埕北古7潜山太古界油气藏流体类型识别  

Reservoir fluid type identification for Archaeozoic reservoir in Chengbeigu 7 buried hills

作　　者：常涧峰[1,2] 徐耀东[2] 田同辉[2] 李秀华[2] 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266555 [2]中国石化股份胜利油田分公司地质科学研究院,山东东营257015

出　　处：《油气地质与采收率》2012年第4期21-23,112,共3页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"大型油气田及煤层气开发"之"复杂裂缝性碳酸盐岩油藏开发关键技术"(2011ZX05014-004)

摘　　要：油气藏的流体类型是计算油气储量、选择开发方式、制定技术政策的关键,因此查清流体类型对油气藏开发具有重要的意义。以埕北古7潜山太古界为研究目标,依据埕北古7井流体组分分析结果和流体相态实验为基础,利用方框图法、C2+含量判别法、油气藏流体三元组成三角图法等经验统计方法和流体相态分析方法对埕北古7潜山的油气藏流体类型进行识别。结果表明,原始地层条件下,埕北古7潜山太古界油气藏流体呈油气两相状态,油气藏顶部为凝析气顶,底部为油环。结合地质研究成果可知,油环面积远大于凝析气顶面积,因此确定埕北古7潜山太古界油气藏类型为以油为主的凝析气顶油藏。The identification of reservoir fluid types is key to the calculation of oil and gas reserves, optimization of the development way, and decision of the key technology policy. So how to make clear the underground fluid types is of vital significance for reservoir development. Based on the fluid component analysis result and fluid phase behavior experiment of the well flow, and using a variety of statistical methods and fluid phase analysis method, we identify the reservoir fluid type of the Chengbeigu 7 buried hills. The results show that the reservoir fluid type of the Chengbeigu 7 buried hills is represented as the oil gas two-phase state in the original formation conditions. Combined with geologic research results, the reservoir fluid types of Chengbeigu 7 buried hills is condensate gas cap reservoir.

关 键 词：油气藏类型 凝析气藏 气顶 油环 流体相态 

分 类 号：TE311[石油与天然气工程—油气田开发工程]