Static Connectivity Evaluation on Fault-Controlled Reservoir System in the Middle Section of Shunbei No.4 Fault Zone，Shunbei Oilfield

doi:10.7657/XJPG20230410

Abstract

Abstract:

There are various types of reservoirs in the fault-controlled reservoir system in the Shunbei No.4 strike-slip fault zone, and the spatial positions of the reservoirs affect the connectivity of the reservoir system and restrict the production of oil wells in different locations. A method of pre-drilling evaluation on the connectivity of target reservoir system was proposed to evaluate the connectivity of fault-controlled reservoir system in the middle section of the Shunbei No.4 strike-slip fault zone. The results show that the fault-controlled reservoir system in the middle Shunbei No. 4 strike-slip fault zone can be divided into 4 compartmental units. The connectivity rates of internal caverns of the 4 compartmental units all exceed 50%, with extended high-angle fractures, large cumulative thickness of vertical caves, and strong connectivity. The favorable reservoirs in compartmental units 3 and 4 indicate high probabilities in obtaining higher production.

Key words: Shunbei oilfield, middle section of Shunbei No.4 strike-slip fault zone, fault-controlled reservoir system, connectivity evaluation, 3D visualization, fracture prediction, compartmental unit

CLC Number:

TE122

LIU Jun, LIAO Maohui, WANG Laiyuan, GONG Wei, HUANG Chao, ZHA Ming. Static Connectivity Evaluation on Fault-Controlled Reservoir System in the Middle Section of Shunbei No.4 Fault Zone，Shunbei Oilfield[J]. Xinjiang Petroleum Geology, 2023, 44(4): 456-464.

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Table 1.

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