US3094175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well drilling apparatus and method
Assignee: WELL COMPLETIONS Inc
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Filing: 1959-09-15
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Granted: 1963-06-18
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Expires: 1979-09-15
Abstract
No abstract record available.
Inventors
- 👤 Jackson John Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:58
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/14; E21B21/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN THE METHOD OF DRILLING OIL AND GAS WELLS: DRILLING A BORE HOLE WITH A DRILL STRING HAVING A BIT AT THE LOWER END; INTRODUCING AN AIR AND LIQUID DRILLING FLUID UNDER PRESSURE INTO THE DRILL STRING; CENTRIFUGALLY SEPARATING THE AIR AND LIQUID AT A LOCATION ABOVE BUT ADJACENT TO THE DRILLING BIT AND DISCHARGING THE LIQUID OUTWARDLY INTO THE ANNULUS ABOUT THE DRILL STRING, THE GAS BEING COLLECTED IN A CENTRAL REGION; AND PASSING THE AIR DOWNWARDLY AND ABOUT THE CUTTER ELEMENTS OF THE BIT, SAID AIR WITH ENTRAINED CUTTINGS PASSING UPWARDLY INTO THE LIQUID DISCHARGED INTO SAID ANNULUS.
Claim 2
Dependent Claim
100 words
IN THE METHOD OF DRILLING OIL AND GAS WELLS: DRILLING A BORE HOLE WITH A DRILL STRING HAVING A BIT AT THE LOWER END; INTRODUCING AN AIR AND LIQUID DRILLING FLUID UNDER PRESSURE INTO THE DRILL STRING; CENTRIFUGALLY SEPARATING THE AIR AND LIQUID AT A LOCATION ABOVE BUT ADJACENT TO THE DRILLING BIT AND DISCHARGING THE LIQUID OUTWARDLY INTO THE ANNULUS ABOUT THE DRILL STRING, THE GAS BEING COLLECTED IN A CENTRAL REGION; AND PASSING THE AIR DOWNWARDLY AND ABOUT THE CUTTER ELEMENTS OF THE BIT, SAID AIR WITH ENTRAINED CUTTINGS PASSING UPWARDLY INTO THE LIQUID DISCHARGED INTO SAID ANNULUS.
References Cited (Backward Citations)
US762808A
Cited
US2494427A
Cited
US2485098A
Cited
US2705053A
Cited
US2872985A
Cited
US2920872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |