US2871948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating oil and gas wells to increase production
Assignee: Normand Chemical Process Corp
•
Filing: 1955-06-23
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Granted: 1959-02-03
•
Expires: 1975-06-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph S Normand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:02
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
FOR EMPLOYMENT IN A WELL BORE HAVING A TUBING SUSPENDED THEREIN, A JET TUBE INCLUDING A TUBULAR MEMBER CONNECTABLE UPWARDLY TO THE LOWER END OF SAID TUBING AND HAVING A CLOSED LOWER END, VERTICALLY SPACED APART JET NOZZLES IN SAID JET TUBE AND EXTENDING THEREFROM, SPACED APART VALVES DIVIDING SAID JET TUBE INTO A PLURALITY OF VALVE SEGREGATED SECTIONS AND SET FROM TOP TO BOTTOM TO OPEN AT SUCCESSIVELY HIGHER PRESSURES, AND A SHIELD AROUND SAID JET TUBE OUTWARDLY OF SAID JET NOZZLES AND PROVIDING OPENINGS ADJACENT SAID JET NOZZLES THROUGH WHICH SAID JET NOZZLES MAY DISCHARGE A PRESSURIZED FLUID DELIVERED DOWN SAID TUBING TO BUILD UP PRESSURE IN EXCESS OF WELL BORE PRESSURE AND TO OPEN SAID VALVES SUCCESSIVELY FROM TOP TO BOTTOM.
Claim 2
Dependent Claim
124 words
FOR EMPLOYMENT IN A WELL BORE HAVING A TUBING SUSPENDED THEREIN, A JET TUBE INCLUDING A TUBULAR MEMBER CONNECTABLE UPWARDLY TO THE LOWER END OF SAID TUBING AND HAVING A CLOSED LOWER END, VERTICALLY SPACED APART JET NOZZLES IN SAID JET TUBE AND EXTENDING THEREFROM, SPACED APART VALVES DIVIDING SAID JET TUBE INTO A PLURALITY OF VALVE SEGREGATED SECTIONS AND SET FROM TOP TO BOTTOM TO OPEN AT SUCCESSIVELY HIGHER PRESSURES, AND A SHIELD AROUND SAID JET TUBE OUTWARDLY OF SAID JET NOZZLES AND PROVIDING OPENINGS ADJACENT SAID JET NOZZLES THROUGH WHICH SAID JET NOZZLES MAY DISCHARGE A PRESSURIZED FLUID DELIVERED DOWN SAID TUBING TO BUILD UP PRESSURE IN EXCESS OF WELL BORE PRESSURE AND TO OPEN SAID VALVES SUCCESSIVELY FROM TOP TO BOTTOM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |