底水油藏水平井压水脊物理模拟实验  

PHYSICAL SIMULATION RESEARCHES ON THE WATER CRESTING CONSTRAINT OF THE HORIZONTAL WELLS IN BOTTOM-WATER-DRIVEN OIL RESERVOIR

作　　者：钱川川[1] 刘月田[1] 迟欣宇[1] 周贤[1] 骆飞飞[1] 

机构地区：[1]中国石油大学石油工程教育部重点实验室,北京102249

出　　处：《大庆石油地质与开发》2012年第5期88-92,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项“大型油气田及煤层气开发”项目（2009ZX05009）资助.

摘　　要：水平井技术是开发底水油藏的一项重要技术。采用电子摄像监视技术与流动测试方法，建立水平井宏观大尺度三维物理模拟装置，观察底水油藏水平井开发动态、水脊脊进过程和压水脊水脊形状变化过程。水脊脊起模式为“井底下方底水脊起一底水脊进到井底一边部抬升，水脊形状变缓”。压水脊后水脊脊顶下降，边部抬升，直至形成新的稳定油水界面。而且压水脊前期水脊下降速度较快。压水脊能够降低底水油藏水平井的含水率，提高产油量和底水油藏的最终采收率。通过相似理论利用综合物理模拟实验直接预测实际油藏水脊动态，结合数值模拟研究和油田现场实际情况，建议实际油田关井压水脊时间为3—5a。Horizontal well techniques are one of the important measures for the development of the bottom-water- driven oil reservoir. With the helps of electronically monitoring technology and flow testing methods, a large-size 3D physical simulation macro-model of horizontal well is established to observe the production performances and water cresting process and the changes of the crest configurations. The mode of the water cresting is ＂the water cresting from the beneath of the borehole-bottom water cresting to the bottom of the well-up-rizing form the margins of the water coning-the gentle configuration＂. After suppressing the crest, its top will be lowered, the margins are rose until a new stable oil-water contact will be formed. And moreover the decline is greatly rapid in the beginning. The constraint stated above can reduce the water cut of the bottom-water-driven oil reservoir, enhance oil production and recovery factor. By means of the similarity theory and comprehensive physical simulation experiment, the water cresting performances can be predicted directly. Combining with the simulation study and oilfield practice, it is ad- vised that the well be shut-in for cresting constraint for 3 -5 years.

关 键 词：底水油藏 水平井 压水脊 物理模拟 

分 类 号：TE349[石油与天然气工程—油气田开发工程]