TY  - EJOU
AU  - Shubao, Tian 
AU  - Gang, Lei 
AU  - Shunli, He 

TI  - Investigation of the Effect of Dynamic Capillary Pressure on Waterflooding in Extra Low Permeability Reservoirs
T2  - Structural Longevity

PY  - 2013
VL  - 9
IS  - 2
SN  - 1944-6128

AB  - The dynamic capillary pressure is one of the important factors affecting the two phase percolation mechanism of waterflooding in extra low permeability reservoir. It is crucial to understand the effect of dynamic capillary pressure
on oil displacement process in order to improve the waterflooding effectiveness.
In this paper the dynamic capillary pressure effect was investigated quantitatively
and a numerical flow model was built, in which the dynamic capillary pressure is
considered. The effects of dynamic capillary pressure and water injection rate on
the waterflooding effectiveness were analyzed. The results show that the dynamic
capillary pressure has a significant influence on the oil displacement effectiveness.
The bigger the dynamic capillary pressure, the more adverse waterflooding effectiveness is obtained. The water injection rate will influence the change of fluid
saturation in the reservoir, which leads to the different dynamic capillary pressure
effect. There is an optimum water injection rate which causes the minimum dynamic capillary pressure and percolation resistance.
KW  - Extra low permeability reservoir
KW  -  dynamic capillary pressure
KW  -  twophase percolation flow
KW  -  water injection
KW  -  development effectiveness

DO  - 10.3970/sl.2013.009.105