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Physical Modeling and Seismic Response Characteristics Analysis of Strike-Slip Faults
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 81st EAGE Conference and Exhibition 2019, Jun 2019, Volume 2019, p.1 - 5
Abstract
In the northwest exploration area of Sinopec, a series of strike-slip faults are formed due to the multi-stage structure and stress action. These faults are closely related to the formation of oil and gas reservoirs, so the accurate identification of these faults is of great significance to the discovery of the gas and oil reservoirs. Through the development of heterogeneous physical model materials, strike-slip fault physical models with different widths and different degrees of rupture are constructed; seismic data acquisition and response characteristics analysis are also carried out. The results show that the amplitude of the fault reflection is the comprehensive response of fault scale and internal filling characteristics. By summarizing the geological characteristics, a physical model of three typical strike-slip faults forms with positive, negative, and graben are constructed. The data analysis results show that it is difficult to accurately depict the fault by seismic response or single attribute for different strike-slip faults forms, but the low frequency data can obviously improve the ability of recognition.