树式成藏模式在断块油藏开发中的应用——以东濮凹陷西斜坡带H19断块为例  

Application of tree-type hydrocarbon accumulation pattern in fault block oil reservoir development——By taking H-19 fault block of western slope belt of Dongpu sag as an example

作　　者：钟张起[1,2] 刘振旺[2] 侯读杰[1] 冯高城 王鹏忠[2] 

机构地区：[1]中国地质大学(北京)能源学院 [2]中国石化中原油田分公司采油五厂 [3]中海石油能源发展股份有限公司非常规技术研究院

出　　处：《石油地质与工程》2015年第6期89-91,94,共4页Petroleum Geology and Engineering

基　　金："十二五"国家科技重大专项"东濮凹陷油气富集规律与增储领域"(2011ZX05006-004-07)

摘　　要：针对油田开发后期出现油井产状分布复杂的问题,在分析油藏地质异常和非均质的基础上,利用东濮凹陷西斜坡带油藏的地质开发资料,提出树式充注和成藏模式。树式成藏模式可以合理解释高部位是水层、低部位是油层的现象,能够更好寻找隐蔽油藏。油气在一定通道中进行充注、混合、富集过程,通道外的空间没有油气聚集。东濮凹陷西斜坡带H19断块为由8条断层和7个小断块组成的复杂断块,在大尺度上,油气在构造较高部位富集成藏;在小尺度上,油气分布更为复杂,同一断块内部相邻区域内存在不少油层厚度正异常区和负异常区。树式成藏模式导致油气分布异常,在油藏开发后期更为突出,油水层判别难度增加,常用的判别方法主要有储层侵入特性法,电阻率-自然电位组合法,电阻增大率法,电阻率-孔隙度组合法。Aiming at the complex well occurrence distribution problem at the late period of oilfield development,based on the analysis of reservoir geological anomalies and inhomogeneous,by using the geological and development data of oil reservoirs in western slope belt of Dongpu sag,tree-type infilling and hydrocarbon accumulation pattern have been put forward.The tree-type hydrocarbon accumulation pattern can be explained as the phenomenon of water layers at the top and oil layers at the bottom,and it is good for searching for hidden reservoirs.Hydrocarbon can be filled,mixed andenriched in a certain channel and there is no hydrocarbon accumulation outside the channel.H-19 block of western slope belt of Dongpu sag has 8 faults and 7 complex faulted-blocks.On a large scale,oil and gas reservoirs are accumulated in the structural high part.On a small scale,oil and gas distribution is more complicated.There are more abnormal areas and negative anomaly areas among the adjacent region of the same faulted-block.The tree type accumulation pattern may result in abnormal distribution of oil and gas,and it is more serious at the late reservoir development stage and the difficulty for identifying oil-water layers can be increased.The common identification method has the characteristic of reservoir inclusion.

关 键 词：东濮凹陷 断块油藏 地质异常 非均质性 充注模式 成藏模式 

分 类 号：TE347[石油与天然气工程—油气田开发工程]