ABSTRACT Drainage gas recovery technology is the main method of gas recovery process in gas field, which has domestically and internationally been the main gas recovery processing measure in later stage of gas field production. In this context, produced water or condensate liquid will not be carried out of pit shaft by natural gas with the gradual drop of gas reservoir pressure and natural gas flow velocity, thus they will remain in pit shaft and form the so-called “gas well gathered liquid”. This fluid severely affects natural gas output and leads to the decline of oil field economic benefits, thus drainage gas recovery measure must be taken to increase gas well or even gas field output. It becomes the primary problem to be solved to select the best drainage gas recovery measure which can maximize gas field benefits and optimize gas well safety.
Cite this paper
Yang, S. , Xu, D. , Liu, L. , Duan, C. and Xiu, L. (2014) Research of Drainage Gas Recovery Technology in Gas Wells. Open Journal of Fluid Dynamics, 4, 154-162. doi: 10.4236/ojfd.2014.42014.
 Lage, A.C.V.M. and Time, R.W. Mechanistic Model for Upward Two-Phase Flow in Annulus. SPE 63127.
 Li, Z.Y., Ma, J.Z. and Liao, Z.C. (2008) Research of Drainage Gas Recovery Technology. Inner Mongolia Petrochemical Industry, 11.
 Zhou, M.Q., Duan, Y.-G., et al. (2010) Research and Application on Drainage Gas Recovery by Gas Well Self-Energy. Journal of Chongqing Technology Institute (Natural Science Edition), 10.
 Wu, Y.T. (2009) The Preference of Drainage Gas Recovery Methods and Safety Assessment of Gas Well with Water Drainage. China University of Petroleum, 4.
 Zheng, X.X. (2008) Drainage Gas Recovery Method Optimization. China University of Petroleum, Beijing.