ABSTRACT
While traditional definitions classify short-, medium- and long-radius lateral wells by angle build rates, the technology now employed to achieve those build rates suggests an industry definition which characterizes lateral wells not only in terms of wellbore geometry, but in engineering terms as well.
In proposing such a definition, this paper examines new developments in downhole technology, focusing on short- and medium-radius systems to show how choice of drilling hardware can determine the type of curve drilled, as well as how it is planned and completed.
New horizontal well-planning techniques developed in light of recent hardware improvements are also discussed, while technicaf innovations still in development are noted.
Field results of recent lateral wells present examples of problem-solving, since a detailed discussion of lateral applications exceeds the scope of this paper. Concluding remarks suggest areas for further development to improve economics and performance in lateral drilling.
