Patent US3276966A successfully refreshed from Google Patents.
US3276966A
Expired / Lapsed
US
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Process for treating used oil and gas well drilling liquids to recover the desired components thereof in a dry powder form
Assignee: Individual
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Filing: 1962-10-15
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Granted: 1966-10-04
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 Charlie F Talbot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:35
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/06; E21B21/063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
AMETHOD FOR THE RECLAMATION OF USED OIL AND GAS RULLING LIQUIDS WITH COMPONENT MINERALS AND CHEMICALS IN A DRY UNDAMAGED STATE, WHICH MAY BE RECONSTITUTED FOR USE IN SUBSEQUENT DRILLING OPERATIONS COMPRISING THE STEPS IN THE ORDER NAMED: (A) SEPARATING TRASH FROM THE USDE OIL AND GAS WELL DRILLING LIQUIDS, (B) CONDUCTING THELIQUIDS TO A SPRAY DRYER AND DRYING THEM AT A TEMPERATURE SO THAT THE TEMPERATURE OF THE DRIED PRODUCT DOES NOT EXCEED APPROXIMATELY 350*F., AND (C) SECREENING THE DRIED PRODUCT TO REMOVE FOSSILS AND FINE CUTTINGS FROM THE DRIED PRODUCT.
Claim 2
Dependent Claim
92 words
AMETHOD FOR THE RECLAMATION OF USED OIL AND GAS RULLING LIQUIDS WITH COMPONENT MINERALS AND CHEMICALS IN A DRY UNDAMAGED STATE, WHICH MAY BE RECONSTITUTED FOR USE IN SUBSEQUENT DRILLING OPERATIONS COMPRISING THE STEPS IN THE ORDER NAMED: (A) SEPARATING TRASH FROM THE USDE OIL AND GAS WELL DRILLING LIQUIDS, (B) CONDUCTING THELIQUIDS TO A SPRAY DRYER AND DRYING THEM AT A TEMPERATURE SO THAT THE TEMPERATURE OF THE DRIED PRODUCT DOES NOT EXCEED APPROXIMATELY 350*F., AND (C) SECREENING THE DRIED PRODUCT TO REMOVE FOSSILS AND FINE CUTTINGS FROM THE DRIED PRODUCT.
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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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |