US3353593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam injection with clay stabilization
Assignee: ExxonMobil Upstream Research Co
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Filing: 1965-12-27
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Granted: 1967-11-21
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Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Boberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:29
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; C; C09; C09K; C09K8/00; C09K8/58; C09K8/592
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A THERMAL METHOD FOR THE RECOVERY OF OIL FROM A POROUS SUBTERRANEAN OIL-BEARING RESERVOIR WHICH COMPRISES IN COMBINATION THE STEPS OF SOFTENING HARD WATER BY EXCHANGING MONOVALENT CATIONS FOR AT LEAST A PORTION OF THE CATIONS WHICH CONTRIBUTE TO THE HARDNESS OF SAID WATER, GENERATING STEAM FROM AT LEAST A PORTION OF THE RESULTING SOFT WATER, INJECTING AT LEAST A PORTION OF SAID STEAM INTO THE RESERVOIR, AND ALSO INJECTING INTO THE RESERVOIR AT LEAST A PORTION OF THE CATIONS REMOVED FROM SAID HARD WATER AND PRODUCING OIL FROM SAID RESERVOIR.
Claim 2
Dependent Claim
91 words
A THERMAL METHOD FOR THE RECOVERY OF OIL FROM A POROUS SUBTERRANEAN OIL-BEARING RESERVOIR WHICH COMPRISES IN COMBINATION THE STEPS OF SOFTENING HARD WATER BY EXCHANGING MONOVALENT CATIONS FOR AT LEAST A PORTION OF THE CATIONS WHICH CONTRIBUTE TO THE HARDNESS OF SAID WATER, GENERATING STEAM FROM AT LEAST A PORTION OF THE RESULTING SOFT WATER, INJECTING AT LEAST A PORTION OF SAID STEAM INTO THE RESERVOIR, AND ALSO INJECTING INTO THE RESERVOIR AT LEAST A PORTION OF THE CATIONS REMOVED FROM SAID HARD WATER AND PRODUCING OIL FROM SAID RESERVOIR.
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |