The oil well is created by drilling a hole into the earth with an oil rig. A steel pipe (casing) is placed in the hole, to provide structural integrity to the newly drilled wellbore. Holes are then made in the base of the well to enable oil to pass into the bore. Finally a collection of valves called a “Christmas Tree” is fitted to the top, the valves regulating pressures and controlling flows.
DWOG rigs are capable of carrying out a variety of drilling activities, including directional, horizontal, pad drilling, under-balanced drilling and re-entry work. All rigs are engineered to accept top drives. They are designed to perform under extreme weather conditions, because drilling operations run 24 hours a day, seven days a week, 365 days a year.