基于等时地层格架的储层预测--以四川通南巴构造带飞仙关组为例  

Reservoir prediction based on isochronous stratigraphic framework:an example of Feixianguan formation in Tongnanba Structural Belt

作　　者：武丽[1] 张永贵[1] 姜大建[1] 赵艳平[1] 

机构地区：[1]中国石化石油勘探开发研究院,北京100083

出　　处：《石油地球物理勘探》2011年第6期944-951,1012+834,共8页Oil Geophysical Prospecting

摘　　要：碳酸盐岩储层具有埋藏深、地震反射信号弱、非均质性强等特点,因此有效地进行储层预测成为碳酸盐岩油气勘探开发的关键。本文以四川盆地通南巴构造带飞仙关组为主要研究层位,运用海相碳酸盐岩层序地层学及沉积学原理,结合野外露头层序调查和研究区钻井、测井及地震等资料的分析,对通南巴构造带飞仙关组进行了层序地层划分,建立了区域等时层序地层格架。在此基础上,对飞三段储层进行精细标定,明确了飞三段鲕滩储层的地球物理响应特征;并利用高分辨率三维地震成像技术和基于等时地层格架的薄层地震属性分析技术及虚拟现实技术,对飞三段鲕滩储层进行了精细预测。研究结果表明:该区鲕滩储层在平面上主要分布于河坝场构造和马路背构造,而母家梁和黑池梁为储层相对不发育区;储层厚度在河坝场较大,而在马路背相对较小。Because of deep embedding,weak seismic reflection,strong heterogeneity of carbonate reservoir,very little progress in exploration of marine nature gas in South China have been made lately.Therefore,effective methods to predict carbonate reservoir are keys of oil and gas exploration in this area.Based on theory of sedimentology and sequence stratigraphy on marine carbonate,in this paper we divide sequence stratigraphy of Feixianguan formation in Tongnanba structural belt in Sichuan Basin and establish its regional isochronous stratigraphic framework using with fieldwork data,drilling,logging and seismic data.Then we calibrate delicately reservoirs,obtain geophysical response characteristics of oolitic beach reservoir in isochronous stratigraphic framework.Based on high-resolution 3D seismic imaging,seismic attributes analysis of sequence stratigraphic framework and virtual reality,we predict oolitic beach reservoir distribution of Feixianguan formation in Tongnanba structural belt.Results show that the reservoirs of Feixianguan formation developed in Hebachang and Malubei in plane,thickness of reservoir in Hebachang is greater than in Malubei.

关 键 词：储层预测 等时地层格架 鲕滩储层 碳酸盐岩 飞仙关组 通南巴构造带 

分 类 号：P631[天文地球—地质矿产勘探]