陡坡带砂砾岩扇体油气成藏特征——以济阳坳陷为例

Reservoir characteristics of glutenite fan at steep slope belt:An example of Jiyang depression

1. 石油大学石油资源科学系,山东东营257061;2. 胜利油田有限公司地质科学研究院,山东东营257015

1. Department of Petroleum Resources Science, University of Petroleum, Dongying 257061, China;2. Geological Scientific Research Institute, Shengli Oilfield Limited Company, Dongying 257015, China

由于陆相断陷湖盆陡坡带特殊的构造背景,其沉积地层中各种成因的砂砾岩扇体极为发育,是油气勘探的重要目标。以济阳坳陷为例,按成因把陡坡带分为断阶型陡坡带和单断型陡坡带2种类型,并研究了不同类型陡坡带砂砾岩扇体的类型,油气控制因素及分布规律。在此基础上,总结了一套以综合地质分析为基础,以地震、测井等新技术为手段的陡坡带砂砾岩扇体综合勘探方法,对类似陆相断陷湖盆陡坡带砂砾岩扇体的勘探,具有重要的指导意义。

Glutenite fans are rich at the steep slope belt of terrestrial faulted lake basin due to its special structural setting. These fans are targets of hydrocarbon exploration. This paper pointed out that the steep slope belt could be divided into two types, terrace fault and single fault, according to the genesis of the steep slope belt. The types of glutenite fans in different steep slope belts and factors controlling hydrocarbon concentration and distribution were studied. A suite of methods, which combine seismic, logging and geological analysis, were developed. The methods can be used for hydrocarbon exploration in basins with similar geological setting.