Seismic Identification and Description of Ultra-Deep Fault-Controlled Reservoirs in Shunbei Area

doi:10.7657/XJPG20210217

Abstract

Abstract:

Fault-controlled reservoirs in Shunbei area are deep in buried depth and complex in reservoir space. And their distribution is mainly controlled by deep and large strike-slip faults. So it is difficult to accurately describe their spatial position, volume and connectivity during exploration and development of the fault-karst reservoirs. According to the geological model of the strike-slip faults, and the types and seismic response characteristics of the fault-controlled reservoirs, we first establish seismic recognition patterns through forward modeling and well logging-seismic analysis for analyzing the sensitive seismic attributes of the reservoirs, and develop a series of technologies for predicting the outlines and interiors of the fault-controlled reservoirs. Then we characterize the outlines and interiors of the fault-controlled reservoirs based on the structural tensor, enhanced coherence, instantaneous energy and clutter attributes and phase-controlled wave impedance inversion. Finally, we provide the technology using seismic data to identify the ultra-deep fault-controlled reservoirs in Shunbei area.

Key words: Shunbei area, strike-slip fault, fault-karst reservoir, forward modeling, seismic recognition pattern, seismic attribute

CLC Number:

TE112.221

LIU Jun, LI Wei, GONG Wei, HUANG Chao. Seismic Identification and Description of Ultra-Deep Fault-Controlled Reservoirs in Shunbei Area[J]. Xinjiang Petroleum Geology, 2021, 42(2): 238-245.

Figures/Tables 9

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