Patent US3198257A successfully refreshed from Google Patents.
US3198257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple zone selective cross-over apparatus
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1962-12-27
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Granted: 1965-08-03
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Expires: 1982-12-27
Abstract
No abstract record available.
Inventors
- 👤 William D Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:36
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
IN APPARATUS TO BE DISPOSED IN A WELL BORE HAVING UPPER AND LOWER PRODUCING ZONES AND IN WHICH ONE ZONE IS TO BE PRODUCED THROUGH A TUBULAR STRING DISPOSED IN THE WELL BORE AND THE OTHER ZONE THROUGH A REGION EXTERNALLY OF THE TUBULAR STRING: TUBULAR BODY MEANS ADAPTED TO FORM PART OF THE TUBULAR STRING; MANDREL MEANS SECURED WITHIN SAID BODY MEANS AGAINST SUBSTANTIAL LONGITUDINAL MOVEMENT WITH RESPECT THERETO AND PROVIDING THEREWITH SEPARATE PASSAGES ADAPTED TO CONDUCT FLUIDS FROM THE UPPER AND LOWER ZONES TO THE INTERIOR OF THE TUBULAR STRING ABOVE SAID BODY MEANS AND TO THE REGION EXTERNALLY OF THE TUBULAR STRING; AND VALVE MEANS SHIFTABLY MOUNTED IN SAID TUBULAR BODY MEANS TO CONTROL FLOW OF FLUIDS THROUGH SAID PASSAGES, SAID VALVE MEANS BEING POSITIONABLE IN SAID BODY MEANS IN ONE LOCATION FOR CONDUCTING FLUIDS SEPARATELY FROM THE LOWER ZONE TO SAID INTERIOR OF THE TUBULAR STRING AND FROM THE UPPER ZONE TO SAID REGION AND POSITIONABLE IN SAID BODY MEANS IN ANOTHER LOCATION FOR CONDUCTING FLUIDS SEPARATELY FROM THE LOWER ZONE TO SAID REGION AND FROM THE UPPER ZONE TO SAID INTERIOR OF TO THE TUBULAR STRING.
Claim 2
Dependent Claim
191 words
IN APPARATUS TO BE DISPOSED IN A WELL BORE HAVING UPPER AND LOWER PRODUCING ZONES AND IN WHICH ONE ZONE IS TO BE PRODUCED THROUGH A TUBULAR STRING DISPOSED IN THE WELL BORE AND THE OTHER ZONE THROUGH A REGION EXTERNALLY OF THE TUBULAR STRING: TUBULAR BODY MEANS ADAPTED TO FORM PART OF THE TUBULAR STRING; MANDREL MEANS SECURED WITHIN SAID BODY MEANS AGAINST SUBSTANTIAL LONGITUDINAL MOVEMENT WITH RESPECT THERETO AND PROVIDING THEREWITH SEPARATE PASSAGES ADAPTED TO CONDUCT FLUIDS FROM THE UPPER AND LOWER ZONES TO THE INTERIOR OF THE TUBULAR STRING ABOVE SAID BODY MEANS AND TO THE REGION EXTERNALLY OF THE TUBULAR STRING; AND VALVE MEANS SHIFTABLY MOUNTED IN SAID TUBULAR BODY MEANS TO CONTROL FLOW OF FLUIDS THROUGH SAID PASSAGES, SAID VALVE MEANS BEING POSITIONABLE IN SAID BODY MEANS IN ONE LOCATION FOR CONDUCTING FLUIDS SEPARATELY FROM THE LOWER ZONE TO SAID INTERIOR OF THE TUBULAR STRING AND FROM THE UPPER ZONE TO SAID REGION AND POSITIONABLE IN SAID BODY MEANS IN ANOTHER LOCATION FOR CONDUCTING FLUIDS SEPARATELY FROM THE LOWER ZONE TO SAID REGION AND FROM THE UPPER ZONE TO SAID INTERIOR OF TO THE 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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |