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Abstract

Liquid loading in gas wells is a major concern that causes reduced production and shortening of the well life. Liquid loading arises when a gas well is unable to remove the produced liquids from the wellbore. Gas rates below the critical rate are inefficient to remove the liquid and lead to liquid accumulation in the bottomhole which eventually might kill the well. There are various methods to deliquify gas wells, each of which can be implemented as the optimum method in different cases based on the well specifications. Most of these methods can be unfeasible for highly depleted wells with low reservoir pressures and low flow rates. This study introduces a new field application of deliquification of a gas well in Thrace region in Turkey by continuous liquid surfactant injection down the well. The study focuses on increasing production and recovery from a low pressure gas well with water buildup issue. Laboratory tests have been conducted with brine samples taken from the well to identify the best performing foamer product. The concentration and dosage of the foamer have been determined based on the results of well modeling study. This project is of great importance due to the fact that it is the first application in Turkey in which continuous liquid surfactant injection is performed to unload the accumulated liquid in a gas well. It is an ongoing study; the results of the application will be presented in the paper.

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/content/papers/10.3997/2214-4609-pdb.377.134
2011-05-11
2024-03-28
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