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地质与勘探》1979年第1期所载“花香果盐水泥浆在钻进石膏层的应用”一文提出,泥浆加入食盐(NaCl)后,钻进石膏层时,在泥浆中游离的钠离子和氯离子与石膏在泥浆中溶解分离的钙离子和硫酸根离子分别生成化合物2NaCl+CaSO_4?Na_2SO_4+CaCl_2所以就不会有粘土颗粒的钠离子和钙离子发生置换的现象.我认为此说不对,上述化学反应是可逆的离子反应,生成的化合物在泥浆中仍然是以离子的形式存在的,故仍会发生钠离子和钙离子的交换现象.氯化钠之所以能改进
Geology and Exploration, “No. 1, 1979 contained ” application of flower salt brine in the drilling gypsum layer "article suggested that after the slurry into the salt (NaCl), into the gypsum layer, the free sodium in the mud And chloride ions and gypsum in the mud dissolved calcium and sulfate ions were generated compounds 2NaCl + CaSO_4? Na_2SO_4 + CaCl_2 so there will be no clay particles of sodium and calcium ions replaced phenomenon I think that’s right , The chemical reaction is a reversible ion reaction, the resulting compounds in the mud is still in the form of ions, it will still occur sodium ion exchange with calcium ions. The reason why sodium chloride can improve