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通过两年来的研究和实验工作,建立了适合于石油地质及储层研究的能谱定量分析方法,编制了硅酸盐等五个矿物标样参考文件。对比分析和重复性实验结果表明:该方法分析误差小、分析速度快。建立了应用能谱测定伊/蒙混层粘土矿物的K_2O含量,确定混层比的计算方法,使粘土矿物的形态特征与成分特征紧密地结合起来。应用该方法于储层的成岩作用研究中,发现并揭示了泌阳凹陷核桃园组储层次生孔隙的形成机理,找出了划分成岩作用阶段的方法、指标,指出了能谱测定蒙皂石(层)中的钠和钙、绿泥石(层)中的铁等对防止油层损害的重要性。
Through two years of research and experimental work, a quantitative spectroscopic method suitable for petroleum geology and reservoir research has been established, and five mineral reference samples for silicate have been prepared. The results of comparative analysis and repetitive experiments show that this method has the advantages of small analysis error and fast analysis speed. The K 2 O content of clay minerals was determined by energy spectrum and the calculation method of mixing ratio was established so that the morphological characteristics and compositional characteristics of clay minerals were closely combined. In this study, the formation mechanism of secondary pores in the Hetaoyuan Formation reservoir in Biyang Depression was discovered and revealed in the study of diagenesis of reservoirs, and the method and index of diagenesis stage were found out. Sodium and calcium in the stone (layer), iron in the chlorite (layer), etc., are of importance to prevent damage to the reservoir.