摘要
柱塞气举是利用柱塞在油管中气体和液体之间形成固体界面,减少气体窜流和液体回落,从而提高举升效率的技术。生产制度合理性直接决定气井柱塞气举排液效果,现场常用制度优化法、时间优化法、压力优化法等方法优化生产制度。其中制度优化法存在耗费时间长、无法达到最优化问题;时间优化法、压力优化法均需结合地面集输工艺,在综合分析计算套管压力、积液高度、关井时间及柱塞上行速度等参数基础上,通过现场运行情况进行微调,存在计算过程复杂、误差大及优化效率低等缺点。通过合理划分柱塞运行阶段,分析优化阶段运行参数,总结提炼出了优化柱塞气举生产制度各阶段载荷因数计算,现场应用取得较好的效果。
Plunger gas lift is one technology which can raise lift efficiency by using the solid interface formed through a plunger between gas and liquid in pipeline to reduce gas channeling and liquid falling back. A rational production system determines directly the drainage effect of plunger gas lift. Three common methods such as system, time and pressure optimization ones are used in fields to optimize production system. However, the first method has the problem of time consuming; and the others have disadvantages of complicated calculation, large error, and low efficiency, because they demand the technology of gathering and transportation, and the comprehensive analysis and calculation of casing pressure, liquid-loading height, shut-in time, and plunger upward speed for fine adjustment. Based on reasonably dividing the operational stages of plunger,analyzing and optimizing the operation parameters, we summarize an optimization method for loading-factor calculation in every stage of production system of plunger gas lift. And good results of field application have been achieved.
出处
《天然气勘探与开发》
2016年第4期40-43,共4页
Natural Gas Exploration and Development
关键词
产水井
柱塞气举
生产制度
阶段分析
载荷因数
制度优化
water-producing well
plunger gas lift
production system
stage analysis
loading factor
system optimization
