MLchartDataset catalogue

Circulation sub

Term · Oil and gas · MLC-T-OAG-000679

A downhole tool run as part of a tubing string that allows fluid to be diverted from the tubing bore into the annulus, or vice versa, by opening and closing ports. This sub facilitates fluid circulation for wellbore cleaning, spotting treatment fluids, or equalizing pressures. It is typically activated by dropping a ball or applying hydraulic pressure.

Table 1. Record
IdentifierMLC-T-OAG-000679
FieldOil and gas
SubjectWell Workover and Intervention
Record as JSON 
{
  "id": "MLC-T-OAG-000679",
  "term": "Circulation sub",
  "field": "Oil and gas",
  "definition": "A downhole tool run as part of a tubing string that allows fluid to be diverted from the tubing bore into the annulus, or vice versa, by opening and closing ports. This sub facilitates fluid circulation for wellbore cleaning, spotting treatment fluids, or equalizing pressures. It is typically activated by dropping a ball or applying hydraulic pressure.",
  "subject": "Well Workover and Intervention",
  "url": "https://mlchart.com/terminology/oil-and-gas/circulation-sub/"
}

Record 729 of 4,468 in Oil and gas terminology (MLC-0103). Request the full dataset.