Well drilling and production fluids employing parenchymal cell cellulose
US4629575A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1983 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Jul 6, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/933
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Circulating and non-circulating well-drilling fluids are provided comprising parenchymal cell cellulose. In accordance with a preferred embodiment, improved viscosity and fluid loss control in circulating well-drilling fluids are obtained from the inclusion of parenchymal cell cellulose in such fluids. In accordance with another preferred embodiment, certain polymers, especially anionic polymers, and polymers derived from hemicellulosic materials are admixed with parenchymal cell cellulsoe in well fluids to provide synergistic fluid loss control and other beneficial properties. Methods for the employment of circulating and non-circulating well fluids employing parenchymal cell cellulose are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.