Straddle Packer
Straddle Packer
The Straddle Packer is composed of a modified Snap set-II Packer combined with an AS-III Packer. It is designed for selectively treating short intervals of casing perforations to achieve uniform breakdown of the formation. The treatment span is determined by the spacing between the two sets of packing elements and is adjustable to any length down to a minimum of eighteen (18) inches.
The lower end of the Straddle Packer is plugged using an Equalizing Standing Valve or a similar device. A Spot Control Valve or Acid Valve may be installed above the packer to regulate tubing hydrostatic pressure across the perforations and to retain acid within the tubing while repositioning the packer to the next interval.
Once positioned across the lowermost perforation, the Straddle Packer is set and the interval is treated. A straight pick-up of the tubing releases the packer, allowing it to be moved to the next perforation. The setting procedure is then repeated for subsequent treatments.
J-Slot Options
- 1/4 Right Hand Turn
- 1/4 Left Hand Turn
- Auto –J (Pull and Push only)
Features
- Field proven superior design, Left hand rotation release setting tool from plug
- Standard packing element system rated at 300° F
- 1/4 right hand turn to set and 1/4 turn to release
- Large internal by-pass, Pressure equalizes prior to release of upper slips
Applications
- Temporary zonal isolation, Shallow set to test wellhead, Deep high pressure testing
- Squeeze cementing, Fracturing operations
- Multi selective zone treating and testing operations
Technical Parameter
- Pressure Rating: up to 7,500 psi (maximum).
- Temperature rating: up to 450°F
Material
- L-80, P110, 13% Cr 1 Moly, INCONEL-825, AISI 4140 80/110 KSI
Elastomer
- Nitrile, Viton, HNBR, Aflas, Silicon
Size
- 4-1/2 to 9-5/8 in
| TECH UNIT No. | 082 |
|---|---|
| MODEL | VE-STP |
