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Title: Practical CO2—WAG Field Operational Designs Using Hybrid Numerical-Machine-Learning Approaches

Abstract

Machine-learning technologies have exhibited robust competences in solving many petroleum engineering problems. The accurate predictivity and fast computational speed enable a large volume of time-consuming engineering processes such as history-matching and field development optimization. The Southwest Regional Partnership on Carbon Sequestration (SWP) project desires rigorous history-matching and multi-objective optimization processes, which fits the superiorities of the machine-learning approaches. Although the machine-learning proxy models are trained and validated before imposing to solve practical problems, the error margin would essentially introduce uncertainties to the results. In this paper, a hybrid numerical machine-learning workflow solving various optimization problems is presented. By coupling the expert machine-learning proxies with a global optimizer, the workflow successfully solves the history-matching and CO2 water alternative gas (WAG) design problem with low computational overheads. The history-matching work considers the heterogeneities of multiphase relative characteristics, and the CO2-WAG injection design takes multiple techno-economic objective functions into accounts. This work trained an expert response surface, a support vector machine, and a multi-layer neural network as proxy models to effectively learn the high-dimensional nonlinear data structure. The proposed workflow suggests revisiting the high-fidelity numerical simulator for validation purposes. The experience gained from this work would provide valuable guiding insights to similar CO2more » enhanced oil recovery (EOR) projects.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
New Mexico Institute of Mining and Technology, Socorro, NM (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1766084
Alternate Identifier(s):
OSTI ID: 1849090
Grant/Contract Number:  
FC26-05NT42591
Resource Type:
Published Article
Journal Name:
Energies
Additional Journal Information:
Journal Name: Energies Journal Volume: 14 Journal Issue: 4; Journal ID: ISSN 1996-1073
Publisher:
MDPI AG
Country of Publication:
Switzerland
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING; 29 ENERGY PLANNING, POLICY, AND ECONOMY; Energy & Fuels; multi-objective optimization; CO2-WAG; machine learning; numerical modeling; hybrid workflows

Citation Formats

Sun, Qian, Ampomah, William, You, Junyu, Cather, Martha, and Balch, Robert. Practical CO2—WAG Field Operational Designs Using Hybrid Numerical-Machine-Learning Approaches. Switzerland: N. p., 2021. Web. doi:10.3390/en14041055.
Sun, Qian, Ampomah, William, You, Junyu, Cather, Martha, & Balch, Robert. Practical CO2—WAG Field Operational Designs Using Hybrid Numerical-Machine-Learning Approaches. Switzerland. https://doi.org/10.3390/en14041055
Sun, Qian, Ampomah, William, You, Junyu, Cather, Martha, and Balch, Robert. Wed . "Practical CO2—WAG Field Operational Designs Using Hybrid Numerical-Machine-Learning Approaches". Switzerland. https://doi.org/10.3390/en14041055.
@article{osti_1766084,
title = {Practical CO2—WAG Field Operational Designs Using Hybrid Numerical-Machine-Learning Approaches},
author = {Sun, Qian and Ampomah, William and You, Junyu and Cather, Martha and Balch, Robert},
abstractNote = {Machine-learning technologies have exhibited robust competences in solving many petroleum engineering problems. The accurate predictivity and fast computational speed enable a large volume of time-consuming engineering processes such as history-matching and field development optimization. The Southwest Regional Partnership on Carbon Sequestration (SWP) project desires rigorous history-matching and multi-objective optimization processes, which fits the superiorities of the machine-learning approaches. Although the machine-learning proxy models are trained and validated before imposing to solve practical problems, the error margin would essentially introduce uncertainties to the results. In this paper, a hybrid numerical machine-learning workflow solving various optimization problems is presented. By coupling the expert machine-learning proxies with a global optimizer, the workflow successfully solves the history-matching and CO2 water alternative gas (WAG) design problem with low computational overheads. The history-matching work considers the heterogeneities of multiphase relative characteristics, and the CO2-WAG injection design takes multiple techno-economic objective functions into accounts. This work trained an expert response surface, a support vector machine, and a multi-layer neural network as proxy models to effectively learn the high-dimensional nonlinear data structure. The proposed workflow suggests revisiting the high-fidelity numerical simulator for validation purposes. The experience gained from this work would provide valuable guiding insights to similar CO2 enhanced oil recovery (EOR) projects.},
doi = {10.3390/en14041055},
journal = {Energies},
number = 4,
volume = 14,
place = {Switzerland},
year = {Wed Feb 17 00:00:00 EST 2021},
month = {Wed Feb 17 00:00:00 EST 2021}
}

Journal Article:
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https://doi.org/10.3390/en14041055

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