高精度三维叠前时间偏移处理技术在四扣地区的应用

Application of high-precision 3-D pre-stack time migration in Sikou area

1. 中国石化胜利石油管理局物探研究院,山东东营 257022;2. 中国石化胜利石油管理局地质科学研究院,山东东营 257015

Geophysical Research Institute, Shengli Oilfield Limited Company, SINOPEC, Dongying 257022, China

四扣地区地下构造复杂,义东大断裂斜穿整个工区,以往的资料虽然较好地反映了该地区的整体面貌,但对义东大断裂的成像效果不是很好,为此,在该区开展了叠前时间偏移处理技术研究。介绍了叠前时间偏移基础资料的准备工作,讨论了主要的偏移参数的测试和选取方法,给出了实际生产中的处理流程。处理结果表明, 利用高精度三维叠前时间偏移处理技术,改善了成像质量,分辨率和信噪比得到了提高。

Yidong huge fault goes athwart with Sikou area, the imaging effect is not very well. Effects of the pre-stack time migration technique on hydrocarbon exploration and development have been widely approved at present along with a pre-stack time migration technique is going to mature, its related techniques is being very well equipped, particularly the rapid development of the computer cluster. The paper presents the test and the select rules of the main migration parameters and the preprocessing technique with the pre-stack time migration. It sums up the processing flow in the product. The results show that using to high precision 3-D pre-stack time migration in Sikou area; improve to imaging quality, resolution and S/N.