Guides to Flowing Gradient Survey Data from API RP 11 V5

The purpose of this article is to present rough guides, or “rules of thumb”, to consider when preparing a Flowing Gradient Survey job program for gas lifted well. These recommendations will guide Production Engineers when preparing the survey instruments, planning the survey stop depths and times, when planning to obtain the bottomhole pressure data, as well as when preparing the job program for running pressure & temperature survey.

 

Preparing the survey instruments:

  • Run sinker bars as needed to overcome pressure surges when entering the wellhead from the lubricator.
  • Sampling rate should be at 30-second intervals.
  • Calibrate the electronic gauge with its software prior to each use.

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Updated list of API and ISO Standards for Gas Lift

In this article, the last updated list of API and ISO standards for Gas Lift is presented. These standards can be considered as reference documents as well as a basis for training classes in the subject of Gas Lift.

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Gas lifted well: Operations & unloading process

Gas lift operations and unloading procedure are described in the following demonstration video:

In order to further explain all these aspects and more simplify the process, gas lift operations have been described in the next paragraphs:

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CO2 Tracer Technology for Surveillance of Gas Lifted Wells

CO2 tracer technology is a low cost effective method to quikly and reliably check if a gas lifted well is producing at its optimum conditions.

Actually, the CO2 tracer survey would detect the operating lift depth, multiple points of injection, tubing leaks.

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