(18 ) Simultaneous Flow of Gas and Liquid As Encountered in Well Tubing .

《(18 ) Simultaneous Flow of Gas and Liquid As Encountered in Well Tubing .》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、.)‘—/DI.SimultaneousFlowofGasaidLiquidAsEncounteredinWellTubing”—N.C.J,ROS*KON/NKl/JKE/SHEILLABORATORIUMIMEMBERAIMEDE[FT,TitkNSTHERLeiNDS-I—-ABSTRACThence,maximumpossibleproductionrate,Thepro-cedurefortheselectionoftheoptimumstringhasbeenThepaperdealswithpressuregradientsoccurringin

2、discussedbyGilbert.’Anecessarytoolinthepro-flowingandgas-liftwells,aknowledgeofwhichcanbecedure,however,isaccurateknowledgeofthepressureappliedtothedeterminationofoptimumflow-stringgradjenttobeexpectedforvariousvaluesofthedimensionsandtothedesignofgas-liftinstallations.governingvari

3、ables.Thestudyisbasedonapressure-balanceequationforthepressuregradient,Itappearsthatapressure-gradientAnotherapplicationofpressure-gradientdataliesincorrelationofgeneralvaliditymustessentiallyconsistthefieldofgas-liitpractice:theyprovideameansofoftwoparts-onepartbeingacorrelationfor

4、liquiddeterminingtheoptimumgas-injectionrate,optimumhold-upandtheotherpartbeingoneforwallfriction.injectionpressureandoptimuminjection‘depth.Dimensional.analysisindicatesthatbothliquidhold-upMuchworkhasalreadybeendoneinthestudyofandwallfrictionarerelatedtoninedimerrsion[essthepressu

5、regradientofverticalgas-liquidflow.Poett-groups.ItisshownthatinthefieldofinterestonlymannandCarpenter’presentedapressure-gradientcor-fourgroupsarereallyimportant.Onthebasisofthese,relationbasedonmeasurementsinwells.Thiscorrela-fourgroupsarestrictedexperimentalprogtamcouldtionhtibeer

6、ifoundtoprovideaccuratepredictions,beselectedthatneverthelesscoveredpracticallyallinhigh-pressure“wellsandinhigh-productionwellsforconditionsencounteredinoilwelfs.Thtrexperimentalflowthroughbothtubingandannuli,’”However,whenprogramhasbeencarriedouthaa!aborato~installa-theirmethodisc

7、heckedonIowpressure-lowproductiontion,Threeessentiallydifferentflowregimeswerefound.wellsoronwellswithviscouscrudes,seriousdiscrep-Thepressuregradientsintheseregiousarepresentedanciesarefound.Asweshallseeinthenextsection,intheformofasetofcorrelations.Comparisonofthesethisisduetothef

8、actthattheircorrela