Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4980761 | Process Safety and Environmental Protection | 2016 | 7 Pages |
Abstract
To meet the oilfield reinjection water quality for low and ultra-low permeability reservoirs in China, a hydrophilized polyvinylidene fluoride (PVDF) membrane (approximate 110 m2) manufactured by our laboratory was used for treating produced water from polymer flooding for reuse in Daqing Oilfield. The results showed that a temperature of 37 °C, volume reduction factor (VRF) of 4, transmembrane pressure (TMP) of 0.20 MPa and crossflow velocity of 4.5 m/s were the feasible operation conditions for the membrane, and the average flux could reach 75 L/(m2 h) (LMH). In the permeate, the total suspended solids (TSS) was consistently below detection limits (2.5 mg/L) and the medium grain size was undetectable. The content of hydrolyzed polyacrylamide (HPAM), crude oil and turbidity were respectively lower than 50 mg/L, 1 mg/L and 1 NTU, respectively. The parameters of treated water all met the highest oilfield reinjection water quality in China and the results demonstrated the hydrophilized PVDF membrane had good anti-fouling characteristics in treating produced water from polymer flooding for reuse.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Health and Safety
Authors
Jun Xu, Cong Ma, Bangqing Cao, Jing Bao, Yong Sun, Wenxin Shi, Shuili Yu,