Patent US3260112A successfully refreshed from Google Patents.
US3260112A
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Temperature-recording device and method
Assignee: Mobil Oil AS
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Filing: 1963-08-05
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Granted: 1966-07-12
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Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 John K Godbey
- 👤 Hayden D Hodges
- 👤 Ralph F Burdyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:30
CPC Classifications
G; G01; G01K; G01K11/00; G01K11/06; Y; Y10; Y10T; Y10T408/00; Y10T408/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A DEVICE FOR MEASURING THE PEAK TEMPERATURE OF DRILLING FLUID AT DYNAMIC CIRCULATING CONDITIONS DURING THE DRILLING OF A WELL WITH FLUID-CIRCULATING BITS COMPRISING A CASING OF AN ABRASION-RESISTANT MATERIAL WITH SUFFICIENT STRENGTH TO PREVENT THE ABRASIVE FORCES ENCOUNTERED IN FLUID CIRCULATION IN A WELL FORM DAMAGING A TEMPREATUREINDICATING MEANS CARRIED THEREIN, AND SAID CASING HAVING AT LEAST ONE DIMENSION OF A SIZE SUFFICIENT TO PASS THE CASING THROUGH THE CIRCULATING OPENINGS IN A DRILL BIT, A TEMPERATURE-INDICATING MEANS FOR PROVIDING A PERMANENT CHANGE IN INDICIA WHEN SUBJECTED TO A PREDETERMINED TEMPERATURE DISPOSED WITHIN THE CASING, AND MEANS COOPERATING WITH THE CASING FOR SECURING THE TEMPERATURE-INDICATING MEANS WITHIN THE CASING.
Claim 2
Independent Claim
110 words
A DEVICE FOR MEASURING THE PEAK TEMPERATURE OF DRILLING FLUID AT DYNAMIC CIRCULATING CONDITIONS DURING THE DRILLING OF A WELL WITH FLUID-CIRCULATING BITS COMPRISING A CASING OF AN ABRASION-RESISTANT MATERIAL WITH SUFFICIENT STRENGTH TO PREVENT THE ABRASIVE FORCES ENCOUNTERED IN FLUID CIRCULATION IN A WELL FORM DAMAGING A TEMPREATUREINDICATING MEANS CARRIED THEREIN, AND SAID CASING HAVING AT LEAST ONE DIMENSION OF A SIZE SUFFICIENT TO PASS THE CASING THROUGH THE CIRCULATING OPENINGS IN A DRILL BIT, A TEMPERATURE-INDICATING MEANS FOR PROVIDING A PERMANENT CHANGE IN INDICIA WHEN SUBJECTED TO A PREDETERMINED TEMPERATURE DISPOSED WITHIN THE CASING, AND MEANS COOPERATING WITH THE CASING FOR SECURING THE TEMPERATURE-INDICATING MEANS WITHIN THE CASING.
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |