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Q1(Year 2015)
ISSN : 1026-3098
e-ISSN : 2345-3605
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Publication Information : Volume 22 - Number 3 - Successive Number 3
Type : Article
Topics of Paper : Transaction on Mechanical Engineering
English Title : Pressure Drawdown Mechanism and Design Principle of Jet Pump Bit
English Abstract : Reducing the bottom hole differential pressure (BHDP) and so as to reduce the cuttings hold-down effect can significantly improve the rate of penetration (ROP). This paper analyzes the pressure drawdown mechanism of the jet pump bit, and then designs a novel annular jet pump bit. Using hybrid grid method, the key factors which affect the pressure drawdown capacity of the bit are discussed. The backflow below the reverse nozzle outlet is the main reason that reduces the pressure drawdown capacity of the jet pump bit. The design principle of the jet pump bit is given: the axial and radial angles are 150°-180° and 60°-75° respectively, the bit clearance should be kept below 3 mm, preferably using the vortex-jet flow combination pressure drawdown theory to reduce the bottom hole pressure, and the bit rotation speed should be as large as possible, which provide the theoretical guide for its development.
English Keywords : jet pump; bit; hydraulic jet; differential pressure; design principle
Refrences :
Number Of Pages :
From 792 to 803


Authors :
The AuthorAuthor SequenceOrganizationOrganization ( english )AffiliationEmailEducation
Dr. Hai-Yan Zhu
(Author)
1State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China    
Prof. Qing-You Liu 2State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China Professor  
Published Issues
2017
Transactions on Civil Engineering
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Transactions on Industrial Engineering
2016
2015
Transactions on Civil Engineering
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Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
Transactions on Nanotechnology
2014
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
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2013
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
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