ISOPAX Dual ESP and Dual Production Packers
ISOPAX Dual Packers are hydraulic-set, retrievable packers for dual ESP and dual production completions, with multiple ports through the mandrel for penetrators, monitoring and gas venting. They are available for 4-1/2" to 13-3/8" casing, up to 10,000 psi working pressure, with standard sizes from 6-5/8" to 9-5/8" casing.
Key specifications
- Packer type
- Hydraulic-set, retrievable, dual string
- Versions
- Dual ESP Packer; Dual Production Packer
- 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")
- Ports
- Multiple or single ports through the mandrel; optional extra ports for monitoring or gas venting
- Release
- Straight pull, cut, control line or shift sleeve
- Materials
- Low alloy steel standard; other alloys on request
- Debris
- All shear pin stubs retained after shearing; no debris left downhole
- Manufactured
- Jebel Ali Free Zone, Dubai, UAE
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
- Dual ESP: multiple or single ports through the mandrel to suit penetrator requirements.
- Dual Production: element above the slips, for multi-zone production without commingling.
- Optional additional ports for monitoring or gas venting.
- Compact design.
- No movement between tubing and casing during setting.
- All shear pin stubs retained after shearing (no debris left downhole).
- 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
- Dual ESP completions
- Dual completions and dual production flow paths
- Multi-zone production without commingling of fluids
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 dual ESP packers?
Yes. The ISOPAX Dual ESP Packer is a hydraulic-set, retrievable dual packer for dual ESP wells, up to 10,000 psi, for 4-1/2" to 13-3/8" casing.
Which dual packer sizes are standard?
The standard table covers 6-5/8" to 9-5/8" casing; for example 9-5/8" 47-53.5 lb/ft with an 8.320" maximum gauge OD and production tubing up to 5-1/2" 17 lb/ft.
Can the dual packer be configured for my completion?
Yes. String sizes, penetrators, bypass ports and metallurgy are configured per well, and bespoke dual designs are a WellBoss specialty.
Source: WellBoss 2026 Product Catalog, pages 5-8. Ratings are from WellBoss published data; confirm the final rating for your well conditions with WellBoss engineering when you request a quote.