NDLI: Experimental Study on Shear Wave Transmission in Fractured Media

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Experimental Study on Shear Wave Transmission in Fractured Media

Content Provider	MDPI
Author	Cai, Ming Wu, Hongliang Xin, Yi Liu, Peng Zhang, Chengguang Tang, Jun Lin, Minjie Tan, Lihong
Copyright Year	2022
Description	Unconventional oil and gas reservoirs have broad exploration and development prospects. Fracture parameters and effectiveness evaluation are two of the key tasks for the evaluation of these types of reservoirs. Array acoustic logging can be used for fracture evaluation to compensate for the deficiencies of the image logging fracture evaluation method. Therefore, to develop acoustic logging evaluation methods as well as nondestructive testing methods for fractures, experiments were conducted to study the shear wave transmission in fractured media. Experiment data demonstrate a good correlation between the shear wave attenuation coefficient and fracture width, and the shear wave attenuation coefficients rise logarithmically with the increase in the fracture width for all models with different porosities and distinct dip angles of fractures. The shear wave attenuation coefficient changes relatively faster with the fracture width when the fracture width is within 250 μm. In addition, the shear wave attenuation is affected by the core porosity and fracture dip angle. When the fracture width is constant, the shear wave attenuation caused by the 0° fracture is relatively larger and is obviously greater than that of the fractures at other angles, which is consistent with the existing experimental results. The results of this study can be used to guide further research on amplitude compensation methods for sonic signal transmission in fractured media and fracture evaluation methods.
Starting Page	4047
e-ISSN	14248220
DOI	10.3390/s22114047
Journal	Sensors
Issue Number	11
Volume Number	22
Language	English
Publisher	MDPI
Publisher Date	2022-05-26
Access Restriction	Open
Subject Keyword	Sensors Petroleum Engineering Shear Wave Signal Fracture Extraction of Wave Attenuation Array Acoustic Logging Sonic Experiment Sonic Transducer
Content Type	Text
Resource Type	Article

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