《Natural Gas and Oil》

News

Source Journal for Chinese S&T Papers and Citation2014/9/27
Announcement for Academic Dishonorable Behaviors2014/5/23

more>>

Internet Workstation

Edition and Publication

Edition and Publication:
< Natural Gas and Oil > Editorial Department
Hosted by:
China Petroleum Engineering & Construction Corporation Southwest Company
Authorized by:
China Petroleum Engineering & Construction Corporation
Co-hosted by:
Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
Address:
No.6, Shenghua Road, High-tech District, Chengdu, Sichuan, China
Postal Code:
610041
Tel:
028-86014709
028-86014500
Email:
cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
CN 51-1183/TE

Links

Your Position ：Home->Past Journals Catalog->2012 Vol.6

View Full-text

Analysis on Productivity Equation of Fractured Well in Low Permeability Gas Reservoir with Non-Linear Seepage

Author of the article:

Author's Workplace：

Key Words：Low permeability gas reservoir； Elliptical flow； Pressure gradient； Slippage effect； Stress sensitivity； Vertical fracture well； Productivity equation

Abstract： A lot of research shows that gas seepage characteristics may be affected by start-up pressure gradient， slippage effect and stress sensitivity. In view of characteristics of low permeability gas reservoir， based on elliptical flow mode and steady seepage theory， introduced is a new quasi pressure form and established is a productivity prediction equation for the finite conductivity vertical fracture well in low permeability gas reservoir and prediction results show that start-up pressure gradient and stress sensitivity may affect gas well production capacity， the capacity will continuously drop along with increase of start-up pressure gradient and stress sensitivity coefficient. However， slippage effect may increase gas well production capacity， the capacity will continuously rise along with increase of slippage coefficient. In low permeability gas reservoir fracturing design， increase of fracture length is more important than increase of fracture flow conductivity and optimal fracture flow conductivity exists in certain fracture length condition. Example calculation results show that above derived productivity prediction equation is reliable.