Results 41 to 50 of about 1,642,785 (302)
Research on Attenuation Motion Test Based on Double-N Six-Light-Screen System
Photonics, 2022 In this paper, to improve the testing accuracy of moving objects, the speed attenuation caused by air resistance was introduced into a double-N six-light-screen test system, and the pulse-time axis was recalibrated.
Hai Li +3 more
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Mine-used mud pulse wireless measurement while drilling device and its applicatio
Gong-kuang zidonghua, 2019 For problems of wired while drilling device (MWD) which used central cable drilling rig as signal transmission channel such as complex drilling rig structure, limited mechanical behavior, poor anti-interference performance and so on, a mine-used mud ...
FANG Jun +3 more
doaj +1 more source
Mud Pulse Logging While Drilling Telemetry System: Design, Development, and Demonstrations [PDF]
, 1978 Mud pulse telemetry is a method of transmitting information from the vicinity of the drill bit to the surface drilling platform while drilling. Information can be conveyed through a flowing column of drilling mud by the presence or absence of pressure ...
Spinnler, R. F., Stone, F. A.
core +1 more source
Research on Current Decoupling Controller of Continuous Wave Mud Pulser
Shiyou jixie, 2022 As the latest member in mud pulse logging while drilling technology,the continuous wave mud pulser has much higher data transmission efficiency than the positive pulse mud pulse remote transmission system widely used at present.The dynamic performance of
Yan Hongliang, Geng Yan, Zhai Weizhi
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Angewandte Chemie, EarlyView.Photocycloaddition in stilbene‐type salt polymorphs exhibit distinct light‐driven responses: OHT‐TI shows a violent photosalient effect under visible and NIR (two‐photon) irradiation, whereas OHT‐TII reacts statically. Packing and computational analysis reveals that shell‐like structures in OHT‐TI frustrate structural relaxation, accumulating explosive
Emanuela Santagata +10 more
wiley +2 more sources
Frontiers in Earth Science, 2021 Warming air and sea temperatures, longer open-water seasons and sea-level rise collectively promote the erosion of permafrost coasts in the Arctic, which profoundly impacts organic matter pathways.
George Tanski +22 more
doaj +1 more source
Pengambilan Data Inklinasi dan Azimuth dalam Proses Measurement While Drilling (MWD) Menggunakan Metode Mud-pulse Telemetry pada Sumur X Lapangan Y [PDF]
, 2023 Mud Pulse Telemetry dengan Continuous Wave System dapat mengirimkan data secara kontinu dan realtime serta dapat mengukur hingga kedalaman 1,268 meter.
Fauzan, Geusan Buana
core
A Joint Multiuser Detection Scheme for UWB Sensor Networks Using Waveform Division Multiple Access
IEEE Access, 2017 A joint multiuser detection (MUD) scheme for wireless sensor networks (WSNs) is proposed to suppress multiple access interference (MAI) caused by a large number of sensor nodes.
Zhendong Yin +4 more
doaj +1 more source
Petroleum Exploration and Development, 2012 To extract original pulse signals in measurement while drilling (MWD), different low-pass filtering methods were designed based on intrinsic mode functions through the ensemble empirical mode decomposition (EEMD).
Yi ZHENG +3 more
doaj +1 more source
STUDY ON THE PARAMETER OPTIMIZATION OF VALVE HEAD OF VERTICAL WELL INCLINOMETER (MT)
Jixie qiangdu, 2023 The vertical well inclinometer is widely used in downhole data measurement, wherein the mud pulse generator used for data transmission has substantial significance to the accuracy and stability of data.
TANG LiPing +6 more
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