Treatment of produced water from polymer flooding in oil
In order to treat produced water from polymer flooding (PWPF), a new treatment method of combining hydrolysis acidification-dynamic membrane bioreactor (DMBR)–coagulation process was developed. The experimental results demonstrated that the highest acidification efficiency in hydrolysis acidification reactor (HAR) was 10.98% under hydraulic retention time (HRT) of 12 h.
Treatment of polymer flooding produced water. Treatment of polymer flooding produced water. November 1, 2017 - 24thIPEC – Mehrdad Hesampour, Miguel Pelaez and Iris Porat. 1. Introduction 2. Objectives 3. Materials and Methods 4. Results 5. Take away messages.
Treatment of produced water mixed with polymer
It is added to the flooding water to improve the oil movement. During the process, water is produced as a by-product along with oil and gas production. Moreover, produced water with polymer is more difficult to treat than that from conventional water-flooding process because it is complex and highly contaminated wastewater.
In the petroleum industry, polymer flooding is one of the main methods in enhanced oil recovery (EOR) that applies a water-soluble polymer such as partially hydrolyzed polyacrylamide (HPAM) to increase oil production. It is added to the flooding water to improve the oil movement. During the process, water is produced as a by-product along with oil and gas production.
Reclamation of the Polymer-Flooding Produced Water
In order to resolve the discharge problem of the polymer-flooding produced water (PFPW) in crude oil ex- traction, the PFPW was treated by a four-grade and four-segment (four GS) electrodialysis reversal(EDR)
Produced water from polymer flooding was much more difficult to be treated than that from water flooding in many oilfields. The simulated experimental results showed that the small initial sizes of oil droplets were the main reason that caused the difficulty in treating the produced water from the polymer flooding process.
Treatment of produced water from polymer flooding in oil
Treatment of produced water from polymer flooding in oil production by the combined method of hydrolysis acidification-dynamic membrane bioreactor–coagulation process. Author links open overlay panel. YongqiangZhangab BaoyuGaoab LeiLua QinyanYueab QianWangab YuyanJiaab.
The treatment of produced liquid from polymer flooding is a significant problem in the oil field industry. Produced liquid from polymer flooding studied in this paper was composed of W/O emulsion and wastewater containing the residual polymer.
Treatment Technology on Polymer Flooding Wastewater
Polymer flooding has became one of the most important oil recovery technologies with Chinese oilfields coming into tertiary recovery, which lays a solid foundation for high and stable yields in oilfields. But with it’s large-scale industrial production, polymer flooding technology also brings difficulties for the disposal and treatment of polymer flooding wastewater.
In order to resolve the discharge problem of the polymer-flooding produced water (PFPW) in crude oil ex-traction, the PFPW was treated by a four-grade and four-segment (four GS) electrodialysis reversal(EDR) set-up. The testing results show that the treated PFPW has two kinds, one is the diluted treated PFPW, the total dissolved solids (TDS) of the diluted treated PFPW is less than the
Study on the fouling mechanism and cleaning method
Study on the fouling mechanism and cleaning method in the treatment of polymer flooding produced water with ion exchange membranes† Qing Xia,a Haicheng Guo,b Yubing Ye,a Shuili Yu, *a Lei Li,a Qi Lia and Ruijun Zhangc The complex interactions between organic and inorganic foulants in polymer flooding produced water
While polymer flooding can be financially rewarding, it does present E&P operators with some produced water treatment challenges which can add cost and complexity back into the business case. Some of the polymer comes back with the produced water, making it more viscous than produced water without polymer. The viscosity poses some well-known issues
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