Study on the effect of fracture characteristics to ultra-low permeability reservoirs development

Author

Song, Hongqing ; Huang, Xiaohe ; Lou, Yu

Author_Institution

Sch. of Civil & Environ. Eng., Univ. of Sci. & Technol. Beijing, Beijing, China

fYear

2011

fDate

15-17 July 2011

Firstpage

3559

Lastpage

3562

Abstract

A mathematical model was derived for flow in ultra-low permeability reservoir with hydraulic fracturing, including three coupling sections: low-velocity non-Darcy flow in matrix, flow in elliptical area around fractures and nonlinear flow in fractures. Based on data from test areas, the effects on hydraulic fracturing development of artificial fracture length, flow conductivity, and angle to development effect were clarified by numerical simulations. According to fracture characteristics and production data of test areas, effect of natural fracture pattern, and degree of fracture development on developing ultra-low permeability reservoir was studied. Analysis results show that optimal values of half-length of artificial fracture are 70m~85m, flow conductivity 30D.cm~40D.cm and fracture angle 0~25 degrees.

Keywords

confined flow; fracture; hydraulic systems; numerical analysis; permeability; reservoirs; structural engineering; artificial fracture length; flow conductivity; fracture characteristics; hydraulic fracturing development; low-velocity nonDarcy flow; mathematical model; numerical simulations; size 70 m to 85 m; ultralow permeability reservoir development; Conductivity; Couplings; Mathematical model; Permeability; Petroleum; Reservoirs; Transient analysis; artificial fracture; degree of fracture development; fracture-matrix; natural fracture; ultra-low permeability;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on

Conference_Location

Hohhot

Print_ISBN

978-1-4244-9436-1

Type

conf

DOI

10.1109/MACE.2011.5987761

Filename

5987761