塔里木盆地YQD井区断控缝洞体增强技术研究  

Study on strengthening technology of fault-controlled fracture cavity in YQD well area of Tarim Basin

作　　者：徐浩 李赫 XU Hao;LI He(Research Institute of Exploration and Development,Northwest Oilfield Company,SINOPEC,Urumqi 830011,China;Southwest Geophysical Research Institute,Dongfang Geophysical Exploration Company,CNPC,Chengdu 6l0041,China)

机构地区：[1]中石化西北油田分公司勘探开发研究院,乌鲁木齐830011 [2]中国石油集团东方地球物理勘探有限公司西南物探研究院,成都610041

出　　处：《复杂油气藏》2022年第4期31-37,共7页Complex Hydrocarbon Reservoirs

基　　金：中石化科技部项目“塔北重点区带奥陶系储层精细成像及预测技术研究”(P21048-2)。

摘　　要：塔里木盆地YQD井区奥陶系碳酸盐岩储层主要受北东向走滑断裂控制。围绕北东向走滑断裂寻找规模储集体是重点攻关方向。但因为该工区地震资料信噪比不满足断裂识别和储层预测的需要,严重制约了勘探进程。针对这一问题先后开展了以不同尺度断裂响应特征为基础的断裂增强处理,基于分频解释的思想,先增强后融合;同时开展了以实钻井储层响应特征为基础的缝洞增强处理,拾取特征频率进行频率重构。应用结果表明:基于分频处理的断裂增强技术可有针对性的增强不同级别断裂的响应特征,增强大尺度断裂显示效果,提高小尺度断裂的分辨能力;基于分频重构的缝洞增强技术可增强串珠响应特征,弱化背景能量。将两者融合后,可为下一步上钻目标优选提供有力支撑。The Ordovician carbonate reservoirs in the YQD well area of Tarim Basin are mainly controlled by northeast strike-slip faults.Focusing on the northeast strike-slip faults to find a large-scale reserve collective is the key direction of research.However,because the signal-to-noise ratio of seismic data in this area can not meet the needs of fracture identification and reservoir prediction,it has seriously restricted the exploration process.In response to this problem,it was carried out the fracture enhancement processing based on fracture response characteristics of different scales,and the idea of split-frequency interpretation,first enhancement and then fusion;meanwhile,it was carried out fracture cavity enhancement processing based on reservoir response characteristics of real drilled wells,picking up the characteristic frequency for frequency reconstruction.The application results show that the fracture enhancement technique based on split-frequency processing can enhance the response characteristics of different levels of fractures in a targeted manner,enhance the display effect of large-scale fractures,and improve the resolution of small-scale fractures;the fracture cavity enhancement technique based on split-frequency reconstruction can enhance the response characteristics of beads and weaken the background energy.The integration of the two can provide strong support for the next step of target optimization.

关 键 词：断裂增强 分频解释 分频重构 塔里木盆地 

分 类 号：P631[天文地球—地质矿产勘探]