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对北海十口井的粘土矿物进行研究后,辨认出了几个转化阶段,并在转化阶段与地温变化间建立了相互关系:蒙脱石于65—75℃时消失,而在45℃至大约100℃间可见到混合层伊利石—蒙脱石粘土矿物的转化。在45—65℃温度区间,混合层状粘土矿物中有30％以上的伊利石层;而60—75℃温度区间则表明为向50％以上脱水晶格空胞发展的过渡带。80—100℃温度区间为混合层粘土矿物中伊利石含量超过70％的下限标志。
After studying clay minerals in ten Beihai wells, several stages of transformation were identified and a correlation was established between the transformation stage and changes in ground temperature: montmorillonite disappeared at 65-75 ° C and at 45 ° C to about The conversion of mixed-layer illite-smectite clay minerals can be seen at 100 ℃. In the temperature range of 45-65 ℃, there are more than 30% illite layers in the mixed layered clay minerals; while the temperature range of 60-75 ℃ indicates the transition zone to more than 50% dehydrated lattice cells. 80-100 ℃ temperature range for mixed-layer clay minerals in the illite content of more than 70% of the lower limit mark.