According to a well-placed industry source, the tracks that guide the top drive as it moves up and down the derrick are out of alignment.
The source suggested that continued drilling could wear out the guide tracks quickly as well as hamper control of the well bores unless it is repaired soon. The cause has not been determined.
Pride International, the rig contractor responsible for providing the rig and operating it on behalf of ExxonMobil, had sub-contracted Louisiana contractor Loadmaster Derrick & Equipment to erect the derrick assembly.
However,
