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作 者:李良川[1] 骆洪梅[1] 马静荣 张杰[2] 郑淑媛[1]
机构地区:[1]冀东油田公司钻采工艺研究院,河北唐山063000 [2]冀东油田公司南堡作业区,河北唐海063200
出 处:《石油钻采工艺》2007年第z1期68-70,共3页Oil Drilling & Production Technology
摘 要:冀东油田高浅北区是以水平井开发为主的常温常压、边底水块状构造常规稠油油藏。由于储层疏松,边底水的长期冲刷造成储层非均质性加重,油藏含水上升快,采出程度低。为探索水平井调剖的可行性及常规定向井与水平井调剖提高采收率优劣,在纵向非均质模型上进行了三维物理模拟研究。通过布置高精度的压差传感器和饱和度探针,对比不同注入方式下压力变化情况与流体在模型中的渗流情况。结果表明,注入参数相同时,水平井调剖、水平井采出提高采收率18.3个百分点,常规定向井调剖、水平井采出提高采收率8.1个百分点。说明在该类油藏,水平井比常规定向井调剖能更好地提高油藏采收率。Ng8 reservoir of high-shallow north block in Jidong Oilfield, primarily exploited by horizontal well, is conventional heavy oil reservoir with normal temperature and pressure and edgy and bottom water clumpy structure. Due to the loose reservoir, edgy and bottom water's long-term scour results in aggregation of the reservoir's heterogeneity, rising of the water content of reservoir, low recovery degree. In order to explore the feasibility of horizontal well profile control and quality of improving recovery rate by profile control of conventional directional well and horizontal well, 3-D physical simulation research on longitudinal non-homogeneous model is done. Pressure change of different injection ways and seepage conditions of fluid in model is compared through arranging high accuracy differential pressure sensor and saturation probe. The result indicated that under the same injection parameter, recovery rate is increased by 18.3% by profile control of horizontal well while is increased by 8.1% by conventional directional well. It indicates that in the reservoir, profile control of horizontal well is better that of conventional directional well to enhance reservoir recovery rate.
关 键 词:边底水驱 调剖 水平井 常规定向井 物理模拟 采收率
分 类 号:TE357[石油与天然气工程—油气田开发工程] TE349
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