Results 1 to 10 of about 144 (128)
Design of a New Acoustic Logging While Drilling Tool [PDF]
Sensors, 2021 To obtain qualified logging while drilling (LWD) data, a new acoustic LWD tool was designed. Its overall design is introduced here, including the physical construction, electronic structure, and operation flowchart.
Kai Zhang, Baohai Tan, Su Yuanda
exaly +5 more sources
SensorsThe logging-while-drilling (LWD) acoustic logging instrument is pivotal in unconventional oil and gas exploration, and in providing real-time assessments of subsurface formations. The acquisition system, a core component of the LWD acoustic logging suite,
Junqiang Lu, Shijie Wei
exaly +5 more sources
Research on acoustic logging while drilling transmitting technologies
Journal of Geophysics and Engineering, 2022 Abstract Acoustic logging while drilling (LWD) technology plays an important role in oil and gas exploration and development. Compared to traditional wireline logging, LWD must address more additional crucial problems, such as great noise confusions.
Baohai Tan, Su Yuanda, Tan Baohai
exaly +2 more sources
Vibration and horizontal directivity analysis of transmitting transducer for acoustic logging while drilling [PDF]
Journal of Geophysics and Engineering, 2021 Abstract Radially polarized open-cylindrical piezoelectric transducers are widely used in the field of acoustic logging while drilling (LWD). Unlike the wireline logging transducer, the structure of the acoustic LWD transducer is an open structure; in this case, its radial vibration is accompanied by apparent circumferential vibration ...
Yang Gou, Xin Fu
exaly +2 more sources
Reflection signals and wellbore scattering waves in acoustic logging while drilling [PDF]
Journal of Geophysics and Engineering, 2020 Abstract In sonic logging while drilling (LWD), it is difficult to extract reflection signals for the goal of geo-steering as the wave fields are so complicated. It is important to analyse the reflection and scattering effects based on the synthetic acoustic signals of the real LWD models, while considering the medium discontinuity at ...
Xiuming Wang, Xiao He, Wang Xiuming
exaly +2 more sources
A theoretical analysis of the logging-while-drilling dipole acoustic reflection measurement
Frontiers in Earth SciencePost-drilling wireline acoustic single-well imaging technology can now detect geological structures tens of meters away from boreholes. Further development of this single-well imaging technology in the logging-while-drilling (LWD) environment will have ...
Yanghu Li +5 more
doaj +2 more sources
Monopole Acoustic Logging While Drilling Acoustic Insulator Based on Labyrinthine Grooved Structure
Cejing jishuIn acoustic logging while drilling (ALWD), the presence of a thick-walled drill collar inspires significant amplitude drill collar waves, which will interfere with the measurement and acquisition of formation information.
DOU Yifan, ZHANG Chao, GUAN Wei
doaj +2 more sources
SensorsTransducers used in acoustic logging while drilling (ALWD) must be mounted on a drill collar, and their radiation performance is dependent on the employed mounting method.
Xiaohua Che +2 more
exaly +3 more sources
Higher order modes in acoustic logging while drilling [PDF]
SEG Technical Program Expanded Abstracts 2005, 2005 Summary In multipole acoustic logging while drilling (LWD), the fundamental modes dominate recorded waveforms. Higher order modes may also appear and complicate the processing of LWD data. In dipole LWD measurements, the dipole tool mode is often not well separated from the flexural mode. This makes the shear wave measurement more difficult.
Shihong Chi +3 more
openaire +3 more sources
Cejing jishu, 2023 The current acoustic reflection imaging logging while drilling (LWD) technology is affected by the interference of large amplitude borehole mode waves and the oblique incidence of acoustic waves on the borehole wall, resulting in a long propagation path ...
LIU Xien, ZHAO Teng, CHE Xiaohua
doaj +1 more source