摘要
据29个油气田统计,具有低阻油层特征的探明石油地质储量近1.7×108t,约占目前吉林油田总储量的20%。应用多种分析化验资料,结合沉积、构造背景等石油地质特征综合分析认为,储层束缚水饱和度高形成的导电网络,吸附性黏土矿物含量高形成的阳离子附加导电性,地层水矿化度高形成的离子导电性以及非均质储层复杂的孔隙系统等原因造成电阻率降低是吉林油田低阻油气层的主要形成机理。并明确指出了各油田形成低阻油气层的主要控制因素,为吉林油田低阻油气层的勘探开发提供科学依据。
According to the statistics of 29 oil and gas fields, the OIIP with low resistivity reservoir features reaches 170 million tons, which accounts for about 20% of the total of Jilin Oilfield. Using a wide range of experimental analysis data and combined with the comprehensive analysis of petroleum geological characteristics such as the sedimentary setting and the tectonic setting, low resistivity reservoirs of Jilin Oilfield were formed due to resistivity drop caused by the conductive network developed from the highly irreducible water saturation, the cation extra conductibility because of the high mineral content of adsorbing clay, the ionic conductivity caused by high water salinity and the complex pore system of heterogeneous reservoirs, In addition, the major factors controlling the formation of low resistivity reservoirs in all oilfields are pointed out clearly, providing scientific basis for the exploration and development of low resistivity reservoirs in Jilin Oilfield.
出处
《中国石油勘探》
CAS
2009年第4期29-33,共5页
China Petroleum Exploration
关键词
松辽盆地南部
低阻油气层
形成机理
控制因素
southern Songliao Basin
low resistivity oil and gas reservoir
formation mechanism
controlling factor
