面向开发目标的高精度三维地震优势分析——以大牛地气田为例  

For the development goals of high precision 3D seismic advantage analysis——Take Daniudi gas feild for example

作　　者：孙振涛[1] 刘俊州[2] 罗延[1] 

机构地区：[1]中国石化石油物探技术研究院,南京211103 [2]中国石化石油勘探开发研究院,北京100083

出　　处：《物探化探计算技术》2017年第5期691-697,共7页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家重大专项(2011ZX05045)

摘　　要：以大牛地气田开发中应用的高精度三维地震为例,剖析了高精度三维地震资料在识别小地质体和储层含油气性预测等方面的优势。在观测系统上,高精度三维地震采集对资料频带宽度、覆盖次数、空间采样密度都有较大提高,改进了激发和接收效果,资料品质得到改善。从叠前道集资料对比、叠后剖面对比、横向分辨率对比上来看,高精度三维地震具有较高的纵横向分辨率,能够识别小地质目标。较高的覆盖次数和较大的偏移距能够满足叠前反演等技术地需求。结合实际钻井、试气资料对比,高精度三维地震在识别储层的基础上能够有效准确地识别含油气性,与钻井吻合率达到了82%,已成为油气田开发的有效技术手段。Taking the high precision 3 Dseismic applied in the Daniudi gas field development for example,we analyze the advantages of high precision 3 Dseismic data in the identification of small geologic body and oiliness of reservoir prediction,etc.On the observation system,high precision 3 Dseismic acquisition has increased greatly in frequency band wideth,number of coverage and space sampling density.This improved excitation and reception,so the seismic data quality has improved greatly.From prestack gathers data comparison,poststack profile contrast and lateral resolution,high precision 3 Dseismic has higher lateral and vertical resolution,which enable to identify small geological target.Higher folds and larger offset can meet the needs of pre-stack inversion technology.Combined with the actual drilling and testing data contrast,high precision 3 Dseismic can identify reservoir,and identify efficiently the oil-gas possibility,and drilling self-agreement reached 82%.This technology is then the effective technology of oil and gas field development.

关 键 词：高精度 纵向分辨率 横向分辨率 含气性检测 

分 类 号：P631.4[天文地球—地质矿产勘探]