US3745822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining temperature distribution around a well
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1970-04-02
•
Granted: 1973-07-17
•
Expires: 1990-04-02
Abstract
Abstract This application discloses methods and apparatus for making temperature measurements around the circumference of a well to determine the presence and orientation of temperature gradients existing in the well. The preferred embodiment of the apparatus includes a temperature sensor assembly having multiple temperature probes which contact the well at points on its circumference and measure the differential temperature between these locations. The apparatus also includes a rotator assembly for moving the temperature sensor about its vertical axis for additional, subsequent temperature measurements. The apparatus further includes an orientation device for determining the direction or azimuth of the locations at which the differential temperature measurements are made.
Inventors
- 👤 A Pierce
- 👤 C Cooke
- 👤 W Burns
- 👤 J Hillestad
- 👤 A Spillette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:53
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/14; G01K1/146; E; E21; E21B; E21B47/00; E21B47/06; E21B47/07
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
148 words
An apparatus adapted to be lowered into a well for measuring the temperature distribution around the circumference of the well which comprises means for measuring the differential temperature existing between a plurality of circumferentially spaced locations on the wall of the well, said temperature measuring means comprising a temperature sensor assembly having at least three probe assemblies spaced about the vertical axis of the temperature sensor assembly, said probe assemblies having means for measuring the temperature of the wall of the well at said circumferentially spaced locations and being electrically interconnected to determine the differential temperature between said circumferentially spaced locatons, said temperature sensor assembly includes means for extending said probe assemblies to contact the wall of the well and for retracting said probe assemblies into the temperature sensor assembly and means operatively interconnected with said temprature measuring means for determining the orientation of said circumferentially spaced locations.
Claim 2
Independent Claim
148 words
An apparatus adapted to be lowered into a well for measuring the temperature distribution around the circumference of the well which comprises means for measuring the differential temperature existing between a plurality of circumferentially spaced locations on the wall of the well, said temperature measuring means comprising a temperature sensor assembly having at least three probe assemblies spaced about the vertical axis of the temperature sensor assembly, said probe assemblies having means for measuring the temperature of the wall of the well at said circumferentially spaced locations and being electrically interconnected to determine the differential temperature between said circumferentially spaced locatons, said temperature sensor assembly includes means for extending said probe assemblies to contact the wall of the well and for retracting said probe assemblies into the temperature sensor assembly and means operatively interconnected with said temprature measuring means for determining the orientation of said circumferentially spaced locations.
Claim 3
Independent Claim
135 words
An apparatus adapted to be lowered into a well for measuring the temperature distribution around the circumference of the well which comprises means for measuring the differential temperature existing bEtween a plurality of circumferentially spaced locations on the wall of the well, said temperature measuring means comprising a temperature sensor assembly having a plurality of probe assemblies spaced about the vertical axis of said sensor assembly with means for determining the temperature of the wall of the well and means for rotating said temperature assembly about the vertical axis of said assembly to determine the temperature of the wall of the well at said circumferentially spaced location, said temperature sensor assembly having at least three probe assemblies, and means operatively interconnected with said temperature measuring means for determining the orientation of said circumferentially spaced locations.
Claim 4
Independent Claim
135 words
An apparatus adapted to be lowered into a well for measuring the temperature distribution around the circumference of the well which comprises means for measuring the differential temperature existing bEtween a plurality of circumferentially spaced locations on the wall of the well, said temperature measuring means comprising a temperature sensor assembly having a plurality of probe assemblies spaced about the vertical axis of said sensor assembly with means for determining the temperature of the wall of the well and means for rotating said temperature assembly about the vertical axis of said assembly to determine the temperature of the wall of the well at said circumferentially spaced location, said temperature sensor assembly having at least three probe assemblies, and means operatively interconnected with said temperature measuring means for determining the orientation of said circumferentially spaced locations.
Claim 5
Dependent Claim
36 words
An apparatus as defined by claim 2 wherein said temperature sensor assembly includes means for extending said probe assemblies to contact the wall of the well and for retracting said probe assemblies into the temperature assembly.
Claim 6
Dependent Claim
107 words
A combination adapted to be lowered into a well for measuring temperatures around the circumference of the wall of the well which comprises an apparatus adapted to be lowered into a well for measuring temperatures on the wall of the well at circumferentially spaced locations at about the same vertical level in the well which comprises a temperature sensor assembly including a plurality of probe assemblies spaced about the vertical axis of said sensor assembly and having means for measuring differential temperature between said circumferentially spaced locations at about the same point in time and means for rotating said apparatus about the vertical axis of the apparatus.
Claim 7
Dependent Claim
107 words
A combination adapted to be lowered into a well for measuring temperatures around the circumference of the wall of the well which comprises an apparatus adapted to be lowered into a well for measuring temperatures on the wall of the well at circumferentially spaced locations at about the same vertical level in the well which comprises a temperature sensor assembly including a plurality of probe assemblies spaced about the vertical axis of said sensor assembly and having means for measuring differential temperature between said circumferentially spaced locations at about the same point in time and means for rotating said apparatus about the vertical axis of the apparatus.
Claim 8
Independent Claim
113 words
An apparatus adapted to be lowered into a well for measuring the temperature distribution around the circumference of the well which comprises a temperature sensor assembly having a plurality of probe assemblies including means for measuring the differential temperatures between circumferentially spaced locations at about the same vertical level in the well at about the same point in time and having means for extending and retracting the probe assemblies into, and out of contact with, the wall of the well, means for rotating said temperature sensor assembly about the vertical axis of said sensor assembly, and means operatively interconnected with said temperature sensor assembly for measuring the orientation of said circumferentially spaced locations.
Claim 9
Independent Claim
113 words
An apparatus adapted to be lowered into a well for measuring the temperature distribution around the circumference of the well which comprises a temperature sensor assembly having a plurality of probe assemblies including means for measuring the differential temperatures between circumferentially spaced locations at about the same vertical level in the well at about the same point in time and having means for extending and retracting the probe assemblies into, and out of contact with, the wall of the well, means for rotating said temperature sensor assembly about the vertical axis of said sensor assembly, and means operatively interconnected with said temperature sensor assembly for measuring the orientation of said circumferentially spaced locations.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |