Patent US3115187A successfully refreshed from Google Patents.
US3115187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of and apparatus for selectively producing fluids from a plurality of subsurface fluid zones
Assignee: Baker Hughes Holdings LLC
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Filing: 1959-04-27
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Granted: 1963-12-24
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Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Cicero C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:39
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
AN APPARATUS FOR SELECTIVELY PRODUCING FLUIDS FROM A PLURALITY OF FLUID PRODUCING ZONES INCLUDING, A PAIR OF PARALLEL TUBING STRINGS EXTENDING DOWNWARDLY WITHIN THE WELL BORE, A PLURALITY OF WELL PACKERS ON SAID STRINGS AND POSITIONED BETWEEN THE PRODUCING ZONES WHEN THE TUBING STRINGS ARE IN THE WELL BORE, WHEREBY SETTING OF THE WELL PACKERS SEPARATES SAID PRODUCING ZONES, NON-
Claim 2
Independent Claim
60 words
AN APPARATUS FOR SELECTIVELY PRODUCING FLUIDS FROM A PLURALITY OF FLUID PRODUCING ZONES INCLUDING, A PAIR OF PARALLEL TUBING STRINGS EXTENDING DOWNWARDLY WITHIN THE WELL BORE, A PLURALITY OF WELL PACKERS ON SAID STRINGS AND POSITIONED BETWEEN THE PRODUCING ZONES WHEN THE TUBING STRINGS ARE IN THE WELL BORE, WHEREBY SETTING OF THE WELL PACKERS SEPARATES SAID PRODUCING ZONES, NON-
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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |