ISSN 2413-5011 Scientific-technical journal AND DEVELOPMENT OF OIL AND GAS FIELDS published since 1992 November 2017 ¹ 11 12 issues per year
CONTENÒS |
|
OIL AND GAS PROSPECTING |
|
|
|
|
|
|
Gubin S.A., Chizhov D.B., Kozhevnikov I.A. Siderite influence on reservoir rocks characteristics (p. 31‑36) |
|
|
GEOCHEMICAL RESEARCH WORK |
|
|
GEOPHYSICAL RESEARCH WORK |
|
|
DEVELOPMENT OF OIL AND GAS FIELDS |
|
|
|
|
Information on the articles (p. 76‑83) |
|
Information on the articles |
|
NON-CONVENTIONAL METHODS
OF SPECIFICATION
Osipova M.V.
LLC "Tyumen Petroleum Research Center" 42, Maxim Gorky str., Tyumen, 625048, Russian Federation
The article considers one of the largest fields of Nepsk-Botuobinsk anteclise, located in its eastern area – Srednebotuobinsk. The field is characterized by a lot of geological specific features. An alternative method of building of a water-oil contact trend, that allows to explain the oil rim absence in the southern part of the field, is proposed. The obtained correlation dependences of the water-oil contact alternative trend and the marks of Botuobinsky horizon roof make it possible to correct the initial structural surface, thus remarkably increasing its accuracy.
Keywords: Nepsk-Botuobinsk anteclise; Botuobinsky horizon; water-oil contact; structural surface.
|
|
THE NATURAL RESERVOIRS
OF KHOREIVER DEPRESSION CENTRAL PART
Rile Elena Borisovna, Popova Marina Nikolaevna
Oil and Gas Research Institute Russian Academy of Sciences (OGRI RAS) 3, Gubkin str., Moscow, 119333, Russian Federation, tel.: (499) 135-72-56, fax: (499) 135-54-65, e-mail: Rile@ipng.ru
The most perspective alternative sources of hardly recoverable hydrocarbons are revealed according to the three-layer natural reservoirs concept. These are the layers of extremely and very low permeable reservoirs, underlying the genuine seals, – false seals of thick carbonate natural reservoirs, containing reefs.
Keywords: natural reservoir; genuine seal; false seal; reservoir; hydrocarbons hardly recoverable alternative sources.
|
|
OIL AND GAS POTENTIAL
PROSPECTS OF THE DOMANICOID DEPOSITS
Kozlova Inna Anatolievna
Perm National Research Polytechnic University 29, Komsomolsky prosp., Perm, 614090, Russian Federation, tel.: (342) 219-83-67, e-mail: ikozlova@pstu.ru
Chetina Marina Anatolievna
JSC "KamNIIKIGS" 15, Krasnoflotskaya str., Perm, 614000, Russian Federation, e-mail: chetina_marina@mail.ru
Merson Mikhail Eduardovich
Company Isotop, Israel
The object of the study are high-bituminous strata in the stratigraphic range from the Domanic horizon of the Middle Francian substage to the Famennian stage of the Upper Devonian in the Republic of Bashkortostan. These deposits prospects were studied by geological-geophysical and geochemical characteristics, determined by the core data and wells’ sections logs. The study resulted in identifying the specific features of the parameters distribution in the stratum and in the area of their spreading, the methodology of sites multiparameter ranking by the degree of geological exploration prospects was substantiated, complex maps prospective sites in order to allocate the high-priority sites for licensing were built.
Keywords: domanicoid stratum; bituminous interlayers; Aktanysh-Chishminskaya depression; facies zones; logging; chemical-bituminological research; wells; meso-katagenesis; generation potential; ranging; oil and gas potential prospects; geological exploration.
|
|
STUDY OF SURFACE
PROPERTIES OF VISEAN TERRIGENOUS DEPOSITS
Melekhin Sergey Viktorovich, Chizhov Denis Borisovich, Fayruzova Yulia Vladimirovna, Kozhevnikov Ilya Alexandrovich
"PermNIPIneft", a branch of LLC "LUKOIL–Engineering" in Perm 29, Sovetskaya armiya str., Perm, 614066, Russian Federation, tel.: (342) 717-01-25, e-mail: Ilya.Kozhevnikov@pnn.lukoil.com
The Visean oil and gas complex is one of the key ones in Perm region. The terrigenous deposits of the complex spread almost everywhere. 47,3 % of the initial total oil resources as well as 50 % of oil production are associated with the Visean terrigenous stratum. The oil production is affected by numerous geological factors, one of which is wettability. Wettability of productive rocks depends on rocks mineral composition, pore space structure, physical and chemical properties of oil and formation water. The article considers the conditions of sedimentation and lithological structure of productive deposits of the Visean terrigenous stratum in Perm region. The variety of sedimentation processes together with secondary processes led to a wide range of the Visean terrigenous strata wettability – from a hydrophobic to a hydrophilic one. During the works, a wettability parameter for 390 samples of the Visean terrigenous stratum was determined and design documents of 19 deposits of Perm region were analyzed. The interrelation between initial oil saturation coefficient and wettability parameter is reveal. The fact is that the higher is the wettability parameter the less is the initial oil saturation. This relationship between the wettability parameter and initial oil saturation is limited by the reservoir characteristics.
Keywords: wettability; surface properties; industry standard; selective wettability; Visean terrigenous stratum; coefficient of initial oil saturation.
|
|
ESTIMATION OF TOTAL
ORGANIC MATTER
Gabnasyrov A.V., Bezukladnikov A.N.
"PermNIPIneft", a branch of LLC "LUKOIL–Engineering" in Perm 29, Sovetskaya armiya str., Perm, 614066, Russian Federation, tel.: (342) 233-64-26, e-mail: A.Gabnasirov@rambler.ru
The Domanic formation is the main oil and gas source rock of the Volga-Ural and Timano-Pechora oil and gas provinces. One of the main specific features of D3dm formation is its abnormally high enrichment by organic matter (up to 30 % according to RockEval data). Due to the limited number of core special studies, the data on the organic matter distribution over the area and the section are of a local (point-like) character and do not allow the construction of sufficiently detailed maps to localize promising zones. Thus, the authors faced the problem to find the ways of this problem salvation applying GIS methods. During the work, the existing and widely used Passi and Eisler techniques were considered. But they gave unsatisfactory results. So, TOC = f(ΔT) empirical dependence was constructed, which proved sufficient reliability when used in wells not covered by core research.
Keywords: Domanic formation; core research; oil and gas source rocks; organic matter.
|
|
UDC 553.982.2+622.276.43+549.742.114
SIDERITE INFLUENCE ON RESERVOIR ROCKS CHARACTERISTICS (p. 31)
Gubin Sergey Alexeevich, Chizhov Denis Borisovich, Kozhevnikov Ilya Alexandrovich
"PermNIPIneft", a branch of LLC "LUKOIL–Engineering" in Perm 29, Sovetskaya armiya str., Perm, 614066, Russian Federation, tel.: (342) 233-67-08, e-mail: sergeigubin@gmail.com, Denis.Chizhov@pnn.lukoil.com, Ilya.Kozhevnikov@pnn.lukoil.com
Reservoir characteristics are the main petrophysical indicators of the rocks ability to hydrocarbon fluids accumulation and migration. However, these characteristics are not constants and can be changed both under the influence of natural geological factors and a technogenic impact. Deposits material composition is considered by researchers as a factor of the structural-morphological changes in reservoir-rocks voids. It is based on the understanding that the rock bed is in a state of a physical-chemical equilibrium, which is caused by the balance between the mineral composition, liquid phase, temperature, pressure, hydrogen index and the oxidation-restoration potential of the environment. The article presents the results of laboratory studies of siderite effect on rocks reservoir characteristics. The iron carbonate presence is fixed in the Bobrikovian deposits, developed at the fields of Perm region. This fact is associated with the problem of injection wells operation. Reservoirs permeability decrease during surface water injection as a displacing agent is observed in some of them. This effect is also observed when performing filtration tests in laboratory conditions.
Keywords: reservoir characteristics; permeability decrease; colmatation; mineral composition; field development; displacing agent; siderite.
|
|
MACRO-COMPONENTS CONTENT
IN GROUNDWATERS
Kurchikov A.R., Plavnik A.G., Itskovich M.V.
A. Trofimuk Institute of Petroleum Geology and Geophysics, West-Siberian branch (WSB IPGG SB RAS) 56, Volodarsky str., Tyumen, 625000, Russian Federation, tel.: (345) 246-58-27, tel./fax: (345) 246-56-02, e-mail: niigig@tmnsc.ru
Spatial regularities of the changes in the main macro-components content and the general mineralization of the Apt-Alb-Cenomanian underground waters, the Neocomian and Jurassic aquifer complexes of the areas of the central part of the West Siberian basin adjacent to Koltogorsk-Tolkino suture zone have been mapped. The absence of regular relationship between the changes in the groundwaters macro-component composition and the tectonic conditions of the initial period of the basin development is identified. Absence of an explicit separation of the groundwaters chemical form by Koltogorsko-Urengoy graben-rift zone, revealed earlier on the basis of a statistical comparison of hydrogeochemical data, is confirmed.
Keywords: mineralization; water-soluble components; water-bearing complexes; the Mesozoic-Cenozoic deposits; tectonic processes; Koltogorsko-Urengoy graben-rift.
|
|
MODERN GEOCHEMICAL
TECHNOLOGIES TO IDENTIFY
Bachurin Boris Alexandrovich
Mining Institute of the Perm Federal Research Center (PFRC), a Ural branch of the Russian Academy of Sciences 78a, Sibirskaya str., Perm, 614007, Russian Federation, e-mail: bba@mi-perm.ru
Kostarev Sergey Mikhailovich
"PermNIPIneft", a branch of LLC "LUKOIL–Engineering" in Perm 29, Sovetskaya armiya str., Perm, 614066, Russian Federation, e-mail: Sergej.Kostarev@pnn.lukoil.com
Some methodical approaches to identification of the subaerial hydrosphere oil pollution sources at the oil fields of Perm-Kama region are considered. It is revealed that the methods of spectral-chromatographic profiling of oils composition and aqua-bitumens allow identification of not only the sources but also the time of subaerial hydrosphere oil pollution. The informative nature of the surface gas-geochemical probing by "ECOPROBE-5" express gas analyzer when mapping oil pollution zones and identifying defective wells that are characterized by activation of formation fluids’ vertical cross-flows is proved.
Keywords: oil field; subaerial hydrosphere; oil pollution; aqua-bitumens; fingerprinting; geochemical markers; gas survey.
|
|
UDC 550.832:622.276.1/.4(571.1)
LOW-RESISTANCE COLLECTORS
OF VASYUGAN SUITE: THE PROBLEMS
Terentjev V.Yu., Kalugin A.A.
LLC "LUKOIL–Engineering" 3, bld. 1, Pokrovskiy boulevard, Moscow, 127055, Russian Federation, tel.: (495) 983-24-11, å-mail: LUKOIL-Engin@lukoil.com
Dyakonova T.F., Komova A.D., Bata L.K.
JSC "Central Geophysical Expedition" (CGE)
The article outlines the problems that arise when developing low-ohmic collectors of Vasyugan suite of the Upper Jurassic deposits of the Latitude Ob River Region. Some specific feature of Vasyugan suite is the receipt of oil inflows along the whole interval of YuV1 formation, including the low-resistivity part. Vasyugan suite development and oil production analysis proved a practical absence and a very low increase of the product water-flooding in case of the roof perforation and often the lack of crossing between the high resistance (productive) and low resistance (predicted water-bearing) parts of the formation. Perforation of additional intervals of the lower part of the predicted water-bearing reservoir and production of anhydrous oil inflows from it promoted the need to study such types of sections and, firstly, to search for the causes of a formation water resistivity decrease in the productive reservoir towards its bottom as well as to obtain the criteria for detecting low-resistance sections without their testing.
Keywords: Vasyugan suite; productive reservoir; geophysical research; coefficient of permeability; core; granulometry.
|
|
THE INFLUENCE OF A
FORMATION GEO-MECHANICAL PROPERTIES
Gasumov Ramiz Alievich, Nelepov Sergey Viktorovich
JSC "SevKavNIPIgaz" 419, Lenin str., Stavropol, 355035, Russian Federation, e-mail: Priemnaya@scnipigaz.ru, NelepovSV@scnipigaz.ru
Nelepov Mikhail Viktorovich
LLC "NK Rosneft–NTC" 54, Krasnaya str., Krasnodar, 350000, Russian Federation, e-mail: mvnelepov@rn-ntc.ru
Kopchenkov Vyacheslav Grigorievich, Beketov Sergey Borisovich, Petrenko Vasyly Ivanovich, Fedorenko Vladimir Vasilievich
North-Caucasian Federal University, Institute of Oil and Gas 27, bld. 14, Industrialnaya str., Stavropol, 355029, Russian Federation
Dudaev Saipi Amiranovich
LLC "SevKavneftegazgeofizika – New Technologies" 44zh, Dovatortsev str., Stavropol, 355037, Russian Federation, e-mail: skgeofiznt@mail.ru
To account for the geo-mechanical properties of rocks when planning geological-technical measures in small hydrocarbon fields, the possibilities of remote geological mapping methods used in modern geomorphology are considered. An important role is played to low-amplitude faults identification, that, as a rule, are not subjected to mapping with modern structural constructions. Identification by means of aerial and satellite images of secondary fracturing zones, corresponding to the low-amplitude and latent faults, allows better forecasting both the areas for new wells construction and the areas for conducting geological-technical measures. Examples of the rocks geo-mechanical properties influence in the selected lineaments zones of some fields in Stavropol Territory are given and discussed. Drilling of a horizontal sidetracked well and carrying out such a highly effective method as a formation hydraulic fracturing are presented as examples of the secondary fracturing effect on a field development. The use of the remote geological mapping methods allows to significantly reduce the data obtaining cost of the geo-mechanical characteristics of the area under development, being especially relevant when developing small hydrocarbon fields.
Keywords: geo-mechanical characteristic; hydrocarbon field; faults; geological-technical measures; remote methods; system of lineaments; ring structures; system of fractures; accumulated hydrocarbon production; intensification of an inflow.
|
|
SOME REGULARITIES OF
DEPOSITS SATURATION REFERRING
Vorobev Vladimir Sergeevich
LLC "Gazpromneft–Angara" 22A, Sinopskaya embankment, Saint Petersburg, 191167, Russian Federation, tel.: (812) 449-70-33, ext.. 4074, e-mail: Vorobev.VS@gazprom-neft.ru
Based on the analysis of geological-geophysical data on Verkhnechonsky, Ignyalinsky, Vakunaisky and Tympuchikansky deposits of the Nepa arch of Nepa-Botuoba anteclise of the Siberian Platform, the criteria to predict the positions of gas-oil and water-oil contacts are developed to study tectonically screened blocks, weakly explored by drilling. It is proved that the levels of gas-oil and water-oil contacts are determined by the hypsometric severity of productive terrigenous formations B10 and B13 of the Nepa suite. The use of the relations obtained allows to predict the nature of the Vendian terrigenous deposits, to estimate the potential reserves of fields’ separate areas and to plan the directions and volumes of exploration drilling.
Keywords: gas-oil contact; water-oil contact; saturation; clastic rocks; Napa arch; Verkhnechonskoe field; Vakunaiskoe field; Tympuchikanskoe field; Ignyalinskoe field.
|
|
A SYSTEM OF PERMANENT
MONITORING
Yakin M.V.
JSC NPF "Geogizika" 12, Vosmogo Marta str., Ufa, 450005, Republic of Bashkortostan, Russian Federation, e-mail: YAkinMV@npf-geofizika.ru
For the moment, more than half of the RF existing oil wells fund is equipped with electric submersible pumps (ESP), which provide the "lion" share of oil production in the country. Geophysical and hydrodynamic surveys of such wells are limited, on the one hand, by the apparatus delivery complexity (for an individual pump), while on the other hand, by significant losses in oil production because of wells prolonged shut-offs for studying. Negative consequence of a joint study of several objects is the inaccuracy in the reservoir characteristics determination for each formation and large errors in the reservoir pressure estimation. In addition, the most part of the multi-layer wells fund is not equipped with the systems that provide separate accounting of oil and fluid in layers. All this leads to an increase in the volume of false source information when monitoring the development of multi-layer objects. To solve this problem, JSC "NPF "Geofizika" developed hardware-software complex "Sprut", which is nowadays widely used in the oil-producing regions of the Russian Federation.
Keywords: electric submersible pump; oil field; logging while production; logging cable; oil bed; downhole equipment; mechanical flow meter; interference test; thermometer-manometer.
|
|
JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY" |