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Data interpretation of joint compressional and shear wave survey in mountainous region (in Chinese)

Journal Article · · Shiyou Diqiu Wuli Kantan (Oil Geophysical Prospecting); (China)
OSTI ID:7191642
 [1]
  1. Petroleum Geologic Survey Div., Nanchong City, Sichuan Province (China)
The join utilization of compressional and shear wave data leads one to discover nonstructural hydrocarbon traps such as stratigraphic trap, lithologic trap, fracture trap, etc. and to ascertain fluid situation in formation, lithologic variation and fracture zone, so that the accuracy of seismic data interpretation is improved greatly. In this paper, the author describes how to determine shear wave horizon, how to interpret carbonate reservoir and how to discover gas accumulation zone in HBC area in Sichuan Province. It is very important to pay more attention to analyzing the ratio between compressional wave amplitude and shear wave amplitude, and the ratio between compressional wave velocity and shear wave velocity in data interpretation. The amplitude ratio anomaly and the velocity ratio anomaly in HBC area can be usually seen at anticlinal axis areas and small noses. Generally speaking, the amplitude ratio anomaly area reflects gas accumulation and the velocity ratio anomaly area exhibits dense fracture zone. Good results have been obtained from exploratory wells in the areas where there occur the two anomalies simultaneously.
OSTI ID:
7191642
Journal Information:
Shiyou Diqiu Wuli Kantan (Oil Geophysical Prospecting); (China), Journal Name: Shiyou Diqiu Wuli Kantan (Oil Geophysical Prospecting); (China) Vol. 27; ISSN 1000-7210; ISSN SDWKEP
Country of Publication:
United States
Language:
Chinese