注水开发工艺技术应用分析

低渗透油藏开发难度极大，主要表现在自然产能很低，甚至没有自然产能，不采用增产措施，根本无法投产，更谈不上正常开发。合理高效地开发低渗透油藏需要建立有效驱替压力系统，这是提高低渗透油气田开发的关键问题。面对这一现状，本文首先研究论述了低渗透油藏在学术上的界定范围、分类以及在我国的分布状况，并介绍了低渗透油藏的地质特征、开发特征以及保证油藏有效开发的注水工艺技术；然后根据注水开发中存在的一系列问题提出了低渗透油藏分层注水开发的可行性，并对目前我国正在应用的分层注水工艺技术进行了介绍；最后本文以长庆油田为例对分层注水工艺技术进行分析并评价其应用效果。

Water flooding technology and its application analysis

The development of low permeability oil reservoirs is extremely difficult, mainly in the natural productivity is very low, or no natural productivity, the measures of increasing production, simply can not put into production, more do not talk to go up to normal development. High efficient development of low permeability reservoir needs to establish effective displacement pressure system, which is to improve the low permeability oil and gas field development the key problems.Faced with this situation, this paper discusses the study of low permeability reservoir in academic on definition, classification and distribution in China, and introduced the low permeability reservoir geological characteristics, development characteristics and reservoir effective development water injection technology of water injection development; then according to a series of problems existing in the present low permeability stratified waterflooding development feasibility, right at present our country is the application of separate-layer water injection technology are introduced; finally taking Changqing Oilfield as an example of separate-layer water injection technology for analysis and evaluation of its application effect.