J4 ›› 2011, Vol. 41 ›› Issue (3): 697-706.

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Study on Interaction Between the Feldspar and CO2 Fluid

ZHU Huan-lai1,QU Xi-yu2, LIU Li2,YU Zhi-chao2, ZHANG Li-dong3|TANG Hui3   

  1. 1.College of Earth Sciences, Northeast Petroleum University, Daqing163318, Heilongjiang|China;2.College of Earth Sciences, Jilin University, Changchun130061, China;3.SINOPEC International Petroleum Exploration and Production Corporation, Beijing100083, China
  • Received:2010-07-12 Online:2011-05-26 Published:2011-05-26

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Abstract:

Based on the study of hydrothermal experiment on the interaction between the K-feldspar, plagioclase and CO2 fluids at different temperature (100 ℃, 200 ℃and 300 ℃) ,it is suggested that the corrosion intensity of feldspar should gradually be enhanced as the temperature increases, and albite is stronger than the corrosion degree of K-feldspar. After the reaction between the K-feldspar , plagioclase and CO2 fluids, the spherulitic, rod-like and flower-like gibbsite occurs on the sample surface at 200 ℃and 300 ℃; and siderite forms on the sample surface at 200℃. Spherical ferrous oxide precipitates on the sample surface at 300 ℃ after the reaction between plagioclase and CO2 fluids. The formation of siderite (at 200℃) and the precipitation of FeO(at 300℃) on the sample surface showed that the CO2 can be captured in the mineral as the form of carbonate,  the upper limit temperature that can be captured is around 200℃.

Key words: CO2 fluids, feldspar, hydrothermal experiment, CO2 underground storage, mineralogy

CLC Number: 

  • P618.13
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