US3080922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple zone well production apparatus
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1956-01-30
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Granted: 1963-03-12
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Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 Bernardus E Mater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:49
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
IN MULTIPLE ZONE WELL PRODUCTION APPARATUS: A WELL CASING PASSING THROUGH UPPER AND LOWER PRODUCING ZONES IN A WELL BORE, SAID CASING HAVING UPPER AND LOWER OPENINGS THROUGH WHICH PRODUCTION FROM SAID UPPER AND LOWER ZONES CAN FLOW INTO THE WELL CASING; BARRIER MEANS IN SAID CASING BETWEEN SAID UPPER AND LOWER OPENINGS; A HEAD HAVING A PLURALITY OF LONGITUDINAL PASSAGES; SAID HEAD HAVING THREADED MEANS IN ONE OF SAID PASSAGES FOR SECURING A FIRST TUBULAR STRING TO SAID HEAD EXTENDING TO THE TOP OF THE CASING; TUBULAR MEANS CONNECTED TO SAID HEAD ENGAGING SAID BARRIER MEANS AND COMMUNICATING WITH SAID ONE PASSAGE FOR CONDUCTING FLUID IN THE LOWER ZONE TO SAID FIRST TUBULAR STRING; SAID HEAD HAVING MEANS IN ANOTHER OF SAID PASSAGES RECEIVING A SECOND TUBULAR STRING EXTENDING TO THE TOP OF THE CASING FOR CONDUCTING FLUID FROM THE UPPER ZONE TO THE TOP OF THE WELL BORE; SAID HEAD HAVING A GUIDE SURFACE INCLINED DOWNWARDLY FROM SAID ONE PASSAGE TO SAID ANOTHER PASSAGE TO GUIDE THE SECOND TUBULAR STRING INTO SAID ANOTHER PASSAGE AFTER SAID HEAD HAS BEEN LOWERED IN THE WELL BORE ON THE FIRST TUBULAR STRING.
Claim 2
Dependent Claim
191 words
IN MULTIPLE ZONE WELL PRODUCTION APPARATUS: A WELL CASING PASSING THROUGH UPPER AND LOWER PRODUCING ZONES IN A WELL BORE, SAID CASING HAVING UPPER AND LOWER OPENINGS THROUGH WHICH PRODUCTION FROM SAID UPPER AND LOWER ZONES CAN FLOW INTO THE WELL CASING; BARRIER MEANS IN SAID CASING BETWEEN SAID UPPER AND LOWER OPENINGS; A HEAD HAVING A PLURALITY OF LONGITUDINAL PASSAGES; SAID HEAD HAVING THREADED MEANS IN ONE OF SAID PASSAGES FOR SECURING A FIRST TUBULAR STRING TO SAID HEAD EXTENDING TO THE TOP OF THE CASING; TUBULAR MEANS CONNECTED TO SAID HEAD ENGAGING SAID BARRIER MEANS AND COMMUNICATING WITH SAID ONE PASSAGE FOR CONDUCTING FLUID IN THE LOWER ZONE TO SAID FIRST TUBULAR STRING; SAID HEAD HAVING MEANS IN ANOTHER OF SAID PASSAGES RECEIVING A SECOND TUBULAR STRING EXTENDING TO THE TOP OF THE CASING FOR CONDUCTING FLUID FROM THE UPPER ZONE TO THE TOP OF THE WELL BORE; SAID HEAD HAVING A GUIDE SURFACE INCLINED DOWNWARDLY FROM SAID ONE PASSAGE TO SAID ANOTHER PASSAGE TO GUIDE THE SECOND TUBULAR STRING INTO SAID ANOTHER PASSAGE AFTER SAID HEAD HAS BEEN LOWERED IN THE WELL BORE ON THE FIRST TUBULAR STRING.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |