A differential wide field electromagnetic method and its application in alkaline-surfactant-polymer (ASP) flooding monitoring

LI Diquan,HE Jishan

Table 1. Resistivity values of the core plugs before and after different displacements.

Core Layer	Resistivity/(Ω·m)
Core Layer	Water flooding Before After		Polymer flooding Before After		ASP flooding Before After
S II-7	22.61	15.45	20.31	10.09	21.25	4.96
S II-8	27.51	15.01	26.34	10.76	28.03	5.16
S II-9	24.65	14.67	21.32	9.09	22.31	4.17
S II-10	22.83	15.85	25.33	10.21	24.21	4.45
S II-11	25.13	14.98	21.22	10.13	2233	5.03
S II-12	24.34	14.62	25.32	10.24	2316	4.95
S II-13	24.34	14.32	23.34	10.67	24.28	5.01
S II-14	24.14	14.12	27.45	9.76	26.35	4.78