| Abstract |
When building a simulation model, the practical workflows are key to calibrate input data efficiently and to analyze results precisely. In that perspective, Storengy supported the adaptation of a proved pre- and post-processing oil & gas commercial solution, RE-Studio, to TOUGH2. This interface comprises several modules aiming at accompanying a TOUGH user all along the phases of building a proper dataset, and displaying the TOUGH2 obtained results in 2D or 3D viewers. An advanced text editor allows users for improving and fastening the dataset building and writing with keywords while easing the possible dataset errors recognition. In order to cope with Storengy needs to model geothermal reservoirs, specific functionalities have been developed to convert geological models built with Petrel into TOUGH formatted files. The grids thus formatted can then be displayed in the integrated 3D viewer, and static as well as dynamic properties resulting from a simulation can be visualized without requiring any additional software. The 3D Viewer has also been recently improved to handle dual-medium grids. A 2D viewer is also included, allowing for instance displaying time dependent simulation results along with properties versus depths plots. A close interaction exists between 2D and 3D viewers: cells or groups of cells can be selected in the 3D window and their properties displayed in 2D plots, making the simulation results analysis very flexible for the user. In order to facilitate the writing of well controls, especially for wells split between several grid cells, a tool has been developed to convert production data into a formatted GENER keyword. This was inspired from tools from the oil and gas industry and is aiming at producing input data for history matching in a more efficient way while making the models more realistic. The quality of history match is assessed by defining error functions through a very flexible language in the Project Manager. Errors between observed and simulated values can be evaluated at specific dates, or computed over all the simulation timeline following least square mean formula. Once computed, function results can be plotted in various formats like histograms or cross plots to see the progress of history match during a project. This tool is currently still under development. It is expected to be able to handle local grid refinements (LGR) in Q1 2019. It has been adapted for a use with TOUGH2 / TOUGHREACT in a first place, and has been successfully tested on TOUGH3 as well. The model used for the benchmarking is a EOS1 case, but specific keywords required by other EOS can be implemented on demand. A case study involving tracer tracking on a geothermal doublet in a high enthalpy reservoir was used for reference, and successfully matched. |