Invention Grant
US09022117B2 Section mill and method for abandoning a wellbore 有权
用于抛弃井眼的分段磨机和方法

Section mill and method for abandoning a wellbore
Abstract:
A method for milling a tubular cemented in a wellbore includes deploying a bottomhole assembly (BHA) into the wellbore through the tubular, the BHA comprising a window mill; and extending arms of the window mill and radially cutting through the tubular, thereby forming a window through the tubular, wherein a body portion of each window mill arm engages and stabilizes from an inner surface of the tubular after a blade portion of each window mill arm cuts through the tubular.
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