Progressive cavity pumping system

{
  "id": "MLC-T-OAG-002971",
  "term": "Progressive cavity pumping system",
  "field": "Oil and gas",
  "definition": "An artificial lift system in which a helical steel rotor turns eccentrically inside a fixed elastomer-lined helical stator, moving fluid in sealed cavities up the tubing. It suits heavy viscous crude and fluids carrying sand or other solids, and it delivers smooth, non-pulsating flow at low rotational speeds. Free gas and high temperature are limits because they overheat and damage the elastomer.",
  "subject": "Production Testing",
  "url": "https://mlchart.com/terminology/oil-and-gas/progressive-cavity-pumping-system/"
}