US3049409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Testing for gas in well drilling fluid
Assignee: Warren Automatic Tool Co
•
Filing: 1959-07-27
•
Granted: 1962-08-14
•
Expires: 1979-07-27
Abstract
No abstract record available.
Inventors
- 👤 Ethell J Dower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:22
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62; G01N27/626
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
A METHOD FOR TESTING GAS IN OIL WELL DRILLING MUD INCLUDING SEPARATING ORGANIC GAS FROM DRILLING MUD AND UTILIZING A STREAM OF PRESSURE AIR AS A CARRIER OF THE SEPARATED ORGANIC GAS, MIXING THE STEAM WITH HYDROGEN FUEL ADJACENT A JET BURNER, BURNING THE MIXTURE AT THE JET BURNER, PASSING ELECTRIC CURRENT ACROSS A CIRCUIT GAP BRIDGED BY THE BURNING FLAME AND MEASURING CURRENT VARIATION IN THE CIRCUIT AS INDICATIVE OF CHARACTERISTICS OF THE ORGANIC GAS ENTRAINED WITH THE CARRIER AIR.
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) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |