Downhole Sand-Ingress Detection With Fiber-Optic Distributed Acoustic Sensors

Topics: Sand management/control
Fig. 1—DAS-system sound field filtered to monitor sand transport.

There is currently no proven technology available in the market that accurately identifies downhole sand-ingress locations in real time. In this paper, the authors present results from use of a new technology that uses in-well-conveyed fiber-optic distributed acoustic sensing (DAS) for the detection of sand-ingress zones across the reservoir section throughout the production period in real time.

Introduction

Mechanical sand-control systems are not always fully effective. The end result may be high sand production, which results in choking back the well and reducing hydrocarbon production significantly. In most cases, the precise sanding interval is unknown, making sand-remediation operations (such as remedial plug placements) often ineffective. A successful remediation requires identification of locations of sand entry to inform targeted sand-shutoff operations. However, no proven technology accurately identifies sand-­ingress locations during well production in real time.

The technology described in this paper has now been used successfully

This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 183329, “Downhole Sand-Ingress Detection With Fiber-Optic Distributed Acoustic Sensors,” by Pradyumna Thiruvenkatanathan, Tommy Langnes, Paul Beaumont, Daniel White, and Michael Webster, BP, prepared for the 2016 Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, 7–10 November. The paper has not been peer reviewed.
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Downhole Sand-Ingress Detection With Fiber-Optic Distributed Acoustic Sensors

01 October 2017

Volume: 69 | Issue: 10