HR: 1340h
AN: H13F-1649    [Abstracts]
TI: Hydrodynamics and Geochemical Modelling of CO2 Injection at the K12B Gas Field
AU: * Audigane, P
EM: p.audigane@brgm.fr
AF: BRGM (French Geological Survey), 3 Avenue Claude Guillemin, BP 36009, Cedex 2, ORLEANS, 45060, France
AU: Oldenburg, C
EM: cmoldenburg@lbl.gov
AF: LBNL (Lawrence Berkeley National Laboratory), University of California, Berkeley, 94720, Berkeley, CA 94720, United States
AU: van der Meer, B
EM: Bert.vanderMeer@tno.nl
AF: TNO (Dutch Geological Survey), Pricetonlaan 6, 3508 TA, Utrecht, 3508, Netherlands
AU: Geel, K
EM: Kees.Geel@tno.nl
AF: TNO (Dutch Geological Survey), Pricetonlaan 6, 3508 TA, Utrecht, 3508, Netherlands
AU: Lions, J
EM: j.lions@brgm.fr
AF: BRGM (French Geological Survey), 3 Avenue Claude Guillemin, BP 36009, Cedex 2, ORLEANS, 45060, France
AU: Gaus, I
EM: i.gaus@brgm.fr
AF: BRGM (French Geological Survey), 3 Avenue Claude Guillemin, BP 36009, Cedex 2, ORLEANS, 45060, France
AU: Robelin, C
EM: c.robelin@brgm.fr
AF: BRGM (French Geological Survey), 3 Avenue Claude Guillemin, BP 36009, Cedex 2, ORLEANS, 45060, France
AU: Durst, P
EM: p.durst@brgm.fr
AF: BRGM (French Geological Survey), 3 Avenue Claude Guillemin, BP 36009, Cedex 2, ORLEANS, 45060, France
AU: Xu, T
EM: Tianfu_Xu@lbl.gov
AF: LBNL (Lawrence Berkeley National Laboratory), University of California, Berkeley, 94720, Berkeley, CA 94720, United States
AB: This paper presents a numerical simulation study of CO2 injection into the nearly depleted gas reservoir at the K12B field, North Sea, selected as a demonstration site for the Offshore Re-injection of CO2 project. Simulations have been carried out using two different codes: TOUGHREACT for characterizing the geochemical fluid-rock interactions that may occur during the injection period (case A), and TOUGH2EOS7C for simulating the CO2 sequestration coupled with enhanced methane production (case B). The reactive transport modelling predict a rather low geochemical reactivity induced by such injection as the gas reservoir contained initially 13% of CO2 in the gas phase and therefore geochemical equilibrium has been established before injection starts. The simulations of the CH4 recovery estimate due to injection predict a short breakthrough time of 60 days and one year for the two producers, respectively. At the end of the 10 years of injection, CO2 remains at 96% under gas phase and structural trapping remains the main process for geological sequestration at the K12B field.
DE: 1009 Geochemical modeling (3610, 8410)
DE: 1011 Thermodynamics (0766, 3611, 8411)
DE: 1012 Reactions and phase equilibria (3612, 8412)
DE: 1832 Groundwater transport
DE: 1847 Modeling
SC: Hydrology [H]
MN: 2007 Fall Meeting