US4093027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assisting the recovery of oil using steam
Assignee: Chevron USA Inc
•
Filing: 1976-12-01
•
Granted: 1978-06-06
•
Expires: 1996-12-01
Abstract
Abstract A method of improving hydrocarbon recovery from a hydrocarbon-bearing formation utilizing a steam drive from an injection well to a production well wherein the quality of the injected steam is maintained at a value between 35 and 45% to maximize the heat utilization of the steam.
Inventors
- 👤 Ezzat E. Gomaa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:30
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
In a method of assisting the recovery of hydrocarbons from a hydrocarbon-bearing formation wherein steam is injected through an injection well into a hydrocarbon-bearing formation to promote a flow of hydrocarbons to a production well for production therefrom, the improvement comprising maintaining the quality of the steam injected into the formation within a range of from 35 to 45%.
Claim 2
Dependent Claim
59 words
In a method of assisting the recovery of hydrocarbons from a hydrocarbon-bearing formation wherein steam is injected through an injection well into a hydrocarbon-bearing formation to promote a flow of hydrocarbons to a production well for production therefrom, the improvement comprising maintaining the quality of the steam injected into the formation within a range of from 35 to 45%.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the quality of steam is maintained at between 35 and 42%.
Claim 4
Dependent Claim
16 words
The method of claim 1 wherein the quality of steam is maintained at about 40% quality.
References Cited (Backward Citations)
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US3237692A
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US3262500A
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US3421583A
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US3499488A
Cited
US3476183A
Cited
US3483924A
Cited
US3477510A
Cited
US3500915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |