he jar & accel
DESCRIPTION
HE Jar & AccelTRANSCRIPT
Hydra-JarHydra-Jar®®
Double Acting HydraulicDouble Acting HydraulicDrilling JarDrilling Jar
Types of JarsTypes of Jars
• HydraulicHydraulic
• MechanicalMechanical
• Hydro-mechanicalHydro-mechanical
How Does a Jar WorkHow Does a Jar Work
• Energy sourceEnergy source
• Delay mechanismDelay mechanism
• Accelerate the hammer massAccelerate the hammer mass
• Impact/ImpulseImpact/Impulse
• Shock wave propagationShock wave propagation
Energy SourceEnergy Source
=
Detent SystemDetent System
• Delay mechanismDelay mechanism
• Time to apply jar loadTime to apply jar load
• Stores potential energyStores potential energy
• Sudden releaseSudden release
Acceleration of MassAcceleration of Mass
• Release/Conversion of potential energyRelease/Conversion of potential energy
• Mass above JarMass above Jar
• Free contraction rate drillpipeFree contraction rate drillpipe
• Acceleration after jar releaseAcceleration after jar release
• Terminal velocity at impactTerminal velocity at impact
• Kinetic energy = 1/2 MV2Kinetic energy = 1/2 MV2
Creating Kinetic EnergyCreating Kinetic Energy
• Kinetic Energy = 1/2 MV2Kinetic Energy = 1/2 MV2
• Energy = Impact/ImpulseEnergy = Impact/Impulse
• M = Mass (Hammer)M = Mass (Hammer)
• V = Velocity (Stretch/AcceleratorV = Velocity (Stretch/Accelerator®® Tool) Tool)
• Maximise terminal velocity at end of jar free travelMaximise terminal velocity at end of jar free travel
Detent Free TravelDetent Free Travel
Increased free travel length Increased free travel length
delivers moredelivers more
impact energyimpact energy
Affecting EnergyAffecting Energy
• Increase / Decrease amount of Hammer MassIncrease / Decrease amount of Hammer Mass
• Increase Overpull / Set down weightIncrease Overpull / Set down weight
• Add AcceleratorAdd Accelerator®® Tool Tool
Impact / Impulse RelationshipImpact / Impulse Relationship
• Less hammer equals more impact (lb)Less hammer equals more impact (lb)
• More hammer equals more impulse (lb.sec)More hammer equals more impulse (lb.sec)
• Decreasing mass or increasing overpull/set down Decreasing mass or increasing overpull/set down results in increased hammer speed at jar impactresults in increased hammer speed at jar impact
Impulse DecreasesImpulse DecreasesImpact IncreasesImpact Increases
Impact / ImpulseImpact / Impulse
Hydra-JarHydra-Jar®®
Drill CollarsDrill Collars
Hevi-Wate™Hevi-Wate™
Lower Hammer Lower Hammer MassMass
Impulse IncreasesImpulse IncreasesImpact DecreasesImpact Decreases
Higher Hammer Higher Hammer MassMass
Impact Blow at Stuck PointImpact Blow at Stuck Point
700
600
500
400
300
200
100
0
-100
-200
-3000 20 40 60 80 100 120 140
Imp
act
Ja
r B
low
(X
10
00)
mSecs
Impulse = Area Impulse = Area under Curveunder Curve
Peak ImpactPeak Impact
Jar OperationJar Operation
• Safety clampSafety clamp
• Establish the loadEstablish the load
• Set the jarSet the jar
• Fire the jarFire the jar
• Re-set the jarRe-set the jar
• Change out scheduleChange out schedule
Jar Load UpJar Load Up
Weight of Pipe Weight of Pipe AboveAbove Jars Jars++
Hole DragHole Drag++
Desired Jar LoadDesired Jar Load
Jar Load DownJar Load Down
Weight of Pipe Weight of Pipe AboveAbove Jars Jarsminusminus
Hole DragHole Dragminusminus
Desired Jar LoadDesired Jar Load
Detent SystemDetent System
• Delay mechanismDelay mechanism
• Time to apply jar loadTime to apply jar load
• Stores potential energyStores potential energy
• Sudden releaseSudden release
Detent SystemDetent System
• Quick release for optimum impact Quick release for optimum impact speedspeed
• No energy loss at point of releaseNo energy loss at point of release
• Straight push / pullStraight push / pull
• Hydraulic up and downHydraulic up and down
• Temperature compensatedTemperature compensated
Temperature CompensationTemperature Compensation
100100° F° F 500500° F° F
Detent Ring
Hole in Ring
Steel Pin
Hole in Ring
Steel Pin
Up Jar OperationUp Jar Operation
Weight of Pipe SettingSetting
Add Jar LoadAdd Jar Load Wait for Jar to FireWait for Jar to Fire
Detent SystemDetent System
• Delay mechanismDelay mechanism
• Time to apply jar loadTime to apply jar load
• Stores potential energyStores potential energy
• Sudden releaseSudden release
Jar PlacementJar Placement
• Neutral point – AVOID!Neutral point – AVOID!
• Jar tension / compression weightJar tension / compression weight– 20% WOB safety factor20% WOB safety factor
• Mass above jarMass above jar– Recommendation from Jar-Pact™Recommendation from Jar-Pact™
• Account forAccount for– Buoyancy factorBuoyancy factor
– Hole angle factorHole angle factor
Jar-PactJar-Pact™™
Input DataInput Data
• Bottom hole assemblyBottom hole assembly
– O.D., I.D., length, wt/ft.O.D., I.D., length, wt/ft.
• Drill pipe to surfaceDrill pipe to surface
• Additional drill pipeAdditional drill pipe
• HammerHammer
• Well profileWell profile
• Overpull allowanceOverpull allowance
Jars In CompressionJars In Compression
• Optimum hammer mass achieved with DC/HWDPOptimum hammer mass achieved with DC/HWDP
• Add weight slowly, bleeding through detentAdd weight slowly, bleeding through detent
• Open jar before coming out of the holeOpen jar before coming out of the hole
Running Jars in CompressionRunning Jars in Compression
Hydra-JarHydra-Jar®® Use Cautions Use Cautions
• Match O.D. of BHAMatch O.D. of BHA
• Avoid neutral positionAvoid neutral position
• Change out in a timely manner Change out in a timely manner
• Use “Jar-Pact™” Computer ProgramUse “Jar-Pact™” Computer Program
• Do not stand jar in derrick without safety clampDo not stand jar in derrick without safety clamp
Jar Will Not FireJar Will Not Fire
• Stuck above jarsStuck above jars
• Effect of pumpEffect of pump
• Effect of dragEffect of drag
• Time to fireTime to fire
• Cycle the jarsCycle the jars
Extension/Pump Open ForceExtension/Pump Open Force
8" Hydra-Jar 16.1 In2
6 1/2" Hydra-Jar 9.6 In2
4 3/4" Hydra-Jar 6.0 In2 P1
P2
L
L
Picking Up the JarPicking Up the Jar
Lift SubLift Sub
Safety ClampSafety Clamp
Tool Joint Pin Tool Joint Pin ProtectorProtector
Making Up the JarMaking Up the Jar
Safety Safety ClampClamp
Break off Break off lift sublift sub
Make Up Drill CollarsMake Up Drill Collars
Remove Safety Remove Safety ClampClamp
Coming Out of HoleComing Out of Hole
Fit Fit Safety ClampSafety Clamp
BEFORE SETTINGBEFORE SETTINGSLIPSSLIPS
Hydra-JarHydra-Jar®® Features Features
• ConstructionConstruction
• Hardbanding / Standoff subsHardbanding / Standoff subs
• DimensionsDimensions
• Straight push and pullStraight push and pull
• Hydraulic jar up and downHydraulic jar up and down
• Pressure balancedPressure balanced
• Detent system designDetent system design
• Temperature compensatedTemperature compensated
• Super sealsSuper seals
ConstructionConstruction
• 4330 Vanadium Modified steel4330 Vanadium Modified steel– Premium alloyPremium alloy
– Superior hardening propertiesSuperior hardening properties
– Higher torsional and tensile loadsHigher torsional and tensile loads
– Excellent toughnessExcellent toughness
– High Charpy impact properties (Long & Trans)High Charpy impact properties (Long & Trans)
• Plastic coated IDPlastic coated ID– All ID components plastic coatedAll ID components plastic coated
– Greatly improves corrosion resistanceGreatly improves corrosion resistance
OD WearOD Wear
• HardbandingHardbanding– Applied to four areasApplied to four areas
– Reduced OD wearReduced OD wear
• Standoff subs - availableStandoff subs - available– Reduced risk of differential stickingReduced risk of differential sticking
– Increase lifeIncrease life
– Improved hole cleaningImproved hole cleaning
– Reduced torque and dragReduced torque and drag
Hydra-JarHydra-Jar®® Specifications Specifications
Tool ODTool OD 3 3 ⅜⅜ 4 ¾*4 ¾* 6 ½ 6 ½ 88 9 ½ 9 ½
Tool IDTool ID 1 ½ 1 ½ 2 ¼ 2 ¼ 2 ¾ 2 ¾ 33 33
Max Max DetentDetent 44,00044,000 80,00080,000 175,000175,000 300,000300,000 500,000500,000
Up Up StrokeStroke 77 88 88 88 88
Down Down StrokeStroke 77 77 77 77 88
Example Common SizesExample Common Sizes
* Available with 95,000 maximum detent
Drive SystemDrive System
Drive SystemDrive System
Wiper SealWiper Seal
Wear InsertsWear Inserts
PEEKPEEK
HNBRHNBR
Pressure BalancePressure Balance
Neutralizer PistonsNeutralizer Pistons
Hydrostatic PressureHydrostatic Pressure
Balanced PressureBalanced Pressure
Balanced PressureBalanced Pressure
Balance PistonBalance Piston
Hydrostatic PressureHydrostatic Pressure
Pressure BalancePressure Balance
Super SealsSuper Seals
PressureSurface
Shaft ToGland
Clearance
Bevel
SNE (Peek) SSR Major Seal
AcceleratorAccelerator®® Tool Tool
TypesTypes
– Nitrogen filledNitrogen filled
– Fluid filledFluid filled
– MechanicalMechanical
• Energy sourceEnergy source
• Enhances jar impactEnhances jar impact
• Acts as shock isolatorActs as shock isolator
AcceleratorAccelerator®® Tool Tool
DACCH AcceleratorDACCH Accelerator®® Tool Tool
• Enhances impact of Hydra-JarEnhances impact of Hydra-Jar® ® UP & DOWN UP & DOWN
• Provides additional stretch or compressionProvides additional stretch or compression
• Concentrated energy source close to JarConcentrated energy source close to Jar
• Directs shock wavesDirects shock waves
• Reflects damaging shock waves away from rig floorReflects damaging shock waves away from rig floor
PurposePurpose
Impact with Jar & AcceleratorImpact with Jar & Accelerator®® tool tool
287
656
0
100
200
300
400
500
600
700
HWDP W/O Accelerator®
HWDP With Accelerator®
100,000 lbs Overpull at Jar
Thousands
Impact with Jar & AcceleratorImpact with Jar & Accelerator®® tool tool
DACCH AcceleratorDACCH Accelerator®® Tool Tool
• Double-actingDouble-acting
• Drilling or fishingDrilling or fishing
• Place recommended hammer mass between Place recommended hammer mass between AcceleratorAccelerator® ® Tool and Hydra-JarTool and Hydra-Jar®® Tool Tool
• Changes out like Hydra-JarChanges out like Hydra-Jar®® Tool Tool
• Operational parameters same as Hydra-JarOperational parameters same as Hydra-Jar®® Tool Tool
OperationOperation
Stuck Point
DACCH Closes LoopDACCH Closes Loop
Stuck Point
Initial Wave
DACCH Closes LoopDACCH Closes Loop
Stuck Point
Initial Wave
DACCH Closes LoopDACCH Closes Loop
Stuck Point
Initial Wave
Reflection Point
DACCH Closes LoopDACCH Closes Loop
Stuck Point
Initial Wave
Reflection Point
Reflected Wave
DACCH Closes LoopDACCH Closes Loop
Stuck Point
Initial Wave
Reflection Point
Reflected Wave
DACCH Closes LoopDACCH Closes Loop
Shock WavesShock Waves
AcceleratorAccelerator®® Tool increases efficiency of the impact, Tool increases efficiency of the impact,
providing a closed loop for the shock waves. This providing a closed loop for the shock waves. This
concentrates the energy towards the stuck point.concentrates the energy towards the stuck point.
DACCH AcceleratorDACCH Accelerator®® Tool Tool
MaintenanceMaintenance
• Incoming testIncoming test
• DisassembledDisassembled
• CleanedCleaned
• Wet mag-particle inspectionWet mag-particle inspection
• AssembledAssembled
• Hydro-test sealsHydro-test seals
• Simulated downhole testSimulated downhole test
• Data acquisitionData acquisition
Thank-youThank-you