ISSN 2413-5011

Scientific-technical journal

GEOLOGY, GEOPHYSICS

AND DEVELOPMENT OF OIL AND GAS FIELDS

                                                                                                       published since 1992

November 2019                             ¹ 11(335)                       12 issues per year

 

CONTENÒS

 

OIL AND GAS PROSPECTING

 

Rile E.B., Ershov A.V., Popova M.N. Famenian oil pools of khoreyversky depression and neighboring territory sealing (Timan-Pechora oil and gas province) (p. 4‑12)

 

Kurchikov A.R., Plavnic A.G., Kurchikov D.A. Comparison of the morpho-structural parameters of the Pre-Jurassic basement and reservoir properties of the Jurassic deposits of the Urnensky and Ust-Tegussky fields (p. 13‑20)

 

Kudamanov A.I., Karih T.M., Agalakov S.E., Marinov V.A. Kheyakhinskaya pack of flasks and overlapping siliceous-clayish deposits (the Upper Cretaceous, Western Siberia). Structural specific features (p. 2130)

 

Popova P.F., Tsygankova V.A., Kruk P.N. Sedimentation conditions of the Lower Artinian oil- and gas-bearing deposits of the Western Pre-Caspian depression (p. 31‑36)

 

Sidorchuk E.A., Safarova E.A. Some specific features of the geological structure of non-structural traps of the Vuktyl autochthone of the upper Pechora depression (p. 37‑42)

 

Tereshkin V.V., Sereda I.A., Trikhonovich G.V. Prospects of the Permian deposits resource base of the north-western margin of Buzuluk depression and Zhigulevsko-Samarkinskaya system of swells in Samara region (p. 43‑50)

 

Vashurina M.V., Rusakova Yu.O., Khramtsova A.L. The study of fresh groundwater state in conditions of intensive development of the Krasnoleninskoe field (p. 51‑59)

 

GEOLOGICAL MODELING

 

Kazakova A.S. Evaluation and modeling of multi-level heterogeneities of complexly composed reservoirs. practical approaches and algorithms on the example of delta-front sandstones (p. 60‑68)

 

GEOCHEMICAL RESEARCH WORK

 

Samokhvalov N.I., Skibitskaya N.A., Kovalenko K.V. The problems of determining the content of kerogen in the oil and gas source rocks (p. 69‑74)

 

DEVELOPMENT OF OIL AND GAS FIELDS

 

Gainitdinov A.R., Nazarov V.F., Korovin V.M. Quantitative assessment of the inflow composition from the operating intervals (p. 75‑79)

 

 

Information on the articles

 

UDC 553.98          DOI: 10.30713/2413-5011-2019-11(335)-4-12

 

FAMENIAN OIL POOLS OF KHOREYVERSKY DEPRESSION AND NEIGHBORING TERRITORY
SEALING (TIMAN-PECHORA OIL AND GAS PROVINCE) (p. 4)

 

Elena Borisovna Rile, Cand. of geol.-mineral. sci.,

Aleksei Valentinovich Ershov,

Marina Nikolaevna Popova

 

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

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

e-mail: popova@ipng.ru

 

Sealing conditions and relationships between the Famenian oil pools of multilayer fields are analyzed from the three-layer reservoir theory point of view. Main genuine seals are revealed and mapped.

Genuine seal, blocking the oil pool, and the main genuine seal of the region identification is of great importance for the planning of oil and gas exploration, definition of well testing intervals, estimation of hydrocarbon reserves and resources, as well as for the selection of fields development strategy.

 

Keywords: oil; pool; field; genuine and false seals; sealing; resources.

 

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UDC 553.98(571.1)          DOI: 10.30713/2413-5011-2019-11(335)-13-20

 

COMPARISON OF THE MORPHO-STRUCTURAL PARAMETERS OF THE PRE-JURASSIC
BASEMENT AND RESERVOIR PROPERTIES OF THE JURASSIC DEPOSITS
OF THE URNENSKY AND UST-TEGUSSKY FIELDS (p. 13)

 

Arkady Romanovich Kurchikov1,2, Corresponding Member Russian Avademy of Sciences, Dr. of geol.-mineral. sci.,

Andrey Garevich Plavnic1,2, Dr. of tech. sci.,

Denis Arkadyevich Kurchikov1, Cand. of geol.-mineral. sci.

 

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

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

e-mail: niigig@tmnsc.ru

 

2Tyumen Industrial University (TIU)

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

 

Based on the data on the structural plan framework of the crystalline basement roof at the Urnensky and Ust-Tegussky deposits and using formalized mathematical methods, different-scale morphological structural elements were identified and the reservoir properties of productive deposits of the Jurassic complex within these elements were comparatively analyzed. The obtained results confirmed the influence of powerful tectonic processes that determine the structural features and filtration-capacitive properties of productive deposits of the considered deposits. It has been proved that the areas with positive values of the secondary derivatives in the direction of the gradient of the basement structural surface are characterized by lower values of the reservoirs’ permeability, and the boundary zones between morpho-structural elements are characterized by increased permeability values. For clayey deposits, the opposite pattern is observed. The results of the work indicate that the approach used to isolate the morpho-structural elements, previously used mainly for comparing the geodynamic and hydrogeochemical conditions of the deep horizons of Western Siberia can be effectively applied to solve a wider range of geological problems.

 

Keywords: geodynamic conditions; reservoir properties; the Jurassic complex; crystalline foundation; morpho-structural analysis; Urnensky field; Ust-Tegussky field.

 

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UDC 553.98(571.1)          DOI: 10.30713/2413-5011-2019-11(335)-21-30

 

KHEYAKHINSKAYA PACK OF FLASKS AND OVERLAPPING SILICEOUS-CLAYISH DEPOSITS
(THE UPPER CRETACEOUS, WESTERN SIBERIA). STRUCTURAL SPECIFIC FEATURES (p. 21)

 

Alexander Ivanovich Kudamanov, Cand. of geol.-mineral. sci.,

T.M. Karih,

S.E. Agalakov, Cand. of geol.-mineral. sci.,

V.A. Marinov, Cand. of geol.-mineral. sci.

 

LLC "Tyumen Petroleum Research Center"

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

å-mail: aikudamanov@tnnc.rosneft.ru

 

Poorly studied supra-Cenomanian deposits of the Upper Cretaceous of the Western Siberia are promising for the detection of gas industrial accumulations, which caused the intensification of the study of this part of the section in recent years. The comprehensive analysis of the regional geological-geophysical information resulted in identification of four seismic complexes in the section of the Upper Cretaceous of the Western Siberian Plate. Some packs (strata, stratons) characterized by a very different lithological composition were additionally identified in the composition of the complexes, which is caused by the sedimentation conditions peculiarities. It is shown that the formation of flasks of the NB1 straton (Heyakha pack) reflects the final stage of the evolution of the chemogenic sedimentation basin from iron-aluminum-silicon (at the base of the Berezovsky suite) to predominantly silicon (in the roof of the Lower berezovsky seismic complex). The overlying deposits of the VB2 pack (Verkhneberezovsky seismic complex), significantly enriched by aluminum, iron, etc., reflect the next stage multielement chemogenic sedimentation. The relative synchronism of clay-siliceous sedimentation (the Late Cretaceous, Senon), studied in the southeast of the Russian and within the West Siberian Plates, suggests cause-and-effect relationships between these events. The formation of breccia-like structures at the boundary of the NB1 and VB2 packs may occur due to the geochemical conditions change of the sedimentation environment and a sharp acceleration of the aging rate of the underlying organo-mineral silts (in fact, colloids), mainly of silicon (opal) composition (Kheyakhinsky pack), as a result of activation of the entry into the basin of an expanded complex of chemical elements at the initial stage of VB2 pack accumulation.

 

Keywords: Berezovsky suite; cognac; santon; flasks; colloid; sol; gel; coagulation; volcanism; pyroclastic; biogenic chemogenic sediments; transgression; regression.

 

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UDC 550.8          DOI: 10.30713/2413-5011-2019-11(335)-31-36

 

SEDIMENTATION CONDITIONS OF THE LOWER ARTINIAN OIL- AND GAS-BEARING DEPOSITS
OF THE WESTERN PRE-CASPIAN DEPRESSION (p. 31)

 

Polina Fyodorovna Popova,

Valentina Alexandrovna Tsygankova, Cand. of geol.-mineral. sci.,

Pavel Nikolayevich Kruk

 

LUKOIL–Engineering Limited VolgogradNIPImorneft Branch Office in Volgograd

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

e-mail: Polina.Popova@lukoil.com

 

The results of complex studies of the Lower Artinian deposits promising in view of hydrocarbon exploration, based on a detailed lithological-facies, seismic-facies, geochemical analysis, with account of new wells drilling within the margin zone of the Pre-Caspian depression and the adjacent territory of Kalmykia are presented in the article. The core, sludge, data of x-ray diffraction analysis and paleontological studies carried out by specialists in Volgograd and Saratov were studied, which made it possible to eliminate the existing contradictions in the subsalt deposits stratification. A brief paleogeographic essay is given, which allows to highlight the conditions of sedimentation in the Carboniferous and the Early Permian time in the area under study and with account of geochemical studies to clarify the productive deposits genesis.

 

Keywords: the Pre-Caspian depression; the South-Plodovitenskaya area; radiolarites; spongolites; bacteria; genesis of deposits; prospects.

 

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UDC 550.8.013          DOI: 10.30713/2413-5011-2019-11(335)-37-42

 

SOME SPECIFIC FEATURES OF THE GEOLOGICAL STRUCTURE OF NON-STRUCTURAL TRAPS
OF THE VUKTYL AUTOCHTHONE OF THE UPPER PECHORA DEPRESSION (p. 37)

 

Elena Alexandrovna Sidorchuk, Cand. of geol.-mineral. sci.,

Elisaveta Alexandrovna Safarova

 

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

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

e-mail: elena_sidorchuk@mail.ru, safarovaelisaveta@gmail.com

 

The article is devoted to one of the directions of hydrocarbons prospecting in the poorly explored but promising Visean terrigenous complex of the Vuktyl autochthone of the Upper Pechora depression. Some specific feature of the section is the variable deposits thickness caused by the presence of sandy lenticular bodies in the roofing part. These sandy formations are interpreted as non-structural lithologically limited and tectonically sealed ones from the east by the trap thrust.

 

Keywords: promising oil- and gas-bearing complex; the Visean stage; lithologically limited traps; tectonically sealed traps; non-structural traps.

 

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UDC 553.98(470.43)          DOI: 10.30713/2413-5011-2019-11(335)-43-50

 

PROSPECTS OF THE PERMIAN DEPOSITS RESOURCE BASE OF THE NORTH-WESTERN MARGIN
OF BUZULUK DEPRESSION AND ZHIGULEVSKO-SAMARKINSKAYA SYSTEM
OF SWELLS IN SAMARA REGION (p. 43)

 

Vladislav Vladislavovich Tereshkin,

George Valerievich Trikhonovich

 

LLC "SamaraNIPIneft"

18, Vilonovskaya str., Samara, 443010, Russian Federation,

e-mail: TereshkinVV@samnipi.rosneft.ru, TrikhonovichGV@samnipi.rosneft.ru

 

Ilya Alexandrovich Sereda

 

PJSC "NK "Rosneft"

26/1, Sofiyskaya embankment, 117997, Moscow, Russian Federation

 

The article describes the Permian oil- and gas-bearing complex, conditions of its formation, oil and gas potential as well as prospects of the resource base development associated with the Permian deposits in the north-western margin of Buzuluk depression.

 

Keywords: resource potential; the Permian deposits; oil and gas potential; margin of Buzuluk depression; reservoirs.

 

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UDC 556.3(540.4)          DOI: 10.30713/2413-5011-2019-11(335)-51-59

 

THE STUDY OF FRESH GROUNDWATER STATE IN CONDITIONS OF INTENSIVE DEVELOPMENT
OF THE KRASNOLENINSKOE FIELD (p. 51)

 

M.V. Vashurina

 

A.A. Trofimuk’s West Siberian branch of the Institute of Petroleum Geology and Geophysics SB RAS

74, Taimyrskaya str., 625026, Tyumen, Russian Federation,

e-mail: MVashurina@tmnsc.ru

 

Yu.O. Rusakova, A.L. Khramtsova

 

The Western-Siberian Institute of Geology of Oil and Gas of Tyumen industrial University

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

 

The article highlights the results of a 13-year (period of 2006–2018 years) cycle of fresh groundwater monitoring of the Atlym-Novomikhailovsky aquifer by water intakes located within the Krasnoleninsky oil and gas condensate field. The conducted analysis of the hydrodynamic state of the studied groundwaters proved the stability of the piezometric level, both in time and along the territory of the area of study. The analysis of the spatial-temporal changes of the hydraulic-chemical characteristics of the studied waters revealed the tendency of the increase of the water composition heterogeneity, the occurrence of waters with mixed cation-anion composition confined to the western and north-eastern parts of the area under study. The established change of the chemical composition of fresh groundwater requires a further study to determine the degree of the various factors influence on it both of natural (precipitation amount, geological processes in the system "water-rock") and technogenic character.

 

Keyword: fresh groundwater; resources; water intake; chemical composition; water type; cations; anions; solid residue; heterogeneity; tendency.

 

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UDC 622.276.1/.4.001.57          DOI: 10.30713/2413-5011-2019-11(335)-60-68

 

EVALUATION AND MODELING OF MULTI-LEVEL HETEROGENEITIES OF COMPLEXLY
COMPOSED RESERVOIRS. PRACTICAL APPROACHES AND ALGORITHMS
ON THE EXAMPLE OF DELTA-FRONT SANDSTONES (p. 60)

 

Anastasia Sergeevna Kazakova

 

LLC "Tyumen Petroleum Research Center"

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

 

The paper studies the influence of geological different-levels heterogeneities on fields development based on a practical example. The main goal is to develop recommendations for accounting of heterogeneity at the stages of geological exploration and 3D modeling.

The Cretaceous deposits of the Verkhnekolik-Yoganskoye field are considered as an example of a comprehensive study of heterogeneities at a poly-facial object. two sub-facies of bar deposits of the delta front are identified in the section of the BV112 formation, which differ both in the level of heterogeneities and in properties, which mainly affects the height of the transition zone and the levels of water cut at the start of the wells. The main stages of the study are the analysis of the deposits cyclicity, facies zoning of the object, quantitative assessment of heterogeneities and the identification of patterns between facies zoning and starting water cut of wells when using the accumulated experience on analogous objects and actual materials.

 

Keyword: complexly composed reservoirs; geological different-levels; delta-front sandstones; 3D modeling.

 

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UDC 550.83+550.4.07          DOI: 10.30713/2413-5011-2019-11(335)-69-74

 

THE PROBLEMS OF DETERMINING THE CONTENT OF KEROGEN
IN THE OIL AND GAS SOURCE ROCKS (p. 69)

 

Nikita Igorevich Samokhvalov,

Kazimir Viktorovich Kovalenko, Dr. of geol.-mineral. sci., Professor

 

National University of Oil and Gas "Gubkin University"

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

e-mail: hikz1@mail.ru

 

Natalia Aleksandrovna Skibitskaya, Cand. of geol.-mineral. sci., head of laboratory OGRI RAS,

 

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

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

e-mail: skibitchka@mail.ru

 

Laboratory pyrolytic studies are one of the main methods for determining the properties of oil and gas source strata. Most methods of interpretation of well logging data involve the results of these studies only and are mainly focused on the determination of the total organic carbon content. This does not solve the problem of differentiated determination of kerogen and bitumoids concentrations, while the separate determination of these components is important when analyzing the regularities of the organic matter transformation. The use of pyrolytic parameters is only possible in conjunction with bitumen, lithogenetic, physical-chemical, petrophysical, electronic microscopic studies with the comprehensive study of the interrelated patterns of rock rocks catagenetic transformations.

The complex comparison of the results of pyrolysis and bitumoids extraction is considered in the present paper. The obtained expression for kerogen concentrations determination in rock samples respectively allows to quantitatively characterize the generation potential of petroleum source sediments. In addition, the integrated approach provides for separate assessment of the organic carbon content associated with kerogen and bitumoids.

 

Keywords: petroleum source rock; pyrolytic studies; extraction of bitumoids; kerogen; high molecular bituminous components.

 

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UDC 550.832          DOI: 10.30713/2413-5011-2019-11(335)-75-79

 

QUANTITATIVE ASSESSMENT OF THE INFLOW COMPOSITION
FROM THE OPERATING INTERVALS (
ñ. 75)

 

Azamat Ramilevich Gainitdinov

 

LLC "Research and Development Center "Geostra"

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

e-mail: GainitdinovAR@bngf.ru

 

Vasily Fedorovich Nazarov, D-r of tech. sci.

 

Bashkir State University

32, Validy str., 450076, Ufa, Republic of Bashkortostan, Russian Federation;

 

Valery Mikhailovich Korovin, D-r of tech. sci.

 

JSC SPC "Geofizika"

2, Komsomolskaya str., 450077, Ufa, Republic of Bashkortostan, Russian Federation

 

This article discusses the possibility of determining the inflow composition amount from the operating intervals. The integrated domestic tools such as AGAT, SOVA, etc. with the sensors axial location do not allow a quantitative interpretation of the fluid content in the flow due to the design specific features. There exist western technologies implemented, for example, in the Sondex tool, in which, by virtue of the successful sensors design, and under certain flow conditions, it is possible to carry out a quantitative determination of the inflow composition. But, unfortunately, due to the unsatisfactory wellbore preparation for geophysical studies, the use of western tools is meaningless. Due to the sensors clogging, no matter how complex the tool is, it is impossible to conduct qualitative research with the well quantitative parameters calculation. It is almost impossible to achieve an acceptable wellbore preparation from the customer. Unsatisfactory downhole conditions make significant distortions, that’s why the interpretation results are qualitative in nature but without quantitative parameters.

The authors propose the ideology of building tools for solving all the problems that geophysicists meet, regardless of well conditions. The article presents a tool with a packer device and an axial sensors arrangement in a closed case. The surface signal simultaneously with the packer opening provides for the sensors opening to the fluid flow. Thus, the sensors clogging when running down to the interval of the detailed studies is prevented. Due to the presence of the packer, practically the entire volume of the incoming fluid passes through the device without the fluid slipping the sensors because of the flow pattern nature. The presence of two calibrated composition methods, water-cut log and densitometry makes it possible to carry out a quantitative interpretation for any values of the water content in the flow.

 

Keywords: inflow composition; inflow intervals; phase flow rate; composition methods; perforated intervals; well water-cut.

 

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