Forward and reverse combustion linking in underground coal gasification

In the present study.. two techniques used for wells linking in Underground Coal Gasification (UCG), namely, Reverse Combustion Linking (RCL) and Forward Combustion Linking (FCL) are compared. Linking time in FCL is estimated using two-dimensional model and assuming stability of the combustion front. Effects of instabilities during FCL are discussed. (C) 2007 Elsevier Ltd. All rights reserved.