Aluminium Mobility Research of Aluminosilicate Minerals Dissolution
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摘要: 现在愈来愈多的研究表明：硅酸盐、特别是铝硅酸盐矿物在有机质成熟热演化过程中发生溶解形成大量次生孔隙，将是砂岩储集体次生孔隙形成的重要现象之一。有机质成熟热演化发生脱羧作用，进而增强了孔隙水溶液中的有机酸阴离子浓度[1]，有机酸促进铝硅酸盐矿物溶解，溶解的实质是铝活性问题。本文通过实验分析了有机质与无机矿物的相互作用，讨论了有机酸对不同矿物的溶解性，查明了铝活性动力学因素，并对铝硅酸盐矿物次生孔隙形成机理进行了探讨。Abstract: More and more research results indicate that secondary pores of sandstone devclope during dissolution of silicate, especially aluminosilicate minerals, instead of carbonate cements. Decay boxylation of organic matter in the process of maturation increases the anion density of organic acid in pore water solution,and promotes the dissolution of aluminosilicate minerals. The essence of dissolution is mobility of aluminium. Based on experiments,this paper studied the organic-inorganic interaction, solubility of different minerals under the effect of organic acid,and pointed out the dynamics factor which influence the mobility of aluminium. The authors disscused the forming mechanism of secondary pores as well.
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[1] 1.Surdam , R.C，Chganic-inorganic interaction and sandstone diagensis; A. A. P. G. 1989, 73:1一23.
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5.Curtis, c. D.，Link between aluminum mobility and destruction of secondary porosity; .A. A. P. G, 1983，fi7: 380-383. -
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