Successful Development and Field Qualification of a 95/8 in and 7 in Rotary Steerable Drilling Liner System that Enables Simultaneous Directional Drilling and Lining of the Wellbore

Abstract

Many oil and gas operators around the world are faced with drilling operational risks when entering the matured field phase. Narrow drilling margins, hole collapse and lost circulation are among the challenges that must be dealt with safely and economically.This paper describes a successful approach to overcoming these challenges developed through close cooperation between the operator and the oilfield services company. By providing an overview of the concept, technology and operating principles of the 9 ⅝ in and 7 in advanced steerable drilling liner system, the paper highlights the development and the testing process leading to the successful execution of the world's first steerable drilling liner application in the Norwegian sector of the North Sea.The paper also discuss description of the testing and qualification of the two liner drilling sizes (9 ⅝ in and 7 in) at the service company's experimental test rig.

Analysis and optimization of control algorithms for RSSTSP for horizontal well drilling

“…RSS ensure steering the borehole when drill string is rotating, and are usually used together with a logging while drilling (LWD) system. Geological parameters are analyzed in real time, and then precise control of the directional trajectory is achieved based on geological conditions (Haugen 1998;Tribe et al 2001;Torsvoll et al 2010). So far, Schlumberger's PowerDrive, Baker Hughes' AutoTrak, and Halliburton's GeoPilot have been the main representative technologies (Stuart et al 2000;Tribe et al 2001;Bian et al 2011;Wang et al 2014).…”

Development of a Smart Flow Diverter

“…steerable drilling liner (SDL) system; the streaked areas depict the available annulus. Detailed specifications of a SDL system have been described by Torsvoll et al (2009).…”