So when is a “bypass” not a bypass from the same well but from another well location?
That should have been the question to ask Transocean's OIM (Jimmy Harrel) on the Deepwater Horizon, during his 27 May 2010 testimony in the USCG-MMS investigation hearing.
Jim Harrel was clearly taken aback when asked to elaborate on the specific problems encountered (such as loss circulation, pipe stuck, cementing and other safety issues) throughout the duration of the WELL (@min 5:30). Harrel clearly stumbled when he asked “....you...err...talking….about the well...” as if to ask if he was to detail out the problems on all the 3 wells BP had drilled since 3 Feb. He looked relieved when the counsel corrected himself by stating “the drilling of the well, the BYPASS” from “March to April”. http://www.c-spanvideo.org/program/293757-1
The oilfield term “bypass” has the same connotation as common usage, that is “to drive around an obstruction”. There are 2 ways to do this. By drilling a “sidetrack” (deviated well trajectory) from the original wellbore at a vertical angle no greater than 4o. Alternatively, the “BYPASS” could be drilled from a new surface location which is in effect a new well.
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