Results 131 to 140 of about 3,718 (163)

Newtonized sparse channel estimation for mud pulse telemetry

Geoenergy Science and Engineering
Jiaxun Lu, Xingbin Tu, Zitong Sha
exaly   +4 more sources

Study on signal decomposition-based pump noise cancellation method for continuous-wave mud pulse telemetry

Geoenergy Science and Engineering, 2023
Simin Jiang, Zuodan Wang, Hehui Sun
exaly   +4 more sources

Research on the transmission characteristics of mud pulse telemetry with BPSK/QPSK modulation for downhole communication

Geoenergy Science and Engineering
Wenbo Cai, Haofeng Chen, Xiong Han
exaly   +4 more sources

Memoryless Continuous-Phase Chirp Spread Spectrum for Mud Pulse Telemetry

2024 7th International Conference on Information Communication and Signal Processing (ICICSP)
Measurement while drilling (MWD) is essential for advancing deepwater oil and gas exploration, with mud pulse telemetry (MPT) standing out for its broad applicability and reliability.
Jiaxun Lu, Zitong Sha, Yulin Jiang, Yan Wei, Fengzhong Qu, Xingbin Tu   +5 more
semanticscholar   +3 more sources

Laboratory investigations of a hybrid mud pulse telemetry (HMPT) – A new approach for speeding up the transmitting of MWD/LWD data in deep boreholes

Journal of Petroleum Science and Engineering, 2019
For continuous monitoring and controlling of the well path during the drilling process, the bottom hole assembly is equipped with sophisticated sensors, which collect geological and directional data.
Matthias Reich
exaly   +3 more sources

Strategies in High-Data-Rate MWD Mud Pulse Telemetry

Journal of Sustainable Energy Engineering, 2014
Low data rates, typically 1-3 bits/sec or less, are the norm in “mud pulse” Measurement-While-Drilling (MWD) systems. For example, “sirens” offering high carrier frequencies produce low-amplitude signals subject to severe attenuation; and strong signals ...
Yinao Su, Limin Sheng, Lin Li, Hailong Bian, Rongpei Shi, Xiaoying Zhuang, Wilson C. Chin   +6 more
semanticscholar   +3 more sources

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Adaptive dual-sensor noise cancellation method for continuous wave mud pulse telemetry

Journal of Petroleum Science and Engineering, 2018
Abstract Mud pulse telemetry is the most commonly used method for transmitting data from downhole to the surface in measurement while drilling (MWD) systems. During the drilling process, the signal received on surface is seriously disturbed by various noise sources, among which the pump noise is the most damaging.
Fengzhong Qu, Shiyuan Wang, Yezhou Wu
exaly   +3 more sources

An Effective Approach for the Noise Removal of Mud Pulse Telemetry System

2007 8th International Conference on Electronic Measurement and Instruments, 2007
Mud pulse telemetry is a method used for measurement-while-drilling (MWD) in the oil industry. Information (tool-face orientation, temperature, pressure etc.) which is modulated by means of pulse positioning modulation (PPM) is sent from the bottom of the well to the surface by means of pressure waves in the drilling fluid (the drilling mud).
Zhao Jianhui, Liu Yanlei
exaly   +3 more sources

Noise cancellation for continuous wave mud pulse telemetry based on empirical mode decomposition and particle swarm optimization

Journal of Petroleum Science and Engineering, 2021
Mud pulse telemetry (MPT) is the most widely implemented communication method in measurement while drilling (MWD) systems. However, the signal-to-noise ratio of received signals on surface in MPT systems is relatively low because of the various ...
Fengzhong Qu, Guozheng Jin
exaly   +2 more sources

Study on the continuous wave bit reflection mechanism in mud pulse telemetry

Geoenergy Science and Engineering
Hu Han
exaly   +3 more sources