Research Article
Research on Feature Extraction of Indicator Card Data for Sucker-Rod Pump Working Condition Diagnosis
Table 1
Normalized Fourier Descriptors of 12 typical fault indicator cards.
| ā | FD1 | FD2 | FD3 | FD4 | FD5 | FD6 | FD7 | FD8 | FD9 | FD10 |
| Top pump bumping | 1 | 0.04825 | 0.06673 | 0.00921 | 0.01938 | 0.01228 | 0.01789 | 0.00373 | 0.00615 | 0.00368 | Bottom pump bumping | 1 | 0.04190 | 0.06150 | 0.01079 | 0.02105 | 0.00580 | 0.02075 | 0.00018 | 0.00525 | 0.00382 | Broken-dropped of sucker rod | 1 | 0.00256 | 0.07137 | 0.04122 | 0.00181 | 0.00423 | 0.01041 | 0.00278 | 0.00612 | 0.00312 | Insufficient fluid supply | 1 | 0.09135 | 0.07921 | 0.03970 | 0.02756 | 0.00268 | 0.00274 | 0.02133 | 0.00656 | 0.00519 | Leakage of traveling valve | 1 | 0.02729 | 0.08138 | 0.01280 | 0.02071 | 0.02071 | 0.01073 | 0.00803 | 0.00936 | 0.00458 | Leakage of standing valve | 1 | 0.04080 | 0.08172 | 0.01214 | 0.02129 | 0.01990 | 0.00740 | 0.00619 | 0.00890 | 0.00371 | Leakage of both valves | 1 | 0.00256 | 0.08158 | 0.01256 | 0.02517 | 0.01928 | 0.00683 | 0.00725 | 0.00912 | 0.00369 | Stuck piston | 1 | 0.00823 | 0.07259 | 0.01193 | 0.00158 | 0.00925 | 0.00957 | 0.00458 | 0.00349 | 0.00344 | Gas lock | 1 | 0.08365 | 0.06759 | 0.02358 | 0.02135 | 0.00245 | 0.00256 | 0.02325 | 0.00589 | 0.00623 | Liquid hammer | 1 | 0.09195 | 0.06064 | 0.02082 | 0.02073 | 0.00283 | 0.00255 | 0.04195 | 0.00764 | 0.00082 | Sand inflow | 1 | 0.00925 | 0.07436 | 0.00564 | 0.02577 | 0.00556 | 0.01728 | 0.00058 | 0.00278 | 0.00166 | Plunger out pump barrel | 1 | 0.04255 | 0.08212 | 0.01223 | 0.02019 | 0.01625 | 0.00722 | 0.00539 | 0.00693 | 0.00316 |
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