MLchartDataset catalogue

Bypassed mud

Term · Oil and gas · MLC-T-OAG-000508

Drilling mud left in the annulus behind a casing or liner after cementing because the cement slurry flowed past it instead of displacing it. It remains in pockets or channels, most often on the narrow side of an off-center casing, and later dehydrates and turns porous, which lets formation fluids travel along the casing. Centralizers, pipe movement, and spacer fluids are the usual measures against it.

Table 1. Record
IdentifierMLC-T-OAG-000508
FieldOil and gas
SubjectDrilling Fluids
Record as JSON 
{
  "id": "MLC-T-OAG-000508",
  "term": "Bypassed mud",
  "field": "Oil and gas",
  "definition": "Drilling mud left in the annulus behind a casing or liner after cementing because the cement slurry flowed past it instead of displacing it. It remains in pockets or channels, most often on the narrow side of an off-center casing, and later dehydrates and turns porous, which lets formation fluids travel along the casing. Centralizers, pipe movement, and spacer fluids are the usual measures against it.",
  "subject": "Drilling Fluids",
  "url": "https://mlchart.com/terminology/oil-and-gas/bypassed-mud/"
}

Record 547 of 4,468 in Oil and gas terminology (MLC-0103). Request the full dataset.