Pigging:

Terms Related to Pigging

• Pig

  1. A flow line clearing device, pumped through the line with normal flow. 2. A scraping tool that is forced through a pipeline or flow ...

• Go-devil

  1. A device that is inserted into a pipeline for the purpose of cleaning; a line scraper. Also called a pig. 2. A device that ...

• Master choke line valve

  The valve on the choke and flow line that is nearest to the preventer assembly. Its purpose is to stop the flow through the choke ...

• Ball-and-seat valve

  A device used to restrict fluid flow to one direction. It consists of a polished sphere, or ball, usually or metal, and an annular piece, ...

• Snub

  1. To force pipe or tools into a high-pressure well that has not been killed (i.e., to run pipe or tools into the well against ...

• Production

  The yield of an oil or gas well; the branch of the industry that brings the oil and gas to the surface for sale. The ...

• Mud return line

  A trough or pipe that is placed between the surface connections at the wellbore and the shale shaker and through which drilling mud flows upon ...