Reservoir Characteristics and Controlling Factors of M55 Sub-member of
Majiagou Formation in the East of Sulige Area

doi:10.11885/j.issn.1674-5086.2013.12.19.02

Abstract

Abstract:

Abstract：As the new member of oil-gas exploration，breakthrough in oil-gas exploration has been made in resent years at M55
Sub-member of Majiagou Formation in Ordovician. On the basis of the survey of core of well drilling，analysis of well logging，
identification of lamela，analysis of physical characteristics，the article studied the reservoir characteristics and analyzed the
controlling factors of reservoir in M55
Sub-member of Majiagou Formation in the east of Sulige Area. It suggested that the
main reservoir is a dolomite gas pool in M55
Sub-member in the east of Sulige Area and there is fine corresponding relationship
between the gas pool and dolomite. The intercrystalline pore is the main type of reservoir space. Among all kinds of rocks，the
medium crystalline dolomite，fine crystalline dolomite and powder crystalline dolomite have the best physical characteristics
of reservoir. The sedimentary microfacies mainly provided the material basis for the development of reservoir and the dolomite
controlled the distribution of effective reservoir. Besides，the diagenesis of buried period in the middle and later period is the
most beneficial to the reservoir development. Meanwhile，nose structure has certain influence on the gas pool，while paleokarst
takes little effect on reservoir in M55Sub-member.

Key words: Key words：easten Sulige, Majiagou Formation, M55 Sub-member, reservoir characteristics, controlling factors

Zhu Guangshe1，2, Zhao Junxing1，3, Shao Xiaoyan2, Li Fengjie1, Ji Mingming1. Reservoir Characteristics and Controlling Factors of M55 Sub-member of
Majiagou Formation in the East of Sulige Area[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.12.19.02.

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