基于变系数的强反射分离方法及应用——以塔河地区为例  

Strong reflection separation method based on variable coefficient and Its Application——Taking Tahe Area as an example

作　　者：丁立明 马海陇[1] 王震[1] 邓光校[1] 陈科[2] Ding Liming;Ma Hailong;Wang Zhen;Deng Guangxiao;Chen Ke(Northwest Oil Field Branch Of Sinopec,Xinjiang Wulumuqi 830011;Sinopec Geophysical Research Institute,Jiangsu Nanjing 211103)

机构地区：[1]中国石化西北油田分公司勘探开发研究院,新疆乌鲁木齐830011 [2]中国石化石油物探技术研究院,江苏南京211103

出　　处：《石化技术》2022年第9期171-172,175,共3页Petrochemical Industry Technology

摘　　要：塔河西部斜坡区由于不整合面引起的强反射,屏蔽了风化壳表面小尺度缝洞型储层的有效地震反射能量,隐藏在强反射层中的中小缝洞体难以识别。基于强反射的分离技术可以从地震数据中去除强反射,识别中小缝洞弱反射信息。为此,本文通过变系数的强反射分离,从地震数据中将强反射剥离,最大限度保留储层中小缝洞有效反射信息,有效识别出隐藏在强背景中的中小弱异常振幅能量,解决了强反射背景下风化壳缝洞型储层识别难的问题。The strong reflection caused by the unconformity surface in the western slope area of Tahe River shields the effective seismic reflection energy of the small-scale fracture cave reservoir on the surface of the weathered crust,and the small and medium fracture cave bodies hidden in the strong reflection layer are difficult to identify. The separation technology based on strong reflection can remove strong reflection from seismic data and identify weak reflection information of small and medium fractures and holes. Therefore,through the variable coefficient strong reflection separation technology,this paper separates the strong reflection from the seismic data,retains the effective reflection information of small and medium fractures and holes in the reservoir to the greatest extent,effectively identifies the small and medium weak abnormal amplitude energy hidden in the strong background,and solves the problem of identifying the weathered crust fracture and hole type reservoir under the strong reflection background.

关 键 词：塔河 强反射分离 变分离系数 小尺度缝洞 

分 类 号：P618.13[天文地球—矿床学] P631.4[天文地球—地质学]