Finite-wellbore solution

{
  "id": "MLC-T-OAG-001424",
  "term": "Finite-wellbore solution",
  "field": "Oil and gas",
  "definition": "A solution of the radial diffusivity equation for a well of finite radius, with the constant production rate applied at the wellbore wall instead of along a mathematical line, so it differs from the line-source solution. The two agree once the pressure disturbance has travelled far beyond the wellbore radius, but the finite-wellbore form is the correct one at early times. Wellbore storage and skin are added to it as further boundary conditions.",
  "subject": "Well Testing",
  "url": "https://mlchart.com/terminology/oil-and-gas/finite-wellbore-solution/"
}