特高含水期水驱“二三结合”挖潜方式  

＂SECONDARY AND TERTIARY RECOVERY COMBINATION＂ POTENTIAL-TAPPING METHOD AT EXTRA HIGH WATER CUT PERIOD OF WATERFLOODING

作　　者：王伟[1] 王英斌[1] 

机构地区：[1]大庆油田有限责任公司第六采油厂,黑龙江大庆163114

出　　处：《大庆石油地质与开发》2012年第6期64-68,共5页Petroleum Geology & Oilfield Development in Daqing

基　　金：大庆油田有限责任公司“十一五”科技项目“喇嘛甸油田萨Ⅲ4-10油层“二三结合”水驱挖潜工业性矿场试验”（DPQ-2006·YC-SY-002）.

摘　　要：喇嘛甸油田进入特高含水开发期已经十余年，2011年水驱综合含水为94．83％。针对水驱含水不断上升、产油量递减加快、无效低效注采循环严重的形势，利用储层精细解剖研究成果，在搞清剩余油分布特征基础上，利用提前完钻的二类油层三次采油加密井网，通过选择性射孔，建立新的驱动体系，对厚油层内部剩余油富集的结构单元强化水驱二次采油，有效改善了水驱开发效果。总结出在特高含水开发期关于射孔、调整及精细注水等方面的水驱二次开发方法，对类似油层水驱挖潜有指导意义。Lamadian Oilfield at extra high waterflooded period has been developed for more than 10 years, the comprehensive water cut in 2011 for water flooding reached 94. 83%. For the series situations such as gradually in- creasing water cut, accelerated the decline of oil production and ineffective and low-efficiency injection-production cycles, using the study achievements of the fine reservoir characterization, on the basis of making clear of the re- mained oil distribution features, with the help of the tertiary recovery well pattern of the previously-drilled second oil reservoirs and the selective perforation, a new driving system is established, thus the developed results of the water flooding for the structural units accumulated and enriched by the remained oil in thick reservoirs and en- hanced second water flooding are improved greatly and effectively. The second water flooding methods for perfora- tion selection, adjustment, fine water injection and so on at extra high water cut period are summarized. All these achievements possess a certain guiding significance for the potential tapping of this kind of oil reservoirs.

关 键 词：特高含水开发期 剩余油 三次采油加密井网 选择性射孔 水驱二次开发 

分 类 号：TE341[石油与天然气工程—油气田开发工程]