小井眼套管侧钻修井技术在文东—文中油田的应用

The Application of Slimhole Casing Sidetracking Technique in Wendong-Wenzhong Oilfield

耿兆华 陈红伟 李　森

中原石油勘探局采油一厂

The No. 1 Oil Production Company ,Zhongyuan Petroleum Exploration Bureau , Henan 457001 , P. R. China

在油田的不断开发中,老井井况问题日益突出,直接影响了油田的持续稳产。部分老井受断层影响,钻遇油层少,或主力油层水淹,严重影响了老井开发效益。为了提高老井的利用率,减少投资,将小井眼开窗侧钻技术应用于—文东文中油田。经送斜、固斜,在Φ139. 7 mm 套管上开窗。采用套管悬挂器,由窗口处下Φ101. 6 mm 套管完成。该项技术应用的成功,不仅解决了无法修复的老井再利用问题,同时也增加了可采储量,成为断块油田开发后期稳产的一种有效手段。

With the development of oilfield ,the hole conditions of old wells are becoming more and more seriously , such as affected by fault ,encounted small oil bearing zones or watered out main productive formations ,which effect the continuously stabilization of oil production. In order to improve the old well’s utilization efficiency and cut down the investment. The 139.7mm casing sidetracking to start windows on casing technique was used in Wendong-Wenzhong Oilfield. The technique not only solve the problem of utilization of the old wells unrepaired, but also increase the recoverable reserves.