公开(公告)号：US12102963B2

公开(公告)日：2024-10-01

申请号：US17608081

申请日：2020-04-13

Applicant: BL Technologies, Inc.

Inventor： Nick Antonopoulos ,  Michael Doupe ,  Tamizh Aruvi Kanagasabai ,  Ravi Chandra Reddy Kapa ,  Irving Elyanow

IPC: B01D61/02 ,  B01D61/08 ,  B01D61/12 ,  C02F1/44 ,  C02F103/08

CPC classification number: B01D61/029 ,  B01D61/025 ,  B01D61/027 ,  B01D61/08 ,  B01D61/12 ,  C02F1/441 ,  C02F1/442 ,  B01D2311/06 ,  B01D2311/08 ,  B01D2317/022 ,  B01D2317/08 ,  C02F2103/08 ,  C02F2209/40

Abstract: A high salinity feed water such as seawater is treated to produce a reverse osmosis (RO) concentrate and an RO permeate. Optionally, some or all of the RO concentrate may be filtered to produce a nanofiltration (NF) permeate. Optionally, some feed water can also be filtered to produce NF permeate without first being concentrated by RO treatment. The NF permeate, or a blend of the RO permeate and NF permeate, may be used to produce a product water for injection into an oil-bearing reservoir to enhance oil recovery. Optionally, the product water may have salinity greater than the feedwater, or at least 30 g/L. The product water may have hardness of less than 20 mg/L.