The Traveling-Cylinder Diagram: A Practical Tool for Collision Avoidance

Abstract

Summary The "traveling-cylinder" diagram aids collision risk assessment during planning and collision avoidance during direc tional drilling at multiwell locations. Survey results can be plotted directly on the diagram, enabling an immediate visual risk assess ment. This paper describes the conceptual basis of the diagram, how the diagram is used during planning and drilling, and how the information on the diagram can be interpreted.