NDLI: Study of downward communication receiver in rotary steerable drilling tool based on turbine generator

Content Provider	IEEE Xplore Digital Library
Author	Huo Aiqing He Yuyao Wang Yuelong Tang Nan Cheng Weibin
Copyright Year	2010
Description	Author affiliation: College of Marine, Northwestern Polytechnical University, Xi'an 710062, China (Huo Aiqing; He Yuyao) \|\| Key Laboratories of Drilling Rigs Controlling Technique, Xi'an Shiyou University 710065, China (Wang Yuelong; Tang Nan; Cheng Weibin)
Abstract	For the existence issues of underground information receiving at drilling, such as the installation space in the drill collar, installation location, and connections to the measurement circuit, etc., turbine generator as detection devices was proposed to achieve downward information received. The instruction encoding was built, and the effective downhole control instruction was generated by the use of drilling fluid pump displacement to format three descending and three ascending pulse transmission modes. The internal structure and working principle of turbine generator were outlined. The receiving of downhole signal was achieved by detecting changes of the turbine generator output voltage. Pulse counting method was used for pulse width measurement. In order to improve the accuracy and to resistant interference in the identification of downhole information, some measures were taken on software and hardware. A linear relationship between the drilling fluid displacement and the turbine generator output voltage was determined through the hydraulic experimental study. The laboratory experiment prove that the three descending and three ascending pulse transmission method is reliable and the receiving device is feasible.
Starting Page	4210
Ending Page	4213
File Size	142962
Page Count	4
File Format	PDF
ISBN	9781424462636
e-ISBN	9787894631046
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-29
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Chinese Association of Aut
Subject Keyword	Drilling Fluids Voltage measurement Hydraulic Test Pulse measurements Drilling Fluid Pulse Downward Communication Turbine Generator Generators Encoding Rotary Steerable Drilling Tool Turbines
Content Type	Text
Resource Type	Article

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