【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。更多还原

【Abstract】 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.更多还原