Flexible, Single-Skin Completion Concept Meets Well Integrity, Zonal Isolation Needs

摘要

As deeper and more complex well designs proliferate throughout oil and gas fields, well completion methods are challenged and new technologies are emerging to ensure safe, cost-efficient, and optimized completions. The Welltec Flex-Well completion concept is a flexible, single-skin (mono-bore) system that allows fit-for-purpose completion designs that can be as minimal or intricate as needed for optimal reservoir drainage and do not require the use of cement or swellable packers (Fig.1). Reliable and effective annular barriers continue to be crucial to well management for safety and performance. Cementing has been the industry's conventional means of creating these barriers, having been used for almost 100 years (American Oil & Gas Historical Society 2015). However, the industry is not drilling and completing wells the way that it did a century ago.