Focusing on a new way to complete and maintain wells, this paper will explain how a newly developed completion approach enables safer, more sustainable operations with higher production and recovery rates from a simple, durable and cost effective well construction.
The approach, here referred to as the flex-well, concentrates on simplicity while providing all the components an operator requires to design and construct a completion that is fit-for-purpose; it can be as minimalistic or as intricate as the operator requires in order to accomplish maximum reservoir drainage. The flex-well has been engineered to provide a low total-cost-of-ownership solution that meets global operators' current and future drilling, deployment, and production challenges.
The flex-well integrates intervention solutions through a full-bore completion designed for easy access and proactive adjustment. Diagnostic solutions that convey information to surface through wireline data retrieval allow operators to achieve a detailed understanding of well characteristics without permanent cables to surface. This understanding allows for better decision making to optimize and manage the reservoir for maximum recovery throughout the life of the well. Based on the operators data driven decisions production and stimulation valves can be adjusted through wireline interventions, eliminating the need for control lines to surface. With no lines to surface the well design offers complete flexibility for inclusion or addition of multilaterals for infill drilling.
The benefits, simplicity and design flexibility of the concept makes it applicable for operators across all resource plays, conventional and unconventional. However, some factors and conditions do enhance the attractiveness of the solution, such as when traditional cementing is challenged, when high-pressure differentials are present, or when full-bore liner design is desired.
This new way of designing and intervening in oil and gas wells offers the industry a safer approach that results in fewer people required offshore, simpler procedures and operations, and less equipment deployed for shorter time.