Iron control as part of a well treatment using time-released agents
US11760917B2 · kind B2 · utility
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48References
26Claims
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Key dates
| Filing date | Sep 6, 2022 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Sep 6, 2042 |
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.