Downhole tool actuation having a seat with a fluid by-pass
First Claim
Patent Images
1. A downhole tool comprising:
- a tubular body having a wall with an internal surface defining a bore;
a reciprocating sleeve located within the bore, the reciprocating sleeve having an outside diameter and a segmented seat with a fluid by-pass, the reciprocating sleeve configured to translate from a first position to a second position downhole from the first position, the segmented seat having at least one seat segment positioned by the internal surface of the bore and being configured to pass a fluid there through and receive an obstruction, and in response to receiving the obstruction, restricting a flow of fluid while allowing a portion of the fluid sufficient to maintain drilling fluid functions downstream to flow through the fluid by-pass past the segmented seat, the flow of fluid impinging on the obstruction causing the reciprocating sleeve to move from the first position to the second position; and
a relief formed in the wall adjacent the outer diameter of the sleeve and proximate the at least one seat segment with the reciprocating sleeve at the second position, the relief configured to relieve the at least one segment releasing the obstruction when the sleeve is at the second position.
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Abstract
A downhole tool actuation system has a fluid path defined by a bore formed within a tubular body of a tool. A reciprocating sleeve is located within the bore and the sleeve has a segmented seat with a fluid by-pass. At least one seat segment is positioned by an outer diameter of the sleeve to complete the seat, and a relief is formed in a wall adjacent the outer diameter of the sleeve. When the seat is occupied by an obstruction, only a portion of the fluid path is obstructed and fluid impinging the obstruction causes the sleeve to move in the direction of flow until the at least one segment is relieved by the relief thereby releasing the obstruction.
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Citations
19 Claims
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1. A downhole tool comprising:
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a tubular body having a wall with an internal surface defining a bore; a reciprocating sleeve located within the bore, the reciprocating sleeve having an outside diameter and a segmented seat with a fluid by-pass, the reciprocating sleeve configured to translate from a first position to a second position downhole from the first position, the segmented seat having at least one seat segment positioned by the internal surface of the bore and being configured to pass a fluid there through and receive an obstruction, and in response to receiving the obstruction, restricting a flow of fluid while allowing a portion of the fluid sufficient to maintain drilling fluid functions downstream to flow through the fluid by-pass past the segmented seat, the flow of fluid impinging on the obstruction causing the reciprocating sleeve to move from the first position to the second position; and a relief formed in the wall adjacent the outer diameter of the sleeve and proximate the at least one seat segment with the reciprocating sleeve at the second position, the relief configured to relieve the at least one segment releasing the obstruction when the sleeve is at the second position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A downhole tool comprising:
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a tubular body having a wall with an internal surface defining a bore; a reciprocating sleeve located within the bore, the reciprocating sleeve having an outside diameter and a seat with a fluid by-pass and a moveable portion, the reciprocating sleeve configured to translate from a first position to a second position downhole from the first position, the moveable portion positioned by the internal surface of the tubular body and being configured to pass a fluid there through and receive an obstruction, and in response to receiving the obstruction, restricting a flow of fluid while allowing a portion of the fluid sufficient to maintain drilling fluid functions downstream to flow through the fluid by-pass past the segmented seat, the flow of fluid impinging on the obstruction causing the reciprocating sleeve to move from the first position to the second position; and a relief formed in the wall adjacent the outer diameter of the sleeve and proximate the movable portion with the reciprocating sleeve at the second position, the relief configured to relieve the moveable portion thereby releasing the obstruction.
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Specification