MLchartDataset catalogue

Bound fluid

Term · Oil and gas · MLC-T-OAG-000430

The portion of the pore fluid that is held in place by capillary forces or adsorbed on mineral surfaces and does not flow under normal reservoir pressure gradients. It includes clay-bound water, which is counted in total porosity but not in effective porosity, and capillary-bound irreducible water, which stays inside effective porosity but cannot be produced. NMR logs estimate the bound volume from the fast-decaying part of the T2 distribution below a cutoff, about 33 ms in sandstones and 92 ms in carbonates.

Table 1. Record
IdentifierMLC-T-OAG-000430
FieldOil and gas
SubjectFormation Evaluation
Record as JSON 
{
  "id": "MLC-T-OAG-000430",
  "term": "Bound fluid",
  "field": "Oil and gas",
  "definition": "The portion of the pore fluid that is held in place by capillary forces or adsorbed on mineral surfaces and does not flow under normal reservoir pressure gradients. It includes clay-bound water, which is counted in total porosity but not in effective porosity, and capillary-bound irreducible water, which stays inside effective porosity but cannot be produced. NMR logs estimate the bound volume from the fast-decaying part of the T2 distribution below a cutoff, about 33 ms in sandstones and 92 ms in carbonates.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/bound-fluid/"
}

Record 463 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.