GripR Openhole Anchor

High-pressure, hydraulic-set anchor designed to be run as an integral part of the casing/liner to anchor downhole equipment in openhole applications

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  • Ruler Specifications
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Our GripR™ openhole anchor is a high-pressure, hydraulic-set anchor designed to be run as an integral part of the casing/liner to anchor downhole equipment for multistage zonal isolation in openhole applications. The anchor, designed with nearly full circumference and bidirectional slips, keeps the liner in place during expansion and contraction due to high-rate stage fracturing and production.

The GripR openhole anchor is set hydraulically, first by plugging the casing below the anchor using the NOV flow lock sub and then applying differential pressure at the anchor. Multiple anchors may be run between openhole packers to stabilize the casing during fracturing and production. The anchor has an anti-preset feature to prevent setting during running of the casing/liner.



  • Bidirectional large footprint slip designed for robust anchoring point in openhole completions
  • Anti-preset mechanism
  • Hydraulic set; no rotation required
  • Self-centralizing
  • Flexible; can be positioned anywhere in the completion
  • Full-bore design allows passage of frac balls/plugs for stimulation
  • Available in high-torque premium connections
  • Multiple anchors may be used to support multiple openhole packers for zonal isolation.



  • Openhole horizontal completions
  • High-pressure stimulation and completion operations 



GripR Openhole Anchor Specifications

Size 4.500 in. (114.30 mm)
Open hole size

5.875 to 6.125 in. (149.23 to 155.58 mm)

Max. OD

5.560 in. (141.22 mm)

Min. OD 3.560 in. (90.42 mm)
Thread Connection 48.600 in. (1234.4 mm)
Length  TBD by customer
Tensile strength, run in  458,382 lbf (207 919 kgf)
Tensile strength, slips set  350,000 lbf (158 757 kgf)
 Max torque*   8,000 ft/lb (10 847 N-m)
 Burst pressure rating  15,000 psi (103 421 kPa)
 Temp. rating  350 °F (177 °C)
 Material  AISI 4140-4145, 125 KSI MYS
  • GripR Openhole Anchor Data Sheet
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