Methods of separating and isolating water and other desired constituents from oilfield produced brines
US11655173B2 · kind B2 · utility
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38Claims
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Key dates
| Filing date | Dec 8, 2020 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Jun 27, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An integrated, membrane-based process to produce purified water and conversion of salt to high value chemicals from oil and gas well produced water is described. A liquid stream including water and dissolved salt is flowed through pretreatment units and one or more desalination and concentration units which remove at least a portion of the water to form a brine enriched in dissolved salt. The purified high-density brine may be subjected to electrically-enforced salt dissociation techniques to produce chemicals from oil and gas produced water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.