A Review of Four Prominent Works on Swab and Surge Mathematical Models

Amir Mohammad and Reggie Davidrajuh (University of Stavanger, Norway)

Swab and surge pressure is critical during oil drilling operations. The pipe's axial movements inside the wellbore create pressure changes. The pressure drop becomes positive if the drill is lowered (tripping in) inside the borehole (known as the surge pressure). Also, if the drill moves upwards (tripping out), the pressure difference becomes negative (known as swab pressure). The speed of the movement of the drill determines the magnitude and intensity of pressure differences. If the tripping speed is too high, it causes higher pressure changes and can cause the fracturing well formation. On the other hand, if tripping speed is slow, it leads to slow operations (non-productive time). The scope of this paper is limited to a survey of four scholarly works. These four works present mathematical models on the swab and surge pressure changes.

Journal: International Journal of Simulation- Systems, Science and Technology- IJSSST V23

Published: no date/time given

DOI: 10.5013/IJSSST.a.23.01.08