古海相致密碳酸盐岩储层描述技术——以川东南涪陵南部地区飞仙关组三段鲕粒灰岩为例  

RESERVOIR DESCRIPTION FOR MARINE CARBONATE ROCK:A CASE STUDY OF OOLITIC LIMESTONE IN 3RD MEMBER OF FEIXIANGUAN FORMATION IN SOUTH FULING AREA OF SOUTHEAST SICHUAN

作　　者：张新 唐德海 汪建辉 ZHANG Kin TANG Dehai WANG Jianhui(Branch of the SINOPEC Exploration Company, Chengdu 610041, China)

机构地区：[1]中国石油化工股份有限公司勘探分公司研究院,成都610041

出　　处：《海洋地质前沿》2017年第9期60-65,共6页Marine Geology Frontiers

基　　金：中国石化股份有限公司油田事业部重大导向项目"四川盆地及周缘海相领域突破方向与目标评价"

摘　　要：针对涪陵南部低钻探程度区,以层序地层、沉积相等研究为主,地震参数为辅的技术思路开展储层描述。基础研究表明,涪陵南部地区与鄂西渝东建南地区处于同一个缓坡高能沉积相带内。利用层系地层学建立飞三段鲕滩发育模式,结合前人对飞三段鲕滩储层响应特征描述、建南地区jian35井飞三段鲕滩储层地震响应特征分析及模型正演,开展研究区飞三段鲕滩储层响应特征分析,总结出涪陵南部飞三段鲕滩储层具有叠置迁移的"亮点"响应特征。进一步结合地震相、地震属性及地震反演,落实出涪陵南部飞三段鲕滩储层有利分布区。Reservoir description in the Fuling area relies mainly on sequence stratigraphy and sedimentary facies analysis,supplemented by seismic parameters,in case there is lack of drilling data.Basic research suggests that the south Fuling area,together with the Jiannan area of western Hubei and eastern Chongqing are all belong to a gentle slope covered by high-energy deposits.In this paper,a depositional model of oolitic beach has been constructed for the 3rd Member of Feixianguan Formation by sequence stratigraphy and previous description of oolitic beach reservoir,its seismic responses and the data from the Well Jian 35 of the Jiannan area.The oolitic beach reservoir migrates with time and forms a superimposed sequence.With this model,we can follow up the favorable distribution area of oolitic beach reservoir or the＂bright point＂of the 3rd Member of Feixianguan Formation.Upon the basis,using seismic facies and seismic inversion,favorable reservoir and its distribution could be further defined.

关 键 词：川东南涪陵 飞三段 鲕滩储层 层序地层 储层描述 

分 类 号：P588.245[天文地球—岩石学] TE121.34[天文地球—地质学]