Technical Library


Install a 7-5/8 x 9-5/8 in. SET Openhole Liner (OHL) to isolate higher pressure zones so that mud weight could be reduced to combat lost circulation.


For years, the reduction of tubular inside diameter (ID), or “telescoping effect,” limited the exploration and production of oil and gas. Using conventional technology, operators faced significant loss of ID in the course of the normal drilling process, during reentry and deepening of existing...


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 Marcellus Shale, fracturing rates and pressures can be substantial, but there are other problems also associated with completing these wells, which can promote casing failure or compromise the pressureintegrity of a well. A...

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.