In this shale gas well in the Eagle Ford play in Mexico, the primary objective was to drill a horizontal well with maximum lateral exposure within the 10 feet (3 meters) thick production zone. The challenge was to stay in the relatively thin shale pay zone while maintaining an aggressive rate of penetration.
In a mature field on the Norwegian Continental Shelf of the North Sea, an operator had attempted twice to drill a new extended-reach drilling (ERD) wellbore with a 2.05 measured depth (MD) to true vertical depth (TVD) ratio that resulted in the bottomhole assembly (BHA) becoming lost in hole above the reservoir.
Halliburton had previously drilled wells in the field using a standard steerable motor assembly, but now needed to deliver improved performance using a solution able to orient and steer the well at deeper depths while overcoming strong dipping tendencies and a natural walk of the bottomhole assembly (BHA).
To reduce costs by improving drilling time, an operator drilling through complex shale and sand formations in a remote Colombian field, where the oil-water contact can reach to within 10 feet (3 meters) true vertical depth (TVD) below the top of sand, required accurate
real-time information to navigate to the target zone.