天然气勘探与开发2023，Vol.46Issue(4)：107-115,9.DOI:10.12055/gaskk.issn.1673-3177.2023.04.011
四川盆地东部卧龙河地区茅口组白云岩储层地震响应特征
Seismic-response characteristics on dolomite reservoirs of Maokou Formation,Wolonghe area,eastern Sichuan Basin
摘要
Abstract
For both karst reservoirs and gas reservoirs of the Middle Permian Maokou Formation,eastern Sichuan Basin,the success-ful exploration depends on the identification of their seismic-response characteristics and patterns.The early exploration was mainly concentrated around fractured limestone karst reservoirs whereas a little study on geophysical-response characteristics of porous do-lomite reservoirs in Wolonghe area of eastern basin,impeding the supreme exploration deployment and efficient development.Thus,based on seismic and drilling data,the well-logging and well-to-seismic response characteristics were summed up for the dolomite reservoirs.Then,not only longitudinal development pattern but actual response characteristics were figured out for the dolomite res-ervoirs of Maokou Formation after forward modeling.Finally,the reservoir distribution was predicted by using seismic attribute.Re-sults show that(i)the porous dolomite reservoirs of Maokou Formation in Wolonghe area possess three-low features in terms of well logging,for example relatively low P-wave velocity,and low natural gamma and resistivity;(ii)seismically,the reservoir bottom has weak to moderate moderate peak reflection.Due to its heterogeneous extension on the plane,this bottom presents a response pattern of intermittent peak reflection laterally;and(iii)the reservoirs and favorable facies belts can be identified by means of optimized maxi-mum peak amplitude with effect.关键词
四川盆地/卧龙河/中二叠世/白云岩/地震响应/储层识别Key words
Sichuan Basin/Wolonghe area/Middle Permian/Dolomite/Seismic response/Reservoir identification引用本文复制引用
何昌兴悦,陈康,李承泽,王浩,龙隆,李珂芮..四川盆地东部卧龙河地区茅口组白云岩储层地震响应特征[J].天然气勘探与开发,2023,46(4):107-115,9.基金项目
"十三五"国家科技重大专项"大型油气田及煤层气开发——四川盆地大型碳酸盐岩气田开发示范工程"(编号:2016ZX05052-001). （编号:2016ZX05052-001）
