Patent US3602306A successfully refreshed from Google Patents.
US3602306A
Expired / Lapsed
US
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Blow-up preventer
Assignee: GEM TOOL CORP
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Filing: 1970-04-27
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Granted: 1971-08-31
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Expires: 1990-04-27
Abstract
Abstract An apparatus for arresting upward motion of a wire line tool blown up a production pipe by sudden excessive downhole pressure or fluid flow. The apparatus of the invention includes a wedging member having an oblique lower face, a connector member having a generally mating oblique upper face, and means for suspending a wire line tool therefrom. It also includes means for supporting the wedging member within the annulus of the well pipe and means for slidably coupling the wedging member and the connector member, whereby relative convergent motion between the two members moves the members into a braking or wedging attitude.
Inventors
- 👤 Gramison T Alexander Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:14
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/01; E21B40/00; E21B40/001
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
147 words
In a braking apparatus for use with a wire line tool in an annular opening, the combination comprising: a wedging member having an oblique lower face; a connector member having a generally mating upper face which is oblique to the longitudinal axis of said apparatus; means for supporting said wedging member within said annular opening for travel of said apparatus therethrough; and, means for coupling said wedging member and said connector member whereby relative convergent motion between said connector member and said wedging member wedges said wedging member between the side of said annular opening and said connector member by a sliding movement and generally in a direction defined by the intersection of said mating oblique faces of said members, said coupling means taking the form of a slotted elongated coupler slidably and rotatably engaged with lugs extending laterally through said wedging member and said connector member.
Claim 2
Dependent Claim
147 words
In a braking apparatus for use with a wire line tool in an annular opening, the combination comprising: a wedging member having an oblique lower face; a connector member having a generally mating upper face which is oblique to the longitudinal axis of said apparatus; means for supporting said wedging member within said annular opening for travel of said apparatus therethrough; and, means for coupling said wedging member and said connector member whereby relative convergent motion between said connector member and said wedging member wedges said wedging member between the side of said annular opening and said connector member by a sliding movement and generally in a direction defined by the intersection of said mating oblique faces of said members, said coupling means taking the form of a slotted elongated coupler slidably and rotatably engaged with lugs extending laterally through said wedging member and said connector member.
Claim 3
Dependent Claim
170 words
In a blow-up preventer for use with a wire line tool within a wellbore, the combination comprising: a wedging member having a lower oblique face; a connector member having a generally mating upper oblique face; means for supporting said wedging member within said wellbore, whereby all parts of said apparatus are supported in longitudinal alignment, thereby facilitating axial travel of said apparatus through said wellbore; and, means for slidably joining said wedging member and said connector member, whereby relative sliding movement of said wedgiNg member and said connector along said respective oblique faces thereof may be achieved when the rate of upward movement of said connector member exceeds the rate of upward movement of said wedging member, thereby wedging said wedging member between said connector member and the well tubing, said joining means including an elongated linking member having lugs projecting laterally generally from the ends thereof, said lugs being slidably and rotatably engaged by lateral longitudinal slots in at least one of said wedging member and said connector member.
Claim 4
Dependent Claim
170 words
In a blow-up preventer for use with a wire line tool within a wellbore, the combination comprising: a wedging member having a lower oblique face; a connector member having a generally mating upper oblique face; means for supporting said wedging member within said wellbore, whereby all parts of said apparatus are supported in longitudinal alignment, thereby facilitating axial travel of said apparatus through said wellbore; and, means for slidably joining said wedging member and said connector member, whereby relative sliding movement of said wedgiNg member and said connector along said respective oblique faces thereof may be achieved when the rate of upward movement of said connector member exceeds the rate of upward movement of said wedging member, thereby wedging said wedging member between said connector member and the well tubing, said joining means including an elongated linking member having lugs projecting laterally generally from the ends thereof, said lugs being slidably and rotatably engaged by lateral longitudinal slots in at least one of said wedging member and said connector member.
Claim 5
Dependent Claim
160 words
In a blow-up preventer for use with a wire line tool within a wellbore, the combination comprising: a wedging member having a lower oblique face; a connector member having a generally mating upper oblique face; means for supporting said wedging member within said wellbore, whereby all parts of said apparatus are supported in longitudinal alignment, thereby facilitating axial travel of said apparatus through said wellbore; and, means for slidably joining said wedging member and said connector member, whereby relative sliding movement of said wedging member and said connector member along said respective oblique faces thereof may be achieved when the rate of upward movement of said connector exceeds the rate of upward movement of said wedging member, thereby wedging said wedging member between said connector member and the well tubing, said joining means taking the form of a longitudinally slotted elongated coupler slidably and rotatably engaged by lugs lateral to said coupler within said wedging member and said connector member.
Claim 6
Dependent Claim
160 words
In a blow-up preventer for use with a wire line tool within a wellbore, the combination comprising: a wedging member having a lower oblique face; a connector member having a generally mating upper oblique face; means for supporting said wedging member within said wellbore, whereby all parts of said apparatus are supported in longitudinal alignment, thereby facilitating axial travel of said apparatus through said wellbore; and, means for slidably joining said wedging member and said connector member, whereby relative sliding movement of said wedging member and said connector member along said respective oblique faces thereof may be achieved when the rate of upward movement of said connector exceeds the rate of upward movement of said wedging member, thereby wedging said wedging member between said connector member and the well tubing, said joining means taking the form of a longitudinally slotted elongated coupler slidably and rotatably engaged by lugs lateral to said coupler within said wedging member and said connector member.
Claim 7
Dependent Claim
182 words
In a blow-up preventer for use with a wire line tool within a wellbore, the combination comprising: a wedging member having a lower oblique face; a connector member having a generally mating upper oblique face; means for supporting said wedging member within said wellbore, whereby all parts of said apparatus are supported in longitudinal alignment, thereby facilitating axial travel of said apparatus through said wellbore; and, means for slidably joining said wedging member and said connector member, whereby relative sliding movement of said wedging member and said connector member along said respective oblique faces thereof may be achieved when the rate of upward movement of said connector member exceeds the rate of upward movement of said wedging member, thereby wedging said member between said connector and the well tubing, said joining means taking the form of a slot along said oblique face of one connector member and said wedging member having an inner widened portion and key means projecting from the other of said members, said key means having an outer widened portion for matable sliding engaging with said inwardly widened slot.
Claim 8
Dependent Claim
182 words
In a blow-up preventer for use with a wire line tool within a wellbore, the combination comprising: a wedging member having a lower oblique face; a connector member having a generally mating upper oblique face; means for supporting said wedging member within said wellbore, whereby all parts of said apparatus are supported in longitudinal alignment, thereby facilitating axial travel of said apparatus through said wellbore; and, means for slidably joining said wedging member and said connector member, whereby relative sliding movement of said wedging member and said connector member along said respective oblique faces thereof may be achieved when the rate of upward movement of said connector member exceeds the rate of upward movement of said wedging member, thereby wedging said member between said connector and the well tubing, said joining means taking the form of a slot along said oblique face of one connector member and said wedging member having an inner widened portion and key means projecting from the other of said members, said key means having an outer widened portion for matable sliding engaging with said inwardly widened slot.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |