涠西区块3D浅层高分辨率处理技术

High-resolution Processing of Shallow 3D Seismic Data in the Weixi Block of Sinopec

刘冰

LIU Bing

中国石油化工股份有限公司上海海洋油气分公司勘探开发研究院, 上海 200120

Institute of Exploration and Development, SINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, China

为了得到涠西井场浅层地质灾害分析的高分辨率地震数据，在目标区没有原始采集的井场数据情况下，提出了利用原有两块不同采集方向的三维地震数据进行常规地震高分辨率处理的技术。相对常规的井场高分辨率处理，所涉及的主要难点包括：（1）采集网格不一致问题；（2）匹配问题；（3）多次波去除问题；（4）提高分辨率问题；（5）偏移方法的选取问题。在分别对这些问题进行分析后提出了解决方法，结果表明，这些方法满足地震资料解释的要求，为今后处理类似情况积累了经验，同时针对资料情况提出了今后需要改进的地方。

Due to the lack of original seismic data covering the area of Weixi wellsite, two volumes of 3D seismic data previously acquired in different direction were processed with conventional processing technology to get the high-resolution seismic data for the prediction of shallow geological hazards. Comparing with the conventional high-resolution processing of seismic data near wellsite, the main difficulties involved in this paper are as follows:(1) inconsistency of the acquisition grid; (2) matching problem; (3) removal of the multiple; (4) improvement of the resolution; (5) selection of the migration method. In this paper, the solutions have been proposed after analyzing the problems mentioned above. It shows that the methods can meet the requirements for the interpretation of seismic data could supply high quality data for seismic data interpretation, and the experience will be helpful to dealing with the similar problems later. In the meanwhile, the author also proposes some suggestions to improve the acquisition of data in the future.

https://doi.org/10.3969/j.issn.1008-2336.2016.02.007