AVS Electronic Circulating Valve - AVOS, AVS, AVD, AVT ... · AVS tools read the signals and shift...
Transcript of AVS Electronic Circulating Valve - AVOS, AVS, AVD, AVT ... · AVS tools read the signals and shift...
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AVS Electronic Circulating Valve
www.intelligentdrillingtools.cominfo@intelligentdrillingtools.com
Technical Summary
IntelligentDrillingToolsintroducetheAnnularVelocitySplitfloworAVSelectroniccirculatingvalvewithsplitflowandfullbypasspositions.AVSisanelectronicmulti-positioncirculatingvalve.
TheAVStoolsarenotactivatedbydropballsordartsoranyothertypeofmechanismdeliveredfromsurfacethroughthedrillpipe.Thetoolsareelectronicand intelligent,meaningtheyhaveonboardsensorswithlogicandcanrespondtosurfacecommandssentby“Downlinking”acodedsignaltothetoolviaapatternofpumpson/offandspecificRPMaccordingtoafunctionmap.TheAVStoolsreadthesignalsandshifttotheparticularpositionrequested.
TheAVShas3positions:
1. Through Bore–allthedrillingfluidflowgoesdirectlythroughthetool,BHAandBit.
2. Split Flow–Thisisanopenpositionthatcanbenozzledtoallowacertainamountoftheflowtobediverted into theAnnulus,bypassing theBHA.ThiscanbeengineeredusingIDT’sSplitFlowsoftwaretoallowtheminimumflowrequirementtopowerMWD/RSS/Motor/Bithydraulicsetc.,andtheremainderouttotheannulus.ThismaximisesAnnularVelocityforagivensurfacepressureincreasingHoleCleaningability.
3. Full Bypass–ThispositionopensuptheTotalFlowArea(TFA)furtherandthusallowingmaximumflowratetotheannulusforthehighestAnnularVelocityatthelowestsurfacepressure. In addition, if Lost Circulation Material (LCM) is pumped, the tool can pass150ppbcoarseLCM.AballvalveclosesofftheboretoensurethattheDrillingtoolsandBitdonotbecomeblockedbytheLCMmaterial.
Features Benefits
• No drop balls, Darts or RFID tags • Can be run in any inclination well• Command via surface Downlink • Can be activated in Horizontal wells
•• Simple and Rapid commands • Can be run anywhere in the BHA• Throughbore at all times • Can be run below an MWD• Battery powered. Low power draw • Splitflow maximises Annular Velocity• In excess of 200 cycles • Up to 150ppb LCM through Bypass Position• Splitflow position with Variable Nozzles • LCM will not enter BHA in Bypass position• Bypass position with BHA shutoff • Cleans hole while drilling in Splitflow• 4in2 TFA in full Bypass position • No waiting for Balls and Darts to drop
AVS Applications
TheAVShasmultipleapplicationsincluding:
ü Maximiseholecleaningwhiledrillingü PumpingLCMü Jettingstabiliserspreventingpackoffs
ü RunbehindReamerü SubseaRiser/BOPJettingü HolecleaningwithTaperedString
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AVS Electronic Circulating Valve
www.intelligentdrillingtools.cominfo@intelligentdrillingtools.com
Technical Specification
AVSToolOD(in) 8.25ToolID,min(in) 2.36ToolLength(ft) 17ToolWeight(tonne) 1.05TotalFlowArea(in2):
Pre-ActivationTFA(ThroughBore) 4.37SplitFlowTFA(ToAnnulus),min/max* 0.20/0.44
FullBypassTFA(ToAnnulus) 4.00NumberofPorts 4NumberofCycles >200MaximumFlowRate(gpm) 1200MinimumActivationFlowRate(Water)(gpm)**