Safety system for submersible pump
First Claim
1. A safety system for a submersible pump, having an intake and a discharge, disposed within a well flow conductor comprising:
- a. means for installing the pump within the flow conductor at a preselected downhole location and for forming a fluid seal with the interior of the flow conductor to direct fluid flow through the pump;
b. means for installing a subsurface safety valve within the flow conductor at the preselected downhole location below the submersible pump and for forming a fluid seal between the exterior of the safety valve and the interior of the flow conductor;
c. the safety valve having hydraulically actuated means for opening and closing the safety valve;
d. a landing nipple with a longitudinal bore therethrough comprising a portion of the flow conductor at the preselected downhole location;
e. the landing nipple comprising a portion of the means for installing the submersible pump and the safety valve within the flow conductor;
f. a longitudinal flow passageway extending partially through the landing nipple and communicating with the longitudinal bore at preselected locations; and
g. the longitudinal flow passageway comprising means for conducting fluid pressure from the pump discharge to the hydraulically actuated means to open the safety valve.
2 Assignments
0 Petitions
Accused Products
Abstract
A submersible pump and safety system for installation in wells having a submersible pump adapted to land within a well flow conductor for pumping well fluids to the surface plus a subsurface safety valve or valves for maintaining the well under control as the pump is run into and removed from the well. The subsurface safety valve is hydraulically actuated by the discharge pressure of the pump. The landing nipple in which the pump and safety valve are mounted has longitudinal flow passageways to communicate pump discharge pressure to the safety valve. The landing nipple and longitudinal flow passageways are designed for improved reliability and minimize the possibility of mechanical damage interrupting control fluid flow to the safety valve.
165 Citations
12 Claims
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1. A safety system for a submersible pump, having an intake and a discharge, disposed within a well flow conductor comprising:
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a. means for installing the pump within the flow conductor at a preselected downhole location and for forming a fluid seal with the interior of the flow conductor to direct fluid flow through the pump; b. means for installing a subsurface safety valve within the flow conductor at the preselected downhole location below the submersible pump and for forming a fluid seal between the exterior of the safety valve and the interior of the flow conductor; c. the safety valve having hydraulically actuated means for opening and closing the safety valve; d. a landing nipple with a longitudinal bore therethrough comprising a portion of the flow conductor at the preselected downhole location; e. the landing nipple comprising a portion of the means for installing the submersible pump and the safety valve within the flow conductor; f. a longitudinal flow passageway extending partially through the landing nipple and communicating with the longitudinal bore at preselected locations; and g. the longitudinal flow passageway comprising means for conducting fluid pressure from the pump discharge to the hydraulically actuated means to open the safety valve. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A landing nipple for releasably installing a submersible pump and a safety valve at a downhole location within a well flow conductor comprising:
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a. a longitudinal bore through the landing nipple which comprises a portion of the flow conductor; b. a longitudinal flow passageway extending partially through the landing nipple and communicating with the longitudinal bore at preselected locations; c. the longitudinal flow passageway comprising means for conducting fluid pressure from the pump discharge to open the safety valve; and d. means for releasably installing the submersible pump within the longitudinal bore to prevent rotation of the pump relative to the landing nipple. - View Dependent Claims (9)
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10. A well completion which includes a submersible pump with an inlet and discharge disposed within a flow conductor and a safety system for controlling fluid flow through the flow conductor comprising:
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a. means for installing the pump within the flow conductor at a preselected downhole location and for forming a fluid seal with the interior of the flow conductor to direct fluid flow through the pump; b. means for installing a subsurface safety valve within the flow conductor at the preselected downhole location below the submersible pump and for forming a fluid seal between the exterior of the safety valve and the interior of the flow conductor; c. the safety valve having hydraulically actuated means for opening and closing the safety valve; d. an accumulator means attached to the submersible pump for supplying fluid to the pump inlet; e. a seating mandrel attached to the accumulator means with a longitudinal bore therethrough; f. swivel connector means for attaching the accumulator means to the pump inlet and adjacent accumulator means; and g. means for transmitting torque from the submersible pump through the swivel connector means to the installing means whereby the submersible pump is prevented from rotating with respect to the flow conductor. - View Dependent Claims (11)
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12. A swivel connector for use in a submersible pump installation within a well flow conductor comprising:
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a. a ball member having a tubular leg extending therefrom and a bore extending longitudinally through the ball member and tubular leg; b. the ball member having a generally sperical exterior surface with a pair of lugs positioned in holes on opposite sides thereof and a portion of each lug extending radially from the ball member; c. a key formed on the portion of each lug extending from the ball member; d. a swivel cap having a bore in communication with the bore through the ball member and a first sealing surface engaging the ball member; e. a housing means around the ball member and holding the swivel cap engaged with the ball member and the tubular leg extending through the housing means; f. a pair of keyways formed radially opposite from each other in the housing means to receive the keys which prevent rotation of the ball member relative to the housing means; and g. a circular opening at the end of each keyway to allow insertion of its respective lug therethrough and into its respective hole in the ball member.
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Specification