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Patent Searching and Data


Title:
DAS DATA PROCESSING TO IDENTIFY FLUID INFLOW LOCATIONS AND FLUID TYPE
Document Type and Number:
WIPO Patent Application WO/2020/109426
Kind Code:
A3
Abstract:
A method of identifying inflow locations along a wellbore comprises obtaining an acoustic signal from a sensor within the wellbore, determining a plurality of frequency domain features from the acoustic signal, and identifying, using a plurality of fluid flow models, a presence of at least one of a gas phase inflow, an aqueous phase inflow, or a hydrocarbon liquid phase inflow at one or more fluid flow locations. The acoustic signal comprises acoustic samples across a portion of a depth of the wellbore, and the plurality of frequency domain features are obtained across a plurality of depth intervals within the portion of the depth of the wellbore. Each fluid flow model of the plurality of fluid inflow models uses one or more frequency domain features of the plurality of the frequency domain features, and at least two of the plurality of fluid flow models are different.

Inventors:
THIRUVENKATANATHAN PRADYUMNA (GB)
Application Number:
PCT/EP2019/082808
Publication Date:
July 09, 2020
Filing Date:
November 27, 2019
Export Citation:
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Assignee:
BP EXPLORATION OPERATING CO LTD (GB)
International Classes:
E21B47/107; E21B41/00; E21B47/135
Domestic Patent References:
WO2017174746A12017-10-12
WO2016115030A12016-07-21
Foreign References:
Other References:
TATIANA SILKINA: "Application of Distributed Acoustic Sensing to Flow Regime Classification", 30 June 2014 (2014-06-30), XP055604509, Retrieved from the Internet [retrieved on 20190711]
G. NALDRETT ET AL: "Production Monitoring Using Next-Generation Distributed Sensing Systems", PETROPHYSICS, vol. 59, no. 4, 1 August 2018 (2018-08-01), US, pages 496 - 510, XP055604512, ISSN: 1529-9074, DOI: 10.30632/PJV59V4-2018a5
CHRISTOPHER L STOKELY ET AL: "SPE-179151-MS Acoustics-Based Flow Monitoring During Hydraulic Fracturing", 9 February 2016 (2016-02-09), XP055338190, Retrieved from the Internet [retrieved on 20170124]
Attorney, Agent or Firm:
FORD, Louise Diane et al. (GB)
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