国外分枝井钻井技术综述

分枝井钻井技术在国外石油公司引起重视，且工艺日趋成熟。文中在介绍分枝井基本概况的基础上，具体叙述分枝井钻井与完井的方法、设计、打开油层钻井液，固井用水泥和分枝井钻井中几种常用的钻井与完进系统，建议我国在已经掌握老井套管开窗侧钻技术的基础上，尽快开展此项的研究及试验工作，缩短与外国的技术差距，创造更大的经济效益。

Review of Foreign Multilateral Drilling Techniques

Multilateral drilling technique has abstracted attention from foreign oil companies, and it is becoming mature. On the basis of general introduction of the multilateral drilling technology, this paper describesspecifically the methods, design, drill-in fluid, bond cement and several commonly used drilling and well completion syStem for multilateral drilling and completion. And since old-well casing sidetracking technologies havebeen used in China, recommending study and test on this multilateral drilling technology to make up the technicalgap between foreign countries and China, and create greater economic effects.