孤岛、孤东油田馆上段微相特征与剩余油分布

doi:10.11743/ogg20000315

Abstract

Abstract:

The upper member of Guantao Formation consists mainly channel bar,point bar,arrested deposits on valley floor,natural levee,crevasse splay,alluvial lake and alluvial flat microfacies.The diposits are principally sandstone and siltrock with mid lower composition maturity and small cross bedding.1～4 sand set are meandering stream deposits,5～6 sand sets are braided channel deposits.The reservoirs of the study area have good physical property,big porosity and high permeability.Sedimentary facies zones controlled the variation of the physical property and improved the porosity and permeability.The channel bars and point bars contain less remaining oil,but alluvial flats and natural levee have relatively rich remaining oil.

Key words: sedimentary microfacies, remaining oil, oil expulsion efficiency

CLC Number:

P618.130.2⁺1

Cai Zhong. CHARACTERISTICS OF MICROFACIES AND DISTRIBUTION OF REMAINING OIL IN UPPER MEMBER OF GUANTAO FORMATION FROM GUDAO AND GUDONG OILFIELDS[J]. Oil & Gas Geology, 2000, 21(3): 256-258.

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CHARACTERISTICS OF MICROFACIES AND DISTRIBUTION OF REMAINING OIL IN UPPER MEMBER OF GUANTAO FORMATION FROM GUDAO AND GUDONG OILFIELDS

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