دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The fishing tool

n: a device placed in the drill or work string that catches debris when a drillable object is being milled or drilled downhole.

n: an expandable, cylindrically shaped gripping mechanism that is fitted into an overshot to retrieve fish from the borehole. See grapple.

a device used to catch debris in the wellbore. Often a part of the string.

n: a fishing accessory run above a bit or a mill to recover small, nondrillable pieces of metal or junk in a well.