单通道井钻完井技术对边际油气田和海上中小型油气田有重要的意义,固井是是其中一项关键环节，针对单通道井固井和传统井固井的差异，本文通过对小尺寸油管（尾管）固井技术展开研究，解决了88.9mm油管居中难、顶替效率差、小尺寸管柱难以刮管、射孔作业对生产管柱内壁清洁要求高等难题。在东海某油气田得到成功应用，取得了良好的效果。

 Monobore well drilling and completion technology is important for both marginal oil and gas fields and small offshore oil and gas fields. Cementing is one of the key procedures. For the difference between Monobore well cementing and traditional well cementing, this paper focus on small-size tubing. (liner) cementing technology ，to solve the problem that the 88.9mm oil tube centering problem，poor replacement efficiency, the difficulty of scraping for small-sized tube, and tube cleaning problem. The technology has been successfully applied on an oil and gas field in the East China Sea and achieved good results.