Research Institute of Oil Production Engineering in Daqing Oilfield

Daqing, China

Research Institute of Oil Production Engineering in Daqing Oilfield

Daqing, China
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Wang J.,Northeast Petroleum University | Lu Y.,Northeast Petroleum University | Wang X.,Research Institute of Oil Production Engineering in Daqing Oilfield | Yang Y.,Research Institute of Oil Production Engineering in Daqing Oilfield | And 2 more authors.
Colloids and Surfaces A: Physicochemical and Engineering Aspects | Year: 2017

Calcium carbonate (CaCO3) crystals with various morphologies and polymorphs were synthesized from the aging calcium chloride (CaCl2) and sodium carbonate (Na2CO3) solution using inorganic silica as well as organic partially hydrolyzed polyacrylamide (HPAM) and surfactant heavy alkyl-benzene sulfonate (HABS) as effective crystal growth modifiers by the rapidly mixing method at 45 °C. The effect of different additives on controlling calcium carbonate morphology has been investigated by field emission scanning electron microscopy (FESEM), fourier transform infrared (FT-IR) spectrometer and X-ray diffraction (XRD). Peanut-like CaCO3 particles were successfully obtained after the mixture system being aged for 6 h at pH of 11.3 ± 0.2, and the transition from sphere through peanut-like shape to cubic shape for CaCO3 particles occurred with increasing of aging time. All the CaCO3 particles were pure calcite when pH was unadjusted (pH = 11.2 ± 0.1), however, lower pH favored the formation of vaterite. The research results showed that the adsorption of HPAM and HABS on SiO2-coated CaCO3 surfaces played a crucial role in modifying the crystals morphologies. A hypothetical mechanism for the formation process of the peanut-like CaCO3 was presented. © 2017


Wang J.,Northeast Petroleum University | Wang J.,Research Institute of Oil Production Engineering in Daqing Oilfield | Hu F.-L.,China Institute of Technology | Li C.-Q.,Northeast Petroleum University | And 2 more authors.
Separation and Purification Technology | Year: 2010

Six kinds of dendritic polyether surfactants were synthesized with different proportions of propylene oxide and ethylene oxide using phenol-amine resin as a precursor. The surface tension and demulsification performance of these polyether surfactants were studied. It shows that the six dendritic polyethers behave like typical surfactants. The results reveal that these new types of surfactants show interesting demulsification properties towards the simulated emulsions used in our work. The structure of the polyethers can influence the demulsification performance, of which the main factor is the molecular block. The demulsification mechanism of these dendritic polyethers was studied using single-droplet protocol, and the dynamic data of drainage time, half life time, and rupture rate constant obtained are consistent with the demulsification law of the six dendritic polyethers. © 2010 Elsevier B.V. All rights reserved.


Wang J.,Northeast Petroleum University | Wang J.,Research Institute of Oil Production Engineering in Daqing Oilfield | Li C.-Q.,Northeast Petroleum University | An N.,Northeast Petroleum University | Yang Y.,Research Institute of Oil Production Engineering in Daqing Oilfield
Separation Science and Technology (Philadelphia) | Year: 2012

A lower generation hyperbranched molecular skeleton R 12-1.0G was synthesized with methanol as solvent by means of Michael addition and amidation condensation reaction with C 12 fatty amine, acrylate, and ethylenediamine as raw materials. The structure was characterized by IR and 1H NMR spectrum. Two lower generation hyperbranched polyethers were further synthesized by means of a skeleton as raw materials through addition reaction with epoxyethane and epoxypropare, respectively. The surface tension, cloud point, and HLB value of the hyperbranched polyethers were determined systematically. On this basis, the demulsification of two hyperbranched polyethers for simulated emulsion was studied in this paper. The results showed that two hyperbranched polyethers are typical surfactants, and they show different demulsification for the simulated emulsion. The structure of polyethers can influence the demulsification performance, and the main factor is the molecular block structure. The demulsification mechanism of two hyperbranched polyethers was studied using the single-droplet protocol, and the dynamic data of drainage time, half life time, and rupture rate constant obtained are consistent with the demulsification law of the hyperbranched polyethers. This study may be helpful in accounting for the demulsification mechanism and for developing effective demulsifiers with new structure. © 2012 Copyright Taylor and Francis Group, LLC.


Wang J.,Northeast Petroleum University | Wang J.,Research Institute of Oil Production Engineering in Daqing Oilfield | Li C.Q.,Northeast Petroleum University | Qu H.J.,Northeast Petroleum University | And 2 more authors.
Petroleum Science and Technology | Year: 2010

Dendrimers are proposed and tested as demulsification reagents for recovering raw oil from oil-water emulsion, a common form of today's raw oil directly from mining. This design was based on the nanocontainer feature of dendrimers, which should 'contain' natural surfactants existing in raw oil. The experimental results indicate that the key structural requirement for a dendrimer as a highly efficient demulsification reagent is that the surface free energy of the dendrimers should be similar to that of water, which disables its potential as a surfactant. Copyright © Taylor & Francis Group, LLC.


He J.,Southwest Petroleum University | Li C.,Southwest Petroleum University | Yao M.,Southwest Petroleum University | Sun Y.,Southwest Petroleum University | Sun Y.,Research Institute of Oil Production Engineering in Daqing Oilfield
Jinshu Rechuli/Heat Treatment of Metals | Year: 2015

AT13/MoS2 composite ceramics coatings with four different MoS2 content on 45 steel surface were prepared by atmospheric plasma spraying, and the microstructure and corrosion resistance of AT13/MoS2 composite coatings were investigated. The results show that porosity increases with the increase of MoS2 content. Because of the high porosity of coating, the corrosion resistance of AT13/MoS2 composite coatings is decreasing in the corrosion medium of 10% H2SO4 at 80 ℃. ©, 2015, Chinese Mechanical Engineering Society of Heat Treatment. All right reserved.


He J.,Southwest Petroleum University | Li C.,Southwest Petroleum University | Yao M.,Southwest Petroleum University | Sun Y.,Southwest Petroleum University | And 2 more authors.
Jinshu Rechuli/Heat Treatment of Metals | Year: 2015

AT13/MoS2 composite ceramics coating with four different MoS2 contents (0%, 3%, 6%, 9%) on 45 steel surface were prepared by plasma spraying, and the microstructure structure after wearing and tribological properties of AT13/MoS2 composite coatings were investigated. The results show that the friction coefficient of composite coatings decreases with the increase of MoS2, while the volume loss of composite coating is the lowest when the content of MoS2 is 6%,meanwhile the comprehensive performance of composite coating is optimal. The wear mechanism of AT13 coating is dominantly abrasive wear, but the wear mechanism of composite coating tends to change from fatigue and friction wear to abrasive one. ©, 2015, Chinese Mechanical Engineering Society of Heat Treatment. All right reserved.

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