An autonomous borehole-drilling methodology is proposed using a rotary steerable system
(RSS) as the drilling tool. Directional drilling for hydrocarbon exploration is commonly …

This paper is concerned with autonomous drilling using a mud motor to follow a predefined
well plan for hydrocarbon exploration. The well plan contains curve & straight sections …

Directional drilling for hydrocarbon exploration has been challenged to become more cost-
effective and consistent with fast-growing drilling operations for both offshore and onshore …

This paper illustrates the performance of a precise attitude-hold control feature enabled for a
new-generation rotary steerable system (RSS) via an intelligent downhole navigation and …

Automation of directional drilling processes has gained interest as drilling operators seek
more cost-effective solutions and consistent performance. Automation and control–although …

Drilling boreholes that weave a complex three-dimensional (3D) geometry has been made
possible over the last decades by the emergence of a new generation of steering tools that …

Static analysis of the lateral deformation of a bottom-hole assembly (BHA) has been crucial
in controlling the deviation of the borehole trajectory in the directional drilling process …

This paper discusses the design of an attitude controller embedded in a high dogleg, fully-
rotating rotary steerable system (RSS). While drilling with a high dogleg capable RSS at …

Reliable toolface calculation is essential for achieving robust automatic steering control with
rotary steerable systems (RSS). For RSS with fully rotating sensor packages, this task …

This paper concerns with trajectory azimuth control in directional drilling. The motion
process of the drill bit and a series of stabilizers are described, and a statespace model of …