Patent US2805719A successfully refreshed from Google Patents.
US2805719A
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High temperature well cementing
Assignee: Halliburton Oil Well Cementing Co
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Filing: 1955-09-15
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Granted: 1957-09-10
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Expires: 1975-09-15
Abstract
No abstract record available.
Inventors
- 👤 Francis M Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:58
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/5045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR CEMENTING A WELL OR OTHER EARTH FORMATION WHEREIN HIGH TEMPERATURES EXIST, IN WHICH THE CEMENT COMPOSITION WILL HAVE PROGRESSIVELY GREATER STRENGTH WHEN SITUATED IN SAID FORMATION, THE STEPS CONSISTING, MIXING WITH PORTLAND CEMENT A FLOUR OF SILICA IN PROPORTIONS OF 10% TO 75% BY WEIGHT OF THE TOTAL DRY MIXTURE, ADDING WATER SUFFICIENT TO FORM A FLUID SLURRY, PLACING SAID SLURRY IN A FORMATION WHEREIN TEMPERATURES ABOVE 200*F. EXIST, AND HOLDING SAID SLURRY IN SAID FORMATION UNTIL SETTING OCCURS.
Claim 2
Dependent Claim
82 words
A PROCESS FOR CEMENTING A WELL OR OTHER EARTH FORMATION WHEREIN HIGH TEMPERATURES EXIST, IN WHICH THE CEMENT COMPOSITION WILL HAVE PROGRESSIVELY GREATER STRENGTH WHEN SITUATED IN SAID FORMATION, THE STEPS CONSISTING, MIXING WITH PORTLAND CEMENT A FLOUR OF SILICA IN PROPORTIONS OF 10% TO 75% BY WEIGHT OF THE TOTAL DRY MIXTURE, ADDING WATER SUFFICIENT TO FORM A FLUID SLURRY, PLACING SAID SLURRY IN A FORMATION WHEREIN TEMPERATURES ABOVE 200*F. EXIST, AND HOLDING SAID SLURRY IN SAID FORMATION UNTIL SETTING OCCURS.
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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) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |