Patent US5836315A successfully refreshed from Google Patents.
US3862576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Geochemical exploration method
Assignee: Individual
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Filing: 1972-05-22
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Granted: 1975-01-28
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Expires: 1992-05-22
Abstract
Abstract A method of geochemical prospecting by locating areas of anomalously high concentrations of elements indicative of subsurface deposits such as hydrocarbons or radioactive minerals in which the presence of the indicative elements is detected by placing a gas reservoir in communication with the subsurface environment and allowing the elements to transfer under partial pressure from the subsurface environment to the gas pocket and then removing a sample of the gas pocket for analysis to determine the presence of the indicative element.
Inventors
- 👤 Louis August Pogorski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:19
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/02; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/25375; Y10T436/255
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
135 words
A method of geochemical prospecting by locating areas of anomalously high concentration of indicator constituent in the subsurface environment in which said concentration of indicator constituent is determined by presenting a pocket of known gas, entrapped in an open-bottomed, close-topped canister, having its open bottom in permeable or semi-permeable communication only with the subsurface environment so as to allow, and for sufficient time to allow, the indicator constituents in the subsurface soil to transfer to the gas pocket in the canister under the influence of its partial pressure gradient and thereafter analyzing the gas in said gas pocket to determinE the concentration of indicator constituent, in which the indicator constituent is helium, and in which said open bottom of said canister is enclosed by a membrane permeable to the indicator constituent and impermeable to liquids.
Claim 2
Independent Claim
135 words
A method of geochemical prospecting by locating areas of anomalously high concentration of indicator constituent in the subsurface environment in which said concentration of indicator constituent is determined by presenting a pocket of known gas, entrapped in an open-bottomed, close-topped canister, having its open bottom in permeable or semi-permeable communication only with the subsurface environment so as to allow, and for sufficient time to allow, the indicator constituents in the subsurface soil to transfer to the gas pocket in the canister under the influence of its partial pressure gradient and thereafter analyzing the gas in said gas pocket to determinE the concentration of indicator constituent, in which the indicator constituent is helium, and in which said open bottom of said canister is enclosed by a membrane permeable to the indicator constituent and impermeable to liquids.
Claim 3
Dependent Claim
41 words
A method as claimed in claim 1 in which said closed top of said canister has a puncturable septum, whereby contaminationfree extraction of the sample from the canister may be obtained by insertion of a sharpened end of a sampling vessel.
Claim 4
Dependent Claim
23 words
A method as claimed in claim 1 in which said canister is submerged in the soil or in the water overlying the soil.
Claim 5
Dependent Claim
23 words
A method as claimed in claim 2 in which said canister is submerged in the soil or in the water overlying the soil.
Claim 6
Independent Claim
83 words
A method of geochemical prospecting in areas overlain by water by locating areas of anomalously high concentration of indicator constituent, such as helium, in the subsurface environment in which said concentration of indicator constituent is determined by pumping a known gas through a tube material impermeable to liquids and permeable to the indicator constituent, while said tube is submerged in a body of water, and analyzing said known gas after it has been passed through tube to determine the concentration of indicator constituents.
Claim 7
Independent Claim
83 words
A method of geochemical prospecting in areas overlain by water by locating areas of anomalously high concentration of indicator constituent, such as helium, in the subsurface environment in which said concentration of indicator constituent is determined by pumping a known gas through a tube material impermeable to liquids and permeable to the indicator constituent, while said tube is submerged in a body of water, and analyzing said known gas after it has been passed through tube to determine the concentration of indicator constituents.
Claim 8
Dependent Claim
62 words
A method as claimed in claim 5 in which said known gas is air, said tube is in the order of 200 feet long and has an internal diameter in the order of 0.022 inch and a wall thickness in the order of 0.006 to 0.01 inch and said air is passed through said tube during a period of approximately 10 seconds.
References Cited (Backward Citations)
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Cited
US2330829A
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US2479787A
Cited
US3028313A
Cited
US3490288A
Cited
US3624710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |