基于倾角检测仪的水平井定向桥射联作技术

Joint Operation Technology of Directional Bridge Plug and Perforation for Horizontal Wells Based on Inclination Angle Detector

在定向桥射联作施工中,当射孔枪泵送至井下水平段射孔位置后,利用现有技术手段无法检测射孔弹发射口的朝向。通过研制倾角检测仪和全集成定向射孔装置,将选发控制芯片和三轴加速度传感器集成于一体,设计控制电路实现分簇射孔的起爆控制,实时测量射孔弹的方向并上传至地面选发控制系统;当检测到射孔弹方向不正确时,拖动枪串重新泵送使弹架旋转并重新定向,如果射孔弹方向仍不正确,则起出工具串整改后再施工。该技术使得接头与弹架触点连接无需接线,缩短了施工时间,方向测量角度偏差≤2.00°。在F196-XP34井现场应用11段,成功率100%。该技术可应用于所有水平井定向桥射联作,尤其适用于套管外避光纤的射孔工艺,具有较大的推广应用价值。

In the construction of directional bridge plug and perforation joint operation,when the perforating gun is pumped to the horizontal section of the well,the orientation of the perforating bullet’s firing port cannot be detected by the existing technical means.By developing a inclination angle detector and a fully integrated directional perforation device,integrating the selection control chip and three-axis acceleration sensor functions,the control circuit is designed to achieve the initiation control of cluster perforation,measure the direction of perforation projectile in real time and upload it to the ground selection control system.When the direction of the perforation bullet is detected to be incorrect,the gun string is dragged and re-pumped to rotate the charge holder and redirect it.If the direction of the perforation bullet is still incorrect,the tool string should be pull out and rectified before construction.This technology makes the connection between the connector and the contact point of the charge holder without wiring,shortens the construction time.The deviation of direction measurement angle is less than 2.00°.This technology has been applied in 11 sections of the F196-XP34 and the success rate is 100%.This technology can be applied to the joint operation of directional bridge plug and perforation for all horizontal wells,especially suitable for the perforation process of avoiding optical fibers outside the casing.The technology has great promotion and application value.