MLchartDataset catalogue

Calcium contamination

Term · Oil and gas · MLC-T-OAG-000519

The presence of calcium ions in a drilling fluid, which can originate from drilling through calcium-bearing formations like limestone or gypsum, or from cement. This contamination can cause flocculation of bentonite clay, increasing fluid viscosity and gel strength, and reducing filtration control. It is mitigated by adding calcium-precipitating chemicals such as soda ash or bicarbonate.

Table 1. Record
IdentifierMLC-T-OAG-000519
FieldOil and gas
SubjectDrilling Fluids
Record as JSON 
{
  "id": "MLC-T-OAG-000519",
  "term": "Calcium contamination",
  "field": "Oil and gas",
  "definition": "The presence of calcium ions in a drilling fluid, which can originate from drilling through calcium-bearing formations like limestone or gypsum, or from cement. This contamination can cause flocculation of bentonite clay, increasing fluid viscosity and gel strength, and reducing filtration control. It is mitigated by adding calcium-precipitating chemicals such as soda ash or bicarbonate.",
  "subject": "Drilling Fluids",
  "url": "https://mlchart.com/terminology/oil-and-gas/calcium-contamination/"
}

Record 563 of 4,499 in Oil and gas terminology (MLC-0103). Request the full dataset.