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Patent US3171480A successfully refreshed from Google Patents.
US3171480A
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Use of chemically-generated heat in a well cementing method
Assignee: Halliburton Co
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Filing: 1962-08-06
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Granted: 1965-03-02
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Expires: 1982-08-06
Abstract
No abstract record available.
Inventors
- 👤 Lloyd G Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:09
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/42; C04; C04B; C04B22/00; C04B22/02; C04B22/04; C04B40/00; C04B40/02; C04B40/0263; C09K8/46; C04B2111/00; C04B2111/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A METHOD OF CEMENTING WELLS UNDER RELATIVELY COLD CLIMATIC CONDITIONS, COMPRISING THE STEPS OF: (A) INTRODUCING A HYDRAULIC CEMENT SLURRY INTO A DESIRED POSITION IN A WELL BORE FOR CEMENTING A WELL CASING THEREIN; (B) PLACING A CEMENTING PLUG ON TOP OF THE CEMENT SLURRY;
Claim 2
Independent Claim
45 words
A METHOD OF CEMENTING WELLS UNDER RELATIVELY COLD CLIMATIC CONDITIONS, COMPRISING THE STEPS OF: (A) INTRODUCING A HYDRAULIC CEMENT SLURRY INTO A DESIRED POSITION IN A WELL BORE FOR CEMENTING A WELL CASING THEREIN; (B) PLACING A CEMENTING PLUG ON TOP OF THE CEMENT SLURRY;
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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |