叠前时间偏移技术在四川盆地东部A区的应用  

Application of Prestack Time Migration Technology at Area A in the East of Sichuan Basin

作　　者：张亚斌[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

出　　处：《海相油气地质》2014年第2期75-78,共4页Marine Origin Petroleum Geology

摘　　要：针对四川盆地东部高陡构造带A区的陡倾角成像问题,采用了叠前时间偏移技术加以解决。在叠前精细处理的基础上,试验选取了合适的偏移方法和偏移参数,建立高精度速度场,叠前时间偏移取得了较好的成像效果,能量归位好,成像精度高,目的层的信噪比和分辨率明显提高。The technology of pre-stack time migration is selected to obtain accurate speed and migration imaging of steep dip structures with complicated surface conditions and severe variation of thickness and lateral velocity at Area A in the east part of Sichuan Basin. On the Basis of the pre-stack fine processing, the high precision of velocity field is set up and the offset parameter test is carried out. It is showed that this technology is characteristic of high precision migration imaging of pre-stack time, fine migration of the energy, and significant improvement in signal-to-noise and resolution ratio in target beds.

关 键 词：四川盆地东部 高陡构造 叠前时间偏移 地震成像 

分 类 号：P631.443[天文地球—地质矿产勘探]