Patent US1840706A successfully refreshed from Google Patents.
Patent US3103973A successfully refreshed from Google Patents.
US3103973A
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Chemical heating of a well or cavity and formation adjacent thereto
Assignee: Dow Chemical Co
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Filing: 1960-05-18
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Granted: 1963-09-17
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Expires: 1980-05-18
Abstract
No abstract record available.
Inventors
- 👤 Eugene D Mullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:23
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/42; Y; Y10; Y10S; Y10S166/00; Y10S166/901
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
IN A METHOD OF EFFECTING CEMENTATION IN THE BOREHOLE OF A WELL PENETRATING A SUBTERRANEAN FORMATION WHEREIN AN AQUEOUS HYDRAULIC CEMENT SLURRY IN PUMPED DOWN THE WELLBORE, THE IMPROVEMENT CONSISTING OF PUMPING DOWN THE WELLBORE AND SPOTTING THEREIN IN THE PROXIMITY OF SAID CEMENT SLURRY AND ADJACENT TO THE FORMATION WHERE THE CEMENTATION IS TO BE EFFECTED, AN AQUEOUS SOLUTION OF AN ACID AND AN HYDROXIIDE SELECTED FROM THE CLASS CONSISTING OF ALKALI METAL, AMMONIUM, AND ALKALINE EARTH METAL HYDROXIDES.
References Cited (Backward Citations)
US2163449A
Cited
US2217708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |