:五科一井是集团公司在四川的重点科探井 ,其 12 7尾管下深 6 0 6 2 745m ,是近十年来四川局最深的一口井。由于井下情况复杂 ,环空间隙小 ,温度高 ,给固井施工带来了难度。为了固好该井采取了以下固井技术措施 :应用计算机软件进行固井设计 ,采用塑性水泥浆体系提高水泥石强度 ,用小井眼流变学理论指导施工等。该井的固井成功为今后的深井小井眼固井提供了有益的经验。 : Well Wuyi-Ii is a key exploration well of the group company in Sichuan. Its 127 deep-tail pipe is 6 062 745m deep and is the deepest well in the Sichuan Bureau in the past decade. Due to the complicated underground conditions, small annulus clearance and high temperature, it brings difficulty to cementing construction. In order to secure the well, the following cementing technology and measures have been taken: cementing design by using computer software, cement cement strength by plastic cement slurry system and construction by using slim hole rheology theory. The well cementing success provides a useful experience for future deep well slimhole cementing.