US 11,746,280 B2
Production of barium sulfate and fracturing fluid via mixing of produced water and seawater
Fahd Ibrahim AlGhunaimi, Dhahran (SA); Young Chul Choi, Dhahran (SA); Regis Didier Alain Vilagines, Dhahran (SA); Tao Chen, Dhahran (SA); Nahr M. Abulhamayel, Udhailyah (SA); and Sultan S. AlOtaibi, Udhailyah (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Jun. 14, 2021, as Appl. No. 17/347,053.
Prior Publication US 2022/0396727 A1, Dec. 15, 2022
Int. Cl. C09K 8/66 (2006.01); C01F 11/46 (2006.01); C02F 9/00 (2023.01); C09K 8/03 (2006.01); C02F 1/00 (2023.01); C02F 1/24 (2023.01); C02F 1/28 (2023.01); C02F 5/02 (2023.01); C02F 101/10 (2006.01); C02F 1/38 (2023.01); C02F 1/40 (2023.01); C02F 1/42 (2023.01); C02F 1/44 (2023.01); C02F 1/52 (2023.01); C02F 101/32 (2006.01); C02F 103/08 (2006.01); C02F 103/10 (2006.01)
CPC C09K 8/665 (2013.01) [C01F 11/462 (2013.01); C02F 9/00 (2013.01); C09K 8/032 (2013.01); C02F 1/001 (2013.01); C02F 1/24 (2013.01); C02F 1/283 (2013.01); C02F 1/285 (2013.01); C02F 1/385 (2013.01); C02F 1/40 (2013.01); C02F 1/42 (2013.01); C02F 1/44 (2013.01); C02F 1/52 (2013.01); C02F 5/02 (2013.01); C02F 2101/10 (2013.01); C02F 2101/32 (2013.01); C02F 2103/08 (2013.01); C02F 2103/10 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of generating base water for hydraulic fracturing fluid and producing barium sulfate, comprising:
treating produced water to remove oil from the produced water;
treating the produced water to remove calcium and magnesium from the produced water;
combining the produced water with seawater to give a mixture;
precipitating barium sulfate in the mixture from barium in the produced water and from sulfate in the seawater;
separating the barium sulfate as precipitated from the mixture to give base water for a hydraulic fracturing fluid, the base water comprising less than a specified concentration of sulfate; and
collecting the barium sulfate as separated to give the barium sulfate as a weighting agent for drilling fluid.