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

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)**