Process to treat subterranean formations using a chelating agent
US9745509B2 · kind B2 · utility
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3References
9Claims
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Assignee
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Key dates
| Filing date | Jun 3, 2014 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Jun 3, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/74
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process to treat a subterranean formation by introducing a composition containing between 1 and 40 wt % on total weight of the composition of a chelating agent selected from the group of glutamic acid N,N-diacetic acid or a salt thereof (GLDA), aspartic acid N,N-diacetic acid or a salt thereof (ASDA), and methylglycine N,N-diacetic acid or a salt thereof (MGDA) into the formation, wherein the process comprises a soaking step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.