Development Characteristics and Main Controlling Factors of Reservoir Space in Northern Yujiang Strike-Slip Fault Zone

doi:10.7657/XJPG20240205

Abstract

Abstract:

In order to understand the development characteristics and formation mechanism of reservoir space in the crushed zone of a strike-slip fault, based on the field outcrops, remote sensing images, and core testing data, the reservoir space in the northern Yujiang strike-slip fault zone was identified and quantified, and its main controlling factors were discussed. The results show that the crushed zone of the northern Yujiang strike-slip fault zone can be divided into a northern tenso-shear segment and a southern compresso-shear segment in a plane view. The two segments are different in the reservoir space development characteristics. The tenso-shear segment has larger fracture aperture, while the compresso-shear segment has larger fracture length, fracture density, fractured area, and cave area. Overall, the compresso-shear segment has larger reservoir space. The tectonic stress of the strike-slip fault zone is the external factor determining the development of dominant reservoir space, while the thickness and mineral composition of rocks are the internal factors controlling reservoir space development. The carbonate rocks with a thickness greater than 1 m and a calcium carbonate content of less than 70% can be reworked by compresso-shear process to form favorable areas for the development of fractured-vuggy reservoirs.

Key words: Yujiang strike-slip fault zone, crushed zone, tenso-shear segment, compresso-shear segment, fault-controlled fractured-vuggy reservoir, reservoir space, development characteristic, main controlling factor

CLC Number:

TE122.1

BAO Dian, HU Wenge, CAO Fei, PENG Xiaoping, LIAO Shixi, PAN Lin, WANG Xiao. Development Characteristics and Main Controlling Factors of Reservoir Space in Northern Yujiang Strike-Slip Fault Zone[J]. Xinjiang Petroleum Geology, 2024, 45(2): 172-180.

Figures/Tables 10

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