潼南地区须家河组须二段储层预测  

THE RESERVOIR PREDICTION OF T_3x^2 IN TONGNAN AREA

作　　者：张光荣[1] 卢晓敏[1] 钟子川[1] 蒋小光[1] 王欣[2] 

机构地区：[1]中国石油西南油气田分公司勘探开发研究院,四川成都610051 [2]中国石油西南油气田分公司生产运行处,四川成都610051

出　　处：《西南石油大学学报（自然科学版）》2008年第5期77-80,共4页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：西南油气田分公司重点科研课题(20040302-08-02)

摘　　要：潼南地区位于川中—川南过渡带,目前钻探成果充分显示具有良好的含油气前景。针对该区储层具有很强的非均质性,单层厚度薄,低孔隙度,低渗透率,与泥岩速度差异较小,开展储层定量预测存在一定难度,依据地质、地震、测井、试油等资料,从分析须家河组储层地质、地球物理特征入手,研究提出先利用自然伽马反演进行岩性预测,去除泥质后通过速度、孔隙度反演识别有利储层,最后利用双相介质理论进行油气丰度检测,提出了后续勘探目标的首选有利区,经钻探实际检验情况基本吻合。研究表明:在碎屑岩地区采用多井约束地震反演和油气丰度检测,可以较为准确地预测岩性和储层展布,对下步勘探开发有指导意义。Tongnan area is located at a transition region from Central Sichuan to Southern Sichuan Basin.Its exploration result reveals a great hydrocarbon potential.In this area,the reservoir is characterized by heterogeneity,thin single layer,low permeability and porosity,in addition,the seismic wave velocity of the reservoir is the same as that of shale.Therefore,it is a little difficult to predict reservoir quantitatively.In this research,the geological feature and geophysical property are analyzed at first according to data of geology,seismic,well-logging and well testing;and then,the lithology is predicted by means of the natural gamma-ray inversion;thirdly,the effective reservoir is identified by both velocity and porosity inversion after wiping out the shale;finally,hydrocarbon abundance is detected by the dual-phase medium theory in order to provide a favorable prospect.In fact,the result of reservoir prediction is basically consistent with the drilling result.The research shows that the multi-well constrained inversion and the abundance detection should be adopted in clastic rocks to predict the lithological and reservoir distribution with a relatively high accuracy,which guides to a further exploration and development in Tongnan area.

关 键 词：四川盆地 合成记录 反演 储层预测 油气检测 

分 类 号：TE122.2[石油与天然气工程—油气勘探]