Patent US4586569A successfully refreshed from Google Patents.
US4586569A
Expired / Lapsed
US
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Retrievable fluid control valve
Assignee: Halliburton Co
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Filing: 1984-09-28
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Granted: 1986-05-06
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Expires: 2004-09-28
Abstract
Abstract An improved presettable, pressure-responsive retrievable fluid control valve contains a plurality of spring housing sections having individual springs disposed therein. Each of the springs is connected in mechanical parallel with each other spring. To select the preset pressure threshold at which the valve opens in response to a column of fluid in a tubing in which the valve is disposed, the number of springs and zero to two compression spacer members are chosen for each spring. The valve also includes a bypass section having an inner bypass mandrel connected by a frangible member to an outer bypass port member. Connected to the outer bypass port member is a sealing member for seating the valve in a seating nipple of a tubing. The bypass mandrel and the outer bypass port member are normally held by the frangible member in a fixed relationship so that ports through the bypass mandrel and the outer bypass port member are axially offset in a closed, or non-fluid conducting, position. When the valve is to be removed from the tubing, a force is applied to the bypass mandrel so that the frangible member is broken, thereby allowing relative movement between the bypass mandrel and the outer bypass port member. In this condition, the ports are aligned to allow a pressure equalizing fluid to flow on both sides of the sealing member so that the valve can be more easily retrieved from the seating nipple of the tubing.
Inventors
- 👤 Walter E. Hyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:52
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/063; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7905
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
759 words
A retrievable fluid control valve, comprising: a first cylindrical spring housing member having a first cavity with only one opening thereto defined therein; first spring means, disposed in said first cavity, for providing a first biasing force; a first spring guide member disposed coaxially with said first spring means between said first spring means and said one opening of said first cavity; a second cylindrical spring housing member having a second cavity with two openings thereto defined therein, said second spring housing member coaxially connected to said first spring housing member with said first cavity communicating with said second cavity through the only opening to said first cavity and one of said two openings to said second cavity; second spring means, disposed in said second cavity, for providing a second biasing force; a second spring guide member disposed coaxially with said second spring means between said second spring means and the other one of said two openings to said second cavity; a first coupling member extending between said first and second spring guide members and having said second spring means mounted thereon; a third cylindrical spring housing member having a third cavity with two openings thereto defined therein, said third spring housing member coaxially connected to said second spring housing member with said second cavity communicating with said third cavity through the other one of said two openings to said second cavity and one of the two openings to said third cavity; third spring means, disposed in said third cavity, for providing a third biasing force; a third spring guide member disposed coaxially with said third spring means between said third spring means and the other one of said two openings to said third cavity; a second coupling member extending between said second and third spring guide members and having said third spring means mounted thereon; a valve housing member having a fourth cavity with three openings thereto defined therein, said valve housing member coaxially connected to said third spring housing member with said third cavity communicating with said fourth cavity through the other one of said two openings to said third cavity and a first one of said three openings to said fourth cavity; a valve seat retained in said fourth cavity between a second one and a third one of said three openings to said fourth cavity; a valve member slidably disposed in said fourth cavity in engagement with said third spring guide member so that said valve member is urged toward a closed position against said valve seat by said first, second and third biasing forces wherein said valve member obstructs fluid flow between said second one and said third one of said three openings to said fourth cavity and so that said valve member is urged toward an open position away from said valve seat by an external force acting against said first, second and third biasing forces wherein said valve member is removed from obstructing fluid flow between said second one and third one of said three openings to said fourth cavity; a cylindrical bypass mandrel having a fifth cavity with three openings thereto defined therein, said bypass mandrel coaxially connected to said valve housing member with said fourth cavity communicating with said fifth cavity through the third one of said three openings to said fourth cavity and a first one of said three openings to said fifth cavity; an outer bypass port member having a sixth cavity with three openings thereto defined therein, said outer bypass port member having said bypass mandrel concentrically disposed therethrough with the first one and a second one of the openings to said fifth cavity coaxially aligned with a first one and a second one of said three openings to said sixth cavity and with a third one of the three openings to said fifth cavity radially spaced from a third one of the three openings to said sixth cavity; and shear pin means for connecting said outer bypass port member to said bypass mandrel so that the third one of said three openings to said fifth cavity is longitudinally spaced from the third one of said three openings to said sixth cavity, said shear pin means responsive to a longitudinal force applied to said bypass mandrel for breaking said shear pin means so that said bypass mandrel is movable relative to said outer bypass port member to an open bypass position wherein the third one of said three openings to said fifth cavity is aligned with the third one of said three openings to said sixth cavity.
Claim 2
Dependent Claim
759 words
A retrievable fluid control valve, comprising: a first cylindrical spring housing member having a first cavity with only one opening thereto defined therein; first spring means, disposed in said first cavity, for providing a first biasing force; a first spring guide member disposed coaxially with said first spring means between said first spring means and said one opening of said first cavity; a second cylindrical spring housing member having a second cavity with two openings thereto defined therein, said second spring housing member coaxially connected to said first spring housing member with said first cavity communicating with said second cavity through the only opening to said first cavity and one of said two openings to said second cavity; second spring means, disposed in said second cavity, for providing a second biasing force; a second spring guide member disposed coaxially with said second spring means between said second spring means and the other one of said two openings to said second cavity; a first coupling member extending between said first and second spring guide members and having said second spring means mounted thereon; a third cylindrical spring housing member having a third cavity with two openings thereto defined therein, said third spring housing member coaxially connected to said second spring housing member with said second cavity communicating with said third cavity through the other one of said two openings to said second cavity and one of the two openings to said third cavity; third spring means, disposed in said third cavity, for providing a third biasing force; a third spring guide member disposed coaxially with said third spring means between said third spring means and the other one of said two openings to said third cavity; a second coupling member extending between said second and third spring guide members and having said third spring means mounted thereon; a valve housing member having a fourth cavity with three openings thereto defined therein, said valve housing member coaxially connected to said third spring housing member with said third cavity communicating with said fourth cavity through the other one of said two openings to said third cavity and a first one of said three openings to said fourth cavity; a valve seat retained in said fourth cavity between a second one and a third one of said three openings to said fourth cavity; a valve member slidably disposed in said fourth cavity in engagement with said third spring guide member so that said valve member is urged toward a closed position against said valve seat by said first, second and third biasing forces wherein said valve member obstructs fluid flow between said second one and said third one of said three openings to said fourth cavity and so that said valve member is urged toward an open position away from said valve seat by an external force acting against said first, second and third biasing forces wherein said valve member is removed from obstructing fluid flow between said second one and third one of said three openings to said fourth cavity; a cylindrical bypass mandrel having a fifth cavity with three openings thereto defined therein, said bypass mandrel coaxially connected to said valve housing member with said fourth cavity communicating with said fifth cavity through the third one of said three openings to said fourth cavity and a first one of said three openings to said fifth cavity; an outer bypass port member having a sixth cavity with three openings thereto defined therein, said outer bypass port member having said bypass mandrel concentrically disposed therethrough with the first one and a second one of the openings to said fifth cavity coaxially aligned with a first one and a second one of said three openings to said sixth cavity and with a third one of the three openings to said fifth cavity radially spaced from a third one of the three openings to said sixth cavity; and shear pin means for connecting said outer bypass port member to said bypass mandrel so that the third one of said three openings to said fifth cavity is longitudinally spaced from the third one of said three openings to said sixth cavity, said shear pin means responsive to a longitudinal force applied to said bypass mandrel for breaking said shear pin means so that said bypass mandrel is movable relative to said outer bypass port member to an open bypass position wherein the third one of said three openings to said fifth cavity is aligned with the third one of said three openings to said sixth cavity.
Claim 3
Dependent Claim
105 words
The retrievable fluid control valve of claim 1, wherein: said bypass mandrel has an outer surface from which a first shoulder portion radially outwardly extends; said outer bypass port member has an inner surface from which a second shoulder portion radially inwardly extends, said inner surface overlying said outer surface with said first shoulder portion facing said second shoulder portion so that a chamber is defined thereby; and said retrievable fluid control valve further comprises shock absorbing means, disposed in said chamber, for absorbing a mechanical shock between said first and second shoulder portions when said bypass mandrel is moved to said open bypass position.
Claim 4
Dependent Claim
27 words
The retrievable fluid control valve of claim 2, wherein said bypass mandrel further has a fluid passageway defined therein between said fifth cavity and said outer surface.
Claim 5
Dependent Claim
56 words
The retrievable fluid control valve of claim 1, further comprising: a sealing shoe having a seventh cavity defined therein, said sealing shoe connected to said outer bypass port member so that said seventh cavity communicates with said fifth cavity of said bypass mandrel; and sealing means, mounted on said sealing shoe, for providing a fluid-tight seal.
Claim 6
Dependent Claim
77 words
The retrievable fluid control valve of claim 1, further comprising: a first spacer member disposed in said first spring housing member between said first spring means and said first spring guide member; a second spacer member disposed in said second spring housing member between said second spring means and said second spring guide member; and a third spacer member disposed in said third spring housing member between said third spring means and said third spring guide member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |