US3280914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling flow within a well
Assignee: Otis Engineering Corp
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Filing: 1964-09-22
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Granted: 1966-10-25
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Expires: 1984-09-22
Abstract
No abstract record available.
Inventors
- 👤 Phillip S Sizer
- 👤 Vonner R Cherry
- 👤 Lowell M Wilhoit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:43
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A METHOD OF PRODUCING A WELL HAVING A CASING EXTENDING DOWNWARDLY FROM THE WELL HEAD TO A PRODUCTION ZONE AND A TUBING IN SAID CASING EXTENDING DOWNWARDLY TO SAID PRODUCTION ZONE, SAID TUBING BEING PACKED TO SAID CASING BY A PACKER AT A SUBSURFACE LEVEL NEAR THE TOP OF THE WELL, THE STEPS COMPRISING: ESTABLISHING A FIRST FLOW PATH FROM SAID PRODUCTION ZONE TO THE WELLHEAD THROUGH SAID TUBING, ESTABLISHING A SECOND FLOW PATH FROM SAID PRODUCTION ZONE THROUGH THE TUBING-CASING ANNULUS AND JOINING SAID SECOND FLOW PATH WITH SAID FIRST FLOW PATH BELOW AND ADJACENT TO SAID PACKER, AND
Claim 2
Dependent Claim
101 words
IN A METHOD OF PRODUCING A WELL HAVING A CASING EXTENDING DOWNWARDLY FROM THE WELL HEAD TO A PRODUCTION ZONE AND A TUBING IN SAID CASING EXTENDING DOWNWARDLY TO SAID PRODUCTION ZONE, SAID TUBING BEING PACKED TO SAID CASING BY A PACKER AT A SUBSURFACE LEVEL NEAR THE TOP OF THE WELL, THE STEPS COMPRISING: ESTABLISHING A FIRST FLOW PATH FROM SAID PRODUCTION ZONE TO THE WELLHEAD THROUGH SAID TUBING, ESTABLISHING A SECOND FLOW PATH FROM SAID PRODUCTION ZONE THROUGH THE TUBING-CASING ANNULUS AND JOINING SAID SECOND FLOW PATH WITH SAID FIRST FLOW PATH BELOW AND ADJACENT TO SAID PACKER, AND
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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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |