Sealant for DHSV Hydraulic Leak Repairs
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Robust isolation for DHSV system leaks
Page last modified
March 14 2023
KCI recognised the need for a new approach to repairing leaks in Control Lines.
IG-FP was formulated to isolate leaks in Down Hole Safety Valve (DHSV) Control Line Compression fittings where the hydraulic fluid is leaking out of the system.
Leaking Control Lines can create issues by losing control fluid to the Well bore, the A-Annulus or building up hydraulic pressure in the Tubing Hanger Void.
The Well may have to be shut in and taken offline if hydraulic leaks are excessive or if the DHSV cannot be kept open.
By simply deploying IG-FP the leaks in the system will be stopped while maintaining full operational control of the DHSV. IG-FP remains soft and does not cure or change viscosity.
Pro/con
IG-FP does not cure or turn solid over time or under pressure
IG-FP's operating pressure is up to 10,000psi
We can pinpoint the location of the leak by accurately measuring the volumes of sealant and operating fluid pumped versus the internal volume of the Control Line.
A fast, robust, cost-effective and long-lasting way to repair leaks from their DHSV hydraulic control systems
We can supply various viscosities depending on the leak rate, leak path and location
IG-FP can isolate leaks in standard Wireline Retrievable DHSV's as well as Swellable seal stacks
IG-FP has been used to hold open a hydraulic Master Valve Actuator on a production Well due to a piston seal leak
IG-FP is a slick, pre-cured, non-setting gel with micro sealing elements mixed throughout that is deployed from surface into the Control Line and acts like a mini pig
The very high viscosity version can block Double Block & Bleed needle valves if shuttled back & forth a lot due to the torturous flow path
Specification
Chemical characteristics
IG-FP is a slick, pre-cured, non-setting gel with micro sealing elements mixed throughout
Temperature range
-50 to 175°C
Pressure rating
10,000 psi
Relative Business Impact
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