MLchartDataset catalogue

Critical rate

Term · Oil and gas · MLC-T-OAG-000890

The flow rate at which the flow of a fluid in a pipe or annulus changes from laminar to turbulent. Whether flow is laminar or turbulent follows from the Reynolds number, which depends on fluid density, viscosity, velocity, and the flow geometry. Pumping above this rate gives turbulent flow, which raises frictional pressure loss and erodes the wellbore wall more.

Table 1. Record
IdentifierMLC-T-OAG-000890
FieldOil and gas
SubjectDrilling Fluids
Record as JSON 
{
  "id": "MLC-T-OAG-000890",
  "term": "Critical rate",
  "field": "Oil and gas",
  "definition": "The flow rate at which the flow of a fluid in a pipe or annulus changes from laminar to turbulent. Whether flow is laminar or turbulent follows from the Reynolds number, which depends on fluid density, viscosity, velocity, and the flow geometry. Pumping above this rate gives turbulent flow, which raises frictional pressure loss and erodes the wellbore wall more.",
  "subject": "Drilling Fluids",
  "url": "https://mlchart.com/terminology/oil-and-gas/critical-rate/"
}

Record 957 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.