高浓度盐酸(28%HCI)酸化,72年在泸州地区使用以来,防腐剂一直没有得到很好的解决。73年我处经242套次的室内试验,找到了丁炔二醇和碘化钠(或碘化钾)按一定比例(按稀酸总体积的百分比,丁炔二醇0.6～1.5%,碘化钠0.15%)加入30%盐酸中,在90℃、200大气压下,腐蚀速度由不加此防腐剂的1169.71克/平方米·小时,下降到125.23克/平方米·小时,缓蚀效率90%左右。经付20井(井深1477～1588米,井温60℃左右)24.8%盐酸化的井下挂片试验,腐蚀速度只有169.60克/平方米·小时,地面压 High concentrations of hydrochloric acid (28% HCI) acidification, 72 years in Luzhou since the use of preservatives has not been well resolved. 73 years, I conducted 242 sets of laboratory tests to find the acetylene glycol and sodium iodide (or potassium iodide) by a certain percentage (according to the percentage of the total volume of diluted acid, butynediol 0.6 ~ 1.5%, sodium iodide 0.15 %) Was added to 30% hydrochloric acid, and the corrosion rate was reduced to 125.23 g / m 2 · h at a pressure of 200 atm at 90 ° C from 1169.71 g / m 2 · hr without the preservative. The corrosion inhibition efficiency was about 90%. After 20 wells (well depth 1477 ~ 1588 meters and well temperature 60 ℃) were drilled in 24.8% hydrochloric acid downhole coupons, the corrosion rate was only 169.60 g / m 2 · hr. The surface pressure