An optimized XGBoost method for predicting reservoir porosity using petrophysical logs

S Pan, Z Zheng, Z Guo, H Luo - Journal of Petroleum Science and …, 2022 - Elsevier
To overcome the deficiencies of current porosity prediction methods, the XGBoost algorithm
is introduced to construct a model for porosity prediction, and the obtained model is …

[HTML][HTML] Total organic carbon content logging prediction based on machine learning: A brief review

L Zhu, X Zhou, W Liu, Z Kong - Energy Geoscience, 2023 - Elsevier
The total organic carbon content usually determines the hydrocarbon generation potential of
a formation. A higher total organic carbon content often corresponds to a greater possibility …

Synthetic well logs generation via recurrent neural networks

D Zhang, C Yuntian, M ** - Petroleum Exploration and Development, 2018 - Elsevier
To supplement missing logging information without increasing economic cost, a machine
learning method to generate synthetic well logs from the existing log data was presented …

Imputation of missing well log data by random forest and its uncertainty analysis

R Feng, D Grana, N Balling - Computers & Geosciences, 2021 - Elsevier
Well logs are commonly used by geoscientists to infer and extrapolate physical properties of
subsurface rocks. However, at some depth intervals, well log values might be missing due to …

Physics-constrained deep learning of geomechanical logs

Y Chen, D Zhang - IEEE Transactions on geoscience and …, 2020 - ieeexplore.ieee.org
Geomechanical logs are of ultimate importance for subsurface description and evaluation,
as well as for the exploration of underground resources, such as oil and gas, groundwater …

An improved neural network for TOC, S1 and S2 estimation based on conventional well logs

H Wang, W Wu, T Chen, X Dong, G Wang - Journal of Petroleum Science …, 2019 - Elsevier
Total organic carbon (TOC), volatile hydrocarbon (S 1) and remaining hydrocarbon (S 2) are
significant factors for shale oil and gas exploration and development. However, the TOC, S 1 …

[HTML][HTML] A deep-learning-based prediction method of the estimated ultimate recovery (EUR) of shale gas wells

YY Liu, XH Ma, XW Zhang, W Guo, LX Kang, RZ Yu… - Petroleum Science, 2021 - Elsevier
The estimated ultimate recovery (EUR) of shale gas wells is influenced by many factors, and
the accurate prediction still faces certain challenges. As an artificial intelligence algorithm …

Application of machine learning models for real-time prediction of the formation lithology and tops from the drilling parameters

AA Mahmoud, S Elkatatny, A Al-AbdulJabbar - Journal of Petroleum …, 2021 - Elsevier
Lithology changes significantly affect the drilling program and the total cost of drilling an oil
well, therefore, it is very important to detect the lithology variation and formation tops while …

Lithology identification using an optimized KNN clustering method based on entropy-weighed cosine distance in Mesozoic strata of Gaoqing field, Jiyang depression

X Wang, S Yang, Y Zhao, Y Wang - Journal of Petroleum Science and …, 2018 - Elsevier
Abstract KNN (K-Nearest Neighbors) clustering in machine learning is a very efficient
clustering method applied in lithology identification, reservoir type recognition, flow unit …

A new method for TOC estimation in tight shale gas reservoirs

H Yu, R Rezaee, Z Wang, T Han, Y Zhang, M Arif… - International Journal of …, 2017 - Elsevier
Total organic carbon (TOC) estimation is significantly crucial for shale reservoir
characterization. Traditional TOC estimation methods (such as Passey and Schmoker …