Evolution Toward Simpler, Less Risky Multilateral Wells

Abstract

TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThis paper discusses a paradigm shift in multilateral technology. The new focus is away from increasingly complex completion installations and toward simple yet highly functional multilateral completions.This paper reviews the TAML multilateral classification system, then traces Level 3 multilateral completion technology from original to current configurations. This latest iteration retains simplicity while adding full reentry functionality into both the main bore and lateral completions. The discussion then addresses pre-engineered Level 6 multilateral solutions that, by definition, uniquely embrace simplicity while providing optimal functionality. Following this discussion, case studies from Venezuela , Nigeria, and the United States illustrate installation procedures, operational issues, resulting efficiencies and economies, and opportunities to further improve the technologies.