Norway has just finished drilling a pilot hole for shallow gas on the Butch
field in the North Sea. Instead of a rig for the job, a well intervention
vessel was chartered and coiled tubing drilling (CTD) was used. It is
likely the first time this technology has been used this way in the oil and gas
The ability to work
with surface pressure gives a unique advantage to the CTD process. This allows
for maintaining underbalanced conditions on the formation to minimize damage
and increase drilling penetration rate.
technology to drill a pilot hole is ground-breaking. We reduce risk and save a
lot of money,” says project manager Espen Kopperud of Centrica Energy Norway.