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

Table 8

Orthogonal design factors and level values in the combined operation.

Parameter	Influence factor
	Steam injection velocity (t/d)	Shut-in time (d)	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
1	120	2	3500	260	9	2000	0.04	6	0.8
2	130	3	4000	265	12	2500	0.06	9	0.9
3	140	4	4500	270	15	3000	0.08	12	1
4	150	5	5000	275	18	3500	0.10	15	1.1
5									1.2
6									1.3
7									1.4
8									1.5