摘要
研究区块内某凹陷断裂系统十分复杂,构造破碎,圈闭面积小,火成岩发育广泛,地震资料以低信噪比为主,目的层地震资料分辨率较低。本文针对以上存在的问题,开展了目标性处理,在充分发挥各项处理技术优势的基础上,探索出一套实用的地震资料目标处理技术流程。实践证明,高分辨率拉冬变换能够有效衰减多次波,串联反褶积可用于深层高频能量补偿,各向异性叠前偏移技术能够精细刻画地下构造断裂特征,有效提高识别小断块的能力。该区复杂资料的目标处理成果有效地提高了地震剖面的质量,使弱反射目的层及小断块的成像效果得到明显改善。
Because of complex fracture system, faulted structures, and rich igneous rocks, the seismic data shows low signal-to-noise ratio and poor resolution in the study area. Aiming at resolving these problems, based on the fully used potentials of each processing technique, a set of practical target-oriented processing techniques is introduced in the paper .The practice proves that high resolution Radon transform can effectively attenuate multiples, cascaded deconvolution can be used in high-frequency energy compensation, anisotropy pre-stack time migration is able to accurately describe the structure fracture features, and improve the ability to identify the small fault block. The target-oriented processing techniques can effectively improve the quality of the seismic sections and improve the weak reflection layer and the small block imaging significantly.
出处
《油气地球物理》
2012年第1期36-40,共5页
Petroleum Geophysics
关键词
目标处理
小断块
高分辨率拉冬变换
串联反褶积
各向异性叠前时间偏移
target-oriented processing, small fault block, high resolution Radon transform , cascaded deconvolution and anisotropy pre-stack time migration
