摘要
为了研究斜坡区油气分布规律,在斜坡区断砂配置侧向输导油气条件及路径构成研究基础上,通过确定砂体输导油气区油气势能等值线法线的汇聚线与断裂转换带、断裂不封闭部位的叠合关系,建立了一套侧向输导油气路径的预测方法,并应用于渤海湾盆地冀中坳陷霸县凹陷文安斜坡区沙二段的侧向输导油气路径的预测中。结果表明:文安斜坡区沙二段断砂配置侧向输导油气路径仅分布在其西部的中南,北部、中部的侧向输导油气路径较南部发育;油气运移路径均是从西至东,延伸距离相对较短,主要由砂体输导油气区油气势能等值线法线汇聚线与断裂转换带构成,少数由砂体输导油气区油气势能等值线法线汇聚线与断裂不封闭部位构成。预测侧向输导油气路径上或附近有利于油气聚集成藏,与沙二段已发现的油气分布相吻合,表明该方法可行。
In order to study the distribution law of the oil and gas in the slope area,on the basis of the researches on the petroleum lateral transporting conditions and path factors along the fracture-sand configuration in the slope area,a set of the predicting method for the lateral transporting path of the oil and gas along the fracture-sand configuration was established by determining the overlaying relationships between the convergent line of the petroleum momentum-energy normal line of the sandbody in the oil-gas transporting area and the fault transition belt and nonsealed parts of the fracture. And then the method was applied in the prediction of the hydrocarbon lateral transporting path along the fracture-sand configuration of Member Es2 in Wen＇an Slope of Baxian Sag of Jizhong Depression in Bohai Bay Basin. The achievements show that the lateral transporting paths of the oil and gas along the fracturesand configuration in Member Es2 of Wen＇an Slope are only distributed in the central and southern regions of the west part,and the oil and gas transporting paths along the fracture-sand configuration in the north and central partsare more well developed than those in the south; the oil and gas migrating paths are spread from west to east and the extended distance is relatively shorter,mainly composed of the convergent line of the petroleum momentum-energy normal line of the sandbody in the oil-gas transporting area and the fault transition belt,while less paths are made of the convergent line and the non-closed parts of the fracture. The predicted results show that the oil and gas are advantageous to accumulate along or near the lateral transporting path and the results are consistent with the petroleum distribution discovered in Member Es2,all the achievements show that the method is feasible.
作者
曾立智
ZENG Lizhi(No. 2 Oil Production Plant of Daqing Oilfield Co Ltd., Daqing 163461, China)
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2018年第3期10-15,共6页
Petroleum Geology & Oilfield Development in Daqing
基金
国家自然科学基金项目"油源断裂转换带优势输导油气条件研究"(41372153)
关键词
斜坡区
断砂配置
输导路径
预测方法
断裂转换带
汇聚线
slope area
fracture-sand configuration
transporting path
predicting method
tracture converting belt
convergent/concourse line
