Results 241 to 250 of about 1,642,785 (302)
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Research on MWD Mud Pulse Signal Extraction Algorithm

Advanced Materials Research, 2014
The extraction and correct recognition of mud pulse signal in Wireless Measurement While Drilling was a key technology in petroleum drilling process. It determined whether the well course in the petroleum drilling process was right or not. This article has carried out the numerical modeling of mud pulse signal and illustrated its signal feature.
Guo Yun Zhang, Bing Tu
exaly   +2 more sources

Research on mud pulse signal detection based on adaptive stochastic resonance

Journal of Petroleum Science and Engineering, 2017
Abstract The original data signals have small amplitude with a long distance signal transmission from the underground to the ground. And thousands of meters of drilling mud channel in the drilling process will contain a lot of noise sources. Therefore, the original mud pulse signals are submerged by the complex noise environment.
Shanshan Lv
exaly   +2 more sources

A novel method to improve mud pulse telemetry performance during gaseated underbalanced drilling

Journal of Petroleum Science and Engineering, 2022
Hongtao Li   +2 more
exaly   +2 more sources

Newtonized sparse channel estimation for mud pulse telemetry

Geoenergy Science and Engineering
Zitong Sha   +7 more
openaire   +2 more sources

Soft Decision Decoding in Mud Pulse Telemetry System

2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring), 2020
In this paper, we propose a new probabilistic decoding method for the measurement-while-drilling telemetry system. The mud pulse telemetry system transmits the data from inside a borehole to the surface during drilling operations. The mud pulser is equipped with a mechanical valve, which partly shuts the mud stream for a short time, realizing ...
Andrey Ivanov 0001   +3 more
openaire   +1 more source

Widely linear RLS equalizer with variable forgetting factor and UD factorization for mud pulse telemetry

AEU - International Journal of Electronics and Communications
Yanfeng Geng   +2 more
exaly   +2 more sources

Mud Pulse MWD Systems Report

Journal of Petroleum Technology, 1981
Summary Measurement-while-drilling (MWD) systems, using mud pulse telemetry, are now available to the industry. The most popular sensor package is for directional drilling measurements. Accuracy of such measurements has been proved under field conditions and has resulted in considerable savings in rig time.
Marvin Gearhart   +2 more
openaire   +1 more source

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

Geoenergy Science and Engineering
Hu Han   +4 more
openaire   +2 more sources

Channel Equalizer Design for Continuous Wave Mud Pulse Based on OS-ELM

Cybersecurity and Cyberforensics Conference, 2023
Mud pulse transmission technology is one of the core technologies for measurement while drilling. In the process of continuous wave mud pulse signal up to the ground, there will be large amplitude attenuation and inter-code interference caused by the ...
Junkai Wang   +3 more
semanticscholar   +1 more source

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