Offshore Success: Complex Tubing Patch Execution in the Gulf of America
Posted on February 27, 2026
Thru Tubing Systems recently partnered with a major operator in the Gulf of America to execute a complex offshore tubing patch operation involving diagnostics, fishing, and long-interval straddle re-deployment.
The objective:
Identify additional leaks, retrieve legacy packers set in 2013, and re-install a fully tested straddle assembly using TTS 3-1/2″ Paragon II Packers — safely and without NPT.
Scope of Work
- Diagnostic evaluation across patch interval
- Retrieve and redress legacy packers
- Fish and redeploy long-interval straddle assembly
- Operate via hydraulic workover unit (HWO)
- Execute full pressure testing and system validation
Execution Highlights
Prep & Rig-Up
- Mobilized and supported multi-day HWO rig-up
- BOP testing completed
- Well safely killed with 11 ppg CaCl₂
Fishing Operations
- Tagged upper packer (~268’ RKB)
- Retrieved upper packer + 1,376’ spacer pipe with minimal overpull
- Wireline-fished bottom packer (4,109’ MD) using jars
- Both packers recovered undamaged
Diagnostics
- Identified additional tubing leaks
- Set temporary plugs
- Conducted 1,500 psi integrity holds (~6 hrs each)
- Ran caliper log for precise depth confirmation
Re-Deployment
- Set lower packer/re-entry guide at 7,288’ MD
- Deployed seal assembly + 2-3/8” BTS-8 spacer pipe
- Hydraulically set middle packer at 3,853’ MD
- Installed upper packer at 135’ MD
- Verified latches with up to 30,000 lbs overpull
Testing & Close-Out
- Pressure-tested at 250 psi (low) and 5,000 psi (high)
- Nitrogen dewatered riser
- Confirmed full straddle seal integrity
Results
- ✔️ Thousands of feet successfully patched
- ✔️ Reliable performance in chrome tubing
- ✔️ Zero non-productive time
- ✔️ Seamless service partner coordination
- ✔️ Safe, clean project handover
This operation highlights the strength of our retrievable packer technology, precise engineering, and disciplined offshore execution.
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