API RP 19G9-2015
双气举井的设计 操作 和故障排除（第二版）

Design@ Operation@ and Troubleshooting of Dual Gas-lift Wells (SECOND EDITION)

标准号

API RP 19G9-2015

发布

2015年

发布单位

API - American Petroleum Institute

 

 

适用范围

This document provides recommended practices (RPs) for the selection@ design@ operation@ surveillance@ optimization@ automation@ and troubleshooting of dual gas-lift wells. The purpose of this document is to present RPs@ guidelines@ and tools to help obtain optimum production from dual gas-lift wells. This document also contains practices that should be avoided to minimize problems and inefficiencies that can be associated with ineffective dual gas-lift operations. Compared to single completions@ dual completions typically have more operating problems@ are more difficult to work over@ and can produce less efficiently. It is not the purpose of this document to recommend the practice of dual gas-lift. In some cases@ dual gas-lift is problematic and often ineffective. Often it is difficult or even impossible to effectively produce both completions in a dual well using gas-lift over the long term. Where there are other feasible alternatives to produce dual wells@ they should be considered. However@ many dually completed oil wells should be artificially lifted initially or after reservoir pressures have declined and/or water cuts have increased. In many cases@ the only practical method of artificial lift for these wells is gas-lift. Therefore@ every effort should be made to design and operate dual gas-lift systems as effectively as possible. Annexes to this RP include: a) an overview of dual gas-lift systems@ b) dual gas-lift mandrel spacing designs@ c) dual gas-lift unloading valve design for production pressure operated (PPO) valves@ and d) dual gas-lift practices not recommended.

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