Abstract：The exploration of subtle oil/gas reservoirs in Liaodong Bay zone has both successful cases and failure cases, showing the difficulty in recognition of subtle oil/gas reservoirs. For that reason, the paper presented a set of technical flows of geophysical recognition for developing the exploration of subtle oil/gas reservoirs in Liaodong Bay area. During the study, we firstly used physical test data of rocks to build up petrophysical model and to conduct inversion of S-wave velocity, then, defined the developed zones of subtle oil/gas reservoirs by the studied results of sedimentary rule, analysis of seismic facies and time-frequency analysis etc; conducted lithologic prediction for effective recognition of reservoirs by inversion of elastic wave impedance on the basis of inversion of S-wave velocity; comprehensively studied the oil/gas-bearing a-bility of reservoirs by using analysis of AVO attributes, analysis of absorption and multi-attributes analysis. By using this set of recognizing techniques to predict the reservoirs and gas-bearing possibility of 31-6a target, we consider that the target is gas-bearing trap.
刘志斌, 李绪宣, 李幼铭, 孙翠娟. 辽东湾31-6区块隐蔽油气藏的地球物理识别[J]. 石油地球物理勘探, 2006, 41(2): 198-203.
Liu Zhi-bin, Li Xu-xu-an, Li You-ming, Sun Cui-juan. Geophysical recognition of subtle oil/gas reservoir in block 31-6 of Liaodong Bay.. OGP, 2006, 41(2): 198-203.
