Zone Seeker Open Hole Packer
The Zone Seeker Open Hole Packer is a hydraulic-set packer for open hole multistage fracturing, rated 15,000 psi differential. Released 4-1/2" configurations seal in 5.875" to 6.300" open hole, in AISI 4140 (to 275 °F) or Inconel 718 (tested 150-325 °F, to API 19OH-V1).
Key specifications
- Packer type
- Hydraulic-set open hole packer
- Application
- Open hole multistage stimulation
- Differential pressure
- 15,000 psi
- Tool size
- 4-1/2"
- Temperature
- Up to 275 °F (AISI 4140); tested 150-325 °F (Inconel 718)
- Open hole range
- 5.875" to 6.300" (by configuration, table below)
- Features
- Anti-rotation set screws, anti-preset piston, fully retained packing element
- Qualification
- Inconel 718 version tested to API 19OH-V1 at 15,000 psi
- Other metallurgy
- Super 13Cr and other alloys engineered on request
Sizes and dimensions
| Configuration | Material | Open hole range (in) | Max OD (in) | Min ID (in) | Length (ft) | Differential pressure (psi) | Temperature | Element |
|---|---|---|---|---|---|---|---|---|
| 4-1/2" 18.8 lb/ft | AISI 4140, 125 ksi MYS | 6.000 - 6.300 | 5.625 | 3.600 | 3.15 | 15,000 | Up to 275 °F | 80 durometer HNBR |
| 4-1/2" 15.2 lb/ft | Inconel 718, 125 ksi MYS | 5.875 - 6.250 | 5.560 | 3.500 | 3.83 | 15,000 | Tested 150-325 °F; max 335 °F | Per data sheet |
Features
- Hydraulic set by applying pressure to the tubing string.
- Anti-rotation set screws.
- Anti-preset piston prevents setting while running in hole.
- Fully retained packing element.
- Internal yield 16,636 psi and external yield 15,397 psi (AISI 4140 version).
Applications
- Open hole multistage fracturing
- Open hole zonal isolation in horizontal wells
- Sour or corrosive wells (Inconel 718 version)
Need a size, rating or metallurgy not listed?
Bespoke design is a WellBoss specialty. Our engineers design packers and completion tools to your specification: casing and tubing, pressure and temperature, ports and feed-throughs, connections, metallurgy and API 11D1 / ISO 14310 validation grade. Designs are built and tested in our Dubai facility.
Questions buyers ask
Does WellBoss make a 15,000 psi open hole packer?
Yes. The Zone Seeker Open Hole Packer is rated 15,000 psi differential, in 4-1/2" configurations for 5.875" to 6.300" open hole.
Is there a corrosion-resistant open hole packer?
Yes. The Inconel 718 configuration is tested to API 19OH-V1 at 15,000 psi, 150-325 °F.
Can WellBoss engineer an open hole packer in another size or alloy?
Yes. Other hole sizes and alloys such as Super 13Cr are engineered on request.
Source: WellBoss open hole packer technical data (RTU 1472 Rev A; Zone Seeker 15k technical data page Rev A), as quoted in WellBoss proposals, 2026. Ratings are from WellBoss published data; confirm the final rating for your well conditions with WellBoss engineering when you request a quote.