ISOPAX ESP Packer
The ISOPAX ESP Packer is a hydraulic-set, retrievable production packer for electric submersible pump (ESP) wells. It accepts all types of ESP cable penetrator systems and is available for 4-1/2" to 13-3/8" casing, up to 10,000 psi working pressure. Standard sizes cover 6-5/8" to 9-5/8" casing, including 7" 26-29 lb/ft.
Key specifications
- Packer type
- Hydraulic-set, retrievable
- Application
- ESP completions; production annulus pressure barrier
- Working pressure
- Up to 10,000 psi
- Casing sizes
- 4-1/2" to 13-3/8" (standard table: 6-5/8" to 9-5/8")
- Penetrators
- Accepts all types of ESP cable penetrator systems; 3/8" or 1/2" triple-leg
- Release
- Straight pull, cut, control line or shift sleeve
- Materials
- Low alloy steel standard; 13Cr and other alloys on request
- Sour service
- NACE MR0175 / ISO 15156 configurations available
- Validation
- API 11D1 / ISO 14310; grade per configuration (example below: V3-R)
- Manufactured
- Jebel Ali Free Zone, Dubai, UAE
Example validated configuration: 7" 26-29 lb/ft casing, 3-1/2" 9.2 lb/ft tubing
- Casing
- 7" 26-29 lb/ft (casing ID 6.184-6.276")
- Tubing
- 3-1/2" 9.2 lb/ft
- Internal pressure rating
- 5,000 psi
- Temperature range
- 45-150 °C (113-302 °F)
- API 11D1 validation grade
- V3-R, validated by test
- Penetrator
- 3 x 3/8" NPT triple-leg penetrator, plus 1 x 3/8" NPT feed-through
- Gauge OD
- 6.029" (153.14 mm)
- Production bore min ID
- 2.913" (73.99 mm)
- Setting / release
- Hydraulic set, shear-to-release by straight pull
- Sour service
- NACE MR0175 / ISO 15156
Sizes and dimensions
| Casing size (in) | Casing size (mm) | Casing weight (lb/ft) | Casing ID min (in) | Casing ID min (mm) | Casing ID max (in) | Casing ID max (mm) | Max gauge OD (in) | Max gauge OD (mm) |
|---|---|---|---|---|---|---|---|---|
| 6-5/8 | 168.28 | 32.0 | 5.567 | 141.40 | 5.786 | 146.96 | 5.437 | 138.10 |
| 6-5/8 | 168.28 | 24.0 - 28.0 | 5.693 | 144.60 | 6.020 | 152.91 | 5.625 | 142.88 |
| 7 | 177.80 | 38.0 | 5.799 | 147.29 | 6.042 | 153.47 | 5.625 | 142.88 |
| 6-5/8 | 168.28 | 20.0 - 24.0 | 5.834 | 148.18 | 6.142 | 156.01 | 5.750 | 146.05 |
| 7 | 177.80 | 35.0 - 38.0 | 5.799 | 147.29 | 6.121 | 155.47 | 5.750 | 146.05 |
| 6-5/8 | 168.28 | 20.0 | 5.972 | 151.69 | 6.142 | 156.01 | 5.812 | 147.62 |
| 7 | 177.80 | 35.0 | 5.891 | 149.63 | 6.121 | 155.47 | 5.812 | 147.62 |
| 6-5/8 | 168.28 | 17.0 | 6.057 | 153.85 | 6.215 | 157.86 | 5.940 | 150.88 |
| 7 | 177.80 | 29.0 - 32.0 | 5.988 | 152.10 | 6.292 | 159.82 | 5.940 | 150.88 |
| 7 | 177.80 | 26.0 - 29.0 | 6.089 | 154.66 | 6.379 | 162.03 | 6.000 | 152.40 |
| 7 | 177.80 | 23.0 - 26.0 | 6.186 | 157.12 | 6.465 | 164.21 | 6.100 | 154.94 |
| 7 | 177.80 | 17.0 - 23.0 | 6.283 | 159.59 | 6.629 | 168.38 | 6.180 | 156.97 |
| 7-5/8 | 193.68 | 33.7 - 39.0 | 6.509 | 165.33 | 6.881 | 174.78 | 6.440 | 163.58 |
| 7-5/8 | 193.68 | 24.0 - 29.7 | 6.780 | 172.21 | 7.129 | 181.08 | 6.690 | 169.93 |
| 8-5/8 | 219.08 | 44.0 - 49.0 | 7.381 | 187.48 | 7.758 | 197.05 | 7.250 | 184.15 |
| 8-5/8 | 219.08 | 36.0 - 40.0 | 7.613 | 193.37 | 7.948 | 201.88 | 7.437 | 188.90 |
| 8-5/8 | 219.08 | 24.0 - 32.0 | 7.825 | 198.76 | 8.207 | 208.46 | 7.687 | 195.25 |
| 9-5/8 | 244.48 | 47.0 - 53.5 | 8.403 | 213.44 | 8.821 | 224.05 | 8.320 | 211.33 |
| 9-5/8 | 244.48 | 43.5 - 47.0 | 8.561 | 217.45 | 8.891 | 225.83 | 8.470 | 215.14 |
| 9-5/8 | 244.48 | 36.0 - 40.0 | 8.727 | 221.67 | 9.049 | 229.84 | 8.620 | 218.95 |
| Casing range | Production tubing | Second string or penetrator | Min production bore |
|---|---|---|---|
| 6-5/8" 20.0-32.0 lb/ft; 7" 35.0-38.0 lb/ft | 2-3/8" 4.6 lb/ft; 2-7/8" 6.4 lb/ft | 1.900" 2.7 lb/ft | 1.969" (50.01 mm); 2.406" (61.11 mm) |
| 6-5/8" 17.0 lb/ft; 7" 17.0-32.0 lb/ft; 7-5/8" 24.0-39.0 lb/ft; 8-5/8" 24.0-49.0 lb/ft | 2-7/8" 6.4 lb/ft; 3-1/2" 9.2 lb/ft; 4-1/2" 12.6 lb/ft | 3/8" or 1/2" triple-leg penetrator; 1.900" 2.7 lb/ft or 2-3/8" 4.6 lb/ft string | 2.406" (61.11 mm); 2.913" (73.99 mm); 3.898" (99.00 mm) |
| 9-5/8" 36.0-53.5 lb/ft | 2-7/8" 6.4 lb/ft; 3-1/2" 9.2 lb/ft; 4-1/2" 12.6 lb/ft; 5-1/2" 17.0 lb/ft | Triple-leg penetrator or second string as required | 2.406" (61.11 mm); 2.913" (73.99 mm); 3.898" (99.00 mm); 4.958" (125.93 mm) |
Additional ports and bypasses
- Second penetrator or additional bypass as required, typically for 3/4", 1" and 1-1/2" gas vent valves.
- Additional bypass as required, typically for 1/4", 3/8" and 1/2" control lines and chemical injection lines.
Features
- Accepts all types of penetrator systems.
- Compact design.
- No movement between tubing and casing during setting.
- Available with multiple size combinations for casing and tubing.
- Hydraulically set against a plugging device in the tubing below the packer; no packer movement relative to control lines or power cable while setting or retrieving.
- Anti-preset function prevents accidental setting while running in hole; once released, the packer locks in the release position and cannot reset while pulling out.
- Single-piece mandrel with no leak paths.
- Optional release methods: straight pull, cut, control line or shift sleeve.
- Low alloy steel as standard; 13Cr, nickel alloys and other materials to suit the well environment.
Applications
- ESP completions in new and mature fields
- Retrievable production annulus pressure barrier
- Zonal isolation tying production tubing to production casing
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 7-inch 26-29 lb/ft ESP packer with cable feed-through?
Yes. The ISOPAX ESP Packer covers 7" 26-29 lb/ft casing and accepts all ESP cable penetrator types. A validated configuration for 7" 26-29 lb/ft with 3-1/2" tubing is rated 5,000 psi and 45-150 °C (113-302 °F), API 11D1 V3-R.
What casing sizes does the ISOPAX ESP Packer fit?
Sizes suit 4-1/2" to 13-3/8" casing. The standard table covers 6-5/8", 7", 7-5/8", 8-5/8" and 9-5/8" casing in the weights listed above.
Can WellBoss build an ESP packer to a non-standard spec?
Yes. Bespoke ESP packer design is a WellBoss specialty: tell us the casing, tubing, cable, ports, pressure, temperature and metallurgy and engineering will design to it.
Source: WellBoss 2026 Product Catalog, pages 9-10; WellBoss technical product data sheet 001-A-070 (2026). Ratings are from WellBoss published data; confirm the final rating for your well conditions with WellBoss engineering when you request a quote.