基于煤中不同矿物含量的增透多组分酸配方实验优选

Optimization of Multi-component Acid Composition for Permeability Improvement Based on Different Mineral Contents in Coal

查明对不同煤阶煤增透效果最好的多组分酸配方,能够为多组分酸在煤储层酸化中的应用提供一定的理论依据。采集了不同煤阶煤样(河南义马千秋矿、山西长平矿和山西屯兰矿),进行了多组分酸液对不同煤阶煤溶蚀实验,根据不同多组分酸对不同煤阶煤的溶蚀特征,优选出了不同煤阶煤酸液最优配方。通过酸化前后煤样渗透率测试实验,得出酸化后千秋矿、屯兰矿和长平矿煤样的渗透率分别增加25.76~128.08倍、0.32~1.20倍和0.73~17.22倍,具有良好的酸化增透效果。

Find out the best multi-component acid formula for enhancing the permeability of different coal rank can provide a certain theoretical basis for the application of multi-component acid in coal reservoir acidizing.In this paper,collect different rank samples（Henan Yima Qianqiu Coal Mine,Shanxi Changping Coal Mine and Shanxi Tunlan Coal Mine）,we carry out the dissolution experiments of multi-component acid on different coal rank,according to dissolution characteristics of different multi-component acid on different coal samples,we selected the optimal formula of different coal rank acid.By coal permeability experiment before and after the acidification test,we obtained that the coal permeability of coal samples in Qianqiu Coal Mine,Tunlan Coal Mine,Changping Coal Mine increased by 25.76 to 128.08 times,0.32 to 1.20 times and 0.73 to 17.22 times after acidification,which has good acid antireflective effect.