| Hydrogeochemical Simulation of Water—Rock Interaction Under Water Flood Recovery in Renqiu Oilfield,Hebei Province,China |
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| 引用本文： | 冯启言,韩宝平.Hydrogeochemical Simulation of Water—Rock Interaction Under Water Flood Recovery in Renqiu Oilfield,Hebei Province,China[J].中国地球化学学报,2002,21(2):156-162. |
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| 作者姓名： | 冯启言 韩宝平 |
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| 作者单位： | ChinaUniversityofMiningandTechnology,Xuzhou221008,China |
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| 摘 要： |
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| 关 键 词： | 水岩反应 河北 热化学模拟 油田 钙 镁 |
| 收稿时间： | 16 September 2005 |
Hydrogeochemical simulation of water-rock interaction under water flood recovery in Renqiu Oilfield, Hebei Province, China |
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| Feng Qiyan,Han Baoping.Hydrogeochemical simulation of water-rock interaction under water flood recovery in Renqiu Oilfield, Hebei Province, China[J].Chinese Journal of Geochemistry,2002,21(2):156-162. |
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| Authors: | Feng Qiyan Han Baoping |
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| Institution: | (1) China University of Mining and Technology, 221008 Xuzhou, China |
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| Abstract: | 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 CaHCO
3
+
. 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.
The project was granted by the National Natural Science Foundation of China (No. 49672159). |
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| Keywords: | water flooding water-rock interaction hydrogeochemical simulation Renqiu Oilfield |
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