Four existing multi-lateral horizontal gas wells located in the Southern North Sea were initially completed barefoot but production eventually ceased due to blockage of the production conduit by reservoir solids (sand and rocks).
To mitigate this problem, 2-7/8” pre-drilled liner pipe made up in lengths of up to 200m was to be deployed on wireline and coiled tubing into the live wells. Killing the wells had in the past caused significant reservoir damage and production loss and had to be avoided.
The objective was to install 2-7/8” pre-drilled liner pipe with lengths of up to 200m on wireline and coiled tubing into the four live wells.