摘要
苏里格气田西区气藏产水严重,气水分布规律及其形成机理认识不清,制约了气田滚动开发进程。利用钻井、测井、录井、生产测试资料进行综合研究,明确了气水分布规律及其形成机理,建立了气水成因演化模式。研究表明:①该区气水分布呈"渐变互补"特征,相对富水区在西北部;②控制气水分布的主要因素为烃源岩、储集层物性及构造等,地层水主要分布在烃源岩欠发育区、物性不佳区和连通体内构造低部位;③烃源岩对气水分布起关键作用,烃源岩成熟度低值区地层水发育、高值区天然气富集。该研究可直接指导研究区开发选区、选井工作。
Serious water production and the confusion about the distribution regularity and formation mechanism of gas and water affect the progressive development in the western area of Sulige gas field. Making use of drilling, logging, and testing data, this comprehensive study determines the gas-water distribution regularity and formation mechanism, and establishes the evolution modes of gas-water distribution. The results show that, （1） the gas-water distribution appears complementarily, and relatively water-rich area is located in the northwest; （2） source rock, reservoir physical property and structure are the key controlling factors of gas-water distribution, and formation water is distributed in areas with less developed source rocks, areas of poor properties, and structural lows within connecting bodies; （3） source rocks play a key role in controlling the distribution of gas and water, source area of low maturity is rich in formation water, while source area of high maturity is rich in gas. This research gives direction for favorable areas and well site selection in the orogressive development of the gas field.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2012年第5期524-529,共6页
Petroleum Exploration and Development
基金
国家科技重大专项"复杂油气田地质与提高采收率技术"(2008ZX05009-004-03)
中国石油大学(北京)基金项目(KYJJ2012-02-05)
关键词
鄂尔多斯盆地
苏里格气田
气水分布规律
成因模式
地层水
Ordos Basin
Sulige gas field
gas and water distribution regularity
genetic mode
formation water
