Underground well electrical cable transition with seals and drain
AssigneeBoyd B. Moore
InventorBoyd B. Moore
Life of this patent
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Abstract
A transition for electrical well cable through the wellhead barrier of an underground well leads to an electrical power cable connected to an above-ground electrical power source, where the only connection between the electrical well cable and the electrical power cable is formed inside the wellhead barrier, between approved primary and secondary seals. A drain or vent to the atmosphere is also located between the seals.
Claims2
A transition for insulated electrical well cable adapted for passage through a wellhead barrier of an underground well leading to an electrical power cable connected to an external electrical power source, the transition comprising:
- a) a first length of insulated electrical well cable in the wellhead barrier connected to a downhole equipment;
- b) a second length of insulated electrical well cable extending out of the wellhead barrier connected to an external power source;
- c) a primary seal inside the wellhead barrier for sealing said first length of cable connected to the downhole equipment;
- d) a secondary seal outside the wellhead barrier for sealing said second length of cable connected to the external power source;
- e) a connection between the first and second lengths of cable located between the primary and secondary seals;
- f) a drain for venting well fluids to the atmosphere that leak past the primary seal.
Dependencies are inferred from the claim text.