Patent US3395759A successfully refreshed from Google Patents.
US3395759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tool pumpable through a flowline
Assignee: Mobil Oil AS
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Filing: 1966-09-09
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Granted: 1968-08-06
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Expires: 1986-09-09
Abstract
No abstract record available.
Inventors
- 👤 Jr William A Talley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:02
CPC Classifications
E; E21; E21B; E21B37/00; E21B37/02; E21B37/04; E21B23/00; E21B23/08; E21B23/10; E21B37/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A TOOL ADAPTED TO BE RECIPROCATIVELY PUMPED THROUGH A FLOWLINE UNDER PRESSURE COMPRISING: A PISTON SECTION FOR SLIDABLY SEALING SAID TOOL IN A FLOWLINE TO PERMIT SAID TOOL TO BE PUMPED THROUGH A FLOWLINE BY FLUID PRESURE APPLIED AT EITHER END OF SAID TOOL; A LONGITUDINAL BYPASS PASSAGE FULLY WITHIN SAID TOOL FOR BYPASSING SAID PISTON SECTION; FIRST VALVE MEANS ASSOCIATED WITH SAID BYPASS PASSAGE FOR PERMITTING A FLUID FLOW THROUGH SAID BYPASS PASSAGE OF SAID TOOL IN A FIRST DIRECTION, SAID FIRST VALVE MEANS INCLUDING MEANS FOR THE AUTOMATIC CLOSING THEREOF AGAINST FLUID FLOW THROUGH SAID BYPASS PASSAGE OF SAID TOOL IN A SECOND DIRECTION; AND SECOND CALIBRATED VALVE MEANS ASSOCIATED WITH THE SAID BYPASS PASSAGE, IN SERIES WITH SAID FIRST VALVE MEANS, FOR PERMITTING FLUID FLOW OF AT LEAST A MINIMUM PREDETERMINED PRESSURE THROUGH SAID BYPASS PASSAGE OF SAID TOOL, IN SAID FIRST DIRECTION, SAID SECOND VALVE MEANS INCLUDING MEANS FOR THE AUTOMATIC CLOSING THEREOF AGAINST FLUID FLOW THROUGH SAID BYPASS PASSAGE OF SAID TOOL IN SAID SECOND DIRECTION; SAID SECOND
Claim 2
Dependent Claim
173 words
A TOOL ADAPTED TO BE RECIPROCATIVELY PUMPED THROUGH A FLOWLINE UNDER PRESSURE COMPRISING: A PISTON SECTION FOR SLIDABLY SEALING SAID TOOL IN A FLOWLINE TO PERMIT SAID TOOL TO BE PUMPED THROUGH A FLOWLINE BY FLUID PRESURE APPLIED AT EITHER END OF SAID TOOL; A LONGITUDINAL BYPASS PASSAGE FULLY WITHIN SAID TOOL FOR BYPASSING SAID PISTON SECTION; FIRST VALVE MEANS ASSOCIATED WITH SAID BYPASS PASSAGE FOR PERMITTING A FLUID FLOW THROUGH SAID BYPASS PASSAGE OF SAID TOOL IN A FIRST DIRECTION, SAID FIRST VALVE MEANS INCLUDING MEANS FOR THE AUTOMATIC CLOSING THEREOF AGAINST FLUID FLOW THROUGH SAID BYPASS PASSAGE OF SAID TOOL IN A SECOND DIRECTION; AND SECOND CALIBRATED VALVE MEANS ASSOCIATED WITH THE SAID BYPASS PASSAGE, IN SERIES WITH SAID FIRST VALVE MEANS, FOR PERMITTING FLUID FLOW OF AT LEAST A MINIMUM PREDETERMINED PRESSURE THROUGH SAID BYPASS PASSAGE OF SAID TOOL, IN SAID FIRST DIRECTION, SAID SECOND VALVE MEANS INCLUDING MEANS FOR THE AUTOMATIC CLOSING THEREOF AGAINST FLUID FLOW THROUGH SAID BYPASS PASSAGE OF SAID TOOL IN SAID SECOND DIRECTION; SAID SECOND
References Cited (Backward Citations)
US2289109A
Cited
US2860356A
Cited
US3003560A
Cited
US3070167A
Cited
US3054647A
Cited
US3056156A
Cited
US3070169A
Cited
US3171487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |