E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/47
E21B 33/03 (2006.01)
Patent
CA 1238271
INVENTOR : LEHMAN T. REED TITLE : ELECTRIC POWER SUPPLYING WELL HEAD ASSEMBLY DOCKET NO : B-2760-1 ABSTRACT OF THE INVENTION A well head assembly that terminates on the upper end in a horizontal mounting flange on which the flange of a christmas tree array of valves may be seal- ingly mounted to control the flow of fluid from the well associated therewith, and the well head assembly including slidably engageable first and second electrical conducting cartridges below the mounting flange for supplying electric power to a number of insulated electrical conductors that extend downwardly in the well to an electric motor driven down hole pump or other electrical apparatus. The posit- ioning of the christmas tree array of valves at a minimum height relative to the well head is most desirable in those situations where a number of wells are drilled close together, such as on an off shore island, and equip- ment must be periodically moved over the array of valves for maintenance or drilling purposes. The well head assembly also includes means for pressurizing a normally open pressure actuated valve in communication with a tubing string operatively associated with the assembly to place the valve in a closed position. Closing of the valve eliminates the possibility of continued undesired fluid discharge from the well in the event of a catasrophe or malfunctioning of the well. -1-
471015
Fetherstonhaugh & Co.
Midway Fishing Tool Co.
LandOfFree
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