Enabling High Performance Multi-Lateral Wells: Current Technologies and Gaps

Abstract

This paper presents the current state of the industry in multilateral wells (ML) and presents the key findings from a broad literature review and two knowledge sharing workshops hosted by the University of Calgary and the Clean Resource Innovation Network (CRIN) in late 2021 and early 2022. The technology to deliver ML wells is mature and has been demonstrated across thousands of wellbores around the world. Evaluation, characterization, and control of flows in ML wells is also possible using available technology, however, it is expensive and may be cost prohibitive. Modelling and optimization of flows from lateral legs may be done using existing reservoir simulators. However, some regulatory hurdles may remain, including accounting for production from different zones and licensing of legs. What generally limits the more widespread adoption of ML wells is the perception of elevated risk from decision makers, lack of familiarity with ML technologies, and the perceived costs of ML junctions and associated equipment and operations. By highlighting the technologies and successes, this paper aims to heighten awareness of ML technologies and further widen the adoption and implementation of ML wells.