Performance Evaluation of STARPAM Polymer and Application in High Temperature and Salinity Reservoir

Table 1

Standard of oil layer division in an oil field.

Category	Screening criteria
	Original formation temperature / °C	Formation water salinity / mg/L	Ca^2+ and Mg^2+ content / mg/L
Class I	≤70	≤10000	≤200
Class II	70-80	10000-30000	200-400
Class III	80-93	30000-1000000	≥400
Class IV	Oil layer is sanding seriously and has poor connectivity of the oil layer