Numerical Simulation of Acoustic Field Ahead of Drill Bit in Formation Generated by Multipole Source During Logging While Drilling

Hei, Chuang; Hu, Wei; Zou, Xiao; Hu, Kaili; Li, Zhen

doi:10.1109/lgrs.2024.3433456

IEEE Geosci. Remote Sensing Lett.

2024

DOI: 10.1109/lgrs.2024.3433456

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Numerical Simulation of Acoustic Field Ahead of Drill Bit in Formation Generated by Multipole Source During Logging While Drilling

Chuang Hei,

Wei Hu,

Xiao Zou

et al.

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2024

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Cited by 2 publications

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Acoustic Detection Methods for Rock Inhomogeneities and Their Application to Fracture Evaluation

Hei,

Geng,

2024

IEEE Geosci. Remote Sensing Lett.

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Acoustic Detection Methods for Rock Inhomogeneities and Their Application to Fracture Evaluation

Hei,

Geng,

2024

IEEE Geosci. Remote Sensing Lett.

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Factors Influencing Radiation Sound Fields in Logging While Drilling Using an Acoustic Dipole Source

Cao,

Qin,

et al. 2024

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With the increasing number of complex well types in the development stage of oil and gas fields, it is becoming increasingly urgent to use remote detection logging while drilling (LWD) to explore the geological structures in a formation. In this paper, the feasibility and reliability of the dipole remote detection of logging while drilling are demonstrated theoretically. For this purpose, we use an asymptotic solution of elastic wave far-field displacement to derive the calculation formula for the radiation pattern and energy flux of an LWD dipole source. The effects of influencing factors, including the source frequency, formation property, drill collar size, and mud parameter, on the radiation pattern and energy flux are analyzed. The results show that the horizontally polarized shear wave (SH-wave) has a greater advantage in imaging the reflector compared with the cases of the compressive wave (P-wave) and vertically polarized shear wave (SV-wave), which indicates the dominance of the SH-wave in dipole remote detection while drilling. The optimal source excitation frequency of 2.5 kHz and inner and outer radii of the drill collar of 0.02 and 0.1 m, respectively, should be considered in the design of an LWD dipole shear wave reflection tool. However, the heavy drilling mud is not conducive to remote detection during logging while drilling. In addition, the reflection of the SH-wave for the LWD condition is simulated. Under the conditions of optimal source frequency, drill collar size, and mud parameters, the reflection of the SH-wave signal is still detected under the fast formation.

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Numerical Simulation of Acoustic Field Ahead of Drill Bit in Formation Generated by Multipole Source During Logging While Drilling

Cited by 2 publications

References 17 publications

Acoustic Detection Methods for Rock Inhomogeneities and Their Application to Fracture Evaluation

Acoustic Detection Methods for Rock Inhomogeneities and Their Application to Fracture Evaluation

Factors Influencing Radiation Sound Fields in Logging While Drilling Using an Acoustic Dipole Source

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