针对海上开发区的多船宽方位地震采集观测系统优化设计——以东海西湖凹陷为例  

Optimization of multi-vessel wide-azimuth observation system for seismic observation in offshore production zones: a case study on Xihu sag, East China Sea

作　　者：姜雨 陈华 姚刚 李艳青[2] 

机构地区：[1]中海石油(中国)有限公司上海分公司 [2]中海油田服务股份有限公司

出　　处：《中国石油勘探》2016年第4期114-120,共7页China Petroleum Exploration

摘　　要：随着海上已发现油气田陆续进入开发和生产阶段,对于地震资料品质的要求也越来越高。从传统宽方位施工方式出发,结合东海西湖凹陷实际地质条件和目前装备技术现状,通过对采集航次和震源船配置关系的改变,设计出满足地质需求的多船宽方位观测系统。在实际采集过程中,考虑到海上平台的影响,又采取变观措施对原观测系统无法实施的测线进行了补充,最终形成了一套针对海上开发区的多船宽方位地震采集观测系统设计方法。As the discovered offshore oil and gas fields are successively put into development and production, the requirements for seismic data quality are increasing. In this paper, based on conventional wide-azimuth observation system, and considering the actual geological conditions of the Xihu sag in the East China Sea and the situations of existing equipment, a new multi-vessel wide-azimuth observation system was designed to meet geological requirements by changing the voyage frequency and vessel deployment. In practical seismic acquisition, against the platform influence, geometry-variable design was also applied as a supplement to the survey lines that cannot be implemented by original observation system. Finally, an optimized design of multi-vessel wide-azimuth observation system was developed for seimsic acquisition in offshore production zones.

关 键 词：宽方位 采集设计 变观设计 西湖凹陷 

分 类 号：P631.4[天文地球—地质矿产勘探]