<../index.html> SPE Comparative Solution Project ------------------------------------------------------------------------ questions and updates *faq**index ** ** *model 1* *model 2* <#cross-section> Cross-sectional problem - pore vols/frequency? <#cross-section> <#blockcgrid> Block centred grid? <#blockcgrid> <#rockcomp> Rock Compressibility? <#rockcomp> <#depth> Depth 12,000 ft - top or bottom? <#depth> <#filling> Filling convention for datasets? <#filling> <#radius> Well radius? <#radius> <#model2> Error in Model 2 permeabilities <#radius> * ------------------------------------------------------------------------ * Q* In the model 1 (the *cross-sectional problem*) how many pore volumes of injection do you want reported and on what frequency? *A* We'd like the problem run to 7560 days, which is almost 3pv, and a reporting time of every 180 days. *faq**index* <#top> * Q* Is the *depth of 12,000 ft* in model 2 the top or the bottom of the formation or somewhere in between? *A* 12,000 ft is the depth to the top of model 2. * faq**index* <#top> * Q* The second model does not have a *block centred grid*. This will be a problem with some reservoir simulators. Having the producers on the corners is not a problem, but having the injector directly in the centre of the model is with the grid you propose. *A* This depends on whether you upscale to an even or an odd numbered coarse grid. There's just no way round this with upscaling on regular grids. Options to consider are: tensor product grids, where you have variable dz, dy on the coarse grid, and local grid refinement. *faq**index* <#top> * Q* What is the* filling convention* for the datasets in model 2? *A* The filling convention is top to bottom. *faq**index* <#top> * Q* What *well radius* should I use in model 2? *A* The well radius is 5 inches. *faq**index* <#top> * Q* What is the *rock compressibility* for model 1? *A* We used 6.0e-5/bar, or 4.138e-6/psi. * faq**index* <#top> *Update* There is an* error in the fine grid porosity and permeability file for model 2*. The y, z permeabilities for k = 35, 70 duplicate those for k = 1, 35. Please download the corrected file <../datasets/set02.htm#case2a>. *faq**index* <#top> 09/05/00 home <../index.html> DATASETS faq <#top> contact <../index.html#contact> first <../datasets/set01.htm> second <../datasets/set02.htm>