摘要
从断裂带附近流体性质出发,深入分析了东濮凹陷兰聊断裂带流体活动特征及其成藏过程。综合分析原油和天然气物性、地层水矿化度、天然气成因类型、稀有气体氦同位素等在平面上和垂向上的变化特征,充分说明了兰聊断裂带中的流体活动。分析认为,深部石炭、二叠系煤系地层生成的煤型气沿着兰聊断裂及其次生断裂系幕式充注至沙三段和沙二下亚段储层中,在构造高部位形成聚集,并与从杜寨断层或构造翼部运移上来的下第三系油型气发生混合形成混合气带,不同成因类型的天然气呈明显的“条带状”分布。
Based on the fluid properties in the fault zone area,the fluid flow characteristics and pool-forming process along Lanliao fault zone in Dongpu Depression are thoroughly analyzed.With Synthetic analysis of the alteration feature in vertical and horizontal of crude oil and natural gas physical properties,formation water salinity,natural gas genetic types and helium-isotope,the fluid flow along Lanliao fault zone is well proved.The result shows that,the coal-formed gas generated from Carboniferous-Permian coal-bearing formation flew along Lanliao fault and its related fault system,which episodic charged into reservoirs of the third member and lower second member of Shahejie Formation,and accumulated in the structural high place.The coal-formed gas mixed with oil-type gas generated from Eogene which migrated from Duzhai fault and the structural limb area,and finally formed a girdle of mixture gas.As a result,gas of different genetic types distribute apparently like a girdle shape.
出处
《断块油气田》
CAS
2007年第2期11-13,共3页
Fault-Block Oil & Gas Field
关键词
断裂带
流体活动
流体性质
成因类型
东濮凹陷
fault zone,fluid flow,fluid property,genetic types,Dongpu depression.
