Geopressure gradient

{
  "id": "MLC-T-OAG-001688",
  "term": "Geopressure gradient",
  "field": "Oil and gas",
  "definition": "The rate at which formation fluid pressure increases with depth. The normal, or hydrostatic, gradient is about 0.433 psi per foot (9.8 kPa/m) for fresh water and about 0.465 psi per foot (10.5 kPa/m) for typical saline formation water. A gradient above normal marks overpressure and one below it marks underpressure, which set the mud weight and well control needs.",
  "subject": "Geology",
  "url": "https://mlchart.com/terminology/oil-and-gas/geopressure-gradient/"
}