?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F678%2F&rft.title=Smoothing+of+Well+Rates+in+Subsurface+Hydrocarbon+Reservoir+Simulators&rft.creator=Kounchev%2C+O.&rft.creator=Todorov%2C+M.&rft.creator=Georgieva%2C+D.&rft.creator=Simeonov%2C+N.&rft.creator=Kolev%2C+V.&rft.subject=Energy+and+utilities&rft.subject=Fluids&rft.description=A+common+problem+in+reservoir+simulators+is+the+history+matching+problem%2C+where+a+number+of+wells+are+operated+at+a+prescribed+flow+rate%2C+measured+by+the+operator.+The+data+provides+input+to+a+simulator+which+then+has+to+match+various+other+measured+quantities%2C+such+as+pressure+drop+at+wells%2C+movement+of+saturation+fronts%2C+water+break-out+and+other.+A+common+problem+is+that+the+input+data+is+very+rough+and+if+input+directly+would+cause+considerable+numerical+difficulties%2C+such+as+excessive+Newton+iterations+to+converge+or+excessively+small+time-steps.&rft.date=2014&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F678%2F1%2FESGI_104_P3.pdf&rft.identifier=++Kounchev%2C+O.+and+Todorov%2C+M.+and+Georgieva%2C+D.+and+Simeonov%2C+N.+and+Kolev%2C+V.++(2014)+Smoothing+of+Well+Rates+in+Subsurface+Hydrocarbon+Reservoir+Simulators.++%5BStudy+Group+Report%5D+++++