Low molecular weight water soluble organic compounds as crystallization point suppressants in brines
US6635604B1 · kind B1 · utility
31Cited by
42References
81Claims
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Key dates
| Filing date | Sep 20, 2000 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Jun 10, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A brine for use during drilling operations, preferably a completion brine, comprising an amount of a low molecular weight water-soluble organic compound effective to reduce the crystallization point of the brine. The low molecular weight water soluble organic compound can be a variety of compounds, with preferred compounds being ethylene glycol, tripropylene glycol bottoms, and combinations thereof. A method of lowering the crystallization point of the brine using a low molecular weight water soluble organic compound also is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.