Oil reservoirs of the crystalline basement of the White Tiger field

H. B. Nguen, V.I. Isaev

Abstract


Analysis of tectonics and rock petrotypes of The White Tiger oil field (the Southern Vietnamese shelf), and logs data of 165 wells revealed tectonic and petrological factors of formation and intensity of the secondary cavitation in the basement reservoirs. Studying of the pore space of rock reservoirs by the wells logging method is primarily based on acoustic and electric characteristics of the matrix porosity, fractures and caverns. The consistent pattern of variability (reduction) of porosity with depth was revealed. This pattern occurs in all selected geological blocks. The major factor causing the formation of the secondary cavitation in basement rocks is the tectonic factor, which reduces its influence with depth. The tectonic factor has the greatest influence on rocks of the Central and Northern blocks. An important factor causing the pattern of the porosity allocation is the allocation of rock petrotypes related with the direction and intensity of the secondary cavitation of rock reservoirs. Significant specific yield dependencies on the secondary cavitation determined by logs data were found for rock reservoirs of the basement in the Central and Northern blocks.


Keywords


The White Tiger field, oil reservoirs of the basement, tectonics, petrotypes, cavitation, logging, specific yield

References


Areshev E. G., Gavrilov V. P., Dong Ch. L., Ki¬re¬ev F. A., Shan N. T., 1996. Model of geodyna¬mic development of the continental shelf of the South of SRV. Neftyanoye khozyaystvo (8), 15—17 (in Russian).

Bogoyavlenskiy V. I., Bogoyavlenskiy I. V., Ni¬ko¬¬nov R. A., Dzyublo A. D., Ivanov A. N., Le V’et Haj, Varlamov D. I., 2016. Oil-and-gas con¬tent of the crystal base of the shelf of the southern Vietnam. Neftyanoye khozyaystvo (8), 98—104 (in Russian).

Gavrilov V. P., Gulev V. L., Kireev F. A., Doncov V. V., Sokolov V. I., 2010. Granitoid collectors and oil-and-gas content of the southern shelf of Vietnam. Moscow: OOO Nedra Publ. House, 294 p. (in Russian).

Ignatova V. A., 2010. Comparison of geodynamic models and oil-and-gas content of basins of the Far East of Russia and Southeast Asia. Tikhookeanskaya geologiya 29(2), 27—42 (in Russian). doi: 10.1134/S1819714010020028.

Koshlyak V. A., 2002. Granitoid collectors of oil and gas. Ufa: Publ. House «Tau», 242 p. (in Russian).

Nguen H. B., 2013a. Geophysical surveys of wells when studying magmatic collectors of the field the White Tiger. Izvestiya TPU 323(1), 27—33 (in Russian).

Nguen H. B., 2013b. Filtration-capacitive relationships of reservoir rocks of the crystalline basement of the White Tiger deposit (according to logging data): Abstract of the dis. Cand. geol.-min. Sci. Tomsk: TPU, 22 p. (in Russian).

Nguen H. B., Isaev V. I., 2013a. Geophysical surveys of wells when studying collectors in the crystal base of the field the White Tiger. Geofizicheskiy zhurnal 35(3), 131—145 (in Russian).

Nguen H. B., Isaev V. I., 2013b. Productivity of magmatic reservoirs of the White Tiger deposit. Karotazhnik (9), 64—76 (in Russian).

Pospelov V. V., 2005. Crystal base: geologic-geophysical methods of studying of collection potential and oil-and-gas content. Moscow-Izhevsk: Institute for Computer Research; SRC «Regular and chaotic dynamics», 260 p. (in Russian).

Serebrennikova O. V., Vu V. H., Savinyh Yu. V., Krasnoyarova N. A., 2012. Genesis of the White Tiger (Vietnam) oil deposits from the data on the composition of saturated acyclic hydrocarbons. Izvestiya TPU 320(1), 134—137 (in Russian).

Starostenko V. I., Lukin A. E., Tsvetkova T. A., Zaets L. N., Dontsov V. V., Savinyh Yu. V., 2011. On the participation of super-deep fluids in naftidogeneza (according to the study of the unique oil deposit of the White Tiger. Geofizicheskiy zhurnal 33(4), 3—32 (in Russian).

Timurziev A. I., 2008. Technology of forecasting of jointing on the basis of three-dimensional geomechanical and kinematic model of a fracture collector. Geofizika (3), 41—60 (in Russian).

Hoang Din’ Tien, 1999. Conditions of oil and gas formation and formation of hydrocarbon accumulations in the Cenozoic sedimentary basins of the continental shelf of Vietnam: Thesis. Dis. geol.-min. Sci. Vungtau: JV Vietsovpetro, Nipimorneftegaz, 325 p. (in Russian).

Chan Le Dong, Chan Van Hoj, Fung Dak Haj, Hoang Van Kui, Severinov E. V., Ivanov A. N., 2006. Feature of geology and development of a deposit of the base of the field White Tiger. Neftyanoye khozyaystvo (6), 24—26 (in Russian).

Isaev V. I., Nguen H. B., 2013.Cavitation in Oil-Gas Reservoirs of the Crystalline Basement from the Well Logging Data on the White Tiger Field in Vietnam. Russian Journal of Pacific Geology 7(4), 237—246. doi: 10.1134/S1819714013040040

Ngo Thuong San, Cu Minh Hoang, 2009. Mezo-Cenozoic tectonics and Cuu Long basin formation. Tạp chн dầu khн (3), 15—21 (in Vietnamese).




DOI: https://doi.org/10.24028/gzh.0203-3100.v39i6.2017.116363

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