井控在叠前深度偏移处理中的应用  

The Application of Well Controll to Pre-stack Depth Migration Processing

作　　者：石倩茹[1] 周宗良[1] 王怀忠[1] 李云鹏[1] 肖建玲[1] 张祝新[1] Shi Qianru Zhou Zongliang Wang Huaizhong Li Yunpeng Xiao Jianling Zhang Zhuxin(Research Institute of Exploration and Development, Dagang Oil field, Tianjin 300280, Chin)

机构地区：[1]大港油田公司勘探开发研究院,天津300280

出　　处：《工程地球物理学报》2016年第5期595-602,共8页Chinese Journal of Engineering Geophysics

摘　　要：为提高地震资料的保幅保真性、纵横向分辨率尤其是处理过程中井震吻合的程度,在板桥斜坡地震处理过程中,经过一致性处理后,充分利用井的信息将井旁地震道与合成记录或VSP走廊叠加进行互相关分析,生成一系列描述地震资料与井资料匹配程度的匹配属性,用井资料约束,进行反褶积、反Q滤波,确保在保真保幅的前提下合理有效地提高分辨率,运用深度—速度模型的迭代优化,选取准确的叠前深度偏移速度场,有效提高目标区复杂断裂带的成像精度,使之更符合地下地质的真实特征,为后续构造精细解释及储层预测提供可靠的成果数据。钻探实践证明,井控叠前深度偏移处理是解决复杂构造成像、沉积现象丰富、纵向上地层厚度变化大等地质问题的有效手段,是未来地震资料处理的必由之路。In order to improve amplitude-preserved and fidelity of the seismic data, vertical and horizontal resolution, in particular, the match degree of processing seismic well, and in the process of Banqiao slope seismic processing after consistent processing, the information from the well is fully used to analyze the well side seismic synthetic records or VSP corridor stack so as to generate a series describing seismic data and well data matching degree of matching attributes. The well data are used to be constrained, to make deconvolution and to inverse Q filtering to ensure that the the effective resolution is raised under the condition of the fidelity amplitude preserving. Besides, the depth-velocity model of iterative optimiza- tion is adopted and the accurate prestack depth migration velocity field is chosen to improve the imaging accuracy of complex fault zone in a target area, which conforms to the under- ground geological characteristics and provides reliable results for the subsequent fine struc- ture interpretation and reservoir prediction data.

关 键 词：板桥斜坡 井旁地震道 一致性处理 井控反褶积 井控反Q滤波 迭代优化 

分 类 号：P631[天文地球—地质矿产勘探]