Well treatment fluid
US8985211B2 · kind B2 · utility
1Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2010 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Mar 22, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods of drilling with a wellbore fluid may include pumping the wellbore fluid with an oxidative degradable polymer into a wellbore with and an inactivated oxidant; forming a filtercake in a downhole environment, allowing some of the fluid to filter into a subterranean rock formation to produce a filtercake containing the oxidative degradable polymer and inactivated oxidant; and removing the filtercake formed by the wellbore fluid from the wellbore walls by exposing the filtercake with a breaker fluid comprising an aqueous fluid, and at least one iminodiacetic acid or a salt thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.