• Home
  • Browse
    • Current Issue
    • By Issue
    • By Author
    • By Subject
    • Author Index
    • Keyword Index
  • Journal Info
    • About Journal
    • Aims and Scope
    • Editorial Board
    • Advisory Board
    • Editorial Staff
    • Publication Ethics
    • Indexing and Abstracting
    • Related Links
    • FAQ
    • Peer Review Process
    • News
  • Guide for Authors
  • Submit Manuscript
  • Reviewers
  • Contact Us
 
  • Login
  • Register
Home Articles List Article Information
  • Save Records
  • |
  • Printable Version
  • |
  • Recommend
  • |
  • How to cite Export to
    RIS EndNote BibTeX APA MLA Harvard Vancouver
  • |
  • Share Share
    CiteULike Mendeley Facebook Google LinkedIn Twitter Telegram
Scientia Iranica
Articles in Press
Current Issue
Journal Archive
Volume Volume 25 (2018)
Volume Volume 24 (2017)
Volume Volume 23 (2016)
Volume Volume 22 (2015)
Issue Issue 6
Transactions on Nanotechnology (F)
Issue Issue 6
Transactions on Industrial Engineering (E)
Issue Issue 6
Transactions on Computer Science & Engineering and Electrical Engineering (D)
Issue Issue 6
Transactions on Chemistry and Chemical Engineering (C)
Issue Issue 6
Transactions on Mechanical Engineering (B)
Issue Issue 6
Transactions on Civil Engineering (A)
Issue Issue 5
Transactions on Mechanical Engineering (B)
Issue Issue 5
Transactions on Civil Engineering (A)
Issue Issue 4
Transactions on Mechanical Engineering (B)
Issue Issue 4
Transactions on Civil Engineering (A)
Issue Issue 3
Transactions on Nanotechnology (F)
Issue Issue 3
Transactions on Industrial Engineering (E)
Issue Issue 3
Transactions on Computer Science & Engineering and Electrical Engineering (D)
Issue Issue 3
Transactions on Chemistry and Chemical Engineering (C)
Issue Issue 3
Transactions on Mechanical Engineering (B)
Issue Issue 3
Transactions on Civil Engineering (A)
Issue Issue 2
Transactions on Mechanical Engineering (B)
Issue Issue 2
Transactions on Civil Engineering (A)
Issue Issue 1
Transactions on Mechanical Engineering (B)
Issue Issue 1
Transactions on Civil Engineering (A)
Volume Volume 21 (2014)
Volume Volume 20 (2013)
Volume Volume 17 (2010)
Volume Volume 16 (2009)
Volume Volume 15 (2008)
Volume Volume 14 (2007)
Volume Volume 13 (2006)
Volume Volume 12 (2005)
Volume Volume 11 (2004)
Volume Volume 10 (2003)
Volume Volume 9 (2002)
Volume Volume 8 (2001)
Volume Volume 7 (2000)
Volume Volume 6 (1999)
Volume Volume 5 (1998)
Volume Volume 4 (1997)
Volume Volume 3 (1996)
Volume Volume 2 (1995)
Volume Volume 1 (1994)

Scientia Iranica

Scientia Rank

Zhu, H., Liu, Q. (2015). Pressure Drawdown Mechanism and Design Principle of Jet Pump Bit. Scientia Iranica, 22(3), 792-803.
Hai-Yan Zhu; Qing-You Liu. "Pressure Drawdown Mechanism and Design Principle of Jet Pump Bit". Scientia Iranica, 22, 3, 2015, 792-803.
Zhu, H., Liu, Q. (2015). 'Pressure Drawdown Mechanism and Design Principle of Jet Pump Bit', Scientia Iranica, 22(3), pp. 792-803.
Zhu, H., Liu, Q. Pressure Drawdown Mechanism and Design Principle of Jet Pump Bit. Scientia Iranica, 2015; 22(3): 792-803.

Pressure Drawdown Mechanism and Design Principle of Jet Pump Bit

Article 5, Volume 22, Issue 3, June 2015, Page 792-803  XML PDF (5815 K)
Authors
Hai-Yan Zhu; Qing-You Liu
State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
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. 
Keywords
jet pump; bit; hydraulic jet; differential pressure; design principle
Statistics
Article View: 998
PDF Download: 125
Home | Glossary | News | Aims and Scope | Sitemap
Top Top

© 2017 scientiairanica

Journal Management System. Designed by sinaweb.