US3193010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cementing multiple pipe strings in well bores
Assignee: ExxonMobil Upstream Research Co
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Filing: 1963-07-10
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Granted: 1965-07-06
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Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Walter J Bielstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:38
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A WELL OPERATION WHEREIN A PLURALITY OF PIPE STRINGS ARE RUN INTO A WELL BORE AT LEAST PARTIALLY FILLED WITH DRILLING FLUID TO COEXTEND SIDE-BY-SIDE THEREIN FROM THE EARTH''S SURFACE, AND WHEREIN A CEMENTITIOUS FLUID IS PUMPED DOWN ONE OF THE PIPE STRINGS AND UP THE ANNULUS THEREAROUND TO BOND THE PIPE STRINGS TO THE SIDES OF THE WELL BORE, THE IMPROVEMENT COMPRISING: ENTRAINING A GASIFORM FLUID THROUGH AT LEAST THE LOWER PORTION OF THE DRILLING FLUID IN THE ANNULUS AROUND THE PIPE STRINGS AND IN THE SPACE BETWEEN THE PIPE STRINGS; AND PUMPING A BANK OF SAID GASIFORM FLUID DOWN ONE OF THE PIPE STRINGS SUFFICIENT IN VOLUME TO FORM A GASEOUS BANK BETWEEN THE CEMENTITIOUS FLUID AND THE DRILLING FLUID.
Claim 2
Dependent Claim
123 words
IN A WELL OPERATION WHEREIN A PLURALITY OF PIPE STRINGS ARE RUN INTO A WELL BORE AT LEAST PARTIALLY FILLED WITH DRILLING FLUID TO COEXTEND SIDE-BY-SIDE THEREIN FROM THE EARTH''S SURFACE, AND WHEREIN A CEMENTITIOUS FLUID IS PUMPED DOWN ONE OF THE PIPE STRINGS AND UP THE ANNULUS THEREAROUND TO BOND THE PIPE STRINGS TO THE SIDES OF THE WELL BORE, THE IMPROVEMENT COMPRISING: ENTRAINING A GASIFORM FLUID THROUGH AT LEAST THE LOWER PORTION OF THE DRILLING FLUID IN THE ANNULUS AROUND THE PIPE STRINGS AND IN THE SPACE BETWEEN THE PIPE STRINGS; AND PUMPING A BANK OF SAID GASIFORM FLUID DOWN ONE OF THE PIPE STRINGS SUFFICIENT IN VOLUME TO FORM A GASEOUS BANK BETWEEN THE CEMENTITIOUS FLUID AND THE DRILLING FLUID.
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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |