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Reduce Gas Migration in the Annulus of New Wells with Wel-lok™ TDAP
The Wel-lok™ TDAP (Thermally Deformable Annular Packer) was developed as a preventative tool to be run as part of the original casing string.
How it works

Our unique eutectic alloy is placed in the well on the inner string during completion and cemented into place. After cementing the alloy is melted using a wireline-activated chemical reaction heater. With a viscosity similar to liquid water, the molten alloy fills the smallest of micro-annuli, leaving behind a seamless metal-to-metal seal.
Benefits
- Thermite element uses chemical reaction that is non-explosive, requiring no special licenses or handling permits
- Can be deployed on any standard wireline without special connection
- Density of eutectic alloy is 10 times that of water allowing it to displace wellbore fluids
- Creates a V0 gas-tight seal in accordance with ISO 14310
- Non-corrosive, environmentally-friendly material unaffected by H2S, CO2 or acid washes
- Seal created in minutes and ready to test within one hour
title2
The Wel-lok™ TDAP (Thermally Deformable Annular Packer) was developed as a preventative tool to be run as part of the original casing string.
How it works

Our unique eutectic alloy is placed in the well on the inner string during completion and cemented into place. After cementing the alloy is melted using a wireline-activated chemical reaction heater. With a viscosity similar to liquid water, the molten alloy fills the smallest of micro-annuli, leaving behind a seamless metal-to-metal seal.
Benefits
- Thermite element uses chemical reaction that is non-explosive, requiring no special licenses or handling permits
- Can be deployed on any standard wireline without special connection
- Density of eutectic alloy is 10 times that of water allowing it to displace wellbore fluids
- Creates a V0 gas-tight seal in accordance with ISO 14310
- Non-corrosive, environmentally-friendly material unaffected by H2S, CO2 or acid washes
- Seal created in minutes and ready to test within one hour



