Field Trial Gulf of Mexico

Well Intervention with Wel-lok™ WSO

Statistics

Location:
Gulf of Mexico
Environment:
Offshore
Deviation:
60º
Depth:
21,000'
Downhole Pressure:
9500psi
Temperature:
98ºC
Restriction:
0.000

Identification of problem

Provide a seal in the production string and annulus to shut off a lower water producing zone.

Issues to overcome

Traditional methods of reducing water production from a well included setting multiple bridge plugs in the production string or perforating the production string and squeezing cement or a resin. Bridge plugs only baffle the water, slowing it down but not stopping it, as they cannot seal the annulus outside of the production string. Resins require perforations to access the annulus, damaging the production string.

Application

  • When the alloy solidified, it sealed off the well below the tool, preventing the production of water from the lower watered out zone.
  • When the alloy was melted, it flowed through the screen and into the annulus between the screen and the formation wall.
  • A BiSN Wel-lok™ WSO (Water Shut Off) was set inside the screen between an upper oil producing zone and a lower watered out zone.

Outcomes/Conclusion

Initial water production on the well was in excess of 50%. After setting the BiSN tool, water production was reduced to under 25%.

About the application

The Wel-lok™ WSO (Water Shut Off) has been specifically developed to reduce unwanted water production from wells with sand screen and open hole gravel pack completions (OHGP). Unlike any other solution on the market, the Wel-lok™ WSO tool seals the annulus and the wellbore in one operation without the need to perforate the sandscreen or squeeze the alloy into the open hole annulus. The melted alloy fills inside the completion and in the annulus to form a metal to metal sealing solution that is seamless, significantly reducing unwanted water production.

Water Shut Off - BiSN
Water Shut Off - BiSN
Water Shut Off - BiSN
Water Shut Off - BiSN

How it works…

The Wel-lok™ WSO (Water Shut Off) has been specifically developed to reduce unwanted water production from wells with sand screen and open hole gravel pack completions (OHGP).

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permanent solution for your well

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