Логин:
Пароль:
Регистрация
Забыли свой пароль?

Geological and geochemical concept of petroleum system formation on the territory of the project «Remote group of fields» in the area of operation of Gazpromneft-Noyabrskneftegas LLC

UDK: 551.263
DOI: 10.24887/0028-2448-2019-12-21-25
Key words: Yanov Stan formation, Bazhenov formation, migration, accumulation, hydrocarbons, exploration
Authors: N.V. Morozov (Gazpromneft NTC LLC, RF, Saint-Petersburg), D.Yu. Kalacheva (Gazpromneft NTC LLC, RF, Saint-Petersburg), O.A. Zakharova (Gazpromneft NTC LLC, RF, Saint-Petersburg), M.V. Bukatov (Gazpromneft NTC LLC, RF, Saint-Petersburg), S.A. Pogrebnyuk (Gazpromneft NTC LLC, RF, Saint-Petersburg), F.G. Gaynetdinov (Gazpromneft-Noyabrskneftegas LLC, RF, Noyabrsk), M.N. Nikolaev (Gazpromneft-GEO LLC, RF, Saint-Petersburg)

Petroleum systems analysis is an effective tool for evaluation risks of generation, migration, accumulation and preservation of hydrocarbons. In this paper we consider the main results of geochemical studies of the organic matter of rock samples and upper Jurassic fluids in the territory of a remote group of fields which are included in the area of operation of Gazpromneft-Noyabrskneftegas LLC. According to the results of geochemical studies, it was found that the main genetic source for the oil samples within the study area is Bazhenov formation, which indicates that hydrocarbon deposits in the territory of a remote group of fields formed mainly due to lateral migration from the kitchen area of Bazhenov formation in more submerged zones. Based on an in-depth study of the distribution of biomarker hydrocarbons in oil and extract samples, it was possible to establish boundary zones for the hydrocarbon migration range. Using geochemical data, the study area was ranked according to the degree of prospectivity of the presence of hydrocarbons. The study of the work was reducing of geological uncertainties associated with the prediction of the traps filling in an area remote from the generation sources over a considerable distance (more than 115 km). Based on the developed geological and geochemical concept of the deposits formation, the study area was ranked according to the degree of prospect filling the traps in the Yanov Stan and Sigov formations, which allowed us to adjust the exploration program, reassess geological chance of success (GCoS) risks associated with the parameters of oil migration from sediments of Bazhenov formation to a trap in the proposed accumulation zone within the Yanov Stan formation.

References

1. Goncharov I.V. et al., Prospects of shale oil Bazhenov formation in the south-east of Western Siberia, SPE-171170-MS, 2014.

2. Grandtham P.G., Wakefield L.L., Variations in the sterane carbon number distributions of marine source rock derived crude oils through geologic time, Organic Geochemistry, 1988, V. 12, pp. 61–73.

3. Kontorovich A.E. et al., Regional'noe issledovanie geokhimii syrykh neftey i otdel'nykh materinskikh porod Zapadno-Sibirskogo basseyna (Regional study of the geochemistry of crude oils and selected parent rocks of the West Siberian basin), GEOMARK RESEARCH, INC., SP Tairus Publ., 1994, 294 p.

4. Goncharov I.V., Oblasov N.V., Smetanin A.V. et al., Genetic types and nature of fluid of hydrocarbon deposits south-east of Western Siberia (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2012, no. 11, pp. 8–13.

5. El Diasty W.S., Moldowan J.M., The Western Desert versus Nile Delta: A comparative molecular biomarker study, Marine and Petroleum Geology, 2013, V. 46, pp. 319–334.

6. Waples D.W., Machihara T., Application of sterane and triterpane biomarkers in petroleum exploration, Bulletin of Canadian Petroleum Geology, 1990, V. 38, no. 3, pp. 357–380.

7. Shashel' V.A., Bukatov M.V., Peskova D.N. et al., New discovery as a result of complex approach to brownfield region evaluation (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2017, no. 12, pp. 21–23.

Petroleum systems analysis is an effective tool for evaluation risks of generation, migration, accumulation and preservation of hydrocarbons. In this paper we consider the main results of geochemical studies of the organic matter of rock samples and upper Jurassic fluids in the territory of a remote group of fields which are included in the area of operation of Gazpromneft-Noyabrskneftegas LLC. According to the results of geochemical studies, it was found that the main genetic source for the oil samples within the study area is Bazhenov formation, which indicates that hydrocarbon deposits in the territory of a remote group of fields formed mainly due to lateral migration from the kitchen area of Bazhenov formation in more submerged zones. Based on an in-depth study of the distribution of biomarker hydrocarbons in oil and extract samples, it was possible to establish boundary zones for the hydrocarbon migration range. Using geochemical data, the study area was ranked according to the degree of prospectivity of the presence of hydrocarbons. The study of the work was reducing of geological uncertainties associated with the prediction of the traps filling in an area remote from the generation sources over a considerable distance (more than 115 km). Based on the developed geological and geochemical concept of the deposits formation, the study area was ranked according to the degree of prospect filling the traps in the Yanov Stan and Sigov formations, which allowed us to adjust the exploration program, reassess geological chance of success (GCoS) risks associated with the parameters of oil migration from sediments of Bazhenov formation to a trap in the proposed accumulation zone within the Yanov Stan formation.

References

1. Goncharov I.V. et al., Prospects of shale oil Bazhenov formation in the south-east of Western Siberia, SPE-171170-MS, 2014.

2. Grandtham P.G., Wakefield L.L., Variations in the sterane carbon number distributions of marine source rock derived crude oils through geologic time, Organic Geochemistry, 1988, V. 12, pp. 61–73.

3. Kontorovich A.E. et al., Regional'noe issledovanie geokhimii syrykh neftey i otdel'nykh materinskikh porod Zapadno-Sibirskogo basseyna (Regional study of the geochemistry of crude oils and selected parent rocks of the West Siberian basin), GEOMARK RESEARCH, INC., SP Tairus Publ., 1994, 294 p.

4. Goncharov I.V., Oblasov N.V., Smetanin A.V. et al., Genetic types and nature of fluid of hydrocarbon deposits south-east of Western Siberia (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2012, no. 11, pp. 8–13.

5. El Diasty W.S., Moldowan J.M., The Western Desert versus Nile Delta: A comparative molecular biomarker study, Marine and Petroleum Geology, 2013, V. 46, pp. 319–334.

6. Waples D.W., Machihara T., Application of sterane and triterpane biomarkers in petroleum exploration, Bulletin of Canadian Petroleum Geology, 1990, V. 38, no. 3, pp. 357–380.

7. Shashel' V.A., Bukatov M.V., Peskova D.N. et al., New discovery as a result of complex approach to brownfield region evaluation (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2017, no. 12, pp. 21–23.



Attention!
To buy the complete text of article (a format - PDF) or to read the material which is in open access only the authorized visitors of the website can. .

Mobile applications

Read our magazine on mobile devices

Загрузить в Google play

Press Releases

21.10.2020
21.10.2020
19.10.2020