Patent US3102621A successfully refreshed from Google Patents.
Patent US2626042A successfully refreshed from Google Patents.
US3280914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling flow within a well
Assignee: Otis Engineering Corp
•
Filing: 1964-09-22
•
Granted: 1966-10-25
•
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 00:31
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
References Cited (Backward Citations)
US2416842A
Cited
US2665759A
Cited
US2760578A
Cited
US3008522A
Cited
US2786535A
Cited
US3157233A
Cited
US3156300A
Cited
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 |