《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.4

View Full-text

Production Evaluation of Fractured Wells in Deformed Reservoirs with Non-linear Seepage

Author of the article:

Author's Workplace：

Key Words：Non-linear seepage； Start-up pressure gradient； Stress sensitivity； Production pressure differential； Production equation

Abstract：In view of the characteristic of deformed low permeability reservoirs， based on the change of fluid flow rule after fracturing， established is a productivity equation for vertical fracture wells in low permeability reservoirs considering the common effect of the start-up pressure gradient and stress sensitivity by using the steady seepage theory. Based on the established productivity equation， analyzed are effects of the start-up pressure gradient，permeability deformation coefficient， formation contamination， etc. on productivity and oil well production index. The results show that oil well productivity decrease will be resulted from effects of start-up pressure gradient and stress sensitivity. When the start-up pressure gradient increases， oil well productivity decrease magnitude will reduce gradually and when the permeability deformation coefficient increases， oil well productivity decrease magnitude will increase gradually and formation contamination will result in increase of oil well productivity decrease magnitude. If production pressure is small， effect of start-up pressure gradient is great and stress sensitivity effect will increase as the production pressure increases. A reasonable production pressure shall be selected in actual development of deformed reservoirs.