دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a packer designed for sitting on a pipe that rests on bottom, such as a tail pipe or liner. See packer:

n: a section of pipe with lefthand threads on one end and conventional right-hand threads on the other. In setting a liner, a back-off joint is attached to it so that the drill pipe may be disengaged from the liner by conventional right-hand rotation.

n: The pipe sub whose one respect is left hand thread and the other one is right hand thread.

a perforating charge with the liner shaped to create a large entrance hole but a shallow penetration. See Deep Penetrating Charge.

n: liner with no perforations. blank off v: to close off (as with a blank flange or bull plug).

n: 1. the inside diameter of a pipe or a drilled hole. 2. the diameter of the cylinder of an engine. v: to penetrate or pierce with a rotary tool. Compare tunnel.

n: Refers to the cylinder liner of pipe or internal diameter of wellbore.

the inside diameter of a tool or pipe.

n: (obsolete) a device for sealing the annular space between the top of a liner and the existing casing string.

n: A tool used to pack the annular of the top of liner and upper casing.

a length of casing that runs from a set point to a point part way up in the previously set casing string, but usually not to surface. A liner may be used instead of a full casing string to save money, to maintain a larger ID for well equipment or to preve

n: The hydraulically operated valve which provides a temporary circulating port for cement slurry entering into the annular. Installed in the casing or liner.

n: The cement liner in casing guide shoe or float collar.

n: Used in the condition of non-cementing in liner. Used as the group setting of hanging and packing.