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郝科1井是胜利油田为在东营凹陷盐岩层下深层寻找大气田的科学探索井，设计井深5500m，目的层孔二段。244．5mm技术套管为高强度SM—110T套管，下深4324．80m，封住了3395．50～4250m厚854．50m的盐岩、青盐和紫红色软泥岩，并于1996年5月12日固井。1997年2月20日用215．gmm钻头取心钻进至5476．33m，起钻至3945．90m突然于钻，套管变形量6．48mm，变化率0．72mm／月。由于未钻到目的层，也未见油气显示，决定用200mm钻头加深。同年5月30日钻至5807．81m，起钻到3759．33m卡钻，经强力震击和上提2090kNK卡。推算52d套管变形量159mm，变化率为9．17mm／月。后下89mm测井仪检查套管，上起时在3850m卡死．解除后用152mm钻头通并，结果下到3594．42m就下不去了，只得结束施工。文中介绍了套管变形情况和得到的几点启示。
Hao Ke 1 well is a scientific exploration well in Shengli Oilfield, which is a scientific exploration well looking for a deep gas field beneath the salt rock in Dongying depression. 244.5mm technical casing is a high-strength SM-110T casing with a depth of 4324.80m and sealed salt rock, green salt and purplish red muddy mud of 3395.50-4250m thick, Cementing on the 12th. February 20, 1997 with 215. gmm drill bit coring drilling to 5476.33m, from the drill to 3945.90m suddenly drilled, casing deformation 6.48mm, the rate of change 0.72mm / month. As no drilling target layer, no oil and gas show, decided to deepen with 200mm drill. May 30 the same year drilled to 5807.81m, 3759.33m from the drill to get stuck, after a strong shock and lift 2090kNK card. 52d casing deformation 159mm, the rate of change 9.17mm / month. After the next 89mm logging tool to check the casing, starting at 3850m stuck. With 152mm after lifting the drill and the results down to 3594.42m on the go, had to end the construction. The paper introduces the casing deformation and obtained some enlightenment.