Patent US3353593A successfully refreshed from Google Patents.
US3353593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam injection with clay stabilization
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1965-12-27
•
Granted: 1967-11-21
•
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 08:26
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)
US3123135A
Cited
US3042114A
Cited
US3141501A
Cited
US3193009A
Cited
US3259186A
Cited
US3292702A
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 |