Effect of initial water flooding on the performance of polymer flooding for heavy oil production | Oil & Gas Science and Technology

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Table 5

Summary of experiments results at the end of water and polymer floods.

Set	Experiment	Water breakthrough time (PVI)	Recovery after 1 PV water flood	Recovery after water flood		Recovery after 1 PV polymer flood	Recovery after polymer flood
Set	Experiment	Water breakthrough time (PVI)	RF (%)	PV injected	RF (%)	RF (%)	PV injected	Incremental RF (%)
1	S0	0.27	–	–	–	55.2	1.7	59
1	T1	<0.1	21.2	1.8	28	45.2	2	47
2	T2v	0.028	15.5	5.1	26	22.7	3	37
	T3b	0.044	22.0	2.3	29	36.6	3.2	38
	T4b	0.044	30.4	2.5	39	28.6	3	34
	T5g	0.038	26.3	4.5	37	–	Plugging	Plugging
	T6g	0.043	18.9	2.3	23	40.7	2	44
	T7g	0.042	25.6	2.7	37	36.5	1.2	38
	S8	0.23	–	–	–	58.2	3	66

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