Methods of forming a chemical casing
US6848519B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2003 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Nov 19, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/903
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods of forming chemical casings include drilling a well bore with a drilling fluid having a pH in the range of from about 6 to 10 and comprising water, a water soluble or water dispersible polymer which is capable of being cross-linked by a thermoset resin and causing the resin to be hard and tough when cured, a particulate curable solid thermoset resin, a water soluble or dispersible thermoset resin, and a delayed dispersible acid-catalyst for curing the solid thermoset resin and the water soluble thermoset resin, whereby the drilling fluid forms a filter cake on the walls of the wellbore that cures into a hard and tough cross-linked chemical casing thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.