دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a pinned-end pup joint used to provide additional length and inside diameter necessary to accommodate a standard milling tool.

n: the use of a mill or similar downhole tool to cut and remove material from equipment or tools located in the wellbore. Successful milling operations require appropriate nselection of milling tools,fluids and techniques.the mills,or similar cutting tools,m

removing a blockage, fish or casing wall by drilling with a metal-cutting device to gain access to the area beyond.

n: the tool used in the operation of milling. See mill.

n: a tool that mill the debrics, struck pipe, casing, or necking of casing.

n: a special mill that has a heavy tubular extension below it called a pilot or stinger. The pilot, smaller in diameter than the mill, is designed to go inside drill pipe or tubing that is lost in the hole. It guides the mill to the top of the pipe and centres it, thus preventing the mill from by-passing the pipe. Also called a piloted mill.

n: a kinds of special made milling tool.

a step-diameter mill that makes a pilot hole then enlarges it with the upper diameter.

n: a mill used in fishing operations, before running the fishing tool, to reduce the size of the box or collar on the lost tool.

n: a kind of milling tool used to decorate the top of junks before the junks being fished

a wireline-run, round, rough file like device useful for scraping hard deposits on tubing walls.

n: the process by which a portion of pipe, usually casing, is actually removed by cutting with a mill.

n: The process that milling a section of casing in the well by milling tool.

a slot in a mill or other tool to assist with alignment, cleaning or entry.