Towards real-time forecasting of natural gas production by harnessing graph theory for stochastic discrete fracture networks
Abstract
In this work, we compare hydrocarbon production curves obtained from a graph-based reduced-order model with the high-fidelity Discrete Fracture Network (DFN) predictions for a fracture network created using data from a real shale site. We observe that the bounds for the high fidelity DFN model lie within the bounds for the reduced order model, implying that the reduced-order model provides a conservative estimate. Moreover, we found that except for first-passage times and late arriving mass, the production curves from the reduced-order model predict transport accurately. However, it is to be noted that the results are inspite of trading a three-dimensional geometry for a reduced system in the form of a graph, one that is 500–1000 times faster in terms of computational efficiency (for this particular application). In addition, we also compare the production curves for large drawdown and small drawdown using our graph approach. The reduced-order model is successful in showing that the long term productivity is higher in case of small drawdown although the initial productivity is higher for large drawdown. Thus, this reduced-order model offers great potential in uncertainty quantification for production, as well as in providing operators with information to make real-time decisions for optimal production.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1659197
- Alternate Identifier(s):
- OSTI ID: 1809634
- Report Number(s):
- LA-UR-19-28682
Journal ID: ISSN 0920-4105
- Grant/Contract Number:
- 89233218CNA000001; 20170103DR; 20170508DR
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Petroleum Science and Engineering
- Additional Journal Information:
- Journal Volume: 195; Journal ID: ISSN 0920-4105
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 03 NATURAL GAS; Computer Science; Earth Sciences; Mathematics
Citation Formats
Dana, Saumik Prasanta Kumar, Srinivasan, Shriram, Karra, Satish, Makedonska, Nataliia, Hyman, Jeffrey De'Haven, O'Malley, Daniel, Viswanathan, Hari S., and Srinivasan, Gowri. Towards real-time forecasting of natural gas production by harnessing graph theory for stochastic discrete fracture networks. United States: N. p., 2020.
Web. doi:10.1016/j.petrol.2020.107791.
Dana, Saumik Prasanta Kumar, Srinivasan, Shriram, Karra, Satish, Makedonska, Nataliia, Hyman, Jeffrey De'Haven, O'Malley, Daniel, Viswanathan, Hari S., & Srinivasan, Gowri. Towards real-time forecasting of natural gas production by harnessing graph theory for stochastic discrete fracture networks. United States. https://doi.org/10.1016/j.petrol.2020.107791
Dana, Saumik Prasanta Kumar, Srinivasan, Shriram, Karra, Satish, Makedonska, Nataliia, Hyman, Jeffrey De'Haven, O'Malley, Daniel, Viswanathan, Hari S., and Srinivasan, Gowri. Sun .
"Towards real-time forecasting of natural gas production by harnessing graph theory for stochastic discrete fracture networks". United States. https://doi.org/10.1016/j.petrol.2020.107791. https://www.osti.gov/servlets/purl/1659197.
@article{osti_1659197,
title = {Towards real-time forecasting of natural gas production by harnessing graph theory for stochastic discrete fracture networks},
author = {Dana, Saumik Prasanta Kumar and Srinivasan, Shriram and Karra, Satish and Makedonska, Nataliia and Hyman, Jeffrey De'Haven and O'Malley, Daniel and Viswanathan, Hari S. and Srinivasan, Gowri},
abstractNote = {In this work, we compare hydrocarbon production curves obtained from a graph-based reduced-order model with the high-fidelity Discrete Fracture Network (DFN) predictions for a fracture network created using data from a real shale site. We observe that the bounds for the high fidelity DFN model lie within the bounds for the reduced order model, implying that the reduced-order model provides a conservative estimate. Moreover, we found that except for first-passage times and late arriving mass, the production curves from the reduced-order model predict transport accurately. However, it is to be noted that the results are inspite of trading a three-dimensional geometry for a reduced system in the form of a graph, one that is 500–1000 times faster in terms of computational efficiency (for this particular application). In addition, we also compare the production curves for large drawdown and small drawdown using our graph approach. The reduced-order model is successful in showing that the long term productivity is higher in case of small drawdown although the initial productivity is higher for large drawdown. Thus, this reduced-order model offers great potential in uncertainty quantification for production, as well as in providing operators with information to make real-time decisions for optimal production.},
doi = {10.1016/j.petrol.2020.107791},
journal = {Journal of Petroleum Science and Engineering},
number = ,
volume = 195,
place = {United States},
year = {2020},
month = {8}
}
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