【摘要】 灰岩油藏，尤其是处于风化壳部位的灰岩油藏孔缝洞发育，钻井过程中钻井液漏失现象严重，会导致无法钻进或卡钻恶果。根据任平２井所在的储层特点和钻达３３４７～３３９０ｍ井漏段，采用有机化学堵剂工艺技术较圆满地解决了这个问题。介绍了 ＴＣ—９３８化学剂及凝胶的性能，堵漏原理及在该井的现场应用，通过堵漏工艺技术分析看出应用化学剂堵漏工艺技术在任平２井的水平段堵漏施工十分成功，并取得了理想的效益。认为这是促进整体钻井工艺技术水平的一项新技术，值得推广。更多还原

【Abstract】 This paper introduces a practice that water shutoff agent TC-938, an organic compound, is successfully used as a loss circulation material in Well Ranping 2 for loss circulation control of carbonate reservoir. The characteristics of the chemical agent TC-- 938, plugging mechanism and applied technology are indicated in the paper. It is believed that this practice is a new drilling technology and valuable to develop and apply in loss circulation control.更多还原