Flexible Couplings for Thermal Stress Mitigation of Casings for Geothermal Wells
Flexible Couplings
- Downhole logging data from Icelandic high-temperature geothermal wells shows that casing failures have been found in approximately 1 in 4 wells.
- Around 1 in 10 wells have shown casing tensile failure.
- Constrained thermal expansion of cemented casings results in damaged casing material and can lead to severe casing failures.
- Increased structural integrity is assured by allowing movement of each casing joint instead of generating excessive forces.
- Leads to more secure downhole structure and increases likelihood of successful project saving millions in investment cost and future revenues.
- The patented Flexible Coupling is a solution that improves well integrity by allowing expansion of the casing.
- Do you want to know more about this solution? Download our leaflet.
Conference Papers
Thermal expansion of casings in geothermal wells and possible mitigation of resultant axial strain
Novel Technology for Improved Casing Integrity of Wells in High-Temperature to Superhot Conditions
Improved Integrity of the Production Casing in Moderate- to Ultra-High-Temperature Geothermal Wells using Flexible Couplings
Contact
Gunnar Skúlason Kaldal
Mechanical Engineer
[email protected]