A Fault Identification Method for Electric Submersible Pumps Based on DAE-SVM

Table 2

.Description of the variables of the ESP.

No.	Symbol	Variable name (unit)	Score
1	DLP	Daily liquid production (m^3/day)	0.38765
2	WT	Wellhead temperature (°C)	0.15278
3	TWV	Test water volume (m^3/day)	0.10888
4	WGR	Water-gas ratio (%)	0.06667
5	PC	Pump current (A)	0.05613
6	PV	Pump voltage (V)	0.03703
7	OP	Oil pressure (kPa)	0.03141
8	OGR	Oil-gas ratio (%)	0.03131
9	TLV	Test liquid volume (t)	0.02459
10	DWP	Daily water production (m^3/day)	0.02244
11	DGP	Daily gas production (m^3/day)	0.02192
12	DOP	Daily oil production (m^3/day)	0.02021
13	WC	Water content (wt%)	0.01251
14	TOV	Test oil volume (t)	0.01157
15	GOR	Gas-oil ratio (%)	0.00533
16	BFP	Bottomhole flow pressure (kPa)	0.00220
17	CP	Casing pressure (kPa)	0.00189
18	OD	Oil density (k/l)	0.00151
19	PIT	Pump inlet temperature (°C)	0.00132
20	PF	Pump frequency (MHz)	0.00122
21	MT	Motor temperature (°C)	0.00093
22	TGV	Test gas volume (t)	0.00050