濮城油田沙二下油藏剩余油的影响因素及型式

doi:10.11743/ogg20010422

Abstract

Abstract:

After nearly 20 years of production,the water cut of the oil pool in the lower Sha 2 submember is up to 92.3%.The distribution of residual oil is influenced basically by structures,sedimentary facies and well density,and could be divided into 3 types:(1)discontinuous oil layers.This type of residual oil is mainly distributed in interchannel facies(Q),distal bar and sand flat facies(Y).The oil layers should be reformed before recovery;(2)incompleted injection recovery type.This type of residual oil is mainly distriuted in the 6th～8th sandbodies of lower Sha 2 submember,and it is not suitable for recovery at present;(3)fault sheltered type.This type of residual oil is distributed in the upper walls of Pu 46, 49, 25 and 14 faults,and could be recovered by directional well allocation.

Key words: residual oil, type, distribution, exploration, Pucheng Oilfield

CLC Number:

TE321

Xia Baohua, Zhou Zhuoming, Sun Xuexia, Zhao Lianjie, Zhang Hui. TYPES AND INFLUENCING FACTORS OF RESIDUAL OIL IN SHA-2 LOWER SUBMEMBER OIL POOL IN PUCHENG OILFIELD[J]. Oil & Gas Geology, 2001, 22(4): 385-387.

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TYPES AND INFLUENCING FACTORS OF RESIDUAL OIL IN SHA-2 LOWER SUBMEMBER OIL POOL IN PUCHENG OILFIELD

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