Patent US4626265A successfully refreshed from Google Patents.
Patent US3081033A successfully refreshed from Google Patents.
US3081033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test unit
Assignee: Petroleum Research Corp
•
Filing: 1959-01-29
•
Granted: 1963-03-12
•
Expires: 1979-01-29
Abstract
No abstract record available.
Inventors
- 👤 William A Colburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:30
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/32; G06G7/38; G06G7/40; G06G7/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
AN ELECTRIC ANALOG MODEL FOR THE DETERMINATION OF THE PRESSURE DISTRIBUTION AND FLOW CHARACTERISTICS OF A FLUID RESERVOIR AND WHEREIN THE TRANSMISSIBILITY IS REPRESENTED BY THE ELECTRICAL RESISTANCE AND THE EFFECTIVE POROSITY OF THE RESERVOIR AND THE COMPRESSIBILITY OF THE RESERVOIR FLUIDS ARE REPRESENTED BY ELECTRICAL CAPACITANCE, WHICH COMPRISES AN ELECTRICAL CONDUCTING BODY HAVING A SURFACE AREA OF THE SAME SHAPE AS AN AREA OF THE RESERVOIR TO BE STUDIED, A THIN LAYER OF DIELECTRIC MATERIAL COVERING SAID SURFACE AREA, A LAYER OF ELECTRICAL RESISTANCE MATERIAL COATING SAID DIELECTRIC LAYER AND SEPARATED FROM SAID BODY THEREBY, AND ELECTRODE MEANS FOR ESTABLISHING CONTACTS WITH ANY SELECTED PAIR OF POINTS ON SAID ELECTRICAL RESISTANCE LAYER WHEREBY THE RESISTANCE AND CAPACITANCE BETWEEN SAID POINTS MAY BE MEASURED AND THE PRESSURE AND FLUID FLOW CHARACTERISTICS BETWEEN SAID POINTS MAY BE DETERMINED.
Claim 2
Dependent Claim
137 words
AN ELECTRIC ANALOG MODEL FOR THE DETERMINATION OF THE PRESSURE DISTRIBUTION AND FLOW CHARACTERISTICS OF A FLUID RESERVOIR AND WHEREIN THE TRANSMISSIBILITY IS REPRESENTED BY THE ELECTRICAL RESISTANCE AND THE EFFECTIVE POROSITY OF THE RESERVOIR AND THE COMPRESSIBILITY OF THE RESERVOIR FLUIDS ARE REPRESENTED BY ELECTRICAL CAPACITANCE, WHICH COMPRISES AN ELECTRICAL CONDUCTING BODY HAVING A SURFACE AREA OF THE SAME SHAPE AS AN AREA OF THE RESERVOIR TO BE STUDIED, A THIN LAYER OF DIELECTRIC MATERIAL COVERING SAID SURFACE AREA, A LAYER OF ELECTRICAL RESISTANCE MATERIAL COATING SAID DIELECTRIC LAYER AND SEPARATED FROM SAID BODY THEREBY, AND ELECTRODE MEANS FOR ESTABLISHING CONTACTS WITH ANY SELECTED PAIR OF POINTS ON SAID ELECTRICAL RESISTANCE LAYER WHEREBY THE RESISTANCE AND CAPACITANCE BETWEEN SAID POINTS MAY BE MEASURED AND THE PRESSURE AND FLUID FLOW CHARACTERISTICS BETWEEN SAID POINTS MAY BE DETERMINED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |