Field Trial Alaska

Well Abandonment with wel-lok™ TS

Statistics

Identification of problem:

Provide a gas tight seal as a long term solution during well abandonment, reducing corporate liability and potential environmental impact, utilizing the wel-lok™ technology. This concept of using this technology had previously been proven in a laboratory environment but had yet to be field tested in an actual well.

Issues to overcome

Conventional elastomer based bridge plugs and cement have been used for this purpose but neither provide a true, long term seal that is non-corrosive, gas tight and/or compatible with all downhole fluids and gasses.

Application

  • 15 wel-lok™ TS seals were run in multiple wells all set inside 4.5” tubing.
  • 3 different wellbore temperatures
  • 3 different well deviations

Outcomes/Conclusion

Tools were deployed, set and pressure tested successfully. The wel-lok™ technology was proven to be successful beyond a laboratory environment.

About the application

The wel-lok™ TS (Tubing Seal) was developed to overcome the shortcomings of traditional methods, using bridge plugs and cement during well abandonment. It is typically run on electric line but can be deployed on a slick line or coil tubing as well. It can pass through small restrictions such as damaged or crushed tubing, yet still create the gas tight seal. It has a higher expansion ratio than conventional plugs, higher pressure ratings than inflatable packers and gas blocking abilities that cement cannot match.

Tubing Seal - BiSN
Tubing Seal - BiSN
Tubing Seal - BiSN
Tubing Seal - BiSN

How it works…

The wel-lok™ TS (Tubing Seal) was developed to overcome the shortcomings of traditional methods, using bridge plugs and cement during well abandonment.

How it works…

More wel-lok™ Case Studies

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