ISOPAX Slim-Line Thru-Tubing System
The ISOPAX Slim-Line Retrievable Through-Tubing Packer system runs inside existing 2-3/8" to 5-1/2" tubing on slickline, e-line, coiled tubing or jointed pipe, rated 5,000, 7,500 or 10,000 psi to 350 °F and validated to ISO 14310 / API 11D1 V3-R and V0-R. It is used for straddles, tubing patches, jet pump, gas lift, velocity strings and rigless thru-tubing ESP completions.
Key specifications
- System
- Retrievable through-tubing packers, straddles, PBR and stinger, rigless thru-tubing ESP components
- Tubing sizes
- 2-3/8" to 5-1/2"
- Pressure ratings
- 5,000, 7,500 and 10,000 psi
- Temperature
- Up to 350 °F (177 °C)
- Validation
- ISO 14310 / API 11D1 V3-R and V0-R
- Conveyance
- Slickline, e-line, coiled tubing or jointed pipe
- Seal stroke
- Floating seal stroke up to 20 ft
- Release
- Straight pull, no downward manipulation (slickline retrievable)
- Also runs as
- Retrievable bridge plug
Sizes and dimensions
| Tubing size (in) | Tubing size (mm) | Max OD (in) | Max OD (mm) | Min ID (in) | Min ID (mm) | Pressure rating (psi) | Upper connection (stinger) | Fishing neck (PBR) |
|---|---|---|---|---|---|---|---|---|
| 2-3/8 | 60.33 | 1.843 | 46.81 | 0.562 | 14.27 | 5,000 | 1" LP | 2" P-GS |
| 2-7/8 | 73.03 | 2.250 | 57.15 | 0.875 | 22.23 | 5,000 | 1-1/4" LP | 2-1/2" P-GS |
| 3-1/2 | 88.90 | 2.720 | 69.09 | 1.500 | 38.10 | 5,000 | 2-3/8" NU | 3" P-GS |
| 4-1/2 | 114.30 | 3.720 | 94.49 | 2.250 | 57.15 | 5,000 | 2-7/8" NU | 4" P-GS |
| 5-1/2 | 139.70 | 4.500 | 114.30 | 2.875 | 73.03 | 5,000 | 3-1/2" NU | 5" P-GS |
Features
- One-trip installation and one-trip retrieval.
- Packers hold full differential pressure from above and below.
- Bi-directional caged slips below the element for retrievability.
- Multi-durometer element stack matched to the pressure and temperature rating.
- Full-bore ID through packer and anchor or floating seal system.
- Release mechanism independent of hanging weight or differential pressure.
- Anti-preset and anti-reset mechanisms.
- Rigless thru-tubing ESP: installed in four runs under live-well conditions (tubing anchor, tubing pack-off, lower mating unit, upper mating unit); full ESP with penetrator inside 4-1/2" tubing and above.
Applications
- Rigless thru-tubing ESP completions
- Straddle packers for selective zonal isolation
- Tubing patch for tubing leak isolation
- Jet pump and gas lift
- Velocity strings
- Temporary or permanent use in brown and green fields, offshore and remote wells
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
Can an ESP be installed through existing tubing without a rig?
Yes. The WellBoss Rigless Thru-Tubing ESP Completion installs a full ESP with penetrator inside 4-1/2" tubing and above in four runs under live-well conditions.
What ratings does the Slim-Line through-tubing packer have?
5,000, 7,500 and 10,000 psi, temperatures up to 350 °F, validated to ISO 14310 / API 11D1 V3-R and V0-R.
Which tubing sizes are covered?
2-3/8" to 5-1/2" tubing; additional sizes and configurations are available on request.
Source: WellBoss 2026 Product Catalog, pages 35-38. Ratings are from WellBoss published data; confirm the final rating for your well conditions with WellBoss engineering when you request a quote.