Isolate the trouble zone while conserving hole size by planning solid expandable technology into the well design; optimize wellbore trajectory and reduce risk in sidetrack drilling operations.
Enable offshore exploratory well to reach total depth (TD) with optimal hole size after base casing was set higher than expected.
BP experienced losses while drilling a development well due to weak sand formation directly below the 13-3/8in. shoe. Multiple attempts were made to stem the losses - all without success.
A solution was required to isolate the weak sand formation and enable drilling to continue with higher...