A robust inversion of logging-while-drilling responses based on deep neural network

• Autorzy: Zhu Gaoyang , Gao Muzhi , Wang Bin

Identyfikatory

DOI

10.1007/s11600-023-01080-x

• Języki publikacji: EN

Abstrakty

EN

Resistivity inversion plays a significant role in recent geological exploration, which can obtain formation information through logging data. However, resistivity inversion faces various challenges in practice. Conventional inversion approaches are always time-consuming, nonlinear, non-uniqueness, and ill-posed, which can result in an inaccurate and inefficient description of subsurface structure in terms of resistivity estimation and boundary location. In this paper, a robust inversion approach is proposed to improve the efficiency of resistivity inversion. Specifically, inspired by deep neural networks (DNN) remarkable nonlinear mapping ability, the proposed inversion scheme adopts DNN architecture. Besides, the batch normalization algorithm is utilized to solve the problem of gradient disappearing in the training process, as well as the k-fold cross-validation approach is utilized to suppress overfitting. Several groups of experiments are considered to demonstrate the feasibility and efficiency of the proposed inversion scheme. In addition, the robustness of the DNN-based inversion scheme is validated by adding different levels of noise to the synthetic measurements. Experimental results show that the proposed scheme can achieve faster convergence and higher resolution than the conventional inversion approach in the same scenario. It is very significant for geological exploration in layered formations.

Słowa kluczowe

EN

deep neural network; batch normalization; k-fold cross validation; logging while drilling; resistivity inversion; LWD; DNN

PL

głębokie sieci neuronowe; normalizacja wsadowa; k-krotna walidacja krzyżowa; rejestrowanie podczas wiercenia; inwersja rezystancji

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2024
• Tom: Vol. 72, no. 1
• Strony: 129--139
• Opis fizyczny: Bibliogr. 36 poz.

Twórcy

autor

Zhu Gaoyang

• College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China

autor

Gao Muzhi

• College of Control Science Engineering, China University of Petroleum (East China), Qingdao 266590, China

• https://orcid.org/0000-0002-5748-6131

autor

Wang Bin

• College of Control Science Engineering, China University of Petroleum (East China), Qingdao 266590, China

Bibliografia

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