高精度三维采集技术在江汉水网地区的应用

长江和汉水以及相应的堤坝所形成的禁炮区一直是江汉平原油气勘探的难点之一。随着新装备的应用和采集技术的发展,近年来,中石化地球物理公司在汉水与长江沿岸进行并完成了5个区块的高精度三维采集任务,形成了一套适合陆上水网不同类型震源联合采集的地震采集技术和施工方法,其主要内容包括基于地理信息系统的炮检点优化施工技术和不同类型震源匹配处理技术,所获得的地震剖面缺口小、信噪比高、连续性好,为地质解释提供了优质的地震资料。

Application of High-Precision 3D Acquisition Technology in Jianghan Water Network Area

Shot--forbidden area in the range of Yangtze River and Han River as well as their dams has been one of difficult areas for oil--gas exploration in Jianghan Plain. In recent years, Geophysics Company, Sinopec Oilfield Service Jianghan Corporation has carried on high--precision 3D acquisition in five sections along with Yangtze River and Han River with the help of new equipments and developing acquisition technology and formed a set of seismic acquisition technology and working method favorable for operation on land and water network area, including source--receiver points optimization operating technology based on GIS and matching processing technology for different types of sources. With them, acquired seismic sections feature narrow gap, high SNR and fine continuity, providing geological interpretation with superior seismic data.