MLchartDataset catalogue

Sulfonated polystyrene-maleic anhydride copolymer

Term · Oil and gas · MLC-T-OAG-004461

A synthetic polymer additive used in water-based drilling fluids to control fluid loss and improve rheological properties. This copolymer is particularly effective in high-temperature and high-salinity environments, where other fluid loss additives may degrade. It works by forming a thin, low-permeability filter cake on the wellbore, minimizing filtrate invasion into the formation.

Table 1. Record
IdentifierMLC-T-OAG-004461
FieldOil and gas
SubjectDrilling Fluids
Record as JSON 
{
  "id": "MLC-T-OAG-004461",
  "term": "Sulfonated polystyrene-maleic anhydride copolymer",
  "field": "Oil and gas",
  "definition": "A synthetic polymer additive used in water-based drilling fluids to control fluid loss and improve rheological properties. This copolymer is particularly effective in high-temperature and high-salinity environments, where other fluid loss additives may degrade. It works by forming a thin, low-permeability filter cake on the wellbore, minimizing filtrate invasion into the formation.",
  "subject": "Drilling Fluids",
  "url": "https://mlchart.com/terminology/oil-and-gas/sulfonated-polystyrene-maleic-anhydride-copolymer/"
}

Record 3,910 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.