ÇAĞRILI KONUŞMALAR / KEYNOTES Invited Speeches ... - TPJD

A Field Application with Liquid Surfactant for Production Optimization
Özge Sunal
Transatlantıc Turkey Ltd.
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.
Keywords : Production Optimization, Surfactant Injection
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