US3278425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling fluid composition process and product
Assignee: Georgia-Pacific LLC
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Filing: 1963-01-11
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Granted: 1966-10-11
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Expires: 1983-01-11
Abstract
No abstract record available.
Inventors
- 👤 King Ellis Gray
- 👤 Adolphson Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:51
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
99 words
A DRILLING FLUID COMPOSITION COMPRISING A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAININ AN EFFECTIVE DISPERSING AMOUNT OF A PRODUCT OBTAINED FROM SULFONATED LIGNIN-CONTAINING MATERIAL BY FORMING A SALT OF A SULFONATED LIGNIN-CONTAINING MATERIAL WHICH HAS BEEN HEATED IN AQUEOUS SOLUTION UNDER ALKALINE CONDITIONS, SAID SALT HAVING A METAL ION SELECTED FROM A GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF, AND OXIDIZING SAID SALT WITH AN OXIDIZING AGENT HAVING AN OXIDIZING POWER STRONGER THAN AN OXIDATION POTENTIAL OF ABOUT -1.3 AT SUFFICIENTLY LOW CONCENTRATIONS AND RATE TO FORM A WATER SOLUBLE OXIDIZED PRODUCT.
Claim 2
Dependent Claim
99 words
A DRILLING FLUID COMPOSITION COMPRISING A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAININ AN EFFECTIVE DISPERSING AMOUNT OF A PRODUCT OBTAINED FROM SULFONATED LIGNIN-CONTAINING MATERIAL BY FORMING A SALT OF A SULFONATED LIGNIN-CONTAINING MATERIAL WHICH HAS BEEN HEATED IN AQUEOUS SOLUTION UNDER ALKALINE CONDITIONS, SAID SALT HAVING A METAL ION SELECTED FROM A GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF, AND OXIDIZING SAID SALT WITH AN OXIDIZING AGENT HAVING AN OXIDIZING POWER STRONGER THAN AN OXIDATION POTENTIAL OF ABOUT -1.3 AT SUFFICIENTLY LOW CONCENTRATIONS AND RATE TO FORM A WATER SOLUBLE OXIDIZED PRODUCT.
Claim 3
Dependent Claim
80 words
A DRILLING FLUID COMPOSITION COMPRISING A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A WATER SOLUBLE PRODUCT OBTAINED FROM SULFONATED LIGNIN-CONTAINING MATERIAL BY HEATING A SULFONATED LIGNIN-CONTAINING MATERIAL IN AN AQUEOUS SOLUTION ALKALINE CONDITIONS TO THEREBY FROM AN ALKALINE TREATED, WATER SOLUBLE SULFONATED LIGNIN-CONTAINING PRODUCT AND FORMING A SALT OF SAID SULFONATED LIGNIN-CONTAINING MATERIAL, SAID SALT-CONTAINING A METAL ION SELECTED FROM THE GROUP CONSISITING OF IRON, CHROMIUM, COPPER ALUMINUM AND MIXTURES THEREOF.
Claim 4
Dependent Claim
80 words
A DRILLING FLUID COMPOSITION COMPRISING A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A WATER SOLUBLE PRODUCT OBTAINED FROM SULFONATED LIGNIN-CONTAINING MATERIAL BY HEATING A SULFONATED LIGNIN-CONTAINING MATERIAL IN AN AQUEOUS SOLUTION ALKALINE CONDITIONS TO THEREBY FROM AN ALKALINE TREATED, WATER SOLUBLE SULFONATED LIGNIN-CONTAINING PRODUCT AND FORMING A SALT OF SAID SULFONATED LIGNIN-CONTAINING MATERIAL, SAID SALT-CONTAINING A METAL ION SELECTED FROM THE GROUP CONSISITING OF IRON, CHROMIUM, COPPER ALUMINUM AND MIXTURES THEREOF.
Claim 5
Dependent Claim
72 words
A DRILLING FLUID COMPOSITION COMPRISING A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A PRODUCT OBTAINED FROM SULFONATED LIGNIN-CONTAINING MATERIAL BY OXIDIZING A SULFONATED LIGNIN-CONTAINING MATERIAL WHICH HAS BEEN HEATED AN AQUEOUS SOLUTION UNDER ALKALINE CONDITIONS, WITH AN OXIDIZING AGENT HAVING AN OXIDIZING POWER STRONGER THAN AN OXIDATION POTENTIAL OF ABOUT -1.3 AT SUFFICIENTLY LOW CONCENTRATIONS AND RATE FROM A WATER SOLUBLE OXIDIZED PRODUCT.
Claim 6
Dependent Claim
72 words
A DRILLING FLUID COMPOSITION COMPRISING A SUSPENSION OF A CLAYEY MATERIAL IN AN AQUEOUS MEDIUM CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A PRODUCT OBTAINED FROM SULFONATED LIGNIN-CONTAINING MATERIAL BY OXIDIZING A SULFONATED LIGNIN-CONTAINING MATERIAL WHICH HAS BEEN HEATED AN AQUEOUS SOLUTION UNDER ALKALINE CONDITIONS, WITH AN OXIDIZING AGENT HAVING AN OXIDIZING POWER STRONGER THAN AN OXIDATION POTENTIAL OF ABOUT -1.3 AT SUFFICIENTLY LOW CONCENTRATIONS AND RATE FROM A WATER SOLUBLE OXIDIZED PRODUCT.
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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |