Dynamic wellbore and near-wellbore clean-up in wells with a Sandface flow control completion

Ehsan Nikjoo, Rufat Mammadov, Khafiz Muradov, David Davies

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper presents a comprehensive analysis of the well performance during clean-up when the well is equipped with either autonomous, passive, or active sandface flow control completion (sFCC). Numerical modelling is used to study this performance. A few studies have investigated the clean-up performance of sFCCs, especially of the autonomous sFCCs. The sFCC clean-up performance is modelled using an integrated, numerical simulation of dynamic flow processes in a coupled wellbore-reservoir model. The well model is first saturated with the drilling and completion fluids by considering the effect of the mud cake formation and lift-off pressure during well flow back, as well as the relative permeability hysteresis of the invaded zone. The sFCC's performance is modelled and verified using published input data. The simulations reveal how the various sFCC types differ in their clean-up performance, including: 1. The sFCC equipped with Inflow control devices (ICDs) can accelerate the clean-up process compared with conventional (i.e. no sandface flow control) completion. The clean-up efficiency of this sFCC type rests on balancing the positive effect of the more uniform inflow profile along the completion and the negative effect of imposing a higher pressure drop across the completion. 2. The sFCC equipped with Interval control valves (ICVs) allows sequential clean-up of the well zones, where the clean-up of each zone can be optimised separately. 3. Finally, the clean-up performance of the sFCC with autonomous flow control devices (AFCDs) is more complex being highly sensitive to this sFCC's design, the extend of the invaded zone, the wellbore trajectory and etc. Finally, a generic discussion on how to possibly improve the sFCC clean-up is presented. This work improves our understanding of the clean-up performance of wells with sFCCs.

Original languageEnglish
Title of host publicationAbu Dhabi International Petroleum Exhibition & Conference, 13-16 November , Abu Dhabi, UAE
PublisherSociety of Petroleum Engineers
ISBN (Print)9781613995631
Publication statusPublished - 13 Nov 2017
EventSPE Abu Dhabi International Petroleum Exhibition and Conference 2017 - Abu Dhabi, United Arab Emirates
Duration: 13 Nov 201716 Nov 2017


ConferenceSPE Abu Dhabi International Petroleum Exhibition and Conference 2017
Country/TerritoryUnited Arab Emirates
CityAbu Dhabi

ASJC Scopus subject areas

  • Geochemistry and Petrology


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