Wellbore cleaning technologies for shale-gas horizontal
2020year4month1day · 1.2. Technologies. In the Sichuan–Chongqing region, with decades of efforts dedicated to wellbore debris treatment, three technologies concerning wellbore plug removal have taken shape, including hydraulic sand washing (killing fluid, clean water, etc.), mechanical sand bailing (wireline type, suction type, rotatable sand bailing tools), and