THE APPLICATION OF AVO TO THE PREDICATION OF WATER-ERODED CAVES FILLED WITH LIQUIDS FOR CARBONATE RESERVOIRS
SUN Hai-ning1, WANG Xiao-mei2, LIU Lai-xiang3
1. Geological Institute of Dongxin Oil Factory, Shengli Oilfield Co.Limited, SINOPEC, Dongying 257094, China;
2. Peking University, Beijing 100084, China;
3. Exploration and Production Research Institute, SINOPEC, Beijing 100083, China
The key of searching for carbonate reservoirs is to find large water-eroded caves filled with liquids. The AVO analysis can identify the nature of the cavern filling in the Tahe Oil Field. Where the water-eroded cave filler is liquid, it has intense S-wave. This is because the S-wave can not be spread in liquids, hence the cavity boundary is the absolute reflection of S-wave. In other words, where the cavity filler is liquid, it has intense reflection of S-wave and P-wave. The AVO technique can thus be used to obtain elastic inversion data. The S-wave attributes can be extracted and the water-eroded cave filled with liquids can be identified.
孙海宁, 王晓梅, 刘来祥. AVO技术在识别充填流体溶洞中的应用[J]. 物探与化探, 2008, 32(4): 397-399.
SUN Hai-ning, WANG Xiao-mei, LIU Lai-xiang . THE APPLICATION OF AVO TO THE PREDICATION OF WATER-ERODED CAVES FILLED WITH LIQUIDS FOR CARBONATE RESERVOIRS. Geophysical and Geochemical Exploration, 2008, 32(4): 397-399.