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- W2393885393 abstract "Alkaline treatments with corrosion and scaling inhibition of highly corrosive recycled produced water (RPW) of Guangli water treating plant, Dongxing, Shengli, for reservoir flooding are conducted in laboratory experimentally. The RPW samples treated by single alkalines (NaOH, Ca(OH)_2, Na_2CO_2, and Na_2SiO_3) and having pH=8.5 show satisfactory corrosion rates but rather high suspended solids (SSs) contents. For RPW samples treated with alkalines and two flocculants in combination, sedimentated in 0.5 hr and taken from the medium layer, the corrosivity, contents of total Fe, SSs, and oily sub stances, and SRB bacterial population are fairly satisfactory but the percent solid residua are very high: 6-9% (v/v) in wet state and 0.09-0.46% (m/m) in dry state. With 3 favorable combinational alkalines (CA) of unknown composition and the above mentioned mixed flocculant additionally, the wet residua creation (WRC) is decreased to 5-8% (v/v) and the dry residua creation (DRC)-to 0.0647-0.0709%. With CA notated as F, the pH of RPW samples is easily adjustible at a medium use level and a DRC of 0.0647% is obtained. The scale formation tendency of the CA treated RPW and its mixture with the reservoir formation water is stronger than that of the formation water. The theoretical predictions of scaling (60℃) show that the CA treatments change CaCO_3 in RPW from critical state to scale forming state and CaSO_4 in RPW from critical state to scale forming and, in one case, critical states. A scale inhibitor is chosen for CA treated RPW. Large amounts of finely filtrated purified RPW of Guangli and CA treated RPW are flown successively after a standard brine through 3 reservoir cores and cause damage in core permeability of 6.2-7.8% and 3.9-4.7%, respectively. It is concluded that the RPW of Guangli can be used for reservoir flooding after such CA treatment with additional purification with flocculant and scale inhibition however the handling with sludge created in large amount is still a serious problem to be solved." @default.
- W2393885393 created "2016-06-24" @default.
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- W2393885393 date "2004-01-01" @default.
- W2393885393 modified "2023-09-25" @default.
- W2393885393 title "Studies on Improving Quality of Recycled Produced Water of Guangli Water Treating Plant for Reservoir Flooding" @default.
- W2393885393 hasPublicationYear "2004" @default.
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