MLchartDataset catalogue

Undertravel

Term · Oil and gas · MLC-T-OAG-003985

A condition in sucker rod pumping where the plunger at the downhole pump travels a shorter stroke than the polished rod does at the surface. It results from stretch of the rods and tubing under the fluid load, and from downhole friction, so it reduces the pump displacement. Its counterpart is overtravel, where dynamic acceleration makes the plunger stroke longer.

Table 1. Record
IdentifierMLC-T-OAG-003985
FieldOil and gas
SubjectProduction Testing
Record as JSON 
{
  "id": "MLC-T-OAG-003985",
  "term": "Undertravel",
  "field": "Oil and gas",
  "definition": "A condition in sucker rod pumping where the plunger at the downhole pump travels a shorter stroke than the polished rod does at the surface. It results from stretch of the rods and tubing under the fluid load, and from downhole friction, so it reduces the pump displacement. Its counterpart is overtravel, where dynamic acceleration makes the plunger stroke longer.",
  "subject": "Production Testing",
  "url": "https://mlchart.com/terminology/oil-and-gas/undertravel/"
}

Record 4,233 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.