About this document
Surge and Swab Pressures in Drilling by Josue Fish is a document available to read on EtoBox.
The document discusses surge and swab pressures that occur when drilling pipe is moved in and out of a wellbore. It provides equations to calculate surge pressure for both closed and open ended pipe. For a general case with variable geometry, a numerical iterative method is described to calculate the pressure by assuming splits of flow between the annulus and drill pipe until pressures agree. The document also discusses using an effective mean annular velocity that accounts for mud clinging to the pipe wall
- Author
- Josue Fish
- Language
- EN