US3040822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing well drilling rate
Assignee: Jersey Production Research Co
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Filing: 1958-08-21
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Granted: 1962-06-26
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Expires: 1978-08-21
Abstract
No abstract record available.
Inventors
- 👤 John W Graham
- 👤 Nils L Muench
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:46
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/08; E21B21/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A METHOD FOR INCREASING WELL DRILLING RATE OVER THAT ACHIEVABLE WITH A SINGLE WELL DRILLING CIRCULATION LIQUID HAVING A DESIRED FILTER CAKE FORMING PROPERTY, A SELECTED VISCOSITY, AND A SELECTED DENSITY COMPRISING: INJECTING AT LEAST TWO LIQUIDS INTO A DRILL PIPE STRING SEQUENTIALLY AND CONTINUOUSLY WHILE ROTATING THE DRILL PIPE STRING AND DRILL BIT ATTACHED THERETO, THE LIQUIDS CIRCULATING DOWN THE DRILL PIPE STRING AND UP THE ANNULUS BETWEEN THE DRILL PIPE STRING AND THE WALL OF THE BOREHOLE BEING DRILLED; THE FREQUENCY OF INJECTION OF THE LIQUIDS BEING SUCH THAT SLUGS OF EACH LIQUID ARE LOCATED IN THE ANNULUS
Claim 2
Independent Claim
100 words
A METHOD FOR INCREASING WELL DRILLING RATE OVER THAT ACHIEVABLE WITH A SINGLE WELL DRILLING CIRCULATION LIQUID HAVING A DESIRED FILTER CAKE FORMING PROPERTY, A SELECTED VISCOSITY, AND A SELECTED DENSITY COMPRISING: INJECTING AT LEAST TWO LIQUIDS INTO A DRILL PIPE STRING SEQUENTIALLY AND CONTINUOUSLY WHILE ROTATING THE DRILL PIPE STRING AND DRILL BIT ATTACHED THERETO, THE LIQUIDS CIRCULATING DOWN THE DRILL PIPE STRING AND UP THE ANNULUS BETWEEN THE DRILL PIPE STRING AND THE WALL OF THE BOREHOLE BEING DRILLED; THE FREQUENCY OF INJECTION OF THE LIQUIDS BEING SUCH THAT SLUGS OF EACH LIQUID ARE LOCATED IN THE ANNULUS
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) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |