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KCI FAQs 21st December 2018
Service Line – Wellhead Seal Isolations Product Name - MS-Sealant Frequently Asked Questions
1. How long does MS-Sealant last for?
- The base material of MS-Sealant has a 25 year life span.
2. How long will an MS-Sealant isolation last?
- If undisturbed, MS-Sealant will stay within the Valve Cavity indefinitely. Some KCI Isolations have been in place for 10+ Years.
3. Is MS-Sealant available in different viscosities?
- Yes. KCI can supply MS-Sealant in a variety of viscosities to suit the leak path shape and size. It ranges from a thin honey type thickness to a thick paste. All of these viscosities can be injected using our unique Deployment Tool System.
4. Does MS-Sealant require High Pressures to inject into a leak path?
- MS-Sealant does not need high pressures to deploy as it’s a Time Activated sealant so it does not stress the Wellhead components.
- If there is a Port in & Port out feature on a Void the pressures can be very low +/- 100psi.
- If there is a large leak in the wellhead, MS-Sealant can be deployed in low pressure stages to build up an isolation.
- MS-Sealant can be injected into a Wellhead at up to 5000psi.
- MS-Sealant bonds to its-self if deploying more than once creating a single mass of sealant and does not layer up leaving leak paths.
5. What is the curing time Of MS-Sealant?
- Once the Compound & Activator is mixed we have +/- 90 minutes to deploy the sealant into the leaking area before it becomes un-pumpable.
- The standard curing time for MS-Sealant is 4 to 6 hours dependent on Ambient & Wellhead temperature.
6. Is MS-Sealant available in different volumes?
- Yes. KCI can supply MS-Sealant in various Volumes & Pack sizes. Volumes from 500ml to 2 Litre Packs.
7. What is the pressure rating of MS-Sealant?
- There is not a standard answer as every leak path and piece of equipment is different so this is taken into consideration during the upfront Engineering phase.
- KCI will select the correct viscosity & volume of sealant to suit each application.
- MS-Sealant has been successfully tested up to 10,000psi after deployment & cure.
8. Does MS-Sealant block Injection Fittings, Ports?
- MS-Sealant can block some types of Injection Fittings after curing but we can inject a High Viscosity Grease after the sealant to clear the fitting so Leak Off testing can take place.
- An Injection fitting which is full of sealant can be changed out after the isolation has been proven for future Leak-Off testing.
9. What temperatures can MS-Sealant withstand?
- MS-Sealant has a temperature rating of -54°C to +204°C. Up to 250°C for short periods.
10. How is MS-Sealant deployed into Wellhead areas?
- MS-Sealant is deployed with a standard KCI 5k Deployment Tool & Equipment via standard Injection, Test or Monitoring Ports fitted to the Wellhead or Tree Bonnet.
11. How long can MS-Sealant Compound & Activator be kept in storage?
- KCI give each fresh batch a shelf life of 18 months. After this time it can be QA/QC checked and dependent on its condition an additional time frame can be added.