Research on Feature Extraction of Indicator Card Data for Sucker-Rod Pump Working Condition Diagnosis

Table 2

Geometric Moment Vectors of typical faults indicator card.

	𝑓1	𝑓2	𝑓3	𝑓4	𝑓5	𝑓6	𝑓7
Top pump bumping	0.4392	0.0658	0.0175	0.0977	0.0038	0.0250	0.0015
Bottom pump bumping	0.4936	0.0928	0.0302	0.1365	0.0084	0.0415	0.0027
Broken-dropped of sucker rod	0.5877	0.1857	0.1261	0.2652	0.0480	0.1142	0.0067
Insufficient fluid supply	0.7061	0.0615	0.1619	0.3834	0.0095	0.0939	0.0951
Leakage of traveling valve	0.4278	0.0646	0.0117	0.0920	0.0030	0.0234	0.0005
Leakage of standing valve	0.4549	0.0827	0.0371	0.1151	0.0073	0.0331	0.0018
Leakage of both valves	0.4997	0.1340	0.0671	0.1636	0.0171	0.0599	0.0016
Stuck piston	3.9352	5.6349	8.3123	49.690	1003.6	117.92	111.89
Gas lock	0.9168	0.1321	0.6305	0.7222	0.1330	0.2230	0.4689
Liquid hammer	0.4799	0.0552	0.0031	0.1165	0.0019	0.0273	0.0011
Sand inflow	0.4677	0.0792	0.0314	0.1161	0.0064	0.0326	0.0028
Plunger out pump barrel	0.4730	0.1149	0.0732	0.1509	0.0156	0.0511	0.0028