A decision support system for horizontal directional drilling

Abstract

Horizontal directional drilling (HDD) was pioneered in the US in the early 1970s. Through the integration of vertical oil well drilling technology with modern survey and steering techniques, horizontal directional drilling methods have the capability of undertaking a wide range of pipe installations, from large-diameter river crossings to small-diameter cable pipes. HDD has gained in popularity, as it is able to install underground pipes with minimum impact on society and the environment. Although HDD has been used for over three decades, it is necessary to evaluate the suitability and appropriateness of HDD methods on a project-to-project basis by considering a large number of factors that influence this decision-making. The lack of a systematic tool contributes to the difficulty of making effective decisions. This paper discusses the development of the framework for a decision support system (DSS) to assist in the selection of appropriate equipment/technique for HDD projects. Decision making criteria and rules are developed through literature review, analysis of field data compiled from the completed HDD projects, and investigations of ongoing projects. This DSS is most appropriate for use by contractors and asset managers at project planning stages.