Improvement of Steam Injection Efficiency in Horizontal Well with the Semi-Analytical Model: A Case Study of Liaohe Oilfield Steam Injection Well

Table 2

Parameters of reservoir, wellbore and steam injection.

Parameter	Value	Unit	Parameter	Value	Unit
Reservoir thickness	287	m	Length of horizontal well	195.3	m
Reservoir temperature	18.8	°C	Inner diameter of casing	0.0807	m
Reservoir pressure	2.38	MPa	Outer diameter of casing	0.0889	m
Permeability	1940	mD	Wellbore radius	0.12	MPa^-1
Porosity	0.32	—	Perforation density	12	m^-1
Water saturation	0.35	—	Perforation hole radius	0.0075	m
Oil viscosity	1366	mPa·s	Formation thermal conductivity	1.730	W/m/°C
Oil volume factor	1.05	m^3/m^3	Cement thermal conductivity	0.933	W/m/°C
Formation water volume factor	1.01	m^3/m^3	Steam pressure at the heel	5.13	MPa
Formation thermal diffusion coefficient	0.108	m^2/d	Steam temperature at the heel	336.5	°C
Drainage area	29700	m^2	Steam injection rate	6.23	t/h