Internal Use Only
Technical Excellence Centers
Phase 1Service Tools
DiscussionFebruary 2007
HALLIBURTON
Internal Use Only
Service Tools Application
Stimulation
Squeeze (Remedial) Cementing
Pressure and Dry testing
Well Production
Internal Use Only
Service Tools - Benefit
Interval Isolation
Casing Protection
Allowable Pressure
System Volume
Wellbore Fluid Circulation
Internal Use Only
Retrievable Service Tools
Compression or Tension
Re-settable
Tool Combinations
Drill Out Avoided
Getting “Stuck”
Internal Use Only
Going in the Hole
Compression Set Packer
Tubing, Etc.
HydraulicHold-Down
Packer Elements(Sealing Elements)
Casing
“J” Slot
Lower SlipsOr “Slips”
Drag Blocks
Internal Use Only
Retrievable Packers
Due to differential pressures acting upon the hydraulic hold-down slips, a “Circulating” valve is required for equalizing tubing/annulus pressure.
Internal Use Only
Retrievable Service Tools
Depending Upon Tool Design:
10,000 PSI Differential
400 F
2-3/8” to 20”
Internal Use Only
Retrievable Service Tools
Packer Sealing Elements:
Variable Hardness
“Soft” – Low Weight on Compression Set Packers
Hard – “Higher” Weight on Compression Set Packers
Internal Use Only
Exercise
5-1/2” Retrievable packer to be set at 8,000 ft.
2-7/8”, 6.5lb/ft, Upset tubing
Desire 15,000 lb compression
Use Red Book Pg 16
Ignore bouyancy effect
Internal Use Only
Exercise
5-1/2” Retrievable packer to be set at 8,000 ft.
For the previous exercise, what is the effect of cooling the pipe down by an average of 40F, as might be the case during a fracture treatment ?
Internal Use Only
Retrievable Service Tools
Tension Packers:
Reverse Mechanism Compared to Compression Set
“Deep”
“Shallow”
Internal Use Only
Retrievable Bridge Plugs
May be ran separately or in tandem withA retrievable packer
Internal Use Only
Drillable Service ToolsCompression (Squeeze Action)
MechanicalHydraulicWireline (Accuracy)Not Re-settable
Tool Combinations Limited
Drill Out Required
Getting “Stuck” Avoided
Internal Use Only
Multiple CompositeBridge Plugs
May be set to provide zonalisolation for single or multiple-zone stimulation. Drillout is usually complete in less than 60minutes.