Patent US4487257A successfully refreshed from Google Patents.
US4487257A
Expired / Lapsed
US
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Apparatus and method for production of organic products from kerogen
Assignee: Raytheon Co
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Filing: 1981-09-30
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Granted: 1984-12-11
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Expires: 2001-09-30
Abstract
Abstract Apparatus and a method of producing fluid organic products from kerogen in situ in a body of oil shale by the application of alternating electric fields having a frequency between 100 kilohertz and 100 megahertz to heat the kerogen in the oil shale to a temperature in the range of 200° C. to 360° C. and to maintain the kerogen in this temperature range for a period of time sufficient to convert a substantial portion of the kerogen in oil shale to fluid organic products which may be collected through passages produced in the oil shale formation by flowing to a well bore having a collection sump.
Inventors
- 👤 Thonet C. Dauphin/e/
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:50
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/2401; E21B43/17
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
88 words
Apparatus for producing organic liquid and/or gaseous products of dissociation of an organic compound in a subsurface body comprising: means for heating regions of said body to temperatures where said compound converts to said liquid and/or gaseous products comprising radiating means extending into said subsurface body for producing in said body time varying electric fields; and means for producing said fluid products of dissociation from said body comprising passage means for allowing the flow of said products through said body while said field is applied to said body.
Claim 2
Dependent Claim
88 words
Apparatus for producing organic liquid and/or gaseous products of dissociation of an organic compound in a subsurface body comprising: means for heating regions of said body to temperatures where said compound converts to said liquid and/or gaseous products comprising radiating means extending into said subsurface body for producing in said body time varying electric fields; and means for producing said fluid products of dissociation from said body comprising passage means for allowing the flow of said products through said body while said field is applied to said body.
Claim 3
Dependent Claim
30 words
Apparatus in accordance with claim 1 wherein: said field producing means comprises a structure extending into said subsurface body through an overburden and producing said electric fields in said body.
Claim 4
Dependent Claim
29 words
Apparatus in accordance with claim 1 wherein: said means for producing said fluid products further comprises means for injecting a fluid through said heating means into said subsurface body.
Claim 5
Dependent Claim
97 words
Apparatus for producing fluid products from kerogen contained in a subsurface body of oil shale comprising: means for heating regions of said body to temperatures below 360° C. where kerogen pyrolytically converts to fluid products comprising radiating means for subjecting said oil shale to a time varying electric field having a component whose frequency lies in the range between 100 kilohertz and 100 megahertz; means for producing and/or maintaining passages in said body during heating of said body with said fields; and means for collecting said fluid products pyrolytically converted from said kerogen flowing through said passages.
Claim 6
Dependent Claim
97 words
Apparatus for producing fluid products from kerogen contained in a subsurface body of oil shale comprising: means for heating regions of said body to temperatures below 360° C. where kerogen pyrolytically converts to fluid products comprising radiating means for subjecting said oil shale to a time varying electric field having a component whose frequency lies in the range between 100 kilohertz and 100 megahertz; means for producing and/or maintaining passages in said body during heating of said body with said fields; and means for collecting said fluid products pyrolytically converted from said kerogen flowing through said passages.
Claim 7
Dependent Claim
29 words
The apparatus in accordance with claim 4 wherein: said means for producing said electric field comprises a structure extending through an overburden into said body and comprising an electrode.
Claim 8
Dependent Claim
76 words
Apparatus for producing organic liquid and/or gaseous products of dissociation of an organic compound in a subsurface body comprising: means for heating regions of said body to temperatures where said compound converts to said liquid and/or gaseous products comprising radiating means extending into said subsurface body for producing in said body time varying electric fields; and means for producing fractures in said body through which the products of conversion of said kerogen flow to collecting means.
Claim 9
Dependent Claim
76 words
Apparatus for producing organic liquid and/or gaseous products of dissociation of an organic compound in a subsurface body comprising: means for heating regions of said body to temperatures where said compound converts to said liquid and/or gaseous products comprising radiating means extending into said subsurface body for producing in said body time varying electric fields; and means for producing fractures in said body through which the products of conversion of said kerogen flow to collecting means.
References Cited (Backward Citations)
GB321910A
Cited
US2757279A
Cited
US2795279A
Cited
US3133592A
Cited
US3141504A
Cited
US3497005A
Cited
US3696866A
Cited
US3848672A
Cited
US3948319A
Cited
US3989107A
Cited
US4008762A
Cited
US4135579A
Cited
US4193451A
Cited
US4144935A
Cited
US4302801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |