A New Approach to Differential Sticking

Abstract

ABSTRACT This paper presents a new theorical and experimental study of the forces involved along the pipe/cake/formation triple bond when differential pressure sticking has been established. This has been done by recording the pressure at differents points of the pipe/cake and cake/formation interfaces in a laboratory device reproducing the drilled hole conditions. Results show that the resistance at any point of the pipe/cake/formation bond is mainly affected by the pore pressure existing at that point.