Viscosifier and fluid loss control system
US4473479A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 1982 |
| Grant date | Sep 25, 1984 |
| Priority date | — |
| Expiry date | Dec 6, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/903
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition capable of imparting a combination of pseudoplasticity and fluid loss control properties to aqueous systems. The composition is an admixture of: PA0 (a) a hydroxy containing aluminum component and PA0 (b) a cross-linked hydroxyalkyl cellulose reaction product; wherein the amount of component (a) to component (b) is in the weight ratio capable of directly forming an aqueous system having from about 0.5 to 10 weight percent of component (a) and from about 0.3 to 5 weight percent of component (b) based on the weight of the water of the system. The invention is further directed to improved drilling fluids containing said composition and to the process of drilling bore holes using said improved fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.