Hydrogeochemical Simulation of Water-Rock Interaction Under Water Flood Recovery in Renqiu

Hydrogeochemical Simulation of Water-Rock Interaction Under Water Flood Recovery in Renqiu

Oilfield, Hebei Province, China

冯启言;韩宝平

【期刊名称】《中国地球化学学报（英文版）》 【年(卷),期】2002(021)002

【摘要】Hydrogeochemical simulation is an effective method to study water-rock interaction.In this paper, PHREEQM was used for the simulation of water-rock interaction under water flooding in the Renqiu Oilfield. Calculated results revealed that when fresh water was injected into the reservoir, Cl- and Na+ would decrease without involvement in water-rock interaction.Erosion to dolomite will lead to an increase in Ca2 + , Mg2 + and CaHCO3+. Saturation index of calcite and aragonite decreased first and then increased. With fresh water accounting for up to 70 %, mixed water has the strongest erosion ability. Deoiled water has erosion ability under high temperature and high partial pressure of CO2. Pyrite and gypsum were sensitive to deoiled water, which can cause the dissolution of pyrite and the precipitation of gypsum. Micrographs revealed a great deal of information about water-rock interaction.

【总页数】7页(156-162)

【关键词】water flooding;water-rock interaction;hydrogeochemical

simulation;Renqiu Oilfield 【作者】冯启言;韩宝平

【作者单位】China University of Mining and Technology, Xuzhou 221008, China;China University of Mining and Technology, Xuzhou 221008, China

【正文语种】中文 【中图分类】 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_chinese-journal-geochemistry-english_thesis/0201263464272.html 【相关文献】

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