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Pressure Activated Sealants for Repairing Well Leaks
Rigless Repairs of SCSSV / DHSV, Wellheads, Threaded Connections, Packers, Subsea Control and Wellhead Systems
Page last modified
May 26 2023
Seal-Tite have successfully repaired over 1000 subsurface safety valve systems in both subsea and on dry tree applications. Wellheads seals such as casing and tubing hangers have been repaired over 1500 times.
Pressure activated sealants only polymerise at the leak site on differential pressure forming a flexible solid repair. The remainder of the sealant is the system remains liquid. This means the SCSSV system can use the unpolymerised sealant as part of the hydraulic control system and wellhead systems can be pressure tested after the repair.
Applicable in Subsea and Dry Tree environments
Pro/con
Early Resumption of Production
Significantly More Cost Effective than Mechanical Repair
Suitable for Subsea as well as Dry Tree Environments
SCSSV can be operated as normal after a repair
Repaired Wellhead voids can be tested after the repair
Rigless
Long Term Repair
Not a LCM solution
Limited Application in Corrosion Leaks - e.g. break through in
Specification
Pressure rating of repair
Up to 22000psi
Temperature
Up to 500F / 260C
Longevity Of Repair
Up To Life Of Field
Relative Business Impact
Technology Readiness Level
[9/9]
Development
Technology demonstration
Mature / Proven
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