Study on the Precipitation Pathway of Nanyishan Oilfield Brine atSubzero Temperatures

ISL OpenIR > 青海盐湖研究所知识仓储

	Study on the Precipitation Pathway of Nanyishan Oilfield Brine atSubzero Temperatures
	Li Qing-Hai; Yu Sheng-Song; Yao Yan; Li Bing; Li Wu
	2011
发表期刊	ACTA PHYSICO-CHIMICA SINICA
卷号	27 期号:8 页码:1803-1808
关键词	Oilfield Brine Freezing Hydrohalite Ice X-ray Diffraction At Subzero
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.
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/1871
专题	青海盐湖研究所知识仓储
推荐引用方式 GB/T 7714	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.
APA	Li Qing-Hai,Yu Sheng-Song,Yao Yan,Li Bing,&Li Wu.(2011).Study on the Precipitation Pathway of Nanyishan Oilfield Brine atSubzero Temperatures.ACTA PHYSICO-CHIMICA SINICA,27(8),1803-1808.
MLA	Li Qing-Hai,et al."Study on the Precipitation Pathway of Nanyishan Oilfield Brine atSubzero Temperatures".ACTA PHYSICO-CHIMICA SINICA 27.8(2011):1803-1808.