Results 11 to 20 of about 144 (128)
Natural Gas Industry B, 2021 Since deep-sea gas hydrate-bearing sediments were drilled for the first time in the Blake Ridge in 1970, gas hydrates have been discovered at 53 drill sites in the continental margins of global oceans with international scientific ocean drilling (DSDP ...
Guangfa Zhong, Di Zhang, Luanxiao Zhao
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Frontiers in Earth Science, 2022 Single-well acoustic imaging in logging-while-drilling (LWD) has important application potential in evaluating cluster-well drilling safety as it can be applied to the real-time detection of an existing cased borehole from a new well during drilling ...
Zhen Li +5 more
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Research on data transmission system of acoustic wave while drilling based on OFDM
IET Communications, 2023 Logging while drilling is to transmit down‐hole measurement data to the surface timely and accurately to ensure the normal production. Drilling data transmission system includes mud pulse and electromagnetic wave.
Zhong Zheng, Yanfeng Geng
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Energies, 2022 Natural gas hydrate is easy to decompose and leak due to the changes in temperature and pressure during drilling, which causes safety accidents. Early monitoring of wellhead overflow is a practical and effective measure to prevent overflow blowouts and ...
Chao Zhong, Jing’an Lu, Dongju Kang
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Coal body structure identification and development effect evaluation based on logging response
Meikuang Anquan, 2021 According to the logging response characteristics of different coal structures, this paper quantitatively identified and described the coal structure in the research area, verified the results by drilling and coring.
LI Quanzhong, ZHAO Lingyun, HU Haiyang
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The research of LWD acoustic isolator based on SAW spatial separation [PDF]
MATEC Web of Conferences, 2019 Acoustic logging while drilling (LWD) can extract P-wave and S-wave information from the formation. However, the transmission of the collar wave propagated directly from the emitter to the receiver may interfere with the P-wave and S-wave and affect the ...
Yang Peinian, Chen Dehua, Xiuming Wang
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Acoustic source characterization for a logging while drilling tool: Theoretical and experimental modeling [PDF]
The Journal of the Acoustical Society of America, 2018 The development of acoustic source technology has been an important task for acoustic logging while drilling (LWD) and various source designs have been implemented. Using a multipole wave expansion theory, this study demonstrates that a LWD acoustic source can be represented as a combination of monopole, dipole, and quadrupole constituents and ...
Song, Xu +6 more
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Multipole Seismoelectric Logging while Drilling (LWD) for Acoustic Velocity Measurements [PDF]
Proceedings, 2012 Massachusetts Institute of Technology. Earth Resources Laboratory (Founding Member Consortium)
Z. Zhu, J. Wang, N. Toksz
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Frontiers in Earth Science, 2022 Based on the comprehensive analysis of wellbore characteristics in a deep shale gas field, the in-situ stress state of the shale reservoir was assessed in this study for the Longmaxi formation in the Dingshan area, Southwestern China.
Qinjie Liu +9 more
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Sensors, 2017 A logging-while-drilling (LWD) caliper is a tool used for the real-time measurement of a borehole diameter in oil drilling engineering. This study introduces the mechanical structure and working principle of a new LWD caliper based on ultrasonic distance
Yongchao Yao +3 more
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