高气液比油井套管气助流举升技术研究

发布时间：2017-12-31 06:22

本文关键词：高气液比油井套管气助流举升技术研究　出处：《长江大学》2017年硕士论文　论文类型：学位论文

【摘要】：在高气液比油井生产过程中,气体的影响会导致油井产量降低。由于气体占据抽油泵大量有效空间而使得抽油泵的泵效降低,抽油系统效率降低,导致油井无法正常生产作业。因此,如何减小气体影响,并加以利用气体能量,对高气液比油井的高效生产是尤为重要的。本文在文献调研的基础上,对常用多相流井筒压力计算方法进行评价分析,针对高气液比条件采用Beggs-Brill计算方法进行油管气液两相流计算,为了生产系统的稳定和设计进行了环空压力计算。井下工具合理应用是减小气体影响最为有效的方法。对不同类型气锚的分气机理和工作原理进行研究,得到各种气锚的适用情况为油井筛选提供依据。气举阀是用于调节井下压力的智能阀,其作用是降低启动压力和排出油套环空的气体用以帮助举升油管中液体。对气举阀机理分析,为助流举升的合理性提供参考。鉴于气液比高的优势,提出了通过先疏后导解决高气液比油井泵效低的方法,称为助流举升技术。分析了助流举升技术提高泵效的机理,提出了高气液比油井套管气助流举升系统设计方法,完善了助流举升技术设计。利用VB 6.0程序设计语言,编制适用于套管气助流举升工艺综合评判程序,并结合实例计算,对各种工作参数进行敏感分析,得出具体高气液比油井的最优助流举升方案。
[Abstract]:In the high gas-liquid ratio of oil production, gas will lead to oil production decreased. Because the gas pump occupies lots of effective space that the pump efficiency of pump is reduced, pumping system efficiency is reduced, resulting in oil production can not be normal production operations. Therefore, how to reduce the impact of gas, and the gas of high energy, liquid high efficient production of oil well is very important. On the basis of literature review, wellbore pressure calculation method of multi phase flow to the commonly used evaluation analysis for high gas-liquid ratio conditions by using Beggs-Brill calculation method for calculation of gas-liquid two-phase flow of oil pipe, in order to stabilize and design of production system are calculated. The reasonable application of annulus pressure the downhole tool is the most effective method for reducing the effect of the gas. The gas and the working principle of different types of gas anchor, get all kinds of applicable conditions for gas anchor Provide the basis for the screening of wells. The gas lift valve is used for intelligent valve to adjust the downhole pressure, its role is to reduce the starting pressure and exhaust gas annulus is used to help lift fluid tubing. Analysis of the gas lift valve mechanism, to provide reference for reasonable flow lifting. Given the high gas-liquid ratio advantage, put forward by first sparse solutions guide high gas-liquid ratio of oil well pump efficiency is low, said flow lifting technology to help. Analyzes the flow lifting mechanism for improving the pumping efficiency, the high gas-liquid ratio in gas well casing flow design method of lifting system, improve the flow lifting technology design. Using VB 6 programming language. Prepare for the casing gas flow lifting technology comprehensive evaluation procedure and example calculation, sensitivity analysis of various parameters, the high gas-liquid ratio optimal oil flow can lift programme.

【学位授予单位】：长江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE931.2

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