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Waterflooding With Active Injection-Control Devices Improves Oil Recovery

This paper presents the implementation of an approach for improving oil recovery by water-injection optimization using injection-control devices (ICDs) in unconventional reservoirs. In late 2016, a trial campaign began in southeastern Saskatchewan that applied ICDs in relatively low-flow-rate environments to offset production decline and improve recovery. Early-term results show that an improvement in oil recovery greater than 25% over typical waterflood configurations is possible.

Introduction

To offset production decline caused by normal pressure decline and reservoir drainage, secondary recovery using water injection has been administered in three Saskatchewan tight oil plays. This study will be focused on the Bakken formation, the area with the most-complete historical data set available to the authors.

The original completion and well-spacing plan has resulted in occasional direct water channeling from injection to production wells. This is believed to be caused by hydraulic fracturing. In some cases, this communication has limited waterflood sweep efficiency and is referred to as short-circuiting of injection fluid. Chemical and mechanical diversion techniques have been implemented to address short-circuiting with varying degrees of success.

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 189824, “Strategic Waterflood Optimization With Innovative Active Injection-Control Devices in Tight Oil Reservoirs,” by Kyle Barry, SPE, Ryan McDowell, SPE, and Kevin McArthur, Crescent Point Energy, and Anton Kozin, SPE, Trena Marie Stretch, Avo Keshishian, and Jawad Farid, Schlumberger, prepared for the 2018 SPE Canada Unconventional Resources Conference, Calgary, 13–14 March. The paper has not been peer reviewed.
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Waterflooding With Active Injection-Control Devices Improves Oil Recovery

01 December 2018

Volume: 70 | Issue: 12

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