US3115576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling well fluid circulation by radioactivation of fluid elements
Assignee: Jersey Production Research Co
•
Filing: 1959-07-31
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Granted: 1963-12-24
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Expires: 1979-07-31
Abstract
No abstract record available.
Inventors
- 👤 James A Rickard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:42
CPC Classifications
G; G21; G21H; G21H5/00; G21H5/02; E; E21; E21B; E21B21/00; E21B21/08; E21B47/00; E21B47/10; E21B47/11; E21B47/111; G01; G01F; G01F1/00; G01F1/704; G01F1/7042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN THE DRILLING OF WELLS BY THE ROTARY METHOD WHERE A BALANCED CIRCULATION OF DRILLING FLUID IS MAINTAINED DURING DRILLING, THE METHOD OF DETERMINING ANY UNBALANCING OF THE CIRCULATING FLUID WHICH COMPRISES THE STEPS OF ARTIFICALLY CREATING RADIOACTIVE ELEMENTS IN THE DRILLING FLUID INPUT AND OUTPUT, DETECTING THE DECAY OF SAID RADIOACTIVE ELEMENTS IN THE INPUT AND OUTPUT, AND AUTOMATI-
Claim 2
Dependent Claim
60 words
IN THE DRILLING OF WELLS BY THE ROTARY METHOD WHERE A BALANCED CIRCULATION OF DRILLING FLUID IS MAINTAINED DURING DRILLING, THE METHOD OF DETERMINING ANY UNBALANCING OF THE CIRCULATING FLUID WHICH COMPRISES THE STEPS OF ARTIFICALLY CREATING RADIOACTIVE ELEMENTS IN THE DRILLING FLUID INPUT AND OUTPUT, DETECTING THE DECAY OF SAID RADIOACTIVE ELEMENTS IN THE INPUT AND OUTPUT, AND AUTOMATI-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |