Application of GA/PSO Metaheuristic Algorithms Coupled with Deep Neural Networks for Predicting the Fracability Index of Shale Gas Formations

Shale gas reserves represent a significant source of natural gas, but unlocking their full potential depends on effective hydraulic fracturing. This research investigates the application of machine learning (ML) techniques to predict fracability index (FI), offering a faster and more cost-effective...

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Veröffentlicht in:Natural resources research (New York, N.Y.) Jg. 34; H. 4; S. 2117 - 2142
Hauptverfasser: Nadege, Mbula Ngoy, Shu, Biao, Ngungu, Meshac B., Arthur, Mutangala Emmanuel, Dominique, Kouassi Verena
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York Springer Nature B.V 01.08.2025
Schlagworte:
Accuracy
Algorithms
Artificial intelligence
Artificial neural networks
Automation
Back propagation
Back propagation networks
Brittleness
Experimental methods
Fractals
Genetic algorithms
Heuristic methods
Hydraulic fracturing
Hydrocarbons
Machine learning
Minerals
Natural gas
Neural networks
Oil and gas fields
Optimization
Ordovician
Particle swarm optimization
Predictions
Propagation
Reservoirs
Shale
Shale gas
Shales
Silurian
ISSN:1520-7439, 1573-8981
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Zusammenfassung:Shale gas reserves represent a significant source of natural gas, but unlocking their full potential depends on effective hydraulic fracturing. This research investigates the application of machine learning (ML) techniques to predict fracability index (FI), offering a faster and more cost-effective alternative to traditional experimental methods. Focusing on the Upper Ordovician Wufeng to Lower Silurian Longmaxi Formation in the Weiyuan shale gas field, Sichuan Basin, China, this study employed deep neural networks that integrate two metaheuristic algorithms—genetic algorithm (GA) and particle swarm optimization (PSO)—with the back-propagation technique. These combined algorithms—termed GABPNN and PSOBPNN—were utilized to predict the FI. Model performance was assessed using three metrics: R2, RMSE, and MAE. The GABPNN achieved R2, RMSE, and MAE of 0.97531, 0.024754, and 0.0042875, respectively, while the PSOBPNN yielded values of 0.97494, 0.024938, and 0.0048962, respectively. Notably, when predicting FI values for the test well, the PSOBPNN model attained a R2 of 0.99848, and the GABPNN model achieved a R2 of 0.9993, indicating exceptional predictive accuracy. Both models demonstrated nearly perfect prediction accuracy for FI in the testing dataset, underscored by their high R2 values. Importantly, the GABPNN model exhibited superior capability in mitigating overfitting, a common challenge in ML applications. Overall, the GABPNN and PSOBPNN models offer effective alternatives for assessing the fracability of shale gas reservoirs. By facilitating the identification of sweet spots for fracturing, these ML-based approaches have the potential to optimize operations in shale gas reservoirs.
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ISSN:1520-7439
1573-8981
DOI:10.1007/s11053-025-10495-w