Lateral drilling cement plug technology for deep shale gas horizontal Wells
Aiming at the difficulty of cement plug in lateral drilling of Sichuan-Chongqing shale gas horizontal Wells,this paper forms the cement plug cementing technology suitable for lateral drilling of deep shale gas horizontal Wells by developing oil-washing pre-fluid,optimizing the cement slurry formula,controlling the pressure difference inside and outside the pipe,improving displacement efficiency and other supporting measures.14 Wells have been put into practice,and the one-time success rate of cement plug has reached 100%.
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