Patent US3047494A successfully refreshed from Google Patents.
US3047494A
Expired / Lapsed
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Method of controlling the extra pressure lubrication of drilling muds
Assignee: Milwhite Mud Sales Co
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Filing: 1959-04-16
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Granted: 1962-07-31
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Expires: 1979-04-16
Abstract
No abstract record available.
Inventors
- 👤 William C Browning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:11
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A DRILLING MUD COMPOSITION CONSISTING ESSENTIALLY OF CLAY SOLIDS AND WEIGHTING AGENTS INA AN AQUEOUS PHASE, AT LEAST 5% OF A STABILIZING AGENT DISSOLVED IN THE AQUEOUS PHASE, SAID STABILIZING AGENT CONSISTING OF AT LEAST ONE SUITABLE MEMBER OF THE GROUP CONSISTING OF LIGNOSULFONATE, POLYPHENOLIC COMPOUNDS DERIVED FROM BARK EXTRACTS AND LIGNITE, AND FROM 1/4 TO 5 POUNDS PER BARREL OF MUD OF A WATER INSOLUBLE METALL SOAP DISPERSED IN THE AQUEOUS PHASE, SAID SOAP CONSISTING OF A METAL SALT OF AN ORGANIC ACID HAVING A CARBON CHAIN LENGTH OF 5 TO 29, SAID METAL CONSISTING OF AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF THE ALKALINE EARTH METALS, ALUMINUM AND THE GROUP FOUR AND GROUP EIGHT METALS OF THE PERIODIC TABLE.
Claim 2
Dependent Claim
123 words
A DRILLING MUD COMPOSITION CONSISTING ESSENTIALLY OF CLAY SOLIDS AND WEIGHTING AGENTS INA AN AQUEOUS PHASE, AT LEAST 5% OF A STABILIZING AGENT DISSOLVED IN THE AQUEOUS PHASE, SAID STABILIZING AGENT CONSISTING OF AT LEAST ONE SUITABLE MEMBER OF THE GROUP CONSISTING OF LIGNOSULFONATE, POLYPHENOLIC COMPOUNDS DERIVED FROM BARK EXTRACTS AND LIGNITE, AND FROM 1/4 TO 5 POUNDS PER BARREL OF MUD OF A WATER INSOLUBLE METALL SOAP DISPERSED IN THE AQUEOUS PHASE, SAID SOAP CONSISTING OF A METAL SALT OF AN ORGANIC ACID HAVING A CARBON CHAIN LENGTH OF 5 TO 29, SAID METAL CONSISTING OF AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF THE ALKALINE EARTH METALS, ALUMINUM AND THE GROUP FOUR AND GROUP EIGHT METALS OF THE PERIODIC TABLE.
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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) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |