四川盆地白云岩储层及白云岩化作用  

Sichuan Basin,Dolomite and Dolomitization

作　　者：孟浩[1] 汪益宁 滕蔓[3] 

机构地区：[1]中国石化江汉油田分公司清河采油厂,寿光262714 [2]北京华油地智能源工程技术中心,北京100083 [3]中海油田服务股份有限公司油田生产事业部油藏技术所,廊坊065201

出　　处：《科学技术与工程》2011年第32期8015-8017,共3页Science Technology and Engineering

摘　　要：四川盆地东北部长兴-飞仙关组是近年来我国发现的重要天然气储集层,可采储量已达到5 000×108 m3左右,川东北已成为我国油气的重点勘探地区之一。本次通过对其白云岩储层微量元素分析,来探讨其白云岩储层成因。长兴-飞仙关组Sr、Mn、Fe元素含量分别位于80～500μg/g、7～90μg/g、0.6%～1.4%之间,平均值分别为140μg/g、60μg/g、0.7%,具有高Sr、低Fe、Mn的性质。一方面可证明沉积、成岩期没有淡水的参与以外,同时也显示了白云岩成因的指示信息。因此可排除了混合水白云化成因,支持准同生+埋藏白云化作用机制。Xing Northeastern Sichuan Basin-Feixianguan is found in China in recent years.An important gas reservoirs,recoverable reserves have reached about 5 000×108 m3,Northeast Sichuan has become the focus of China′s oil and gas exploration areas.The trace element analysis by its dolomite,dolomite to explore its causes.Changxing-Feixianguan Sr,Mn,Fe element content are located at 80~500 μg / g,7~90 μg / g,0.6%~1.4% between the average values of 140 μg / g,60 μg / g,0.7%,high Sr,low Fe,Mn nature.They can prove that deposition,diagenetic no involvement other than fresh water,but also shows the origin of dolomite instructions.It can be ruled out because of the mixed water into clouds,to support prospective students ＋ with burial dolomitization mechanism.

关 键 词：四川盆地 白云岩 储层 作用 

分 类 号：TE132.2[石油与天然气工程—油气勘探]