地震采集技术在油田开发中的应用及相关问题探讨

Applications of seismic acquisition technology in oilfield development and discussion on relevant problems

随着老油区勘探开发的深入,勘探开发的难度越来越大.辽河油区的特点是储集体主要为陆相复杂小断块和复杂隐蔽岩性圈闭.目前开发面临的难点表现在四个方面:深、隐、低、小."深"是指勘探目标埋深不断加大;"隐"是指勘探对象的隐蔽性不断增加;"低"是指低渗透、特低渗透油气藏所占的比例不断上升;"小"是指勘探对象的单元储量规模越来越小.从目前国内外地震技术的应用现状来看,要解决上述问题有以下两种有效途径:一是高密度地震勘探技术,二是开发地震技术,主要包括井间地震、多分量地震、VSP测井和四维地震技术.本文介绍了辽河探区近年来地震技术在油田开发中的应用,并对辽河探区下步针对油田开发的地震技术发展思路进行了分析.

With deep exploration and development in old oilfields, it is more and more difficult to explore and develope the hydrocarbon resources, which becomes an obvious characteristic of the Liaohe oilfield that terraneous complex small faultages and secluded lithology traps are its main reservoirs. At present, the difficulties faced by oilfield development are deep, hidden, low, small, which means exploration layer is deeper, exploration target is more hidden, the proportion of low permeability and ultra-low permeability reservoir are more, and the scale of each exploration target is getting smaller and smaller. Based on current domestic and international seismic technology status, there are two effective ways to solve these problems： one is high-density seismic exploration technology, the other is to develop seismic technology, which includes cross-hole seismic, multi-component seismic, VSP logging and four-dimensional seismic technology. This article describes some recent applications of seismic technology to oilfield development. Meanwhile, it analyses the idea of developing seismic technology for oilfields in the Liaohe exploration region in the future.