Patent US3090316A successfully refreshed from Google Patents.
US3090316A
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Gas lifting system
Assignee: Shell USA Inc
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Filing: 1961-11-24
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Granted: 1963-05-21
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Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 Norman E Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:11
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02; F04B47/04; E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A METHOD OF PRODUCING AN OIL WELL BY MEANS FO FLUID LIFTING, SAID OIL WELL HAVING A PRODUCTION STRING AND A STRING FOR INTRODUCING GAS INTO THE WELL, SAID METHOD COMPRISING: INTROUDUCING GAS INTO THE WELL TO INCREASE THE PRESSURE TO LIFT THE UPPERMOST OF A PLURALITY OF PLUNGERS DISPOSED AT THE BOTTOM OF THE WELL, CONTINUING TO INJECT SAID GAS TO TRANSPORT SAID PLUNGER AND THE SLUG OF OIL TRAPPED ABOVE IT TO THE SURFACE; CATCHING AND RETAINING THE PLUNGER AT THE SURFACE; INJECTING ADDITIONAL GAS TO RAISE THE NEXT PLUNGER AND CONTINUING TO INJECT THE GAS TO TRANSPORT SAID NEXT PLUNGER AND SLUG OF OIL TRAPPED ABOVE IT TO THE SURFACE, CATCHING AND RETAINING THE NEXT PLUNGER AT THE SURFACE; CONTINUING TO INJECT THE GAS UNTIL ALL OF THE PLUNGERS HAVE BEEN TRANSPORTED TO THE SURFACE DISCONTINUING THE INJECTION OF GAS AND PERMITTING ALL OF THE PLUNGERS TO FALL TO THE BOTTOM OF THE WELL AS A GROUP.
Claim 2
Independent Claim
160 words
A METHOD OF PRODUCING AN OIL WELL BY MEANS FO FLUID LIFTING, SAID OIL WELL HAVING A PRODUCTION STRING AND A STRING FOR INTRODUCING GAS INTO THE WELL, SAID METHOD COMPRISING: INTROUDUCING GAS INTO THE WELL TO INCREASE THE PRESSURE TO LIFT THE UPPERMOST OF A PLURALITY OF PLUNGERS DISPOSED AT THE BOTTOM OF THE WELL, CONTINUING TO INJECT SAID GAS TO TRANSPORT SAID PLUNGER AND THE SLUG OF OIL TRAPPED ABOVE IT TO THE SURFACE; CATCHING AND RETAINING THE PLUNGER AT THE SURFACE; INJECTING ADDITIONAL GAS TO RAISE THE NEXT PLUNGER AND CONTINUING TO INJECT THE GAS TO TRANSPORT SAID NEXT PLUNGER AND SLUG OF OIL TRAPPED ABOVE IT TO THE SURFACE, CATCHING AND RETAINING THE NEXT PLUNGER AT THE SURFACE; CONTINUING TO INJECT THE GAS UNTIL ALL OF THE PLUNGERS HAVE BEEN TRANSPORTED TO THE SURFACE DISCONTINUING THE INJECTION OF GAS AND PERMITTING ALL OF THE PLUNGERS TO FALL TO THE BOTTOM OF THE WELL AS A GROUP.
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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |