Models of steam-assisted gravity drainage (SAGD) steam chamber expanding velocity in double horizontal wells and its application

ZHOU You,LU Teng,WU Shouya,SHI Lanxiang,DU Xuan,WANG Junling

Table 1 Parameters of well pair A in SAGD block.

Parameters Value Parameters Value Porosity 32% Formation thickness 15 m Permeability 2 000× 10-3 μm2 Top cap rock thickness 10 m Oil saturation 75% Bottom cap rock thickness 5 m Top buried depth 200 m Length of horizontal section 400 m Initial temperature 20 °C Well spacing 100 m Reservoir pressure 2 MPa Vertical distance between two horizontal wells 5 m Oil viscosity (50 °C) 2×104 mPa?s Operation pressure of the steam chamber 2 MPa