The Wel-lok M2M™ technology consists of utilizing a modified thermite chemical reaction heater to melt bismuth-based alloys downhole. The melted alloys have a viscosity similar to water, and a specific gravity 10 times that of water, allowing them to flow into the smallest areas of a wellbore without the need of any surface pumping equipment. As the alloys cool and solidify, they expand to provide a seamless gas tight seal that is non-corrosive and not affected by H2S or C02.
No mechanical parts
One trip operation
Differential pressure ratings up to 10,000 psi
Available in a range of sizes to suit API & non API tubing and casings
Temperature ranges up to 160 °C
Can be used even in damaged and corroded tubings and casings
Creates a gas tight barrier without the need to pump from surface
Non-corrosive and not affected by H2S or CO2
Can seal in cased or open hole
Millable to achieve a full bore
Non-porous and solidifies in minutes as opposed to cement and resins
Eliminates the need for expensive interventions and unreliable cement squeezes
Reduced corporate liability
The Wel-lok M2M CRT™ (Cement Repair Tool) was developed to eliminate sustained casing pressure, or casing vent flow, in cemented annuli. Unlike traditional methods of perf and squeeze or perf and wash, this tool does not require any surface pumping pressure to squeeze or circulate the sealing material into place. The tool is also run rigless on electric line, sealing through casing perforations, so section milling is not required. The bismuth-based alloy has no porosity and solidifies to create a seal in minutes as opposed to hours with traditional cement and resins, eliminating the possibility of a micro-annulus being formed to allow future gas migration. If full bore access is required, it can be milled out and still maintain a gas tight seal in the annulus.
|BiSN WEL-LOK M2M CRTTM Current Qualified Tools|
|CASING SIZE||TOOL OD|
|* custom sizes available|
You can view or download a PDF data sheet of all our other tools by clicking the links below.