US3766982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the in-situ treatment of hydrocarbonaceous materials
Assignee: JUSTHEIM PETROL CO
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Filing: 1971-12-27
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Granted: 1973-10-23
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Expires: 1991-12-27
Abstract
Abstract In-situ treatment of oil shale or other hydrocarbonaceous material by an inexpensive hot gaseous fluid, such as air or flue gas, as a heat transfer agent to volatilize kerogen or other hydrocarbonaceous matter and preferably also as a carrier of sufficient heat to crack and fissure the material to make it permeable to gas flow therethrough. Recovery of the volatilized hydrocarbonaceous material is through one or more bore holes remote from the location of hot gas introduction and aided by at least, but preferably, partial hydrogenation within a localized zone between location or locations of hot gas introduction and the one or more bore holes, preferably adjoining the latter.
Inventors
- 👤 C Justheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:30
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/243
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
16 words
A method in accordance with claim 1, wherein the deposit of hydrocarbonaceous material is oil shale.
Claim 2
Dependent Claim
45 words
A method in accordance with claim 2, wherein the oil shale in the distillation area of the deposit is rendered permeable to the flow of gas and vapors therethrough by heating the heat-exchange gas to substantially 2,000*F. prior to injection thereof into the said area.
Claim 3
Dependent Claim
21 words
A method in accordance with claim 1, wherein the temperature maintained in the hydrogenation zone is between about 1,200*F. and 1,250*F.
Claim 4
Dependent Claim
13 words
A method in accordance with claim 1, wherein the heat-exchange gas is air.
Claim 5
Dependent Claim
39 words
A method in accordance with claim 5, wherein the quantity of hydrogen gas injected into the hydrogenation zone is such that the mixture of air and hydrogen gas contains less than 4 percent or more than 74 percent hydrogen.
Claim 6
Dependent Claim
31 words
A method in accordance with claim 1, wherein at least one set of paired injection and vapor recovery bore holes are utilized for heat-exchange gas injection and hydrogenated vapor withdrawal, respectively.
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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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |