Product Overview
Our heavy-duty hydraulic release sub is a remotely actuated downhole releasing tool designed for reliable deployment and retrieval of downhole equipment. When hydraulic pressure is applied to the release port, shear pins are sheared, allowing the sub to separate into two sections for controlled release of the bottom BHA. The tool is typically used for setting packers, releasing fishing tools, abandoning downhole assemblies or emergency disconnect. The high-strength design can withstand heavy jarring and tensile loads before release. Multiple shear pin configurations allow customization of release pressure. Sour service material options comply with NACE MR0175 / ISO 15156 standards.
Core Features & Benefits
- Hydraulic actuation for reliable remote release downhole
- Customizable shear pin configurations for precise release pressure
- High-strength body withstands heavy jarring and tensile loads before release
- Multi-stage sealing prevents accidental release from pressure fluctuation
- Large bore minimizes flow restriction during circulation
- NACE MR0175 compliant materials for sour service
- Redressable design for multiple service cycles
Technical Specifications
| Model | Tool OD | Bore ID | Connection | Length | Release Pressure Range | Max Tensile Load | Max Torque |
|---|---|---|---|---|---|---|---|
| HRS-150 | 1.687" | 0.750" | 1" AMMT | 18" | 2,000-5,000 PSI | 35,000 lbs | 400 ft-lbs |
| HRS-175 | 1.750" | 0.875" | 1" AMMT | 20" | 2,000-6,000 PSI | 45,000 lbs | 550 ft-lbs |
| HRS-200 | 2.250" | 1.125" | 1 1/2" AMMT | 22" | 2,000-8,000 PSI | 65,000 lbs | 850 ft-lbs |
Custom configurations and shear pin ranges available upon request.
Typical Applications
- Hydraulic setting & release of fracturing packers for staged stimulation operations
- Deployment of sand control completion assemblies inside production casings
- Release of fishing assemblies after downhole junk is permanently anchored
- Downhole abandonment of special tools for long-term well remediation
- Sour well workover under hydrogen sulfide and carbon dioxide corrosive conditions
- Coiled tubing plug removal operations requiring tool disconnection downhole
- Sidetracking window milling assembly emergency release
Advantages Over Light-Duty Hydraulic Release Subs
- Reinforced body structure can sustain heavy jarring, torque and tension without premature shear pin failure
- Wider selection of customizable shear pins covers more release pressure ranges for diverse well designs
- Premium multi-stage sealing greatly lowers risk of internal fluid leakage leading to accidental disconnection
- Robust alloy construction extends service life under abrasive sandy circulation fluid
- Larger inner bore reduces pumping pressure drop across tool for improved hydraulic performance
FAQ
Q: Can I adjust the hydraulic release pressure for individual projects?
A: Yes, we supply shear pins of different shear strength to customize target release pressure to fit your operational design.
Q: Is sour service version available for high-sulfur wells?
A: NACE MR0175 certified sour service versions are supplied with complete material test certificates for export customs clearance.
Q: Can this tool be reused after release?
A: Yes, after replacing shear pins and seals, the release sub can be redressed and reused for multiple service cycles.
Q: What is the production lead time?
A: Standard models ship within 3-7 working days; customized release subs take 15-25 working days.
Get Custom Datasheet & Factory Quote
We manufacture full series downhole release tools with rigorous quality control and complete certification. Contact us with your release pressure, size and well requirements for detailed datasheet and competitive factory quotation.
