Patent US3244623A successfully refreshed from Google Patents.
US3244623A
Expired / Lapsed
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Drilling fluid composition and process
Assignee: Georgia-Pacific LLC
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Filing: 1962-11-08
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Granted: 1966-04-05
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Expires: 1982-11-08
Abstract
No abstract record available.
Inventors
- 👤 King Ellis Gray
- 👤 Adolphson Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:25
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/20; C09K8/203
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
64 words
A DRILLING FLUID COMPOSITION COMPRISING A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A SOLUBLE OXIDIZED SALT OF A SULFONATED LIGNIN-CONTAINING MATERIAL WHICH HAS BEEN HEAT TREATED AT A TEMPERATURE BETWEE ABOUT 170*C. AND 210*C. AND HIGHER TEMPERATURES, SAID SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF.
Claim 2
Dependent Claim
64 words
A DRILLING FLUID COMPOSITION COMPRISING A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A SOLUBLE OXIDIZED SALT OF A SULFONATED LIGNIN-CONTAINING MATERIAL WHICH HAS BEEN HEAT TREATED AT A TEMPERATURE BETWEE ABOUT 170*C. AND 210*C. AND HIGHER TEMPERATURES, SAID SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF.
Claim 3
Dependent Claim
63 words
A DRILLING FLUID COMPOSITION A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A SOLUBLE SALT OF A SULFONATED LIGNIN-CONTAINING MATERIAL WHICH HAS BEEN HEAT TREATED AT A TEMPERATURE BETWEEN ABOUT 170*C. AND 210*C. AND HIGHER TEMPERATURES, SAID SOLUBLE SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF.
Claim 4
Dependent Claim
63 words
A DRILLING FLUID COMPOSITION A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A SOLUBLE SALT OF A SULFONATED LIGNIN-CONTAINING MATERIAL WHICH HAS BEEN HEAT TREATED AT A TEMPERATURE BETWEEN ABOUT 170*C. AND 210*C. AND HIGHER TEMPERATURES, SAID SOLUBLE SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF.
Claim 5
Dependent Claim
65 words
A DRILLING FLUID COMPOSITION COMPRISING A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A SOLUBLE OXIDIZED SULFONATED LIGNIN-CONTAINING MATERIAL WHICH HAS BEEN TREATED AT A TEMPERATURE BETWEEN ABOUT 170*C. AND 210* C. AND HIGHER TEMPERATURES, SAID SULFONATED LIGNIN-CONTAINING MATERIAL BEING OXIDIZED WITH AN OXIDIZING AGENT HAVING AN OXIDIZING POWER STRONGER THAN AN OXIDATION POTENTIAL OF ABOUT -1.3.
Claim 6
Dependent Claim
65 words
A DRILLING FLUID COMPOSITION COMPRISING A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A SOLUBLE OXIDIZED SULFONATED LIGNIN-CONTAINING MATERIAL WHICH HAS BEEN TREATED AT A TEMPERATURE BETWEEN ABOUT 170*C. AND 210* C. AND HIGHER TEMPERATURES, SAID SULFONATED LIGNIN-CONTAINING MATERIAL BEING OXIDIZED WITH AN OXIDIZING AGENT HAVING AN OXIDIZING POWER STRONGER THAN AN OXIDATION POTENTIAL OF ABOUT -1.3.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |