ISSN 0207-2351

Scientific-technical journal

OILFIELD ENGINEERING

                                                                                                       published since 1965

July 2019                               ¹ 7 (607)                            12 issues per year

 

CONTENÒS

 

DEVELOPMENT OF OIL AND GAS-OIL FIELDS

 

Smirnov D.S., Savchenko I.V., Dreiman V.A., Likhoded I.A., Pisarev D.Yu. Evolution of design solutions for development the edge zone of layer AV11−2 of the Samotlorskoe field (p. 5‑12)

 

Dolgikh M.Yu., Sintsov I.A., Balina O.S. Analysis of the mixed displacement efficiency by carbon dioxide gas of the upper Jurassic deposits of the Western Siberia by modeling results (p. 13‑17)

 

Pupkov N.V., Krivova N.R. Researh of the effect of water injection into a formation on the water-intake capacity of injection wells (p. 18‑22)

 

Haladov A.Sh., Dudnikov Yu.V., Yamaletdinova K.Sh., Dudaev M.M., Tasueva Y.D. The results of the development of Mesozoic deposits by waterflooding and the prospects for the development of oil production (on the example of the Grozny oil region) (p. 23‑27)

 

RESEARCH OF FORMATIONS AND WELLS

 

Nelepov M.V., Tomashev D.V., Paporotnaya A.A. Impact of the natural fractures studies on the oil fields production efficiency program for Eastern Stavropol region (p. 28‑32)

 

Chupov M.V. Description of the algorithm for automation of the technological process of wells geophysical survey (p. 33‑38)

 

Griguletsky V.G. About the possible flow-rate of an emergency well MC-252 in the gulf of Mexico (p. 39‑47)

 

Korobov I.Yu., Popov S.N. Cement types which are used during well construction and variation of physical and mechanical cement properties under experiments (p. 48‑56)

 

MATHEMATICAL MODELING

 

Masjukov V.V., Popov M.A. Aposteriori verification of "PAN" physical-mathematical model efficiency and its program implementation to assess and map residual oil reserves based on the statistical analysis of a field development (p. 57‑60)

 

TECHNIQUE AND TECHNOLOGY OF OIL PRODUCTION

 

Bakirov D.L., Burdyga V.A., Fattakhov M.M., Gritsay G.N., Antonov V.V. Determination of the optimal configuration of supporting-centering elements when developing technical means for wells drilling and completion (p. 61‑67)

 

Isaev A.A., Malykhin V.I., Sharifullin A.A. Improvement of pumps operational efficiency when lifting well products with high gas content (p. 68‑72)

 

PREVENTION OF PARAFFIN SEDIMENTATION, SALTS AND HIDRATES

 

Makeev A.A., Kokorina K.A., Elnikov A.V., Petrova Yu.Yu., Pichugina A.A. Complications that may arise when operating wells of the pre-jurassic deposits of the Krasnolenisk arch (p. 73‑77)

 

 

Information on the articles

 

UDC 622.276.1/.4:622.276.346          DOI: 10.30713/0207-2351-2019-7(607)-5-12

 

EVOLUTION OF DESIGN SOLUTIONS FOR DEVELOPMENT THE EDGE ZONE OF LAYER AV11-2
OF THE SAMOTLORSKOE FIELD (p. 5)

 

Dmitry Sergeevich Smirnov,

Inna Valerievna Savchenko,

Vladimir Anatolievich Dreiman,

Ivan Alekseevich Likhoded

 

LLC "Tyumen Petroleum Research Center"

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

e-mail: ialikhoded@tnnc.rosneft.ru

 

Denis Yurievich Pisarev

 

JSC "Samotlorneftegaz"

4, Lenin str., Nizhnevartovsk, Tyumen region, Khanty-Mansi autonomous territory − Yugra, 628606, Russian Federation

 

The work is devoted to generalization of accumulated experience in development edge zones of the AV11-2 reservoir, which makes it possible to ensure profitability of production and achieve maximum oil recovery.

The efficiency of development edge zones of the AV11-2 reservoir depends on implementation of an integrated approach at main strategic areas: analysis of the reservoir, including the distribution of geological and geophysical characteristics, substantiation of the optimal wells pattern, implementation of reservoir pressure maintenance system, drilling and completion, taking into account applicable tax incentives.

The solutions presented in the work were recognized successful, taking into account experience of foreign analogous fields. These solutions are recommended for implementation while drilling and development of edge zones of the layer AV11-2 of the Samotlorskoe field.

 

Keywords: Samotlorskoe field layer AV11-2; drilling and development of edge zone reserves; low permeability undersaturated reservoir; facial-changeable rocks; areal rock stress (regional stress); horizontal well (HW); multi-stage hydraulic fracturing (MSHF); substantiation of wells pattern; increasing the length of the horizontal sections of wells and the number of hydraulic fracturing; effectiveness of reservoir pressure maintenance system; experience of foreign analogues.

 

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UDC 622.276.6          DOI: 10.30713/0207-2351-2019-7(607)-13-17

 

ANALYSIS OF THE MIXED DISPLACEMENT EFFICIENCY BY CARBON DIOXIDE GAS
OF THE UPPER JURASSIC DEPOSITS OF THE WESTERN SIBERIA BY MODELING RESULTS (p. 13)

 

Mariya Yurievna Dolgikh,

Olga Sergeevna Balina

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

e-mail: DolgihMY@tmn.lukoil.com; BalinaOS@tmn.lukoil.com

 

Ivan Alekseevich Sintsov, Cand. of tech. sci.

 

Federal State Budget Institution of Higher Education "Tyumen Industrial University"

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

e-mail: ivan_sintsov@mail.ru

 

The use of carbon dioxide gas to enhance formations’ oil recovery is often used in the world practice, but in Russia this method hasn’t been widely used up to now. The paper assesses the effectiveness of the of carbon dioxide gas use to achieve the effect of mixing displacement for the Upper Jurassic deposits in the Western Siberia. The calculations were based on the data of the late stage of the field development with the assessment of the method effectiveness after water injection. Potential sources of the injection of carbon dioxide gas in Russia were considered. The calculations were performed on a sector hydrodynamic model in the Tempest More. The economic efficiency was analyzed and the conditions under which this method is economically viable were defined. As a result of the researches, a new method of deposits development, implying the injection of carbon dioxide gas under the oil-water contact into the transition zone with the residual oil saturation, was proposed. It will allow to obtain additional oil production and increase the economic efficiency of the project.

 

Keywords: carbon dioxide gas; oil; the Upper Jurassic deposits; hydrodynamic model; effectiveness analysis; mixing displacement; gas methods; water-oil contact.

 

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UDC 622.276.432          DOI: 10.30713/0207-2351-2019-7(607)-18-22

 

RESEARCH OF THE EFFECT OF WATER INJECTION INTO A FORMATION
ON THE WATER-INTAKE CAPACITY OF INJECTION WELLS (p. 18)

 

Nikolay Vladimirovich Pupkov1,

Nadezhda Rashitovna Krivova2,3, Cand. of tech. sci.

 

1LLC "Tyumen Petroleum Research Center"

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

 

2PJSC "Vareganneftegaz"

21, 2nd microregion, Raduzhny, 628464, Khanty-Mansi autonomous territory – Yugra, Russian Federation

 

3Federal State Budget Institution of Higher Education "Tyumen Industrial University"

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

e-mail: nrk4@yandex.ru

 

The paper analyzes the research works aimed at determination of the reasons for reduction of water-intake capacity of injection wells. The most likely cause is the low permeability of the reservoir and the hydrophilicity of the collector, leading to a decrease in mobility during the transfer of wells for injection. According to the obtained results, measures to intensify the injection have been recommended.

 

Keywords: injection well; reservoir pressure; water well; colmatage of the bottom hole zone.

 

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UDC 622.276.4          DOI: 10.30713/0207-2351-2019-7(607)-23-27

 

THE RESULTS OF THE DEVELOPMENT OF MESOZOIC DEPOSITS BY WATERFLOODING
AND THE PROSPECTS FOR THE DEVELOPMENT OF OIL PRODUCTION (ON THE EXAMPLE
OF THE GROZNY OIL REGION) (p. 23)

 

Abdulla Shirvanievich Haladov, Cand. of tech. sci.,

Magomed Makhmudovich Dudaev,

Yicita Dokuevna Tasueva, Cand. of chem. sci.

 

Federal State-Funded Educational Institution of Higher Education "Millionshchikov Grozny State Oil Technical University"

100, H.A. Isaev prosp., Grozny, 364051, Republic of Chechen, Russian Federation,

e-mail: haladov_a_sh@mail.ru

 

Yury Vladimirovich Dudnikov, Dr. of tech. sci.

 

PJSC "Ufaorgsintez"

148, Mendeleev str., Ufa, 450080, Republic of Bashkortostan, Russian Federation

 

Klara Shaikhovna Yamaletdinova, Dr. of tech. sci., Professor

 

Ufa branch of Chelyabinsk State University

17/1, Rikhard Zorge str., Ufa, 450059, Republic of Bashkortostan, Russian Federation

 

The Mesozoic deposits of Grozny oil region have been operated for a long time. They were developed under elastic and hard-water-pressure modes mainly due to reservoir pressure maintenance (RPM) by means of waterflooding.

To define more precisely the state of the water-flooded formations development of the Mesozoic deposits in the Grozny oil region, the operation of all production wells that had been in operation was analyzed: periods of flow rates decrease, of the start of water-flooding and full watering were determined. The current position of the water-oil contact (WOC) of wells by the percentage water content in the products is determined.

 

Keywords: reservoir; waterflooding; reservoir; well; oil products; injectivity; bottomhole zone; injection; treatment; acid solutions.

 

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UDC 622.276.346; 551.24          DOI: 10.30713/0207-2351-2019-7(607)-28-32

 

IMPACT OF THE NATURAL FRACTURES STUDIES ON THE OIL FIELDS PRODUCTION EFFICIENCY PROGRAM FOR EASTERN STAVROPOL REGION (p. 28)

 

M.V. Nelepov, Cand. of geol.-mineral. sci.,

D.V. Tomashev, Cand. of geol.-mineral. sci.,

A.A. Paporotnaya, Cand. of geol.-mineral. sci.

 

Ltd. "NK "Rosneft" − NTC"

54, Krasnaya str., Krasnodar, 350000, Russian Federation,

e-mail: svkoshcheev@rnntc.ru

 

On the basis of the study of geotectonic activity of the studied region, the influence of fracturing of reservoirs on the effectiveness of geological and technical measures is considered. Taking into account the obtained results, the scheme of location of zones of increased productivity of deposits of the lower Jurassic of one of the developed fields of the Eastern Stavropol region is proposed.

 

Keywords: tectonic activity; fracturing; well production; zones of increased productivity.

 

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UDC 550.832          DOI: 10.30713/0207-2351-2019-7(607)-33-38

 

DESCRIPTION OF THE ALGORITHM FOR AUTOMATION OF THE TECHNOLOGICAL PROCESS
OF WELLS GEOPHYSICAL SURVEY (p. 33)

 

Mikhail Vadimovich Chupov

 

LLC NTC "Geostra"

3, Luganskaya str., Ufa, 450071, Republic of Bashkortostan, Russian Federation,

e-mail: ChupovMV@bngf.ru

 

The conditions of the field-geophysical studies in the wells of the operating fund are considered, the methods for choosing the technology for conducting the researches are described, the difficulties and problems arising at the stages of conducting geophysical studies are indicated. The process of developing an algorithm for an automated software module embedded in the program of well-logging data registration is considered.

 

Keywords: automation; registration program; logging; algorithm; expert system.

 

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UDC 622.276.346:622.245.5         DOI: 10.30713/0207-2351-2019-7(607)-39-47

 

ABOUT THE POSSIBLE FLOW-RATE OF AN EMERGENCY WELL MC-252
IN THE GULF OF MEXICO (p. 39)

 

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

 

National University of Oil and Gas "Gubkin University"

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

e-mail: gvg-tnc@mail.ru

 

The problem of the possible flow rate of an emergency well MS-252 in the Gulf of Mexico is considered. The analysis of pressure changes in drill pipes and the descriptions of the current state of the drilling fluid flow to the floor of the drilling rig made it possible to establish (for the first time) the well flow rate during an emergency release on April 20, 2010.

It is established that about 10000 tons of oil entered the Gulf of Mexico waters daily, and during the accident from April 20 to September 19, 2010, more than 1,5 million tons of oil entered the Gulf of Mexico waters.

The paper presents a brief analysis of the well-known theoretical and experimental results obtained by I.S. Teplitsky, E.G. Leonov, V.I. Isaev and other authors to determine the flow rate of emergency blow-outs of gas, gas condensate and oil wells in the sea.

Based on the general principles of the theory of turbulent gas jets (G.N. Abramovich, I.D. Semikin, L.G. Loitsyansky, Yu.B. Rumer and others), exact and approximate formulas for calculating gas flow rate (gas condensate, oil, water) blowout of an offshore well.

 

Keywords: accident; blowout; well flow rate; weight concentration; volume concentration; pressure chart.

 

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UDC 622.245.422          DOI: 10.30713/0207-2351-2019-7(607)-48-56

 

CEMENT TYPES WHICH ARE USED DURING WELL CONSTRUCTION AND VARIATION
OF PHYSICAL AND MECHANICAL CEMENT PROPERTIES UNDER EXPERIMENTS (p. 48)

 

Ilya Yurievich Korobov

 

Schlumberger East

e-mail: ilya.so200926@gmail.com;

 

Sergey Nikolaevich Popov, Cand. of. tech. sci.

 

Oil and Gas Research Institute RAS

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

e-mail: popov@ipng.ru

 

Papers relative to preparation and investigation of slurry samples which are used in cementing job was reviewed and analyzed. It was shown an influence of various factors on physical and mechanical cement properties. It was learnt any regularities of slurry samples elastic and strength properties changes depending on wait on cement, blend composition and temperature.

 

Keywords: cement rock; set cement; elastic properties; compressive strength; wait on cement.

 

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UDC 622.276.1/.4.001.57          DOI: 10.30713/0207-2351-2019-7(607)-57-60

 

APOSTERIORI VERIFICATION OF "PAN" PHYSICAL-MATHEMATICAL MODEL EFFICIENCY
AND ITS PROGRAM IMPLEMENTATION TO ASSESS AND MAP RESIDUAL OIL RESERVES BASED
ON THE STATISTICAL ANALYSIS OF A FIELD DEVELOPMENT (p. 57)

 

V.V. Masjukov,

M.A. Popov

 

Slavneft Oil&Gas R&D Department

21à, prosp. Chaikovsky, Tver, 170002, Russian Federation,

e-mail: masvol@mail.ru

 

Quite recently the amount of residual oil reserves of some oil deposits in the Western Siberia was estimated by applying a physical-mathematical model that uses statistically stable estimates based on the production curves analysis. The results obtained were compared with the estimates got by means of the same model use 15 years ago. The high confirmation level based on a posteriori analysis indicates the robustness of the technology and the feasibility of its use in oil fields with a long history of development and a sufficiently high density of wells to optimize development in the late stages of operation. It is essential that the described technology provides not only an estimation of residual reserves, but also allows to map them along an oil deposit area. The possible improvement of this technology is discussed.

 

Keywords: residual oil reserves; physical-mathematical model of oil production; oil field development; PAN program.

 

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UDC 622.243.272          DOI: 10.30713/0207-2351-2019-7(607)-61-67

 

DETERMINATION OF THE OPTIMAL CONFIGURATION OF SUPPORTING-CENTERING ELEMENTS
WHEN DEVELOPING TECHNICAL MEANS FOR WELLS DRILLING AND COMPLETION (p. 61)

 

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

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

Marsel Masalimovich Fattakhov,

Grigoriy Nikolaevich Gritsay,

Vasiliy Vladimirovich Antonov

 

LUKOIL–Engineering Limited KogalymNIPIneft Branch Office in Tyumen

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

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

 

 

The aim of the paper is to increase the reliability and operational lifetime of drilling equipment at the expense of improving the design of the centering devices, widely used in the construction, operation and repair of wells and operating under constant or alternating static and dynamic loads. The paper presents a nontrivial approach to determination of the optimal number of centering blades in similar devices, including the use of computer simulations as well as gives recommendations on optimization of technical means constructions for wells drilling and completion.

 

Keywords: well construction; supporting-centering elements; centering; rotary controlled system.

 

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UDC 622.276.53.054.22           DOI: 10.30713/0207-2351-2019-7(607)-68-72

 

IMPROVEMENT OF PUMPS OPERATIONAL EFFICIENCY WHEN LIFTING WELL PRODUCTS
WITH HIGH GAS CONTENT (p. 68)

 

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

Vladimir Ivanovich Malykhin,

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

 

The paper provides some information on the development and implementation of a DN-OG type well sucker-rod pump in order to increase the spacing factor and improve a pump operational efficiency as well as to introduce "KOGS-1" type equipment for gas extraction from annular space. The developments can provide additional oil production and are recommended for wide introduction. By 31.12.2018, 63 "KOGS-1" units and one DN-OG pump have been introduced.

 

Keywords: set of equipment for evacuating from annular space; gas extraction; sucker rod pump.

 

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UDC 622.276.72          DOI: 10.30713/0207-2351-2019-7(607)-73-77

 

COMPLICATIONS THAT MAY ARISE WHEN OPERATING WELLS
OF THE PRE-JURASSIC DEPOSITS OF THE KRASNOLENISK ARCH (p. 73)

 

A.A. Makeev,

K.A. Kokorina,

A.V. Elnikov, Dr. of phyz.-math. sci.,

Yu.Yu. Petrova, Cand. of chem. sci.,

A.A. Pichugina

 

Surgut State University

1, Lenin str., Surgut, 628403, Khanty-Mansi autonomous territory − Yugra, Russian Federation,

e-mail: makeev_andrey2011@mail.ru; rosegoodhouse0471@gmail.com; Andreyeln@mail.ru; yyp.71@mail.ru; alina.com9@mail.ru

 

The article considers the urgent problem of inorganic salts generation in the bottom hole zone of reservoirs and in oilfield equipment (particularly, in subsurface pumping equipment) during wells operation. The process of salt formation whilst operating wells of the Pre-Jurassic deposits of the Krasnoleninsk arch, equipped with electric submersible electric-centrifugal pumps (ESECP), is described. The main field-geological characteristics of the Pre-Jurassic deposits of the Krasnoleninsk arch are listed. To evaluate the degree of salt formation risk whilst operating oil wells of the production site in question, possible inorganic salting by the saturation index (according to the J.E. Oddo and M.B. Thompson method) was calculated in respect to specific field-geological conditions) was made. The saturation index was calculated for the most frequently found (for the reservoirs in question) type of inorganic salt deposits – specifically for calcium carbonate. The results of the saturation index calculation prove high propensity of the waters of the relevant reservoirs for formation of calcium carbonate deposits. The results of the analysis of mineral deposits sample carried out with the help of the infrared spectroscopy method, proving that the analyzed sample was composed by calcium carbonate (calcite) deposits are submitted. It is revealed, that calcite crystals formation occurs at the bottom of a well, so the crystals large enough to clog up working organs of electric centrifugal pumps pass to the pump inlet. Prediction of the possible complications related to salting at the bottom-hole zone of a reservoir, on the downhole equipment, is of great importance for choosing the most effective measures for solving the problem of inorganic salt deposits formation.

 

Keywords: salt formation; dissolvability; calcium carbonate; Pre-Jurassic reservoir; partial pressure; carbon dioxide.

 

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