发明申请
US20150330180A1 REMOTELY OPERATED STAGE CEMENTING METHODS FOR LINER DRILLING INSTALLATIONS 有权
用于内衬钻孔安装的远程操作阶段建立方法

REMOTELY OPERATED STAGE CEMENTING METHODS FOR LINER DRILLING INSTALLATIONS
摘要:
A method of using a liner assembly comprises inserting the liner assembly into a wellbore, the liner assembly having an annular packer and a port collar. The method further comprises closing fluid flow through a lower end of the liner assembly, actuating the annular packer into engagement with the wellbore, and actuating the port collar into an open position to open fluid communication between an interior of the liner assembly and the wellbore. The method further comprises pumping cement into the wellbore through the port collar at a location above the annular packer and actuating the port collar into a closed position to close fluid communication between the interior of the liner assembly and the wellbore.
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