US3348612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cementing casing in oil-wet wells
Assignee: Mobil Oil AS
•
Filing: 1965-09-15
•
Granted: 1967-10-24
•
Expires: 1985-09-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph U Messenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:07
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/42; C09K8/424
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD OF CEMENTING CASING IN A WELL PENETRATING SUBTERRANEAN FORMATIONS WHICH COMPRISES THE STEPS OF: (A) FLOWING A SLUG OF LIQUID HAVING MUTUAL SOLUBILITY FOR OIL AND WATER THROUGH THE ANNULAR SPACE BETWEEN SAID CASING AND THE WALL OF SAID WELL; (B) FLOWING THROUGH SAID ANNULAR SPACE AND EMPLACING THEREIN A CEMENT SLURRY BETWEEN SAID CASING AND SAID WALL OF SAID WELL; AND (C) ALLOWING SAID CEMENT SLURRY TO SET AND FORM AN IMPERMEABLE CEMENT SHEATH BONDING SAID CASING TO SAID WALL OF SAID WELL.
Claim 2
Independent Claim
86 words
A METHOD OF CEMENTING CASING IN A WELL PENETRATING SUBTERRANEAN FORMATIONS WHICH COMPRISES THE STEPS OF: (A) FLOWING A SLUG OF LIQUID HAVING MUTUAL SOLUBILITY FOR OIL AND WATER THROUGH THE ANNULAR SPACE BETWEEN SAID CASING AND THE WALL OF SAID WELL; (B) FLOWING THROUGH SAID ANNULAR SPACE AND EMPLACING THEREIN A CEMENT SLURRY BETWEEN SAID CASING AND SAID WALL OF SAID WELL; AND (C) ALLOWING SAID CEMENT SLURRY TO SET AND FORM AN IMPERMEABLE CEMENT SHEATH BONDING SAID CASING TO SAID WALL OF SAID WELL.
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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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |