E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/00 (2006.01) E21B 7/00 (2006.01) E21B 19/14 (2006.01)
Patent
CA 2055031
A portable drilling apparatus designed to be used in environmentally severe locations, such as the Arctic, includes provisions for heating various portions thereof, including a pipe shelter. The pipe shelter is used to store, warm, and clean the drill pipe and/or casing prior to insertion in the well. Thus, to provide access for loading the drill pipe and/or casing into the pipe shelter, a significantly large opening must be provided. The large opening necessarily results in significant infiltration of arctic air and loss of heated air, thereby increasing the difficulty of maintaining the pipe shelter at a comfortable working temperature. Accordingly, a high-speed spool or window-shade style door is employed to seal the opening against large scale transfers of heated and cold air. Further, an indirect fired air-heater having a capacity sufficient to maintain a positive pressure in the pipe shelter is also used. The positive pressure within the pipe shelter causes warm air to exit rapidly when the door is opened, and thereby reduces the inflow of arctic air. Accordingly, the combination of the high-speed door and positive pressure environment within the pipe shelter combine to provide a relatively stable and comfortable temperature environment.
Nabors Industries Inc.
Smart & Biggar
LandOfFree
Method and apparatus for controlling the transfer of tubular... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for controlling the transfer of tubular..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for controlling the transfer of tubular... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1789074