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| AN INVERSION TECHNIQUE FOR WATER-ERODED CAVE TYPE CARBONATE RESERVOIRS |
| WANG Xiao-mei1, TANG Wen-bang1, LI Xue-zhu2, YANG Yong3 |
1. Beijing Zhiyuan Industrial Ltd, Beijing 100083, China;
2. South China Branch of Exploration and Development, SINOPEC, Kunming 650021, China;
3. China University of Geosciences, Beijing 100083, China |
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Abstract The general acoustic inversion method is based on layer media. As the water-eroded cave type carbonate reservoirs are characterized by high heterogeneity, the general acoustic inversion has its shortage. The utilization of the multi-constrained sparse spike inversion can identify the water-eroded cave type carbonate reservoirs and obtain accurate 3D wave impedance data. Different wave impedance data based on the low velocity character of water-eroded cave type reservoirs can be extracted. The technique is reliable for water-eroded cave type reservoir prediction in geological exploration.
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Received: 28 October 2003
Published: 24 February 2005
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