Study and Implement of Downward Communication Function in Rotary Steerable Drilling System

In rotary steerable drilling system, there should be a downward communication channel to send the guided control command from ground monitor to downhole steeling tool. The downward command word has been transmitted by negative pulse of mud drilling fluid and encoded by a characteristic of three-desc...

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Bibliographic Details
Published in2009 Second International Workshop on Computer Science and Engineering Vol. 2; pp. 494 - 497
Main Authors Tang Nan, Huo Aiqing, Wang Yaolong, Cheng Weibin
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2009
Subjects
Acoustic waves
Communication system control
Computerized monitoring
Condition monitoring
Control systems
Costs
Degradation
downward communication
Drilling
drilling fluid pulse
Fluid flow control
Pulse measurements
receiving device
steering drilling
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Summary:In rotary steerable drilling system, there should be a downward communication channel to send the guided control command from ground monitor to downhole steeling tool. The downward command word has been transmitted by negative pulse of mud drilling fluid and encoded by a characteristic of three-descending and three-ascending. Downward communication receiving function in downhole tool detects the change of underground mud flow; then gets the guided control command rightly by processing and interpretation software. Several different measures are used in receiving device for improve reliability and anti-interference performance of downward transmitting. Experimental results show the feasibility of this downward transmission scheme.
ISBN:9781424452859
9780769538815
0769538819
1424452856
DOI:10.1109/WCSE.2009.860