Patent US3334691A successfully refreshed from Google Patents.
US3334691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for shutting off water during air drilling
Assignee: Phillips Petroleum Co
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Filing: 1964-11-06
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Granted: 1967-08-08
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Expires: 1984-11-06
Abstract
No abstract record available.
Inventors
- 👤 Harry W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:18
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/127
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
APPARATUS FOR SEALING A FORMATION TRAVERSED BY A WELL BORE COMPRISING: A FIRST HOLLOW MEMBER HAVING A PAIR OF SPACED OPENINGS; A SECOND HOLLOW MEMBER CONCENTRICALLY POSITIONED AROUND AT LEAST A PORTION OF SAID FIRST HOLLOW MEMBER; A VALVE POSITIONED WITHIN SAID FIRST HOLLOW MEMBER, SAID VALVE HAVING A PAIR OF OUTWARDLY EXTENDING LUGS POSITIONED THROUGH THE SPACED OPENINGS IN SAID FIRST HOLLOW MEMBER INTO ENGAGEMENT WITH A PAIR OF SUBSTANTIALLY HELICAL INTERIOR GROOVES IN SAID SECOND HOLLOW MEMBER; AN INFLATABLE PACKER MEMBER CARRIED BY SAID SECOND HOLLOW MEMBER, SAID LUGS AND GROOVES COOPERATING TO OPEN AND CLOSE SAID VALVE UPON RELATIVE MOVEMENT BETWEEN SAID FIRST AND SAID SECOND HOLLOW MEMBERS; AND MEANS CONNECTING MEMBER FOR PASSING FLUID INTO SAID PACKER FLATABLE PACKER MEMBER FOR PASSING FLUID INTO SAID PACKER MEMBER FOR EXPANDING SAID PACKER MEMBER INTO SEALING ENGAGEMENT WITH SAID FORMATION.
Claim 2
Dependent Claim
142 words
APPARATUS FOR SEALING A FORMATION TRAVERSED BY A WELL BORE COMPRISING: A FIRST HOLLOW MEMBER HAVING A PAIR OF SPACED OPENINGS; A SECOND HOLLOW MEMBER CONCENTRICALLY POSITIONED AROUND AT LEAST A PORTION OF SAID FIRST HOLLOW MEMBER; A VALVE POSITIONED WITHIN SAID FIRST HOLLOW MEMBER, SAID VALVE HAVING A PAIR OF OUTWARDLY EXTENDING LUGS POSITIONED THROUGH THE SPACED OPENINGS IN SAID FIRST HOLLOW MEMBER INTO ENGAGEMENT WITH A PAIR OF SUBSTANTIALLY HELICAL INTERIOR GROOVES IN SAID SECOND HOLLOW MEMBER; AN INFLATABLE PACKER MEMBER CARRIED BY SAID SECOND HOLLOW MEMBER, SAID LUGS AND GROOVES COOPERATING TO OPEN AND CLOSE SAID VALVE UPON RELATIVE MOVEMENT BETWEEN SAID FIRST AND SAID SECOND HOLLOW MEMBERS; AND MEANS CONNECTING MEMBER FOR PASSING FLUID INTO SAID PACKER FLATABLE PACKER MEMBER FOR PASSING FLUID INTO SAID PACKER MEMBER FOR EXPANDING SAID PACKER MEMBER INTO SEALING ENGAGEMENT WITH SAID FORMATION.
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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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |