泌阳北部斜坡地区复杂断块群成像技术探讨  

Imaging study of complex faulted block groups in northern slope of Biyang sag

作　　者：李会宪[1] 

机构地区：[1]中国石化河南油田分公司石油物探技术研究院,河南南阳473132

出　　处：《石油地质与工程》2011年第4期48-51,6-7,共4页Petroleum Geology and Engineering

摘　　要：泌阳凹陷北部斜坡是河南油田的重点勘探区块之一,其构造产状复杂,断层发育;根据高精度勘探思路,提出多域数据重构体去噪方法进行规则干扰压制,层析反演静校正解决该区复杂地表条件引起的静校正方面的问题;然后基于各向异性双谱速度分析技术,进一步提高该区成像速度模型的精度;通过分析偏移孔径、去假频参数等处理参数对成像效果的影响,确定出最佳偏移处理参数,最后利用Kirchhoff积分偏移方法对该区进行叠前成像处理;最终成果表明,该区新处理剖面在信噪比和横向分辨率方面都有一定程度的提高。The northern slope area of Biyang sag is one of the key exploratory blocks of Henan oilfield,with the characteristics of complex structure and developed faults.At the request of high accuracy of exploration,the denoising method of data reconstruction in multi - domains has been adopted to suppress interference,and the tomographic inversion of static ccorreclion can solve the problem caused by the complicated surface conditions.Based on the dual spectrum velocity analysis of anisotropy,the accuracy of imaging technology of this area can be further enhanced.Through processing parameters analysis of imaging effect,such as migration aperture, aliasing parameters,and etc.the optimal migration processing parameter has been determined.In the end,by using integral migration method,the prestack imaging process of this area has been conducted and the final results indicate the newly processed section is improved on the aspects of signal to noise ratio and seismic lateral resolution.

关 键 词：数据重构 层析反演 各向异性 双谱速度分析 泌阳凹陷 

分 类 号：P631.443[天文地球—地质矿产勘探]