塔里木油田改善注气开发效果的关键问题  

A brief discussion on some scientific issues to improve oil displacement during gas injection, Tarim oilfield

作　　者：杨胜来[1] 陈浩[1] 冯积累[2] 周代余[2] 李芳芳[1] 章星[1] 

机构地区：[1]中国石油大学(北京)石油工程学院,北京102249 [2]中国石油塔里木油田分公司,新疆库尔勒841000

出　　处：《油气地质与采收率》2014年第1期40-44,113,共5页Petroleum Geology and Recovery Efficiency

基　　金：国家自然科学基金项目"超深层油气藏岩石物性垂向分布规律及渗流特征研究"(50874114);国家重点基础研究发展"973"计划"二氧化碳减排;储存和资源化利用的基础研究"(2011CB707300)

摘　　要：针对塔里木油田的油藏地质特征及开发现状,面对部分油藏已进入高含水、高采出程度阶段的形势,为了控制产量递减速度、实现原油稳产增产,提出了注气提高油田采收率的技术思路。分析了目前注气驱油技术及应用中可能遇到的问题,从改善注气开发效果的角度出发,探讨了气体类型及试验区选区、驱替类型及注入方式、气窜控制、注气配套技术、利用储气库理念开发油藏等问题。建议选择烃气作为塔里木油田的注气气源、选择条件适中的轻质油油藏进行试验,获得技术突破后,再逐步向低渗透油藏推广。根据具体区块具体分析原则,分别开展垂向驱、水平驱(面积驱)试验和气窜控制技术研究,在气水交替注入方面应进行注入能力分析及室内效果评价;在注气试验实施过程中,开展注气、采气平面和垂向监测工作,掌握注气过程中的气体运移规律。从注气技术的经济性方面考虑,建议引入储气库理念开发油藏,把注气采油作为临时储气阶段,待采油完成后,再将天然气产出到输气管网。In response to the energy and economy requirement of China, the high and stable production of Tarim oilfield is directly con-nected to the oil supply and economic growth. So far, some blocks have entered a new development stage with high water cut and highoil recovery. Finding suitable substitute technique is of important significance for slowing down the production rate decline, and main-taining the stable production of crude oil, and reducing our dependence on imported oil. The Tarim oilfield is rich in natural gas, howev-er, it has disadvantages, such as high pressure high temperature, high salinity and high content of calcium and magnesium. Consequent-ly, based on the geological features of reservoirs and development status, the development situation of Tarim oilfield now facing is ana-lyzed, and technical ideas of gas injection to enhance oil recovery are proposed. In view of the existing problems encountered in thestudy and applications of gas injection, and for the improvement of crude oil displacement performance, six suggestions, such as optimi-zation of gas source and target block, preparation of gas injection, selection of injection types and methods, physical and numerical sim-ulation and gas injection formulating, field test and matching techniques, and gas storage theory are introduced to develop oil reservoirs.

关 键 词：注气驱驱替类型 气窜控制 注入能力 储气库 塔里木油田 

分 类 号：TE34[石油与天然气工程—油气田开发工程]