![]() ![]() The simulation results enabled us to quantitatively compare both reservoir simulators based on current operational data considering the long-term effects of CO 2 storage including CO 2 dissolution in the formation fluid. ![]() Based on this revised reservoir model of the Stuttgart formation, numerical simulations using the TOUGH 2-MP/ECO 2N and Schlumberger Information Services (SIS) ECLIPSE 100 black-oil simulators were undertaken in order to evaluate the long-term (up to 10,000 years) migration of the injected CO 2 (about 57,000 t at the end of 2011) and the development of reservoir pressure over time. Using a sequential Gaussian simulator for the distribution of total and effective porosities and an empiric porosity-permeability relationship based on site and literature data available, the structural model was parameterized. According to the revised seismic analysis, the facies modelling to simulate the channel and floodplain facies distribution at Ketzin was updated. The updated geological model (model size: 5 km x 5 km) shows a horizontal discretization of 5 x 5 m and consists of three vertical zones, with the finest discretization at the top (0.5 m). Recently, a re-evaluation of the seismic 3D data enabled a refinement of the structural site model and the implementation of the fault system present at the top of the Ketzin anticline. Geological modelling and dynamic flow simulations were conducted at the Ketzin pilot site showing a good agreement of history matched geological models with CO 2 arrival times in both observation wells and timely development of reservoir pressure determined in the injection well. This report complements the reports i TOUGH 2 User's Guide, i TOUGH 2 Command Referecne, and the collection of tutorial examples in i TOUGH 2 Sample Problems.« lessĬomparison of long-term numerical simulations at the Ketzin pilot site using the Schlumberger ECLIPSE and LBNL TOUGH 2 simulators They enhance the functionality, flexibilitu, and eas-of-use of the forward simulator. However, a number ofmore » modifications have been made as described in this report. As a result, standard TOUGH 2 input files can be used in i TOUGH 2, and identical results are obtained if i TOUGH 2 is run in forward mode. Most code modifications are editorial and do not affect the simulation results. The core of i TOUGH 2 contains slightly modified versions of TOUGH 2 modules. It is based on the TOUGH 2 simulator for non-isothermal multiphase, multicomponent flow and transport in fractured and porous media. I TOUGH 2 is a program for parameter estimation, sensitivity analysis, and uncertainty propagation analysis. Enhancements to the TOUGH 2 Simulator as Implemented in i TOUGH 2 ![]()
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