23)

 

GEOLOGICAL MODELING

 

Malyutin D.V., Bakirov D.L., Babushkin E.V., Svyatukhov D.S. Geomechanical modeling to solve the problem of wells construction in LLC "LUKOIL–Western Siberia" (on the example of Vategansky deposit) (p. 23-26)

 

GEOPHYSICAL RESEARCH WORK

 

Kuzmichev O.B. A method of the nature assessment of complicatedly-built oil-saturated reservoirs, including low-resistant ones, in the fields of LLC "LUKOIL–Western Siberia" (p. 26-32)

 

DRILLING AND CONSTRUCTION OF THE WELLS

 

Shkandratov V.V., Bakirov D.L., Burdyga V.A., Babushkin E.V., Voronkova N.V., Gritsay G.N. Sidetracks’ cementing quality improvement drilled by hydrocarbon-based solutions use (p. 33-36)

 

Fattakhov M.M., Bakirov D.L., Bagaev P.A., Vityaz A.V., Ismakov R.A. Planning of multibranched wells profiles (p. 36-48)

 

Bakirov D.L., Fattakhov M.M., Burdyga V.A., Babushkin E.V., Volokitin D.N., Kovalev V.N., Shurupov A.M., Fatikhov V.V., Galeev N.R., Yunusov R.R. Modern experience of completion of horizontal wells’ lightweighted constructions (p. 48-53)

 

DEVELOPMENT OF OIL AND GAS FIELDS

 

Vakhrushev V.V., Melnikov V.N., Moskvitin S.A. Use of engineering techniques to predict technological indicators of development (p. 53-58)

 

Aptulin D.V., Mavletdinov M.G. Algorithm of wells network substantiation to maximize hydrocarbons recovery from the oil rim of Nakhodka oil and gas field (p. 58-62)

 

Kordik K.E., Shkandratov V.V., Bortnikov A.E., Leontyev S.A. Organization of control over the quantity of gas-oil ratio as a mandatory requirement when constructing a unified system of accounting of associated petroleum gas production (p. 63-67)

 

Vorobev I.V. Separate accounting of hydrocarbons production in Severo-Gubkinsky oil and gas condensate field (p. 68-72)

 

Maslak O.V., Krasheninina O.V. Approbation of "Methodical guidelines for the preparation of projects of technical development hydrocarbon deposits" (p. 73-75)

 

METHODS OF PRODUCING EFFECT ON A DEPOSIT AND RAISING OIL RECOVERY

 

Bukharov A.V., Ivanova Yu.I., Shabelyansky V.A., Astafev D.A. Individual approach to projecting of hydraulic fracturing of a formation at the final stage of fields operation (p. 75-80)

 

Makhmutov R.R., Salimov F.S., Makienko V.V., Astafev D.A. Expansion of effective use of chemical methods applied to enhance oil recovery (EOR) in low permeable reservoirs on the example of Povkhovsky field of territorial-production company (TPC) "Povkhneftegaz" (p. 81-83)

 

Cherepanova N.A., Kladova A.V. Assessment of structural-mechanical properties of the gel-like systems (p. 84-87)

 

Information on the articles (p. 88-98)

 

 

Information on the articles

 

UDC 622.276.1/.4(571.1):553.98

 

OIL CONTENT AND GEOLOGICAL STRUCTURE

OF THE NORMAL AND ANOMALOUS SECTIONS OF BAZHENOV SUITE

IN KOGALYM REGION (p. 5)

 

Kolpakov Vitaly Viktorovich, Head of the Research Center of Core and Formation Fluids,

Spiridonov Dmitry Anatolievich, 2nd category geologist,

Shayhutdinova Gulnara Khanasovna, engineer,

Saetgaleev Yagfar Khalitovich, Head of the Department of Lithologic-Physical Research,

Koynova Natalia Anatolievna, 2nd category geologist,

Galiev Timur Railevich, Head of Laboratory

 

"KogalymNIPIneft", the branch of LLC "LUKOIL-Engineering" in Tyumen

19, Tsentralnaya str., 628481, Kogalym, Khanty-Mansi autonomous territory – Yugra, Russian Federation,

tel.: (34667) 6-29-55, ext. 123,

e-mail: KolpakovVV@nipi.ws.lukoil.com, SpiridonovDA@nipi.ws.lukoil.com, ShayhutdinovaGH@nipi.ws.lukoil.com, litolog@nipi.ws.lukoil.com, KoynovaNA@nipi.ws. lukoil.com, Galiev@nipi.ws.lukoil.com

 

Russian oil industry is known for its steady trend of involvement of complicatedly-composed and hardly-recoverable oil and gas reserves into recovery. An important role is played by the decrease of an oil field’s traditional reserves and high water flooding of crude oil production and the main thing is reduction of the mineral extraction tax. In Russia the most prospective in this respect are siliceous clay-carbonate rocks of Bazhenov suite.

Previously, the territory of PJSC "LUKOIL" activity in the Middle Pre-Ob region was considered unpromising in view of oil inflows from Bazhenov suite. However, numerous direct signs of oil saturation in Bazhenov suite core Formation and the test results suggest the opposite point of view. The main prospects of getting oil inflows Bazhenov suite are associated with the development of carbonate rocks. The authors of the present article identified some interlayer of carbonate rocks located in the lower part of the suite’s section in the territory of Kogalym region. This carbonate rocks interlayer is spread over almost the entire area under study. For the first time a map of a potential reservoir spreading is built based on the core samples and GIS 3300 wells’ logs of exploration and production wells. These interlayers are potential reservoirs and possibly play the role of filter channels for Bazhenov suite hydrocarbons.

 

Key words: Bazhenov suite; anomalous section of Bazhenov suite; oil; siliceous rocks; carbonate rocks; potential reservoir.

 

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UDC 553.98(571.1)

 

ANALYSIS OF ACHIMOV RESERVOIRS’ TEXTURE HETEROGENEITY

OF IMILORSKY DEPOSIT WHEN ASSESSING THE NATURE

OF SATURATION (p. 18)

 

Kasatkin Victor Egorovich, Head of Managerial Department,

Gilmanova Natalia Vyacheslavovna, Chief Specialist,

Moskalenko Natalia Yurievna, Head of Department,

Smolyakov Gennady Anatolievich, Deputy Head of Department,

Chernoskulova Valeria Antonovna, engineer,

Bazhenova Elizaveta Sergeevna, engineer,

Lyovkina Maria Pavlovna, 2nd category engineer

 

"KogalymNIPIneft", the branch of LLC "LUKOIL-Engineering" in Tyumen

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

tel.: (3452) 54-53-49, 54-50-46, 54-53-24, 54-52-71, 54-50-68,

e-mail: KasatkinVE@tmn.lukoil.com, GilmanovaNV@tmn.lukoil.com, MoskalenkoNY@tmn.lukoil.com, SmolyakovGA@tmn.lukoil.com, ChernoskulovaVA@tmn.lukoil.com, BazhenovaES@tmn.lukoil.com, LyovkinaMP@tmn.lukoil.com

 

The article discusses some specific features of the internal structure of Achimov productive reservoirs. The results of the analysis of the rocks’ mineralogical composition, rocks’ lithology identification, the quantitative and qualitative characteristics of the material composition, structure and characteristics of the pore space. To choose the object to be subjected to operation there solved the problem of conditional limits of reservoir rocks parameters. At the same time the effect of texture heterogeneity on reservoirs’ fluid-saturation along the section derived from the analysis of the core luminescence intensity in ultraviolet light (UV), filtration properties and the results of beds testing is taken into account. Estimated permeability limit value in conditions of reservoirs oil saturation for productive formations of Achimov thickness makes nearly 1,3 mD with account of the ambiguity zone of 0,25…3 mD. It is noted that reduction of interlayers height over water-oil contact (WOC) brings increase of permeability limit value for oil saturation of the layers (for example, at heights of 1…2 m Kpr.l for oil saturated interlayers can be as high as 3 mD, at the height of more than 20 m – 0,6 mD).

 

Key words: rock texture; pore space structure; core luminescence under ultraviolet light; porosity; permeability; thickness; oil saturation; limit values.

 

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UDC 622.24.001.57(571.1)

 

GEOMECHANICAL MODELING TO SOLVE THE PROBLEM

OF WELLS CONSTRUCTION IN LLC "LUKOIL–WESTERN SIBERIA"

(ON THE EXAMPLE OF VATEGANSKY DEPOSIT) (p. 23)

 

Malyutin Dmitry Vladimirovich, Deputy Head of the Department "Engineering and Wells Construction Technology",

Bakirov Daniyar Lyabipovich, Deputy Director of the branch of Scientific Work in the field of Wells Construction,

Babushkin Edward Valerievich, Head of Department of Drilling Fluids,

Svyatukhov Denis Sergeevich, leading engineer, Department of Authorial Supervision

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

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

tel.: (3452) 54-51-69,

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

 

A significant reduction of reservoir pressure at a number of sites of multilayer fields put into development in the last century, requires searching for new mechanisms to design and implement safe drilling. The article considers geo-mechanical factor influence on possible complications during sidetracks drilling within the boundaries of Vategansky field as well as on the role of geo-mechanical modeling when planning wells with large zenith angles (more than 80°) in difficult geological conditions (unstable clay deposits and strata-collectors with abnormally low pressure of a formation, ALPF).

 

Key words: geo-mechanical 1D modeling; wellbore stability; abnormally low pressure of a formation (ALPF).

 

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UDC 622.276.1/.4(571.1):550.832.5

 

A METHOD OF THE NATURE ASSESSMENT

OF COMPLICATEDLY-BUILT OIL-SATURATED RESERVOIRS,

INCLUDING LOW-RESISTANT ONES, IN THE FIELDS

OF LLC "LUKOIL–WESTERN SIBERIA" (p. 26)

 

Kuzmichev Oleg Borisovich, Head of the Department

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

15, Druzhba Narodov str., 628481, Kogalym, Khanty-Mansi autonomous territory – Yugra, Russian Federation,

tel.: (34667) 6-52-20,

e-mail: kob@nipi.ws.lukoil.com

 

The article presents some methodology developed to evaluate the hydrocarbon saturation factor of complicatedly-built reservoirs, including low-resistive ones, that is based on the standard logging data by applying the method of spontaneous polarization (SP) together with a set of electrical methods of geophysical researching, where the static potential Esp is calculated by IntREst© program followed by construction of functional dependence of "core–GIS" of Esp static potential on the bulk volume of water – W. An example of interpretation of low-resistivity oil-saturated reservoirs of Jurassic deposits of Maloklyuchevoe field developed by LLC "LUKOIL–Western Siberia" is submitted.

For a more accurate measurement of spontaneous polarization (SP) potential, "KogalymNIPIneft", (the branch of LLC "LUKOIL–Engineering" in Tyumen) developed some method of bigradient (divergent) logging of spontaneous polarization. SP bigradient logging method differs from the existing method of SP potential measurement by its higher sensitivity to a formation area, unchanged by drilling mud penetration and a higher resolution along the well axis (the section division into interlayers). Use of SP potential measured by the method of SP bigradient (divergent) logging with account of the above-mentioned methodology will provide more accurate values of the hydrocarbon saturation factor of complicatedly-built reservoirs, including low-resistive ones.

 

Key words: low-resistance collectors; spontaneous polarization potential (SP); static potential; volumetric moisture content; hydrocarbon saturation factor.

 

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UDC 622.245.42:541.183

 

SIDETRACKS’ CEMENTING QUALITY IMPROVEMENT DRILLED

BY HYDROCARBON-BASED SOLUTIONS USE (p. 33)

 

Shkandratov Viktor Vladimirovich, Deputy General Director of LLC "LUKOIL–Engineering", Director of "KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen,

Bakirov Daniyar Lyabipovich, Deputy Director of the branch of Scientific Work in the field of Wells Construction,

Burdyga Vitaly Alexandrovich, Head of the Department "Wells Construction Technology",

Babushkin Edward Valerievich, Head of Department of Drilling Fluids,

Voronkova Natalia Vasilievna, Head of the Laboratory of Research and Analysis of drilling fluids,

Gritsay Grigory Nikolaevich, Head of Laboratory "Implementation of New Technologies of Wells Cementing"

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

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

tel.: (3452) 54-51-69,

e-mail: PopkovaNV@tmn.lukoil.com, BakirovDL@tmn.lukoil.com, BurdigaVA@tmn.lukoil.com, BabushkinEV@tmn.lukoil.com, VoronkovaNV@tmn.lukoil.com, GritsayGN@nipi.ws.lukoil.com

 

Buffer fluid formulation for wells cementing drilled by using hydrocarbon-based solutions that allows increasing the indicator of the cement stone adhesion with the casing string and the rock is developed.

Testing of the developed composition compatibility with wells liquids of various concentrations proved the fact that the buffer fluid is fully compatible both with the hydrocarbon-based drilling mud and the plugging solution.

Analysis of the results obtained showed high efficiency of the new technology and a substantial increase of continuous contact share with the casing string and the rock of the test wells.

 

Key words: sidetracking; hydrocarbon-based solution; detergency; buffer liquid; cementing quality; adhesion.

 

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UDC 622.24.085.24:622.276.1/.4.001

 

PLANNING OF MULTIBRANCHED WELLS PROFILES (p. 36)

 

Fattakhov Marsel Masalimovich, Head of the Department "Engineering and Wells Construction Technology",

Bakirov Daniyar Lyabipovich, Deputy Director of the branch of Scientific Work in the field of Wells Construction,

Bagaev Pavel Alexandrovich, Head of the Laboratory of Individual Projects,

Vityaz Alexey Valerievich, leading researcher of the department of "Engineering and Wells Construction Technology"

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

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

tel.: (3452) 54-51-69,

e-mail: Fattahovmm@tmn.lukoil.com, BakirovDL@tmn.lukoil.com, BagaevPA@tmn.lukoil.com, VityazAV@tmn.lukoil.com

 

Ismakov Rustem Adipovich, Vice-Rector for Research and Innovation

 

"Ufa State Oil Technical University"

 

The article presents approaches to planning profiles of multi-branched wells. Herewith, it is necessary to consider the possibility of complexity rapid ranking of multi-branched wells profiles by the proposed criteria. The number of branches and the length of the main GU of multi-branched wells can be quickly determined by the proposed express-formulas and graphs, followed by engineering calculations according to the accepted technical and technological solutions.

In view of the above-mentioned facts, at the stage of multi-branched wells planning both when preparing the project document of a deposit development and at the planning stage of its drilling it is possible to quickly evaluate the difficulty of wells-candidates to be subjected to multi-branched drilling followed by the calculation of the multi-branched wells adopted to implementation.

 

Key words: planning of wells profiles; multi-branch wells.

 

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UDC 622.245.7:622.243.24

 

MODERN EXPERIENCE OF COMPLETION

OF HORIZONTAL WELLS’ LIGHTWEIGHTED CONSTRUCTIONS (p. 48)

 

Bakirov Daniyar Lyabipovich, Deputy Director of the branch of Scientific Work in the field of Wells Construction,

Fattakhov Marsel Masalimovich, Head of the Department "Engineering and Wells Construction Technology",

Burdyga Vitaly Alexandrovich, Head of the Department "Wells Construction Technology",

Babushkin Edward Valerievich, Head of Department of Drilling Fluids,

Volokitin Denis Nikolaevich, Head of the Department "Development of Budget Estimates and Norms"

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

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

tel.: (3452) 54-51-69,

e-mail: BakirovDL@tmn.lukoil.com, Fattahovmm@tmn.lukoil.com, BurdigaVA@tmn.lukoil.com, BabushkinEV@tmn.lukoil.com, Volokitin@nipi.ws.lukoil.com

 

Kovalev Vitaly Nikolaevich, Deputy General Director in the field of Drilling,

Shurupov Alexander Matveevich, Head of the Department "Technological Management of Drilling",

Fatikhov Vadim Valerievich, Chief of the Technology Department,

Galeev Nail Ravilovich, Chief of the service of sidetracks drilling of the Technology Department,

Yunusov Radmir Rufovich, Head of the Geology Department

 

LLC "LUKOIL–Western Siberia"

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

tel.: (34667) 6-11-35,

e-mail: Aleksandr.Shurupov@lukoil.com, Vadim.Fatihov@lukoil.com, Nail.Galeev@lukoil.com, Radmir.Unusov@lukoil.com

 

Use of three-column constructions with columns’ 146-mm full bore diameter of the horizontal section provides more technological completion of wells and allows carrying out repeated multistage fracturing of a formation and performing researches and repair-insulation works applying traditional technologies and equipment. The construction can be put into operation with the help of the drilling equipment and casing strings used in directional wells, thus minimizing the use of the non-standard equipment and excluding a number of non-traditional technological operations.

 

Key words: horizontal well; repeated multistage fracturing of a formation.

 

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UDC 622.276.1/.4(571.1)

 

USE OF ENGINEERING TECHNIQUES TO PREDICT

TECHNOLOGICAL INDICATORS OF DEVELOPMENT (p. 53)

 

Vakhrushev Vladimir Vitalievich, Deputy Head of the Center "Design and Monitoring of fields development" by Methodologies,

Melnikov Vitaly Nikolaevich, Head of the Department "Investment Projects",

Moskvitin Sergey Alexandrovich, leading specialist

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

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

tel.: (3452) 54-53-05, 54-52-70,

e-mail: VahrushevVV@tmn.lukoil.com, MelnikovVN@tmn.lukoil.com, MoskvitinSA@tmn.lukoil.com

 

The article is devoted to the problems of preparation of engineering techniques applied to quickly predict the dynamics of technological parameters development (without application of hydrodynamic models), to raise the objective assessment of the development current state as well as to improve substantiation of the prediction of the dynamics of technological indicators of sites, deposits and formations development on the basis of the data, obtained by the results of special studies of relative phase permeability. The article proves the possibility and describes the mechanism of Buckley – Leverett function (J-function) practical application to construct a displacement theoretical characteristic and to predict the dynamics of the fluid flow rate.

The effect of bottom water is analyzed and developed the algorithm applied to construct curves of displacement theoretical characteristic and theoretical productivity is developed with account of the presence of water-saturated interlayers of various thickness.

The algorithm amending the configuration of the displacement theoretical characteristics in case of wells putting into operation followed by fracturing of a formation after its drilling is given as well.

 

Key words: Buckley – Leverett function; displacement theoretical characteristic; relative phase permeability; theoretical productivity by relative phase permeability.

 

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UDC 622.276.344

 

ALGORITHM OF WELLS NETWORK SUBSTANTIATION

TO MAXIMIZE HYDROCARBONS RECOVERY FROM THE OIL RIM

OF NAKHODKA OIL AND GAS FIELD (p. 58)

 

Aptulin Denis Vasilievich, 1st category engineer,

Mavletdinov Mikhail Grigorievich, Head of the Department "Design and Monitoring of Fields Development in Bolshekhetskaya depression"

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

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

tel.: (3452) 54-51-30, 54-51-02,

e-mail: AptulinDV@tmn.lukoil.com, MavletdinovMG@tmn.lukoil.com

 

To justify the optimal wells location system in order not only to maximize hydrocarbons recovery factors but also to achieve positive indicators of economic efficiency, there used an algorithm that provides for a phased approach to solving the problems of various uncertainties identification when assessing the impact of selecting combinations of technological solutions and restrictions. PK16-17 formation of the reservoir located in the area of Well No. 48 of Nakhodka oil and gas field was taken as a model for making calculations.

The applied algorithm allowed identifying the most effective systems of development and placement of wellbores in the productive section, without putting the gas cap into the development at the initial period.

The conducted feasibility study of the scenarios considered proves unprofitability of oil rim development. However, while minimizing investments, through the allocation of the first phase of the development and commissioning of the only high-potential wells with cumulative production of no less than 200 million m3 it becomes possible to obtain economic profitability of 0,13 billion rubles. It allows to consider the object’s putting into operation after additional studying to be conducted in 2017–2018.

 

Key words: wells network; pressure maintenance; development systems; drilling of a horizontal wellbore; oil recovery factor.

 

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UDC 622.276.346.2

 

ORGANIZATION OF CONTROL OVER THE QUANTITY OF GAS-OIL RATIO

AS A MANDATORY REQUIREMENT WHEN CONSTRUCTING A UNIFIED SYSTEM

OF ACCOUNTING OF ASSOCIATED PETROLEUM GAS PRODUCTION (p. 63)

 

Kordik K.E.,

Shkandratov Victor Vladimirovich, Deputy General Director of LLC "LUKOIL–Engineering" – Director of "KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen,

Bortnikov A.E.

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

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

 

Leontyev S.A.

 

"Tyumen Industrial University"

 

The article describes the development principles of a unified system of accounting of associated petroleum gas for the entire process chain from a wellhead to a gas consumption object. At the same time the organization of accounting of associated petroleum gas is linked with researches to be carried out to determine the gas-oil ratio (GOR). Each structural level of accounting of production of associated petroleum gas has its own methods and techniques of GOR determination, requirements for the organization of the research ensuring the accuracy and reliability of the results of laboratory experiments and field measurements are accepted. The existing inconsistencies in approaches to conducting research to determine GOR at various stages of fields’ development as well as structural levels of accounting for production of associated petroleum gas are mentioned. For example, The information about gas amount that is delivered to Lokosovsky gas processing plant served the basis to analyze the influence of GOR changes on the indicators of activities of a gas consumption object (the final link in the technological chain of accounting of the associated petroleum gas).

 

Key words: gas oil rate (GOR); associated petroleum gas; unified system of accounting of associated petroleum gas from a wellhead to a gas consumption object.

 

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UDC (622.276+622.279).001(571.121)

 

SEPARATE ACCOUNTING OF HYDROCARBONS PRODUCTION

IN SEVERO-GUBKINSKY OIL AND GAS CONDENSATE FIELD (p. 68)

 

Vorobev Ivan Vasilievich, leading engineer

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

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

tel.: (3452) 54-52-15,

e-mail: VorobevIV@tmn.lukoil.com

 

Theoretical studies and experience of development of thin oil rims prove the fact that operation of deposits of this type by oil wells makes technologically inevitable extraction of oil, condensate, dissolved gas, gas, gas from gas caps, formation and injected water. In the context of the joint collection and preparation of products by instrumental measurements it is technically possible to use only direct accounting of liquid (oil and condensate) and gas (dissolved gas, gas of the gas cap) hydrocarbon components of the formation mixture. Further separation of products for each type of hydrocarbon raw material can only be done by calculation.

The paper presents a methodology that allows to carry out calculations on the separation of hydrocarbons (oil, condensate, dissolved gas, gas of gas caps and free gas) produced by oil wells. The methodology is based on the material balance equations, approved PVT properties of reservoir fluids and field data.

Condensate released from the extracted liquid hydrocarbons will increase the accuracy of hydrocarbons production accounting for each well of Severo-Gubkinskoye field, it allow to build the best maps of residual mobile reserves and, consequently, to localize the areas of residual mobile oil reserves for carrying out effective geological and technical measures.

 

Key words: liquid hydrocarbons; gas; oil; condensate; reservoir pressure; gas content; condensate content; gas-oil rate (GOR).

 

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UDC 622.276.1/.4.001.89

 

APPROBATION OF "METHODICAL GUIDELINES FOR THE PREPARATION

OF PROJECTS OF TECHNICAL DEVELOPMENT HYDROCARBON DEPOSITS"

(p. 73)

 

Maslak Olga Vladislavovna, Head of the Department,

Krasheninina Oksana Vladimirovna, 2nd category economist

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

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

tel.: (3452) 54-52-04, 54-51-05,

e-mail: MaslakOV@tmn.lukoil.com, KrashenininaOV@tmn.lukoil.com

 

The present article presents a comparative analysis of "Methodological recommendations on the preparation of technical projects of hydrocarbon fields development" (Annex to the Order ¹ 61 of the Russian Ministry of Natural Resources of 21.02.2007), being in force up to 18.05.2016, and temporary guidelines. In addition, the produced technical-economic evaluation of development options efficiency made according to current and temporary methodological recommendations for Urevskoye fields in the sites section and a field in the whole.

According to The results of the study conducted make it possible to conclude that implementation of temporary methodological guidelines will have a positive impact on revenues of subsoil users and the state received from fields development, will allow to maintain the existing fields’ oil production at the current level as well as to continue work on the development of new license areas.

 

Key words: oil; field; methodological guidelines; efficiency evaluation; profitability; net present value; profitably recoverable reserves; economic efficiency.

 

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UDC 622.276.66.001.24(571.1)

 

INDIVIDUAL APPROACH TO PROJECTING OF HYDRAULIC FRACTURING

OF A FORMATION AT THE FINAL STAGE OF FIELDS OPERATION (p. 75)

 

Bukharov Alexander Valerievich, chief specialist,

Ivanova Yuliya Igorevna, Deputy Head of the Department "New Methods and Technologies – Oil Advanced Recovery and Oil Production Stimulation",

Shabelyansky Vladimir Alexandrovich, Head of the Department,

Astafev Dmitry Anatolyevich, Chief of the Center

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

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

tel.: (3452) 54-51-62, 54-51-57, 54-50-59,

e-mail: BuharovAV@tmn.lukoil.com, IvanovaYI@tmn.lukoil.com, ShabelyanskiVA@tmn.lukoil.com, AstafevDA@tmn.lukoil.com

 

The article considers an individual approach to carrying out the hydraulic fracturing of a formation in the wells of LLC "LUKOIL–Western Siberia" deposits, which includes the complex (full-cycle) support of the hydraulic fracturing of a formation starting with the selection of a candidate well and finishing by frac-engineering support. High relevance and appropriateness of this approach continuation are shown by the two-stage hydraulic fracturing of a formation in Povkhovsky field of wells with water cut of more than 90 %.

 

Key words: hydraulic fracturing of a formation; adapted technologies; oil production growth; two-stage hydraulic fracturing of a formation.

 

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UDC 622.276.1/.4(571.1)

 

EXPANSION OF EFFECTIVE USE

OF CHEMICAL METHODS APPLIED TO ENHANCE OIL RECOVERY (EOR)

IN LOW PERMEABLE RESERVOIRS ON THE EXAMPLE OF POVKHOVSKY FIELD

OF TERRITORIAL-PRODUCTION COMPANY (TPC) "POVKHNEFTEGAZ" (p. 81)

 

Makhmutov Rustem Ravilovich, leading engineer

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Kogalym

15, Druzhba Narodov str., 628481, Kogalym, Russian Federation,

tel.: (34667) 6-53-72,

e-mail: mahmutovrr@nipi.ws.lukoil.com

 

Salimov Farid Sagitovich, Head of the Department

 

LLC "LUKOIL–Western Siberia", TPC "Povkhneftegaz" in Kogalym

40, Shirokaya str., 628481, Kogalym, Russian Federation,

tel.: (34667) 6-40-51,

e-mail: farid.salimov@lukoil.com

 

Makienko Vladimir Vasilievich, Head of the Department

 

LLC "LUKOIL–Western Siberia" in Kogalym

20, Pribaltijskaya str., Kogalym, 628481, Russian Federation,

tel.: (34667) 6-10-46,

e-mail: Vladimir.Makienko@lukoil.com

 

Astafev Dmitry Anatolievich, Chief of the Center

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

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

tel.: (3452) 54-51-62,

e-mail: AstafevDA@tmn.lukoil.com

 

The article considers the possibility of increasing oil recovery factor in the fields of LLC "LUKOIL–Western Siberia" by expanding application of enhancement of oil recovery (EOR) technologies in low permeable reservoirs by means of analyzing the geological structure of the deposit and construction of reservoir temperatures maps.

 

Key words: enhanced oil recovery (EOR); oil recovery factor; formation; water-soluble sediments-formed composition ("SOT-12"); interlayer; clinoform; downhole pressure gauge; injectivity; temperature.

 

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UDC 622.276.344(18):678.7

 

ASSESSMENT OF STRUCTURAL-MECHANICAL PROPERTIES

OF THE GEL-LIKE SYSTEMS (p. 84)

 

Cherepanova Natalia Alexeevna, Head of the Department,

Kladova Anna Vitalievna, 2nd category chemical engineer

 

"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen

19/17, Tsentralnaya str., 628483, Kogalym, Russian Federation,

tel.: (34667) 6-29-62, 6-01-21,

e-mail: Cherepanova@nipi.ws.lukoil.com, KladovaAV@nipi.ws.lukoil.com

 

The methods of testing and assessing of the structural-mechanical properties of the gel- and sediment-forming systems for flow deflection technologies are considered. The application of these methods in the laboratory conditions can accurately and efficiently select the reagents for carrying out the works.

 

Key words: enhanced oil recovery; water inflow limitation; physico-chemical methods of influence; crosslinked polymeric systems; gels; rheology; vibration viscometry; oscillation method; shear strength.

 

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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY"

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