渤海多波地震勘探在复杂构造研究中的初步应用  

Preliminary application of component seismic exploration to the research of complicated structures

作　　者：刘春成 刘宝睿 

机构地区：[1]中海石油有限公司天津分公司技术部,天津300452

出　　处：《铀矿地质》2006年第4期235-239,共5页Uranium Geology

摘　　要：渤海蓬莱A构造主体上大面积浅层气形成屏蔽效应,致使地震成像不能准确反应地下地质构造特征。为此,在多波地震试验的基础上,在该构造上实施了海上三维四分量地震勘探及二维四分量地震采集。考虑到转换波处理的特殊性,在处理时特别注意了共转换点(CCP)道集的生成、水平分量方位角旋转等主要环节,从而得到了较好的转换波剖面。Because of the screening effect formed by large area low-layer gas above the Penglai A structure, Bohai Bay, the seismic imaging can not correctly reflect the features of subsurface geologic structure. Therefore, on the basis of multiwave seismic tests, an offshore 3D four-component （4-c） seismic exploration and an offshore 2D four-component （4-c） seismic acquisition were performed above the structure. Having considered the particularity in converted-wave processing we pay much attention to main links such as the generation of CCP trace gather, the azimuth angle rotation of horizontal component etc. , and better converted-wave profiles have been obtained.

关 键 词：多波地震 转换波 共转换点道集 “气烟囱” 

分 类 号：P631.4[天文地球—地质矿产勘探]