DocumentCode
1991024
Title
A study on wellhead backpressure automatic control system of coalbed methane drilling
Author
Xie, Chong ; Li, Dan
Author_Institution
Mechatron. Eng. Coll., Southwest Pet. Univ., Chengdu, China
fYear
2011
fDate
16-18 Sept. 2011
Firstpage
5722
Lastpage
5725
Abstract
During coalbed methane drilling operations, Downhole pressure has to be controlled accurately for reservoir protection. The downhole pressure can be controlled by restricting the drilling fluid flow through a choke valve at the top of the well. This paper presents a closed-loop wellhead back pressure automatic control scheme based on a low order wellhead backpressure control model. The researching and simulation results show that the wellhead backpressure automatic control system can meet the requirements of coalbed methane drilling.
Keywords
closed loop systems; coal; drilling (geotechnical); mining industry; valves; choke valve; closed loop wellhead backpressure automatic control; coalbed methane drilling; downhole pressure; drilling fluid flow; reservoir protection; wellhead backpressure automatic control system; Asia; Coal; Educational institutions; Mechatronics; Natural gas industry; Petroleum; Reservoirs; automatic control; coalbed methane drilling; wellhead backpressure;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical and Control Engineering (ICECE), 2011 International Conference on
Conference_Location
Yichang
Print_ISBN
978-1-4244-8162-0
Type
conf
DOI
10.1109/ICECENG.2011.6057887
Filename
6057887
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