Infinite acting radial flow

{
  "id": "MLC-T-OAG-001975",
  "term": "Infinite acting radial flow",
  "field": "Oil and gas",
  "definition": "A flow regime observed during a well test where the pressure disturbance has not yet reached any reservoir boundaries. In this phase, fluid flows radially towards the wellbore, and the pressure response is solely governed by the reservoir's permeability and porosity. This regime is characterized by a horizontal line on a log-log plot of pressure derivative versus time.",
  "subject": "Well Testing",
  "url": "https://mlchart.com/terminology/oil-and-gas/infinite-acting-radial-flow/"
}