Patent ID: 11898552
Assignee: SK INNOVATION CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  E | IPC E  F

Claim 8:
9. A system for predicting failures of rod pumps using a scaled load ratio, the system comprising:
a storage device storing data in the system, the data comprising current maximum/minimum loads on a surface rod, a current pump speed obtained from a sensor installed at a rod pump, scaled load ratios, an average of the scaled load ratios in a rolling window, a ratio of abnormal events, a size of the rolling window, upper and lower bounds of a normal range of the scaled load ratio, an alert period, and an alert frequency ratio; and
a processor executing software using the data stored in the storage device, wherein the software predicts whether the rod pump has an abnormality by calculating the scaled load ratio on the basis of the current maximum/minimum loads on the surface rod stored in the storage device and data of maximum/minimum loads on the surface rod in normal operation.