Abstract
Most of the current research and commercial reservoir simulators lack the capability to handle complex completion details like perforation tunnels in a simulation study. In most common applications, the simplified handling of completion complexity in reservoir simulations is not expected to introduce significant error in simulation results. However, it has been found that under certain circumstances, especially in high rate wells that have become more and more common in deepwater oil and profilic gas development, exclusion of the complex completion details in a reservoir simulation model would lead to nontrivial errors. New equations have been proposed to assess the needs to incorporate completion details in a reservoir simulation study based on the understanding of the fluid flow in a formation, the fluid flow along a wellbore and the fluid flow through perforation tunnels if exist. A series of sensitivity studies with different completion options under different flow and reservoir environments has been conducted to provide some guidance to improve well performance prediction through reservoir simulation. Impacts of key parameters like perforation density, perforation diameter, perforation length, wellbore length, borehole diameter, well completion configuration, well placement, reservoir permeability, reservoir heterogeneity, pressure drawdown, etc, have also been investigated.
Highlights
As one of the most critical well components, well completion is expected to have a significant impact on the performance of a well
While the ignorance of completion details in a reservoir simulation model may not lead to much error in production prediction for some wells, it could result in significant overestimate of well production for some other wells
The fluid flow inside a wellbore, the fluid flow in a reservoir, as well as the fluid flow along each perforation tunnel, if existent, will be discussed, which lead to new equations that can be applied to quickly evaluate the needs to consider completion details in a reservoir simulation study
Summary
As one of the most critical well components, well completion is expected to have a significant impact on the performance of a well. A number of new advanced well completion options have been developed and applied in different fields in the world [1]. While the ignorance of completion details in a reservoir simulation model may not lead to much error in production prediction for some wells, it could result in significant overestimate of well production for some other wells. The. 1874-8341/15 question that has been asked over and over again is: when the complex completion details/specifics should be considered in a reservoir simulation study in the first place? The fluid flow inside a wellbore, the fluid flow in a reservoir, as well as the fluid flow along each perforation tunnel, if existent, will be discussed, which lead to new equations that can be applied to quickly evaluate the needs to consider completion details in a reservoir simulation study. Impacts of key parameters like fluid property, wellbore geometry, wellbore length, wellbore diameter, well completion configuration, well placement, reservoir permeability, reservoir heterogeneity, pressure drawdown, etc. will be evaluated
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.