Preserve hole size by implementing a contingency plan that included two SET® solid expandable liners and one conventional API liner run below the well’s planned 11-7/8 in. drilling liner.
In the Utica Shale, an Operator drilled three wells and experienced loss zones and formation integrity issues.
A gas production well had been plugged and abandoned since it was first drilled in 2008 after a hole in the 9-5/8 in. production liner was discovered, through which fluid leaked into the formation. Previous attempts to isolate the damaged casing through cement squeezing had proven unsuccessful...
A major Operator in the North Sea required isolation of a high pressure gas-bearing zone to enable safe drilling and logging of the reservoir section, as well as, a solution to isolate a leaking stage tool in the 9-5/8 in. base casing.
A Norwegian Sea Operator was unable to drill into a depleted reservoir with a planned 12-1/4 in. BHA, which left a short section of shale cap rock that needed to be isolated to enable use of water-based mud as the reservoir drill fluid.