Patent US3636751A successfully refreshed from Google Patents.
US3636751A
Expired / Lapsed
US
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Radial flow cell
Assignee: United States Department of the Interior
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Filing: 1970-09-01
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Granted: 1972-01-25
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Expires: 1990-09-01
Abstract
Abstract A radial flow cell and associated method for measuring the directional permeability of a porous rock sample. While the sample is constrained in the flow cell, fluid under pressure is forced radially through it. Directional permeability is determined by comparing the relative amounts of fluid flowing out of the sample into distinct collecting areas.
Inventors
- 👤 Joseph Pasini
- 👤 William K Overbey Jr
- 👤 Franklin D Slagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:37
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/08; G01N15/082
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
107 words
A method for measuring the directional permeability of a porous sample comprising: forming a hollow chamber in a central portion of the sample, injecting a fluid under pressure into the hollow chamber to cause fluid to flow from the chamber through the sample, sealing selected surfaces of the sample to direct the fluid flow in only those directions for which directional permeability data is sought, dividing the outer surface of the sample into a series of distinct fluid collecting areas to isolate the fluid flowing from different segments of the sample, and measuring the isolated volumes of fluid that pass through the sample into each collecting area.
Claim 2
Independent Claim
107 words
A method for measuring the directional permeability of a porous sample comprising: forming a hollow chamber in a central portion of the sample, injecting a fluid under pressure into the hollow chamber to cause fluid to flow from the chamber through the sample, sealing selected surfaces of the sample to direct the fluid flow in only those directions for which directional permeability data is sought, dividing the outer surface of the sample into a series of distinct fluid collecting areas to isolate the fluid flowing from different segments of the sample, and measuring the isolated volumes of fluid that pass through the sample into each collecting area.
Claim 3
Independent Claim
107 words
An apparatus for measuring the directional permeability of a porous sample having a hollow central chamber comprising: means for injecting a fluid under pressure into the hollow central chamber to cause fluid to flow from the chamber to the outer surface of the sample, means for sealing selected surfaces of the sample to direct the fluid flow in only those directions for which directional permeability data is sought, means for dividing at least a portion of the outer surface of the sample into distinct fluid collecting areas, and means for measuring the volume of fluid flowing from the sample into each of the distinct fluid collecting areas.
Claim 4
Independent Claim
107 words
An apparatus for measuring the directional permeability of a porous sample having a hollow central chamber comprising: means for injecting a fluid under pressure into the hollow central chamber to cause fluid to flow from the chamber to the outer surface of the sample, means for sealing selected surfaces of the sample to direct the fluid flow in only those directions for which directional permeability data is sought, means for dividing at least a portion of the outer surface of the sample into distinct fluid collecting areas, and means for measuring the volume of fluid flowing from the sample into each of the distinct fluid collecting areas.
Claim 5
Dependent Claim
109 words
An apparatus, as claimed in claim 2, for measuring the directional permeability of a porous sample having a hollow central chamber and, in addition, opposed flat outer surfaces in which: the means for sealing further comprises a pair of spaced plates, a pair of intermediate resilient sheets, and means for clamping the opposed flat surfaces of the sample between the flat plates and resilient sheets, and the means for dividing further comprises a series of flat dividers, each having a knifelike edge for abutting a selected outer surface of the sample, and means for pressing the knifelike edges of the dividers against the selected outer surface of the sample.
Claim 6
Dependent Claim
129 words
An apparatus, as claimed in claim 3, for measuring the directional permeability of a porous sample having a hollow central chamber, opposed flat outer surfaces and, in addition, a circular cross section in which: the means for injecting includes a source of pressurized fluid communicating with an opening through one of the spaced plates, one of the spaced plates includes a circular array of radial slots for positioning the series of dividers adjacent to the surface of the sample, one of the spaced plates includes a circular array of holes with spacing similar to that of the circular array of radial slots, and the means for measuring the volume of fluid includes a circular array of collecting tubes positioned to receive fluid flowing through the circular array of holes.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |