Suspension Plug Application in UK North Sea

Well Intervention with Wel-lok™ TS

Statistics

Location:
United Kingdom
Environment:
Offshore
Deviation:
20º
Depth:
9600'
Downhole Pressure:
4850psi
Differential Pressure:
2000psi
Temeprature:
130ºC
Setting ID:
4.276"
Restriction:
3.100"
Sealing ID:
4.276"

Identification of problem

Two V0 rated mechanical plugs had previously been set in this well as suspension plugs but gas continued to leak past them to surface.

Issues to overcome

The well had 5” tubing that with a kink in it which prevented full drift tools from passing through. This required a tool with a maximum OD of 3.0” to seal inside a 4.276” ID at 130 °C.

Application

A Wel-lok™ TS tool was set inside the tubing above the previously set mechanical plugs.

Outcomes/Conclusion

This tool was qualified to 7,000 psi at our testing facility in Houston, TX. After being run in the well, it was successfully pressure tested to 1,400 psi in addition to a negative pressure test which confirmed there was no longer a gas leak to surface.

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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