东胜气田连续油管水平井开滑套工艺

Technology of sliding sleeve opening in horizontal well using coiled tubing in Dongsheng gas field

水平井裸眼封隔器分段压裂时,若压差滑套无法打开,整口井的压裂施工都将无法进行。参照第一级压裂球的尺寸设计同等规格的模拟器,利用连续油管携带模拟器下至预定位置,实现第一级投球滑套的打开。在东胜气田某水平井采用改进后的模拟器与投球滑套进行了有效匹配,成功打开第一级投球滑套,顺利完成了后7段压裂施工。该技术为解决类似压裂井施工提供了新的技术思路及手段。

During the staged fracturing with openhole packer in horizontal well,if the differential pressure sliding sleeve cannot be opened,the fracturing operation of the entire well will not perform normally.According to the size of the first-stage fracturing ball,the simulated ball with same specification was designed.Then,the simulated ball was connected with coiled tubing and lowered to the predetermined position.By improving the simulator specifically,the first-stage ball-activated sliding sleeve was opened.The improved simulator for sliding sleeve opening was effectively matched with the sliding sleeve to be opened in a horizontal well in Dongsheng gas field.As a result,the first-stage ball-activated sliding sleeve was successfully opened,and the subsequent 7 stages of fracturing were successfully completed.This technology provides a new idea and approach for fracturing similar wells.