?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%2F634%2F&rft.title=Prediction+of+sanding+in+subsurface+hydrocarbon+reservoirs.&rft.creator=Ockendon%2C+H.&rft.creator=Stoykov%2C+S.&rft.creator=Zorawik%2C+T.&rft.creator=Dimova%2C+S.&rft.creator=Georgiev%2C+I.&rft.creator=Kolkovska%2C+N.&rft.creator=Todorov%2C+M.&rft.creator=Vasileva%2C+D.&rft.subject=Energy+and+utilities&rft.subject=Solid+mechanics&rft.description=Sand+production+in+oil+and+gas+wells+can+occur+if+the+fluid+velocity+exceeds+a%0D%0Acertain+value.+Due+to+drilling+operations%2C+the+mechanical+stresses+can+exceed+the+load+bearing+capacity+of+the+rock.+As+the+local+stresses+exceed+certain+level%2C+a+certain+amount+of+rock+is+fractured+into+sand.+Then%2C+the+sand+is+carried+by+the+fluid+through+the+wellbore+depending+on+the+flow+rate.+The+amount+of+the+solids+can+be+less+than+a+few+grams+per+cubic+meter+of+reservoir+fluid+or+an+essential+amount.+In+the+later+case+erosion+of+the+rock+and+removing+sufficient+quantities+of+rock+can+occur.+This+can+produce+subsurface+cavities+which+collapse+and+destroy+the+well.+%0D%0A%0D%0AWhen+sanding+is+unavoidable+it+is+necessary+to+estimate+the+characteristics+of+the+process.+Our+aim+was+to+generate+a+simple+one-dimensional+local+model%2C+which+predicts+the+volume+of+sanding%2C+the+radius+and+the+porosity+of+the+yielded+zone.+Such+model+will+help+the+company+in+the+development+of+complex+3D+models.&rft.date=2013&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%2F634%2F1%2Fp6_ppResearch.pdf&rft.identifier=++Ockendon%2C+H.+and+Stoykov%2C+S.+and+Zorawik%2C+T.+and+Dimova%2C+S.+and+Georgiev%2C+I.+and+Kolkovska%2C+N.+and+Todorov%2C+M.+and+Vasileva%2C+D.++(2013)+Prediction+of+sanding+in+subsurface+hydrocarbon+reservoirs.++%5BStudy+Group+Report%5D+++++