CHARACTERISTICS OF PORE STRUCTURE OF RESERVOIR IN XINKAI AREA, LIAOHE OILFIELD

Abstract

Abstract: Based on the studies of pore cast thin section, electric microscope scanning, image analysis and mercury injection test of 32 sandstone samples with different petrophysical properties from five oil sand layers in seven wells in Xinkai area of Liaohe oilfield, this paper calculated seven parameters of pore characterization, thirteen throat characterization, three pore-throat connection and one characterizing complexity of pore structure.In all, the reservoirs in this area have large pore, wide throat, better sorting and pore-throat connectivity.Capillary pressure curves mostly have low and wide and gentle platform segment.There are some differences in different oil sand layers, Ⅰ and Ⅱ oil formations in Sha 1 member have the best pore structure, next is Ⅲ and Ⅳ oil formations, and Ⅳ oil formation in Sha 3 member is the worst.

Key words: Liaohe oilfield, Reservoir characteristics, Pore structure, Parameter, Rock pore, Pore throat

Zhong Dakang. CHARACTERISTICS OF PORE STRUCTURE OF RESERVOIR IN XINKAI AREA, LIAOHE OILFIELD[J]. Xinjiang Petroleum Geology, 1998, 19(4): 284-286.

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CHARACTERISTICS OF PORE STRUCTURE OF RESERVOIR IN XINKAI AREA, LIAOHE OILFIELD

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