HOUSTON -- Enventure Global Technology has completed a commercial installation of its expandable technology in an exploratory well offshore Australia.
The Australian operator experienced wellbore instability and was forced to set the 9-5/8 in. casing higher than planned. Regaining formation integrity through cement squeezes was unsuccessful, and alternatives such as sidetracking, downsizing, and/or pulling the 9-5/8 in. string were not cost effective, according to Enventure.
Instead, a 7-5/8 x 9-5/8 in. SET Openhole Liner was run through the 9-5/8 in. conventional string and into a shale formation about 65 m (213 ft) below the 9-5/8 in. shoe. The expandable installation enabled the operator to drill as planned into the production zone at a depth of 3,961 m (12,995 ft).