WELLBORE SEALING USING M3 BISMUTH ALLOYS
Improved sealing technologies for the energy industries
One of the most challenging aspects of developing a bismuth plug is the tool string necessary to deploy the plug downhole – In particular how to provide sufficient heat to melt the alloy once at the required depth.
The typical approach for the downhole heating of alloys is to use an exothermic chemical reaction – namely derivatives of Thermite. These burn incredibly hot. Custom formulations can be dampened and controlled up to a point. However, these still burn pretty quick and hot – and this can cause many issues.
Wellstrøm has developed electrical heaters and cables with sufficient strength and capacity to provide a controllable heating solution – operating at much lower temperatures for a longer time, slowly warm-up the casing, annulus and even the formation if required.
Areas of Application
Plugging & Abandonment | Sealing leaks in Civil Structures | Industrial Pipelines | Developing Bespoke Solutions
Multiple sizes 7” to 36” OD, to serve the needs of different well/reservoir conditions
Qualified according to DNV-RP-A203 and OGUK Guidelines with a differential pressure resistance of 6,000psi (>400bar)
certified by Bureau Veritas as suitable for extreme lifetimes (3000 years) and qualified for V0 (highest grade) in ISO 14310.
The Company’s tool is capable in setting plugs inside tubing or production casings up to 10-3/4in.
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Relative Business Impact
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