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Study on the Precipitation Pathway of Nanyishan Oilfield Brine at Subzero Temperatures
Li Qing-Hai1,4; Gu Tong-Xin2,3; Yu Sheng-Song1; Yao Yan1; Li Bing1; Li Wu1
2011-08-01
Source PublicationACTA PHYSICO-CHIMICA SINICA
Volume27Issue:8Pages:1803-1808
SubtypeArticle
AbstractThe 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 (Ca2+, Mg2+, K+, Cl-, B2O3, 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.
KeywordOilfield Brine Freezing Hydrohalite Ice X-ray Diffraction At Subzero temperAture
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000292877400003
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/5969
Collection青海盐湖研究所知识仓储
盐湖资源综合利用工程技术中心
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
2.Chinese Acad Sci, State Key Lab Frozen Soil Engn Cold & Arid Region, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Engn Res Inst, Lanzhou 730000, Peoples R China
4.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li Qing-Hai,Gu Tong-Xin,Yu Sheng-Song,et al. Study on the Precipitation Pathway of Nanyishan Oilfield Brine at Subzero Temperatures[J]. ACTA PHYSICO-CHIMICA SINICA,2011,27(8):1803-1808.
APA Li Qing-Hai,Gu Tong-Xin,Yu Sheng-Song,Yao Yan,Li Bing,&Li Wu.(2011).Study on the Precipitation Pathway of Nanyishan Oilfield Brine at Subzero Temperatures.ACTA PHYSICO-CHIMICA SINICA,27(8),1803-1808.
MLA Li Qing-Hai,et al."Study on the Precipitation Pathway of Nanyishan Oilfield Brine at Subzero Temperatures".ACTA PHYSICO-CHIMICA SINICA 27.8(2011):1803-1808.
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