US4110224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary recovery process utilizing water saturated with gas
Assignee: Texaco Inc
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Filing: 1977-05-27
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Granted: 1978-08-29
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Expires: 1997-05-27
Abstract
Abstract Hydrocarbons are recovered from subterranean formations by injecting into a hydrocarbon bearing formation via an injection well a fluid comprising water saturated with a gas such as natural gas, carbon dioxide, etc., forcing the said fluid through the formation and recovering hydrocarbons through a production well. The fluids employed may contain a solubilizing agent and/or an alkaline agent.
Inventors
- 👤 Joseph C. Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:58
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/594; C09K8/584; E; E21; E21B; E21B43/00; E21B43/16; E21B43/164; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A fluid comprising water saturated with a gas selected from the group consisting of natural gas, carbon dioxide, ammonia, flue gas and mixtures thereof containing a minor amount of a solubilizing agent consisting of a compound of the formula: ##STR8## wherein R' is alkylene of from about 2 to 5 carbon atoms and d is an integer of from about 5 to about 50, wherein said fluid is made alkaline through the addition of an alkaline agent selected from the group consisting of sodium hydroxide, potassium hydroxide and sodium hypochlorite.
Claim 2
Dependent Claim
90 words
A fluid comprising water saturated with a gas selected from the group consisting of natural gas, carbon dioxide, ammonia, flue gas and mixtures thereof containing a minor amount of a solubilizing agent consisting of a compound of the formula: ##STR8## wherein R' is alkylene of from about 2 to 5 carbon atoms and d is an integer of from about 5 to about 50, wherein said fluid is made alkaline through the addition of an alkaline agent selected from the group consisting of sodium hydroxide, potassium hydroxide and sodium hypochlorite.
Claim 3
Dependent Claim
23 words
The fluid of claim 1 wherein the said solubilizing agent is present in an amount of from 0.001 to about 0.25 weight percent.
Claim 4
Dependent Claim
18 words
The fluid of claim 1 wherein the said fluid is made alkaline through the addition of sodium hydroxide.
Claim 5
Dependent Claim
18 words
The fluid of claim 1 wherein the said fluid is made alkaline through the addition of sodium hypochlorite.
Claim 6
Dependent Claim
23 words
The fluid of claim 1 wherein the said alkaline agent is contained therein in the range of about 0.001 to about 0.5 molar.
Claim 7
Dependent Claim
39 words
The fluid of claim 1 wherein said solubilizing agent is present in an amount of from 0.001 to about 0.25 weight percent and said alkaline agent is contained therein in the range of about 0.001 to about 0.5 molar.
References Cited (Backward Citations)
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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) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |