Results 21 to 30 of about 144 (128)

Design of Excitation Circuit for Logging While Drilling Ultrasonic Array Logging Tool

Cejing jishu
Through the wellbore reflection characteristics obtained by ultrasonic array logging tool while drilling, the wellbore profile is studied in real time, and the fractured formation information is obtained.
WANG Yining, TAN Baohai, SU Yuanda, ZHANG Kai, WANG Zhichen, LING Zichen   +5 more
doaj   +1 more source

Drilling Cores and Geophysical Characteristics of Gas Hydrate-Bearing Sediments in the Production Test Region in the Shenhu sea, South China sea

Frontiers in Earth Science, 2022
Gas hydrate production testing was conducted in 2017 in the Shenhu Area in the northern part of the South China Sea, and unprecedented success was achieved.
Jin Liang, Jin Liang, Jin Liang, Miaomiao Meng, Miaomiao Meng, Miaomiao Meng, Jinqiang Liang, Jinqiang Liang, Jinqiang Liang, Jinfeng Ren, Jinfeng Ren, Jinfeng Ren, Yulin He, Yulin He, Yulin He, Tingwei Li, Tingwei Li, Tingwei Li, Mengjie Xu, Mengjie Xu, Mengjie Xu, Xiaoxue Wang, Xiaoxue Wang, Xiaoxue Wang   +23 more
doaj   +1 more source

The optimal design of receiving circuit in acoustic logging while drilling tool [PDF]

Advances in Computer Science Research, 2015
This paper begins with the problems encountered in logging while drilling practice, proposing the necessity and requirement of receiving circuit with rigorous design. Considering the fact that the amplitude of noise signal with low frequency is far greater than that of formation wave, this paper provides a design of 11-order high pass analog active ...
Hongbin He, Penglai Xin, Zheng Zhang
openaire   +1 more source

Design of Multimode Phased-Array Transmitter System for Azimuthal Far-Detection Acoustic Logging Tool While Drilling

Cejing jishu
Acoustic logging-while-drilling technology is the core means to obtain formation parameters in real time in oil and gas exploration. Due to the solidification of hardware architecture, it is difficult to achieve efficient switching of multi-mode ...
QIN Zhenyu, LU Junqiang, LUO Bo, MEN Baiyong, PAN Jiakang, WEI Shijie, LIU Chaodeng, YU Haiyang   +7 more
doaj   +1 more source

LLM‐Integrated Human–Robot Interaction System for Microrobots

Advanced Robotics Research, EarlyView.
This paper proposes an LLM‐based control framework for guiding microrobots using human natural language. This framework can convert the natural human speech into safe and executable command sets for reliable navigation in complex environments. The experimental results show high accuracy and robustness in task performance, demonstrating the potential of
Bairong Zhu, Amar Salehi, Tingting Yu
wiley   +1 more source

Development and prospect of acoustic reflection imaging logging processing and interpretation method

Petroleum Exploration and Development
Acoustic reflection imaging logging technology can detect and evaluate the development of reflection anomalies, such as fractures, caves and faults, within a range of tens of meters from the wellbore, greatly expanding the application scope of well ...
Ning LI, Peng LIU, Hongliang WU, Yusheng LI, Wenhao ZHANG, Kewen WANG, Zhou FENG, Hao WANG   +7 more
doaj   +1 more source

Molecular and Cellular Hallmarks of Age‐Related Vestibular Hair Cell Degeneration

Advanced Science, EarlyView.
This study utilizes single‐cell RNA‐seq transcriptomes, advanced imaging, and electrophysiology to examine universal and cell‐type‐specific aging signatures of vestibular hair cells. The study shows that impaired hair bundle function is a key driver of age‐related vestibular dysfunction.
Samadhi Kulasooriya, Huizhan Liu, Sarath Vijayakumar, Celia Bloom, Zhenhang Xu, Shu Tu, Benjamin J. Borgmeier, Mi Zhou, Litao Tao, Bechara Kachar, David Z. He   +10 more
wiley   +1 more source

Current Status and Development Trend of Look-Ahead While Drilling Technology

Shiyou jixie
As one of the key emerging technologies in the field of logging while drilling （LWD）， the look-ahead wile drilling （LAWD） technology can perform real-time detection on undrilled formation in front of the bit， effectively reducing the risk of drilling ...
Yan Sen, Gao Wenkai, Zhang Xiaohui, Wang Jiajin, Zhang Chunhua, Jia Hengtian   +5 more
doaj   +3 more sources

Research on Engineering Application of Directional Acoustic Remote Detection Technology in Adjacent Well Positioning

Cejing jishu
Whether it is for anti-collision in offshore cluster wells or the rescue of drilling accident wells, the adjacent well positioning technology used is increasingly valued by major oil companies.
ZHAO Long, CHE Xiaohua, ZHAO Teng, ZHANG Liwei, MEN Baiyong   +4 more
doaj   +1 more source

Real‐time lithology identification while drilling based on drill cuttings image analysis with ensemble learning

Deep Underground Science and Engineering, EarlyView.
A lithology identification while drilling method was developed, integrating an automated cuttings sampling system, a smart drilling rig, and an ensemble learning model. Underground trials achieved 97.42% accuracy in real‐time identification of cuttings lithology and composition, enhancing hazard management and supporting unmanned drilling technology in
Kun Li, Ting Ren, Ningping Yao, Jon Roberts, Haitao Song, Zhongbei Li, Xueqiu He, Liang Zhao   +7 more
wiley   +1 more source