Product Overview
Our torque resistant external slip connector is a premium mechanical coupling built to connect coiled tubing with bottom hole assemblies for high-torque milling, sidetracking and fishing applications. It adopts external wedge slip clamping mechanism to grip the outer wall of coiled tubing firmly; special anti-rotation slip tooth design delivers reliable bidirectional torque transmission, avoiding connection slippage during long-duration rotary operations.
The forged alloy steel body integrates multi-ring sealing grooves to achieve stable high-pressure sealing. Axial tension will drive wedge slips to produce self-locking effect, further increase clamping force to prevent tubing pull-out. Slip inserts can be replaced separately after wear instead of replacing the whole connector, lowering operating expenses. We provide sour-grade material compliant with ISO 15156 standards to adapt to H₂S / CO₂ corrosive well environments. This connector eliminates tubing damage caused by dimpling processing of traditional connectors, extending coiled tubing service life for heavy workover programs.
Core Features & Benefits
- External wedge slip self-locking structure, no dimpling or drilling damage to coiled tubing surface
- Anti-rotation slip teeth realize stable forward and reverse torque transmission for rotary milling tasks
- Self-enhancing clamping force under axial tension to prevent tubing slipping and pulling out
- Multi-stage elastomer sealing structure adapts to high working pressure for circulation operations
- Hardened replaceable slip inserts reduce overall maintenance cost
- Forged alloy main body with heat treatment for superior abrasion and impact resistance
- Sour resistant metallurgy optional for high-corrosion downhole conditions
- Compatible with mainstream threads such as AMMT, PAC for quick assembly with BHA
- Compact outer profile enables smooth tripping inside casing with minimal sticking risk
- Custom outer diameter, length and thread specifications for special coiled tubing sizes
Technical Specifications
| Model No. | CT Outer Diameter | Tool Max OD | Internal Through Bore | Standard Thread | Overall Length | Max Tensile Load | Max Torque | Working Pressure | Service Grade |
|---|---|---|---|---|---|---|---|---|---|
| TESC-100 | 1.00" | 1.687" | 0.500" | 3/4" AMMT | 9.5" | 45,000 lbs | 820 ft-lbs | 10,000 psi | Standard |
| TESC-150 | 1.50" | 2.125" | 1.000" | 1-1/2" AMMT | 10.2" | 67,000 lbs | 1,298 ft-lbs | 10,000 psi | Standard |
| TESC-175 | 1.75" | 2.375" | 1.000" | 1-1/2" AMMT | 10.8" | 70,000 lbs | 1,400 ft-lbs | 10,000 psi | Standard |
| TESC-150-S | 1.50" | 2.125" | 1.000" | 1-1/2" AMMT | 10.2" | 67,000 lbs | 1,298 ft-lbs | 10,000 psi | Sour H₂S |
| TESC-175-S | 1.75" | 2.375" | 1.000" | 1-1/2" AMMT | 10.8" | 70,000 lbs | 1,400 ft-lbs | 10,000 psi | Sour H₂S |
Note: Custom CT sizes, thread profiles and pressure ratings are available upon request.
Typical Applications
- Coiled tubing rotary window milling and sidetracking operations
- Heavy-duty junk fishing and stuck pipe releasing work
- High-pressure jet washing, acidizing and fracturing intervention
- Horizontal & extended reach well coiled tubing workover
- Sour well intervention with hydrogen sulfide downhole environment
- Scale removal and casing cleanup with continuous rotary torque input
Advantages Over Traditional Dimple Connectors
- External clamping avoids indentation-induced stress concentration on coiled tubing, lowering tubing fracture risk under torsion
- Far higher torque bearing capacity, fit for long continuous rotary milling runs
- Wedge self-locking design delivers more reliable tensile holding performance during heavy fishing pulls
- Replaceable slip components avoid scrapping the whole connector after slip wear
- Sealed multi-ring sealing system improves fluid isolation performance for high-pressure circulation
- Installation will not permanently damage tubing outer wall, tubing can be reused after disassembly
FAQ
Q: Will this connector leave permanent damage on coiled tubing?
A: No. The external slips produce uniform circumferential clamping force without indentation or perforation; the tubing can be reused after disassembling the connector properly.
Q: Can this connector work for sour well projects?
A: We supply NACE MR0175 / ISO 15156 certified sour service versions with full material test certificates for export clearance.
Q: Can you customize thread specifications for existing tool strings?
A: Custom threads including AMMT, PAC, REG and other special connections are supported to match your bottom hole assembly.
Q: What is your production lead time?
A: Standard in-stock models ship within 3–7 working days; customized torque resistant external slip connectors take 15–25 working days based on order quantity.
Get Custom Specification Sheet & Ex-Factory Bulk Price
We are specialized manufacturer of full-series coiled tubing connection tools with strict full-process QC testing and complete certification packages. Share your coiled tubing dimension, maximum working torque and well conditions, our engineering team will send detailed datasheet and competitive quotation within 24 hours.
