ISSN 2413-5011

Scientific-technical journal

GEOLOGY, GEOPHYSICS

AND DEVELOPMENT OF OIL AND GAS FIELDS

                                                                                                       published since 1992

April 2018                                              ¹ 4                                 12 issues per year

 

CONTENÒS

 

OIL AND GAS PROSPECTING

 

Borodkin V.N., Kurchikov A.R., Nedosekin A.S., Lukashov A.V., Smirnov O.A., Firstaeva E.N., Davydov A.V. Evaluation of oil and gas potential prospects of the Leningrad license site in the Karsky sea based on 3D-MOGT seismic survey (p. 4‑19)

 

GEOLOGICAL MODELING

 

Kornikov R.O., Vilesov A.P., Akhtyamova I.R., Sobolev V.I., Eliseev A.N. Development of geological 3D seismic litho-facial model of single pinnacle-type reefs (p. 20‑27)

 

DEVELOPMENT OF OIL AND GAS FIELDS

 

Khisamutdinov N.I., Gilmanova R.Kh., Makhmutov A.A., Toropchin Î.P., Tupitsin A.M., Yankin A.B. Some methods of viscous oil recovery from carbonate collectors (p. 28‑31)

 

Fedotov I.B., Kashnikov O.Yu., Kibalenko I.A., Shevchenko O.N. A method of analytic prediction of horizontal wells flow-rates of hydrocarbon fields located in low-permeable formations-collectors on the example of  V.N. Vinogradov field (p. 32‑39)

 

Bakirov I.I., Mukhliev I.R., Sagidullin L.R., Astakhova A.N., Shchekaturova I.Sh. Involvement of earlier non-drained-efficient thicknesses in development by perforation methods application to quickly increase the current levels of oil production (p. 40‑45)

 

Vasilyev V.V., Ivantsov N.N., Lapin K.G., Volgin E.R., Toropov K.V. The search for new solutions for Russkoe field development optimization (p. 46‑52)

 

Stenkin A.V., Kotenev Yu.A., Sultanov Sh.Kh., Mukhametshin V.V., Nikiforov V.V. Raise of the efficiency of the Jurassic deposits’ oil reserves extraction in Shaim region (p. 53‑57)

 

Khisamutdinov N.I., Shchekaturova I.Sh., Khabibrakhmanov A.G., Mukhliev I.R., Sagidullin L.R. Reorientation of the intensity of oil reserves extraction by additional cracks formation (p. 58‑65)

 

Shestakov D.A., Nasybullin I.R., Kotenev Yu.A., Chudinova D.Yu., Sultanov Sh.Kh., Mukhametshin V.V. Conditions of effective application of physical-chemical methods of oil recovery enhancement in the heterogeneous formations of Kogalym region (p. 66‑72)

 

Gasumov R.A. Complex technology of weakly-cemented rocks stabilization in water-flooded gas wells (p. 73‑76)

 

●  ●  ●

 

Lachkov A.G. Publishing activities of JSC "VNIIOENG" – 50 years (p. 77‑79)

 

 

Information on the articles

 

UDC 553.98(571.1)          DOI: 10.30713/2413-5011-2018-4-4-19

 

EVALUATION OF OIL AND GAS POTENTIAL PROSPECTS
OF THE LENINGRAD LICENSE SITE IN THE KARSKY SEA
BASED ON 3D-MOGT SEISMIC SURVEY (p. 4)

 

V.N. Borodkin1, 2, A.R. Kurchikov1, A.S. Nedosekin3, A.V. Lukashov3, O.A. Smirnov3,
E.N. Firstaeva3, A.V. Davydov4

 

1 A. Trofimuk Institute of Oil and Gas Geology and Geophysics, the West-Siberian branch, the Russian Academy of Sciences

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

e-mail: niigig@tmnsc.ru

 

2 "Tyumen Industrial University" (TIU)

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

 

3 LLC "INGEOSERVIS"

 

4 LLC "Gazprom geologorazvedka"

 

The article presents brief tectonic characteristic and oil-geological of the territory under study. The seismic-geological model of the basic oil- and gas-bearing complexes with identification of promising areas for hydrocarbons deposits exploration, the optimal volume of drilling exploration is planned.

 

Keywords: the Kara Sea water area; oil- and gas-bearing complexes; seismic-geological model; reflecting complex; promising object; project well.

 

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UDC 550.8.072          DOI: 10.30713/2413-5011-2018-4-20-27

 

DEVELOPMENT OF GEOLOGICAL 3D SEISMIC LITHO-FACIAL MODEL
OF SINGLE PINNACLE-TYPE REEFS  (p. 20)

 

R.O. Kornikov,

A.P. Vilesov, Cand. of geol.-mineral. sci.,

I.R. Akhtyamova

 

LLC "Tyumen Oil Research Center"

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

e-mail: rokornikov@rosneft.ru

 

V.I. Sobolev, A.N. Eliseev

 

PJSC "Orenburgneft"

2, Magistralnaya str., Buzuluk, 461040, Orenburg region, Russian Federation,

e-mail: orenburgneft@rosneft.ru

 

The article presents a step-by-step algorithm of a model development, which includes the stage of data preparation for the 3D model such as conceptual modeling of the reef structure, facies identification, reef growth cycles on the core; well correlation associated with the growth of cycles on the core and logging materials; petrophysical modeling with the lithotypes identification; seismic-facies modeling with correlations of the core facies and seismic facies. The article also considers the stage of 3D modeling: creating of a 3D grid; facies cube, taking into account the conceptual structure, seismic-facies data and transitions between the facies; modeling lithology with a cube of facies; building of a lithotypes cube based on a lithology cube and a petrophysical model; modeling of a reservoir characteristics and estimation of reserves.

 

Keywords: 3D model of a reef; sedimentology of a reef; seismic litho-facies model of a reef.

 

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UDC 622.276.1/.4:552.54          DOI: 10.30713/2413-5011-2018-4-28-31

 

SOME METHODS OF VISCOUS OIL RECOVERY
FROM CARBONATE COLLECTORS (p. 28)

 

N.I. Khisamutdinov, R.Kh. Gilmanova, A.A. Makhmutov

 

LLC NPO "Neftegaztekhnologia"

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

å-mail: srgngt@mail.ru, gilmanova_rh@npongt.ru, makhmutov_aa@npongt.ru

 

Î.P. Toropchin, A.M. Tupitsin, A.B. Yankin

 

LLC "BaiTex"

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

å-mail: otoropchin@rus.mol.hu, atupitsin@rus.mol.hu, ArYankin@rus.mol.hu

 

The article considers some methods of viscous oil extraction from a formation by obtaining in formation conditions of CO2 and carbonized water by injection of a hydrochloric acid solution. Various stages of the interaction of hydrochloric acid with the rock followed by the formation of a coarse-dispersed CO2 mixture with the reservoir fluids in the first zone, of a finely-dispersed CO2 mixture in the second zone and in the third phase it contributes to the formation of a homogeneous liquid phase with CO2, which in the form of separate rims is replaced by the aqueous phase injection into the rim with the adjustable injection rate, flow rate and pressure. It is shown that viscous oil displacement by the carbonized water increases oil displacement due to the decrease of oil viscosity from saturation and CO2 dissolution in the oil phase and the increase of the aqueous phase density. The effectiveness of this technology of oil displacement by carbonized water is estimated by an increase in the oil withdrawal by 1 ton by means of carbonized water injection by additional withdrawal of 3,0…4,5 m3 of oil.

 

Keywords: carbonate reservoirs; viscous oil; oil displacement; oil phase.

 

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UDC 622.276          DOI: 10.30713/2413-5011-2018-4-32-39

 

A METHOD OF ANALYTIC PREDICTION
OF HORIZONTAL WELLS FLOW-RATES OF HYDROCARBON FIELDS
LOCATED IN LOW-PERMEABLE FORMATIONS-COLLECTORS
ON THE EXAMPLE OF V.N. VINOGRADOV FIELD (p. 32)

 

Igor Borisovich Fedotov, Cand. of tech. sci.,

Oleg Yurievich Kashnikov, Cand. of tech. sci.,

Irina Anatolievna Kibalenko, Cand. of tech. sci.,

Oksana Nikolaevna Shevchenko

 

"VolgogradNIPImorneft", a branch of LLC "LUKOIL–Engineering" in Volgograd

96, Lenin prosp., Volgograd, 400078, Russian Federation,

e-mail: ifedotov@lukoilvmn.ru, okashnikov@lukoilvmn.ru, ikibalenko@lukoilvmn.ru, OShevchenko@lukoilvmn.ru

 

Drilling of horizontal wells has become widely used recently due to a significant increase of the fluid extraction at lower pressures. One of the urgent problems is a long term qualitative assessment of production prediction indicators. Most of the proposed formulas that are applied to calculate horizontal wells flow-rates are based on the filtration linear law both to determine the initial flow-rate and the dynamics of the flow-rate fall over time. It is known that the filtration linear law is applicable in a definite range of speeds, while in case of the violation of the filtration linear law these calculations demonstrate large errors, both for determining the initial and the dynamic flow-rate. That’s why, the possible use of the nonlinear filtration law in calculation when determining horizontal wells flow-rates that are drilled in the field with a low-permeable collector was considered. The work proposes an analytical method to be applied for calculation of the predicted flow-rates of horizontal wells drilled in low permeable field (0,3…0,8 mD) with a multi-stage hydraulic fracturing of a formation (hereafter HFF). The regular pattern to determine a crack life-time period after conducting of HFF is derived to compile a detailed prediction of the dynamics of horizontal wells production decrease. To test this method, the initial production and the dynamics of horizontal wells flow-rates decline, that are located in V.N. Vinogradov field, were calculated. A simplified analytical model of the environment geomechanics, where filtering occurs, is presented a regular pattern is derived to determine the time of cracks closure that occurred after a multi-stage hydraulic fracturing of a formation in conditions of a deposit depletion is presented. The projected dynamics of the fluid production fall from a horizontal well during the porous medium deformation in conditions of pressure change is obtained.

 

Keywords: low-permeable reservoir; hard-to-recover reserves; directional inclined wells; horizontal wells; hydraulic fracturing of a formation; non-linear filtering.

 

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UDC 622.276.6:622.245.142          DOI: 10.30713/2413-5011-2018-4-40-45

 

INVOLVEMENT OF EARLIER NON-DRAINED-EFFICIENT THICKNESSES
IN DEVELOPMENT BY PERFORATION METHODS APPLICATION
TO QUICKLY INCREASE THE CURRENT LEVELS
OF OIL PRODUCTION (p. 40)

 

I.I. Bakirov

 

IC, PJSC "Tatneft" named after V.D. Shashin

43, R. Fakhretdin str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation,

e-mail: 3ajsbi@mail.ru

 

I.R. Mukhliev, L.R. Sagidullin

 

"Jalilneft" Oil and Gas Production Department, PJSC "Tatneft" named after V.D. Shashin

2, Lenin str., Jalil-city, 423400, Republic of Tatarstan, Russian Federation,

e-mail: dn_ro@tatneft.ru

 

A.N. Astakhova, I.Sh. Shchekaturova

 

LLC NPO "Neftegaztekhnologia"

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

å-mail: srgngt@mail.ru, shchekaturova_ish@npongt.ru

 

The article presents a methodology of wells selection to be subjected to perforation woks in order to increase the current levels of oil production and to optimize the pressure maintenance system. Herewith, it is assumed that opening of interlayers that differ in permeability will increase the unevenness of the reserves extraction along the thickness. That’s why, in the coming years, the implementation of measures should be amended with account of the current change of the area development dynamics and the characteristics of each well on the date of their implementation.

 

Keywords: perforation; shooting; additional perforation; oil-saturated thicknesses; reserves; flow rate; coverage.

 

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UDC 622.276.1/.4:519.863          DOI: 10.30713/2413-5011-2018-4-46-52

 

THE SEARCH FOR NEW SOLUTIONS
FOR RUSSKOE FIELD DEVELOPMENT OPTIMIZATION (p. 46)

 

V.V. Vasilyev, N.N. Ivantsov, K.G. Lapin

 

LLC "Tyumen Petroleum Research Center"

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

e-mail: nnivantsov@rosneft.ru

 

E.R. Volgin, K.V. Toropov

 

PJSC "NK "Rosneft"

26/1, Sophijskaya naberezhnaya, Moscow, 115035, Russian Federation

 

The article describes the most promising ways of increasing areal and vertical sweep efficiency by means of wells of complex design, methods of enhanced oil recovery, and well operational modes, which consider the specifics of high-viscosity oil filtration in an unconsolidated reservoir. The negative geomechanics exacerbated by a formation heterogeneity and viscous instability of a displacement front bring essential decrease of the sweep efficiency (Kcov.) and oil recovery coefficient when developing Russkoe field. To prevent the processes, it is recommended to use optimal operational modes of producing and injection wells considering various reservoir characteristics and the level of well water cut, the optimal levels of compensation by injection at different stages of development as well as to use efficient well completion systems.

 

Keywords: Russkoe field; high-viscous oil; stimulation methods; multilateral wells; inflow control devices; geomechanics.

 

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UDC 622.276          DOI: 10.30713/2413-5011-2018-4-53-57

 

RAISE OF THE EFFICIENCY OF THE JURASSIC DEPOSITS’ OIL RESERVES
EXTRACTION IN SHAIM REGION (p. 53)

 

Andrey Veniaminovich Stenkin

 

LLC "LUKOIL–the Western Siberia"

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

 

Yury Alexeevich Kotenev, Dr. of tech. sci.,

Shamil Khanifovich Sultanov, Dr. of tech. sci.,

Vyacheslav Vyacheslavovich Mukhametshin, Cand. of tech. sci.,

Vitaliy Viktorovich Nikiforov

 

Ufa State Petroleum Technological University

1, Kosmonavtov str., Ufa, 450062, Republic of Bashkortostan, Russian Federation,

e-mail: vv@of.ugntu.ru

 

The article deals with the main problems affecting the oil reserves extraction of the Tyumensky and Sherkalinsky suits of Shaimsky oil- and gas-bearing region (OGBR). The deposits of this region are complicated ones, characterized by a wide range of changes of a formation’s geological-geophysical parameters, uneven distribution of effective thicknesses and residual reserves. The influence of disjunctive tectonics that divides a field into a network of blocks, on the of reserves extraction is also accounted for. To reveal the hydrodynamic relationship between producing and injection wells, an analysis of the tracer studies was carried out. The obtained dependences indicate that the best hydrodynamic relation is provided along the faults lines or close to them. This is caused by the fact that due to tectonic shifting the rocks are exposed to increased pressures and temperatures, being, in its turn, is the result of the decompression zones formation with increased permeability. In the central blocks of the field, confined to the dome part, large effective thicknesses with reservoir higher characteristics are allocated, what, in its turn, does not allow low-amplitude faults to violate the hydrodynamic interconnection.

 

Keywords: Tyumensky suite; Sherkalinsky suite; fault; reservoir characteristics; recoverable oil reserves; disjunctive tectonics; tracer analysis.

 

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UDC 622.276.66          DOI: 10.30713/2413-5011-2018-4-58-65

 

REORIENTATION OF THE INTENSITY OF OIL RESERVES EXTRACTION
BY ADDITIONAL CRACKS FORMATION (p. 58)

 

N.I. Khisamutdinov, I.Sh. Shchekaturova

 

LLC NPO "Neftegaztekhnologia"

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

å-mail: srgngt@mail.ru, shchekaturova_ish@npongt.ru

 

A.G. Khabibrakhmanov

 

"Elkhovneft" Oil and Gas Production Department, PJSC "Tatneft" named after V.D. Shashin

33, Tukay str., Almetyevsk, 423400, Republic of Tatarstan, Russian Federation,

e-mail: elhov_peo@tatneft.ru

 

I.R. Mukhliev, L.R. Sagidullin

 

"Jalilneft" Oil and Gas Production Department, PJSC "Tatneft" named after V.D. Shashin

2, Lenin str., Jalil-city, 423400, Republic of Tatarstan, Russian Federation,

e-mail: dn_ro@tatneft.ru

 

The article provides an assessment of the effect of oil extraction intensity reorientation by formation of additional artificial cracks along the sector of the D1 formation of Alkeevskaya area, performed by splitting of the site into fracture blocks, followed by studying the technological specific features of oil recovery. The direction of wells watering acceleration and selections as a result of a formation hydraulic fracturing in the weakly-drained reserves zones is identified by formation of increased fracturing and its numerical characteristic. According to wells operation data and specific features of a formation geotechnical characteristics changes, a complex parameter characterizing the development system activity and its effectiveness with further subdivision of the investigated object into seven groups of the withdrawal intensity is obtained. Methods of points selection to create artificial cracks with the purpose of intensification of extraction of previously weakly-drained oil reserves are presented.

 

Keywords: crack; hydraulic fracturing of a formation; reserves; extraction rate; reorientation; intensity; activity.

 

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UDC 622.276          DOI: 10.30713/2413-5011-2018-4-66-72

 

CONDITIONS OF EFFECTIVE APPLICATION
OF PHYSICAL-CHEMICAL METHODS OF OIL RECOVERY ENHANCEMENT
IN THE HETEROGENEOUS FORMATIONS OF KOGALYM REGION (p. 66)

 

Dmitry Alexandrovich Shestakov,

Ilshat Rafisovich Nasybullin

 

"Kogalymneftegaz" Territorial Production Company (TPC) of LLC "LUKOIL–the Western Siberia"

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

 

Yury Alekseevich Kotenev, Dr. of tech. sci.,

Darya Yurievna Chudinova,

Shamil Khanifovich Sultanov, Dr. of tech. sci.,

Vyacheslav Vyacheslavovich Mukhametshin, Cand. of tech. sci.

 

Ufa State Petroleum Technological University

1, Kosmonavtov str., Ufa, 450062, Republic of Bashkortostan, Russian Federation,

e-mail: vv@of.ugntu.ru

 

The article analyzes the definition of conditions that provide effective application of the diverter technologies in injection wells on the example of heterogeneous formations of oil fields in Kogalym region. The technological efficiency of gel-forming compositions introduction through injection wells was assessed by results of calculation of oil additional amount produced from reacting production wells by various characteristics of replacement. Based on this fact, the sites with low and high technological efficiency are allocated. The following stage of the work is revealing of the reasons of oil production variability in sites. According to the results of the study, such reasons are some specific feature of a formation sedimentation as a result of various facial situations of sedimentation and, correspondingly, the rocks lithotypes, heterogeneity of reservoirs characteristics and complexity of the object geological structure. The article additionally presents one of the possible indirect methods of hydrodynamic interrelation assessment according to field data. Accounting of a formation total parameters with detailed studying of its structure and operation data allowed to define the conditions of physical-chemical methods effective application for a formation under study.

 

Keywords: well; formation; diverter technologies; gel-forming composition; oil production; technological effect; characteristics of replacement; facies.

 

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UDC 622.279.23/.4(470.63)          DOI: 10.30713/2413-5011-2018-4-73-76

 

COMPLEX TECHNOLOGY OF WEAKLY-CEMENTED ROCKS STABILIZATION
IN WATER-FLOODED GAS WELLS (p. 73)

 

Ramiz Alievich Gasumov, Dr. of tech. sci.

 

JSC "SevKavNIPIgaz"

419, Lenin str., Stavropol, 355035, Russian Federation,

e-mail: Priemnaya@scnipigaz.ru

 

The article describes the reasons for a formation-reservoir destruction and conditions of sand production in gas wells. Physical-chemical methods that are applied to prevent sand production in wells and to keep withdrawal of a formation sand are considered. Some specific features of weakly-cemented rocks stabilization of a formation water-flooded bottom-hole zone (FBZ), the results of the study of the dust particles’ penetration capacity through the cemented permeable sand barrier, etc. are given. The technologies applied to stabilize the water-flooded zone at a productive formation by chemical means and restoration of FBZ zone are described. The technology of the inflow stimulation and creation of a differential pressure draw-down when redeveloping a well after its shutdown for repair is given.

 

Keywords: well; formation; bottom-hole formation zone; weakly-cemented rocks; stabilization; sand production; water-flooding; formation water; filtration mode; clay-sand bridges.

 

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UDC 622.276:002

 

PUBLISHING ACTIVITIES OF JSC "VNIIOENG" – 50 YEARS (p. 77)

 

Alexander Grigorievich Lachkov, General Director

 

JSC "VNIIOENG"

14, bld. 2, Nametkin str., Moscow, 117420, Russian Federation,

e-mail: vniioeng@mcn.ru

 

The article presents information about the publishing activity of JSC "VNIIOENG" – one of the oldest research institutes of the oil and gas industry. For many years the Institute has been engaged in publishing activities, produces seven scientific and technical journals. The possibility of creating a joint information platform with Gubkin Russian state University of oil and gas (NIU) on the basis of VNIIOENG magazines and expanding cooperation with other organizations is considered.

 

Keywords: scientific and technical journals; the List of HAC; database Russian Science Citation Index and Chemical Abstracts; Digital Object Identifier (DOI); Gubkin Russian State University of Oil and Gas (National Research University); oil and gas companies.

 

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