Characterization and evaluation of synthesized ammonia triethyl amide (ATEA) for removing sodium chloride deposition

Zhou, Ming; Yi, Rongjun; Gu, Yinhua; Zou, Jiaxi; Guo, Xiao

doi:10.1016/j.petrol.2019.04.005

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…Our research group has also made great efforts in polymer flooding, − preparation of temperature-resistant and salt-resistant nanospheres, − conductive nanocomposites, and other aspects. , Zhou et al using a microemulsion polymerization method to synthesize magnetic polymer nanospheres, and the conditions for synthesis were improved by parallel experiments with four components and three different levels. The microscopic particles had good thermal stability and a homogeneous spherical form.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Temperature- and Salt-Resistant CP(AM-AMPS-DMDAAC) Nanospheres for Oil Displacement

Li,

Zhou

et al. 2024

ACS Appl. Polym. Mater.

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Polymer nanospheres are commonly used in scientific and industrial fields including petroleum, electronics, and biomedicine. The precise synthesis of polymer nanospheres with a controllable size and regular shape is important for achieving thermal stability and mechanical properties, which will directly affect the oil displacement effect. In this paper, amphoteric CP(AM-AMPS-DMDAAC) nanospheres with a small particle size and regular shape were prepared by using an acrylamide (AM), 2-acrylamide-2methylpropanesulfonic acid (AMPS), diallyl dimethylammonium chloride (DMDAAC), and methylene-bis-acrylamide mixed solution as the aqueous phase and Span-80 and Tween-80 as the composite emulsifier, followed by reverse-phase microemulsion polymerization. The results showed that nanospheres had temperature and salt resistance and excellent physical and chemical properties. The thermal decomposition temperature was 236.5 °C, the median size of the particles was close to 50 nm, the swelling factor remained at 6.1 nm/nm after water absorption and expansion in the formation water at 120 °C for 7 days, and the swelling factor was 10.4 nm/nm after 14 days. In addition, nanospheres also exhibit good viscoelasticity and pseudoplasticity. The average plugging rate was 79.5% in the low permeability cores, and after the injection of the CP(AM-AMPS-DMDAAC) nanospheres based on water flooding, the average enhanced recovery rate was 13.46%.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Temperature- and Salt-Resistant CP(AM-AMPS-DMDAAC) Nanospheres for Oil Displacement

Li,

Zhou

et al. 2024

ACS Appl. Polym. Mater.

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Effect of interface-active proteins on the salt crystal size in waterborne hybrid materials

et al. 2021

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Aqueous processes yielding hybrid or composite materials are widespread in natural environments and their control is fundamental for a multiplicity of living organisms. Their design and in vitro engineering require knowledge about the spatiotemporal evolution of the interactions between the involved liquid and solid phases and, especially, the interphases governing the development of adhesion during solidification. The present study illustrates the effects of distinct proteins on the precipitation of sodium chloride encompassing the size, shape and distribution of halite crystals formed during the drying of droplets containing equally concentrated saline protein solutions. The precipitates obtained from aqueous sodium chloride formulations buffered with tris(hydroxymethyl)aminomethane (Tris) contained either bovine serum albumin (BSA), fibrinogen or collagen and were characterized with respect to their structure and composition using optical and electron microscopy as well as x-ray analysis. The acquired findings highlight that depending on the protein type present during droplet drying the halite deposits predominantly exhibit cubic or polycrystalline dendritic structures. Based on the phenomenological findings, it is suggested that the formation of the interphase between the growing salt phase and the highly viscous saline aqueous jelly phase containing protein governs not only the material transport in the liquid but also the material exchange between the solid and liquid phases.

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Characterization and evaluation of synthesized ammonia triethyl amide (ATEA) for removing sodium chloride deposition

Cited by 2 publications

References 14 publications

Synthesis and Properties of Temperature- and Salt-Resistant CP(AM-AMPS-DMDAAC) Nanospheres for Oil Displacement

Synthesis and Properties of Temperature- and Salt-Resistant CP(AM-AMPS-DMDAAC) Nanospheres for Oil Displacement

Effect of interface-active proteins on the salt crystal size in waterborne hybrid materials

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