摘要
超前注水作为低渗透油田提高采收率的一种技术方法,已在我国很多油田得到了广泛应用。为了提高低渗透油田探明储量的动用程度及开发效果,根据低渗透油田的地质特点,借鉴国内外油田开发经验,探讨了超前注水技术开发低渗透油田的技术机理、适应的地质条件、措施实施要求以及相关技术参数的确定方法。研究表明:超前注水技术能够尽快建立有效的压力驱替系统,及时补充地层能量;油井投产后,产量较高且稳定,初期递减小;可以保持地层压力,降低因压力下降而造成的储层渗透率伤害,降低油井含水率;提高驱替压力、驱油效率、波及体积,最终提高采收率。
As the technology of improving the recovery ratio, advanced water injection has been applied in many oil fields. In order to increase the producing reserves and development result in the low permeability oilfields, based on their geologic conditions, and using the development experience of oilfields at home and abroad, the technical mechanism, suitable geologic conditions, the demands of measure's applying and determination of relative parameters on the advanced water injection technique were discussed. The research results showed that the technology of advanced water injection could quickly establish effective pressure displacement system, and timely supplement the stratum's energy. Once it was used in the oilfields, the production was high and stable, the declining rate was low, and it could keep the stratum pressure and reduce the damage of the permeability caused by the decline of the pressure. It also could improve the displacement pressure, the oil displacement efficiency, the swept volume, and finally enhance the recovery efficiency.
出处
《钻采工艺》
CAS
北大核心
2008年第4期65-67,共3页
Drilling & Production Technology
基金
国家重点基础研究发展规划(973)项目(2003CB214600)资助
关键词
超前注水
技术机理
注水时间
单井产量
低渗透油田
advance water injection, technical mechanism, water injection time, single well producing rate, low permeability oilfield
