US3171810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for providing an improved drilling fluid and the product thereof
Assignee: Georgia-Pacific LLC
•
Filing: 1958-10-23
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Granted: 1965-03-02
•
Expires: 1978-10-23
Abstract
No abstract record available.
Inventors
- 👤 King Ellis Gray
- 👤 Adolphson Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:37
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/20; C09K8/203
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
A WELL DRILLING COMPOSITION COMPRISING AN AQUEOUS SUSPENSION OF A CLAYEY MATERIAL CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A SOLUBLE, COMPLEX INORGANIC PHOSPHATE SALT AND A SOLUBLE, OXIDIZED SALT OF A SULFONATED LIGNIN-CONTAINING MATERIAL, SAID SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF, SAID PHOSPHATE SALT BEING PRESENT IN AN AMOUNT SUFFICIENT TO SUBSTANTIALLY REDUCE THE VISCOSITY OF THE DRILLING FLUID, AS MEASURED ON A STORMER VISCOSIMETER AT 600 R.P.M., BELOW THAT OBTAINED WITH THE ADDITION OF EQUAL AMOUNTS OF EITHER THE COMPLEX INORGANIC PHOSPHATE SALT OR THE SULFONATED LIGNIN-CONTAINING MATERIAL ALONE.
Claim 2
Dependent Claim
101 words
A WELL DRILLING COMPOSITION COMPRISING AN AQUEOUS SUSPENSION OF A CLAYEY MATERIAL CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A SOLUBLE, COMPLEX INORGANIC PHOSPHATE SALT AND A SOLUBLE, OXIDIZED SALT OF A SULFONATED LIGNIN-CONTAINING MATERIAL, SAID SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF, SAID PHOSPHATE SALT BEING PRESENT IN AN AMOUNT SUFFICIENT TO SUBSTANTIALLY REDUCE THE VISCOSITY OF THE DRILLING FLUID, AS MEASURED ON A STORMER VISCOSIMETER AT 600 R.P.M., BELOW THAT OBTAINED WITH THE ADDITION OF EQUAL AMOUNTS OF EITHER THE COMPLEX INORGANIC PHOSPHATE SALT OR THE SULFONATED LIGNIN-CONTAINING MATERIAL ALONE.
Claim 3
Dependent Claim
100 words
A WELL DRILLING COMPOSITION COMPRISING AN AQUEOUS SUSPENSION OF A CLAYEY MATERIAL CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A SOLUBLE, COMPLEX INORGANIC PHOSPHATE SALT AND A SOLUBLE SALT OF A SULFONATED LIGNINCONTAINING MATERIAL, SAID SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF, SAID PHOSPHATE SALT BEING PRESENT IN AN AMOUNT SUFFICIENT TO SUBSTANTIALLY REDUCE THE VISCOSITY OF THE DRILLING FLUID, AS MEASURED ON A STORMER VISCOSIMETER AT 600 R.P.M., BELOW THAT OBTAINED WITH THE ADDITION OF EQUAL AMOUNTS OF EITHER THE COMPLEX INORGANIC PHOSPHATE SALT OR THE SULFONATED LIGNIN-CONTAINING MATERIAL ALONE.
Claim 4
Dependent Claim
100 words
A WELL DRILLING COMPOSITION COMPRISING AN AQUEOUS SUSPENSION OF A CLAYEY MATERIAL CONTAINING AN EFFECTIVE DISPERSING AMOUNT OF A SOLUBLE, COMPLEX INORGANIC PHOSPHATE SALT AND A SOLUBLE SALT OF A SULFONATED LIGNINCONTAINING MATERIAL, SAID SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF IRON, ALUMINUM, CHROMIUM, COPPER AND MIXTURES THEREOF, SAID PHOSPHATE SALT BEING PRESENT IN AN AMOUNT SUFFICIENT TO SUBSTANTIALLY REDUCE THE VISCOSITY OF THE DRILLING FLUID, AS MEASURED ON A STORMER VISCOSIMETER AT 600 R.P.M., BELOW THAT OBTAINED WITH THE ADDITION OF EQUAL AMOUNTS OF EITHER THE COMPLEX INORGANIC PHOSPHATE SALT OR THE SULFONATED LIGNIN-CONTAINING MATERIAL ALONE.
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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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |