支撑剂评价备课讲稿.ppt

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1、支撑剂评价TheshapeofproppantImpactonthenumber支撑剂形状APIRP60,FromStratigraphyandSedimentaion,KrumbeinandSloss多数陶粒多数砂一些劣质陶粒系数比较Stim-LabPredK6.57,Feb2002,煤层气井,1000psi应力,100F,50%冻胶伤害率改善58%改善33%CrushedParticleSizeDistributionNotJust%CrushImpactonthenumberAPI

2、RP60CrushTestProceduresSievematerialwithinspecifiedrange(e.g.-20/+40).Fillcrushcelltoaconcentrationof1.22ccpersq.cmofproppant.Thecellloadshouldbeappliedatauniformloadingratetaking1minutetoreachdesiredstresslevel.Holdfortwominutesandreleasepressure.Sie

3、vematerialasabove.Crushedmaterialiscalculatedaspercentweightofproppantsmallerthanthespecifiedrange,e.g.-40mesh.-40/+70Mesh20/40LanzhouSandAPICrushTest6kpsiPhotomicrographs-55XWholePellet-70/+100Mesh-100/+200MeshResinCoatedSand20XPhotomicrographs@4000p

4、si@8000psi@10000psiIntermediateStrengthProppants20XPhotomicrographs@4000psi@8000psi@10000psiPhotomicroscopicPicture-1NotSolidbutwithSomeVoidsPhotomicroscopicPicture-2PoorSphericity&RoundnessPhotomicroscopicPicture-3CrystallizationWasnotwellDevelope

5、dPhotomicroscopicPicture-4CrystallizationWaswellDevelopedShortTermandLongTermConductivityTestIncreasestressto2,000psiandholdfor15minutes.Measurepat2,4and6ml/minoffluidflow.Measurefracwidthandtemperature.Increasestressanadditional2,000psiandallowtos

6、tabilizefor15minutes.Measurepat2,4and6ml/minoffluidflow,fracwidthandtemperature.Repeatlasttwostepsto12,000psi.ShortTermConductivityTestProcedureCARBOPROP®ShortTermConductivityvs.ClosureStress(2#/sqft,roomtemperature)LongTermConductivityTestProcedur

7、eIncreasestressto2,000psi.Flowfluidatratesof3,4and6ml/min.Measurep30minutesaftereachstepchangeinflowrate.Measurefracwidthandtemperature.Maintainstressfor50hr.Increasestressin2,000psiincrementsfor50hourseach.Continuemeasuringpat3,4and6ml/minoffluidfl

8、ow,fracwidthandtemperatureuntil12,000psistressisreached.CARBOPROP®LongTermConductivityvs.ClosureStress(2#/sqft,250°F)CARBOPROP®LongTermConductivityvs.ClosureStress(2#/sqft,250°F)20/40ProppantLongTermConductivityStressCyclingConductivityTestStr