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US 2024/0132379 A1Published application
Produced water treatment for direct injection using mechanically assisted forward osmosis
AssigneeSaudi Arabian Oil Company
InventorsSeung-Hak Choi, Mohamed Ahmed Soliman, Youngchul Choi, Hasan Al Abdulgader
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Abstract
The disclosure relates to a method including pre-treating a high salinity aqueous liquid to remove solids, oils, and dissolved gases; using the pre-treated aqueous liquid as a draw solution for mechanically assisted forward osmosis to produce an injection water; and injecting the injection water into an underground formation. The high salinity aqueous liquid includes produced water or ground water. The draw solution is diluted with a feed solution wherein the feed solution has a lower osmotic pressure than the high salinity aqueous liquid.
Claims20
A method comprising:
- pre-treating a high salinity aqueous liquid to remove solids, oil, and dissolved gases,
- wherein the high salinity aqueous liquid comprises produced water or ground water;
- using the pre-treated aqueous liquid as a draw solution for mechanically assisted forward osmosis to produce an injection water, wherein the draw solution is diluted with a feed solution, wherein the feed solution has a lower osmotic pressure than the high salinity aqueous liquid;
- and
- injecting the injection water into an underground formation.
2 more elements
Dependencies are inferred from the claim text.