Product Overview
Our pull-to-set fracturing packer (drag setting retrievable frac packer) is a mechanically set retrievable packer specially designed for coiled tubing multi-stage fracturing, well stimulation and workover operations. Its unique drag block setting mechanism enables the packer to be set by simply pulling or reciprocating the tubing string, eliminating the need for complex hydraulic setting tools, wireline units or explosive setting devices. Once set, the packer provides reliable bidirectional annular sealing and anchoring under high differential pressure conditions. After the treatment is completed, the packer can be released and retrieved by straight overpull, enabling efficient single-trip multi-stage operations. Constructed from high-strength corrosion-resistant alloy steel with NACE MR0175 compliant material options, it is suitable for both standard and sour service environments.
Core Features & Benefits
- Drag block mechanical setting mechanism, no hydraulic or wireline setting tools needed
- Reliable retrieval by straight overpull after job completion
- Bidirectional slip anchoring system with large gripping area
- High-expansion rubber sealing element with anti-extrusion backup rings
- Multi-cycle set and release capability for multi-stage fracturing treatments
- Large internal bypass for fast pressure equalization during retrieval
- NACE MR0175 compliant material options available for H₂S sour wells
- Customizable for various casing sizes, pressures and temperature ratings
Technical Specifications
| Model | Casing Size | Max OD | Min ID | Setting Mechanism | Max Differential Pressure | Max Tensile Load | Working Temperature |
|---|---|---|---|---|---|---|---|
| DPF-450 | 4 1/2" | 3.750" | 1.500" | Drag Block / Pull Set | 7,500 PSI | 50,000 lbs | 300°F |
| DPF-562 | 5 1/2" | 4.500" | 2.000" | Drag Block / Pull Set | 7,500 PSI | 70,000 lbs | 300°F |
| DPF-700 | 7" | 5.750" | 2.500" | Drag Block / Pull Set | 5,000 PSI | 90,000 lbs | 300°F |
Custom sizes and higher pressure ratings available upon request.
Typical Applications
- Coiled tubing multi-stage fracturing operations
- Matrix acidizing and stimulation treatments requiring zonal isolation
- Water shutoff and conformance control operations
- Wellbore cleanout and sand washing with isolation
- H₂S sour well fracturing and stimulation treatments
Advantages Over Hydraulic Set Packers
- Mechanical drag block setting eliminates hydraulic setting tool requirements
- No risk of hydraulic seal failure preventing packer setting
- Faster setting cycle reduces overall operation time
- Reliable retrieval by straight overpull even after extended downhole stays
- Lower overall tool string complexity and reduced operational risk
- More cost-effective for multi-stage operations requiring multiple sets
FAQ
Q: How is the packer set?
A: By simply pulling or reciprocating the tubing string. Drag blocks engage the casing wall and compress the element assembly.
Q: How is the packer retrieved?
A: By applying straight overpull to shear the release mechanism, allowing the packer to be pulled out of hole.
Q: Can the packer be re-used?
A: Yes, it is designed for multiple set and release cycles, making it ideal for multi-stage operations.
Q: What is the maximum differential pressure rating?
A: Standard models are rated up to 7,500 PSI. Higher ratings are available upon request.
Get Custom Datasheet & Factory Quote
We manufacture full series of retrievable fracturing packers with rigorous QC and complete certification. Contact us with your casing size, pressure requirements and well conditions for detailed datasheet and competitive factory quotation.
