对近海四分量地震技术研究与应用的认识和思考

从我国近海的地质和纵波地震勘探现状来看,四分量地震技术能够解决一些勘探难题。该项技术引入我国还只有4年时间,在1998-2000年之间开展了处理和解释方法研究,并在莺歌海盆地进行了试验,之后,国外石油公司分别在合作区块蓬莱19-3油田采集了三维四分量地震资料、在崖城13-1气田采集了2条测线的二维四分量地震资料。从我国的试验情况来看,四分量地震勘探在解决气烟囱成像、小断层及低幅度构造识别、岩性及浅层气藏预测方面的效果是很好的,在各向异性研究方面也能起到较好的效果。认为我国在四分量地震技术研究方面还需要加强,还需要继续投入大量资金;虽然在四分量地震技术方面还有一些问题有待解决,但它的应用前途是光明的,因为单一的纵波勘探必将走向多分量勘探。

THE UNDERSTANDING AND CONSIDERING OF RESEARCH AND APPLICATIONS OF OFFSHORE FOUR COMPONENTS SEISMIC

The four components seismic acquisition technology is mature.Four components seismic is useful to solve some key exploration problems of Chinese offshore.It was four years for China to have imported this technology.The researchers who work for CNOOC(China national offshore oil company) did research for 4C data processing and interpretation.CNOOC did test in Ynggehai basin.The foreign oil companys acquisited 3D four components seismic data in Penglai 19-3 oil field in Bohai basin and get 2D data in Yacheng 13-1 gas field in Qiongdongnan in 2000.In a word,it is effective to solve "gas chimney" imaging,small fault and low range structure identifying, lithology and shallow gas reservoir predicting. 4C can be used to predict anisotropy. It is nesssery for China to invest more money, and strengthen research. Now, although 4C is not perfect enough, we believe its future must be good. I foretell the present longitudinal wave exploration must be insteaded by 4C in the future.So, I appeal Chinese men of insight should give 4C more attention and care.