P&A Application in Canada

Well Abandonment with Wel-lok™ TS

Statistics

Location:
Canada
Environment:
Onshore
Deviation:
Depth:
8400'
Downhole Pressure:
3600psi
Differential Pressure:
1000psi
Temperature:
80ºC
Setting ID:
4.000"
Restriction:
3.875"
Sealing ID:
4.000"

Identification of problem

A client had attempted to abandon the producing zone of a well with traditional methods of setting a bridge plug inside the 4 ½” production casing and spotting cement on top. The production casing continued to build pressure and bubble were seen at surface, preventing the client from continuing their abandonment of the well.

Issues to overcome

Provide a permanent, gas tight seal.

Application

Wel-lok™ TS was set inside the 4 ½” production casing to provide a permanent, gas tight seal in the well.

Outcomes/Conclusion

After being set in the well the seal was successfully inflow tested with no increase in pressure or bubbles over a 10-day period. Previous monitoring had show pressure build up and gas bubbles at surface within 24 hours prior to setting the TS. This was the first commercial field run of BiSN’s Wel-lok™ technology in Canada.

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.

Get in touch and find a
permanent solution for your well

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