【摘要】 裂缝是油气运移和聚集的重要场所。在川东北TNL地区发现的天然气藏主要为深埋的裂缝性气藏。本文利用叠前保幅处理的三维地震资料,在建立岩石物理正演模型的基础上,参考应力场分析结果以川东北TNL地区嘉陵江组二段裂缝型储层为例,对利用叠前地震方位P波技术进行裂缝检测进行了讨论,并归纳了相应的检测流程。检测结果表明,该区存在两条北东向和一条北西向断层发育带,裂缝主要发育在北东向应力与北西向应力交错部位。更多还原

【Abstract】 The fracture is important place for oil&gas migration and accumulation. The most gas reservoirs found in TNL area in Northeast Sichuan are deep fracture gas reservoirs. In this paper by utilizing the 3d pre-stack amplitude preservation processed seismic data, based on established rock physics forward model and by referring to the results of the stress field analysis, the application of pre-stack seismic azimuthal P-wave in the fracture detection was discussed for the fracture reservoir in second section of Jialingjiang formation in TNL area of Northeast Sichuan, and corresponding detection flowchart was summarized. The detection results show that two NE fault development zones and one NW fault development zone were developed in this area, and the fractures were mainly developed in the interleaving zone of NE stress and NW stress.更多还原