全三维地震解释技术在南海西部深水区峡谷水道研究中的应用实践  

Application of full 3Dseismic interpretation technology to canyon channels in deepwater area of western south China Sea

作　　者：刘爱群 周家雄 范彩伟 陈殿远 赫建伟 李文拓 

机构地区：[1]中海石油(中国)有限公司湛江分公司,湛江524057

出　　处：《地球物理学进展》2015年第3期1230-1234,共5页Progress in Geophysics

基　　金：国家十二五重大专项(2011ZX05025-002)和(2011ZX05023-004)资助

摘　　要：南海西部深水区具有丰富的天然气资源,但由于领域广,水深大,地震和钻井资料少,整体勘探程度较低.2010年LSA井的钻探成功,正式拉开了南海西部深水勘探的序幕.LSA井钻探的有利目标为中央峡谷水道砂,为了快速客观的评价水道型目标的分布范围与油气关系,结合地震资料特点采用全三维地震解释技术.该方法是一种能有效地将地质知识应用于地震解释的综合解释方法,它可以使解释人员从不同属性的三维数据体中快速获取各种信息,对局部构造、断裂系统、砂体、沉积相带展布等进行系统研究和成图,取得一系列重要成果,从而大大缩短了解释周期,直观地展现了主要目的层段局部构造和断裂系统发育特征,有效地预测了中央峡谷水道砂体发育情况,迅速准确地指导油气勘探开发.There are abundant natural gas resources in the deepwater region of Western South China Sea. Because of broad areas, great water depths and less seismic and drilling data, the overall exploration degree is low. The sucessful drilling of LSA wells in 2010 officially opened the prelude to western South China Sea deepwater exploration. Favorable exploration target for LSA wells is the central valley waterways sand. In order to quickly and objectively evaluate the distribution range of the waterway type targets and the oil and gas relationship, combined with seismic characteristics, a full 3D seismic interpretation technology is adopted. The method is a comprehensive interpretation method effectively using geological knowledge. It can help analysts to have a quick acess to a variety of information from 3D data with different attributes, and make systematic research on the local structures, fault systems, sandbodies, sediment facies distribution and draw a result map . This can make a series of important results, thus greatly reducing the interpretation cycle, and visually showing local structures of the main target segment and fracture system development characteristics. The method can also effectively predict the development situation of central canyon channel sandbodies and guide the oil and gas exploration and development quickly and accurately.

关 键 词：深水区 全三维地震解释 中央水道 子体雕刻 

分 类 号：P631[天文地球—地质矿产勘探]