Iron control as part of a well treatment using time-released agents
US11473002B2 · kind B2 · utility
1Cited by
47References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2021 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Feb 8, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/26
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In a well in a subterranean formation, treatment fluids for time-released iron control are utilized. These treatment fluids contain a time-released form of a complexing agent, wherein the complexing agent forms an insoluble complex with iron. The time-released form prevents loss of the agent prior to delivery to the desired site and at the desired time(s). Methods for controlling iron in a well in a subterranean formation utilize these treatment fluids containing a time-released form of a complexing agent and these methods create insoluble complexes of the agent with the iron to control the iron from the formation and/or well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.