Recovery Method and Parameter Optimization of a Pilot Test for Conformance Control Flooding and Thermal Recovery in the Offshore Heavy Oilfield

Table 10

Intuitive analysis table of the B6 well group with combined operation.

Parameter	Steam injection velocity (t/d)	Shut-in time (d)	Steam injection quantity in a cycle (t)	Steam injection temperature (°C)	Cycle time of thermal fluid huff and puff (month)	Polymer concentration (mg/L)	Slug size (PV)	Interval time of polymer injection (month)	Production-injection ratio
Mean value 1	11.151	11.157	11.472	11.025	10.610	11.122	11.266	11.176	10.658
Mean value 2	11.151	11.278	11.232	11.122	10.825	11.090	11.182	11.138	10.933
Mean value 3	11.124	11.053	10.940	11.223	11.333	11.195	11.126	11.112	11.152
Mean value 4	11.168	11.107	10.950	11.224	11.825	11.187	11.021	11.167	11.098
Mean value 5									11.217
Mean value 6									11.224
Mean value 7									11.391
Mean value 8									11.515
Prior level	150	3	3500	275	18	3000	0.04	6	1.5
Difference of mean value between the maximum and minimum	0.044	0.225	0.532	0.199	1.215	0.106	0.245	0.064	0.857