ABSTRACT

As the earth climate changes many methods are pro-

posed to mitigate the emission of CO

to the atmos-

phere. On one side CO

is injected into underground

for only sequestration or to enhance oil/gas recovery

(EOR/EGR). On the other side renewable energy

sources like an Enhanced Geothermal System (EGS)

is put to use. In all these applications coupled

THMC geo-processes play a significant role. Up to

now a number of computer codes have been devel-

oped to simulate these processes. One of the most

important codes is TOUGH-FLAC developed by

LBNL. Details of this code are found in Rutqvist et

al. (2002), Rutqvist & Tsang (2003). This paper

presents integration of TOUGHREACT and

FLAC3D based on TOUGH-FLAC with additional

implementation of new THMC coupling concept.

Firstly we present our concept, validate the code

with one example using the code TOUGH-FLAC

from the literature and then the new code is applied

to analysis of THMC coupled behaviour of a saline

aquifer in North German Basin subjected to CO