Patent US3306366A successfully refreshed from Google Patents.
US3306366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer apparatus
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1964-04-22
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Granted: 1967-02-28
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Expires: 1984-04-22
Abstract
No abstract record available.
Inventors
- 👤 John F Muse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:55
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1294
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A WELL PACKER APPARATUS ADAPTED TO BE LOWERED AND SET IN PACKED-OFF CONDITION IN A WELL BORE, INCLUDING A BODY HAVING A FLUID PASSAGE, A VALVE MEMBER MOVABLE UPWARDLY AND DOWNWARDLY IN SAID BODY PASSAGE BETWEEN POSITIONS OPENING AND CLOSING SAID FLUID PASSAGE, SHIFTING MEANS CONNECTIBLE TO A RUNNING-IN STRING EXTENDING TO THE TOP OF THE WELL BORE AND ENGAGEABLE WITH SAID VALVE MEMBER AND MOVABLE UPWARDLY AND DOWNWARDLY IN SAID PASSAGE BY THE RUNNING-IN STRING TO POSITIVELY SHIFT SAID VALVE MEMBER UPWARDLY AND DOWNWARDLY IN SAID PASSAGE BETWEEN POSITIONS OPENING AND CLOSING SAID PASSAGE, AND MEANS ENGAGEABLE WITH SAID SHIFTING MEANS FOR RETAINING SAID SHIFTING MEANS POSITIVELY COUPLED TO SAID VALVE MEMBER DURING UPWARD SHIFTING OF SAID VALVE MEMBER IN SAID PASSAGE BY SAID SHIFTING MEANS.
Claim 2
Dependent Claim
127 words
A WELL PACKER APPARATUS ADAPTED TO BE LOWERED AND SET IN PACKED-OFF CONDITION IN A WELL BORE, INCLUDING A BODY HAVING A FLUID PASSAGE, A VALVE MEMBER MOVABLE UPWARDLY AND DOWNWARDLY IN SAID BODY PASSAGE BETWEEN POSITIONS OPENING AND CLOSING SAID FLUID PASSAGE, SHIFTING MEANS CONNECTIBLE TO A RUNNING-IN STRING EXTENDING TO THE TOP OF THE WELL BORE AND ENGAGEABLE WITH SAID VALVE MEMBER AND MOVABLE UPWARDLY AND DOWNWARDLY IN SAID PASSAGE BY THE RUNNING-IN STRING TO POSITIVELY SHIFT SAID VALVE MEMBER UPWARDLY AND DOWNWARDLY IN SAID PASSAGE BETWEEN POSITIONS OPENING AND CLOSING SAID PASSAGE, AND MEANS ENGAGEABLE WITH SAID SHIFTING MEANS FOR RETAINING SAID SHIFTING MEANS POSITIVELY COUPLED TO SAID VALVE MEMBER DURING UPWARD SHIFTING OF SAID VALVE MEMBER IN SAID PASSAGE BY SAID SHIFTING MEANS.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |