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题名: Study on the Precipitation Pathway of Nanyishan Oilfield Brine atSubzero Temperatures
作者: Li Qing-Hai ;  Yu Sheng-Song ;  Yao Yan ;  李冰 ;  李武
刊名: ACTA PHYSICO-CHIMICA SINICA
出版日期: 2011
卷号: 27, 期号:8, 页码:1803-1808
关键词: Oilfield brine ;  Freezing ;  Hydrohalite ;  Ice ;  X-ray diffraction at subzero
英文摘要: The crystallization processes of oilfield brine components from the Nanyishan area at temperature between -18.90 and -30.90 degrees C were studied by a self-designed refrigeration instrument and the precipitation temperatures of the first and second salts were measured accurately. The concentrations of the major ions (Ca(2+), Mg(2+), K(+), Cl(-), B(2)O(3), Na(+)) in the liquid phase of the brine at different temperatures (from -18.90 to -30.90 degrees C) were determined by chemical analyses. The solids obtained at low temperature were identified and the phase changes of the oilfield brine at temperatures between -10.0 and -30.0 degrees C were monitored in situ by subzero temperature X-ray powder diffraction. The results show that the first salt (hydrohalite) precipitates at -19.10 degrees C and the ice and NaCl-2H(2)O co-precipitate at -23.55 degrees C. The crystallization processes of oilfield brine components from the Nanyishan area at temperature between -18.90 and -30.90 degrees C were studied by a self-designed refrigeration instrument and the precipitation temperatures of the first and second salts were measured accurately. The concentrations of the major ions (Ca(2+), Mg(2+), K(+), Cl(-), B(2)O(3), Na(+)) in the liquid phase of the brine at different temperatures (from -18.90 to -30.90 degrees C) were determined by chemical analyses. The solids obtained at low temperature were identified and the phase changes of the oilfield brine at temperatures between -10.0 and -30.0 degrees C were monitored in situ by subzero temperature X-ray powder diffraction. The results show that the first salt (hydrohalite) precipitates at -19.10 degrees C and the ice and NaCl-2H(2)O co-precipitate at -23.55 degrees C.
收录类别: SCI
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/1871
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

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Recommended Citation:
Li Qing-Hai,Yu Sheng-Song,Yao Yan,et al. Study on the Precipitation Pathway of Nanyishan Oilfield Brine atSubzero Temperatures[J]. ACTA PHYSICO-CHIMICA SINICA,2011,27(8):1803-1808.
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