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Song H.,Daqing Oilfield Construction Design and Research Institute
Carbohydrate Polymers | Year: 2010

A graft copolymer was synthesized by graft copolymerization of starch with acrylamide (AM) and acrylacyloxyethyltrimethyl ammonium chloride (AAC). The copolymerization was carried out by using a complex initiation system of urea [CO(NH 2) 2] and ammonium persulfate [(NH 4) 2S 2O 8]. The effect of reaction conditions on graft copolymerization and the application of the polymer as the flocculant were investigated. Experiments showed that a graft copolymer with higher grafting level and higher intrinsic viscosity could be obtained by changing the method of monomer addition and by controlling the ratio of AAC to AM. The application test showed that the results of treatment of two kinds of industrial waste water by the grafted starch [S-g-P(AM-co-AAC)] were better than those treated with cationic polyacrylamide (CPAM). © 2010 Elsevier Ltd. All rights reserved. Source


Yu T.,Daqing Oilfield Construction Design and Research Institute
Advanced Materials Research | Year: 2011

With mixed rare earth (La, Ce, Nd) doping Ti/TiO2 electrode for the anode, degradation situation of oilfield wastewater was studied. The results showed that electrocatalysis technology excels at treating oilfield wastewater. Electrocatalytic oxidation reaction kinetic equation: At=A 0exp(-7.02×10-7D-1.42M -1.66U3.40t). © (2011) Trans Tech Publications, Switzerland. Source


Song H.,Daqing Oilfield Construction Design and Research Institute
Proceedings - SPE International Symposium on Oilfield Chemistry | Year: 2011

An amphoteric starch-graft-polyacrylamide (S-g-PAM) was prepared by inverse emulsion polymerization, subsequent hydrolysis reaction and Mannich reaction. The effects of reaction conditions on copolymerization and the use of the polymer as the water clarifier in oilfield water treatment were investigated. The application test showed that the results of oilfield waste water treatment by amphoteric S-g-PAM were better than those treated with cationic Polyacrylamide (PAM), hydrolytic PAM and amphoteric PAM. Copyright 2011, Society of Petroleum Engineers. Source


Wang H.,China University of Petroleum - East China | Li Y.,China University of Petroleum - East China | Cai X.,Petrochina | Song C.,Daqing Oilfield Construction Design and Research Institute | Meng L.,Daqing Oilfield Construction Design and Research Institute
Huagong Xuebao/CIESC Journal | Year: 2013

In gas-liquid flow, slug flow can be related to other flow patterns, if the hydrodynamic model is developed from slug flow, models of different flow patterns can be unified. Momentum and continuity equations were developed based on slug flow, and simulation of bubble and droplet entrainment was optimized. For the important parameters (wall and interfacial friction factors, slug translational velocity and average slug length), the correlations of these parameters were optimized. Meanwhile, occurrence conditions and correlations of related parameters for liquid droplets and gas bubbles entrainment were given. Finally, a unified model based on slug flow for gas-liquid flow was developed. Experimental data from different sources were used to verify the model. The data with various flow patterns were taken from China University of Petroleum (East China), Daqing Oilfield and foreign researchers. The accuracy of this model was higher than the original model without improvement and optimization of correlations. The relative errors of most pressure drop and holdup data calculated with this model were within ±15%. © All Rights Reserved. Source


Song C.-Y.,Daqing Oilfield Construction Design and Research Institute | Tan Q.-X.,Daqing Oilfield Construction Design and Research Institute
Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics | Year: 2015

Based on experiment and correction research on multiple structure of multiple-pipe type slug catcher visualization prototypes, effect of the downcomer slope, downcomer constrictors, bottle slope, different inlet header and layout of up-level bottle of double-layer structure, height of gas outlet header on slug catcher operating properties was studied in detail, determined the design parameters which different from foreign convention, formed the multiple-pipe type slug catcher design method with independent intellectual property rights and more applicable to engineering. © 2015, Science Press. All right reserved. Source

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