用地震方法验证鄂西上二叠统礁相气藏  

Verfying Upper Permian Reef Gas Reservoirs in Western Hubel with Seismic Method

作　　者：马天泉[1] 李汝政 傅德慧 

机构地区：[1]江汉石油管理局地球物理勘探公司

出　　处：《天然气工业》1989年第1期1-5,共5页Natural Gas Industry

摘　　要：本文根据专门验证鄂西建南气田上二叠统礁相气藏的地震资料,总结出礁相气藏具有:外形呈凸镜状、内部反射杂乱、底部呈“伪下凹”、两侧反射终断产状上翘、礁下T_8反射能量衰减等五个特征,为地震找礁建立了一个模式。同时认为,在台地相的边缘及内部的古断裂带有利于生物礁发育,是鄂西找礁的有利地区。In this paper. based on the seismic data of specially verifying the reef gas reservoirs at Jiannan in Western Hubei, five features are summarized for the reef gas reservoirs, i. e., with a lens-shaped external form; with a disordered internal reflection: with a “false concave-downward”bottom; with a terminating reflection on both flanks and a upwarping occurrence: and with a attenuating reflection energy of T_8under the reefs. etc., and a model is established in search of reefs with seismic method. It is considered that the margin of the platform facies and the paleo-fracture zones in its interior are favourable for reefs to grow up and they are the favourble regions in search of the reefs in Western Hubei.

关 键 词：地震勘探 上二叠统 礁相气藏 

分 类 号：P631.44[天文地球—地质矿产勘探]