E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/50, 309/6
E21B 36/04 (2006.01) E21B 33/02 (2006.01)
Patent
CA 1299620
4683-002 ROGERS, BERESKIN & PARR CANADA TITLE: THERMAL PROTECTING BLANKET FOR A WELL HEAD CONTROL DEVICE INVENTORS: ROBERT A. ANDERSON ABSTRACT A thermal protecting blanket for a well head control device such as a blow out preventor. The blanket, is specially adapted for use in hazardous environments.It includes a flexible cover custom fitted to the shape of the well head control device, an electrical heating element disposed on the inside of the flexible cover, and which is detachable, and the cover having a closable opening so that, it may be closed to insulate the well head control device, and opened to permit access to the device during servicing. The electrical heating element is detachable, and self regulating. External connections for the well head control device pass through openings in the flexible cover, and the openings are held tight against the external connections by a drawstring. The fabric cover is made of ail resistant, water resistant and fire resistant material.
583157
361428 Alberta Ltd
Caldwell Roseann B.
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