Identifying potential problems in a pumpjack

A computer system comprising:

• one or more processing units;
• and
• a memory coupled to the one or more processing units and storing instructions thereon, the instructions, when executed by the one or more processing units, performing operations comprising:
• obtaining a series of indicator diagrams corresponding to strokes of a pumpjack over a specific time duration, each indicator diagram representing a relationship between location and load of a rod of the pumpjack throughout a stroke of the pumpjack;
• for each indicator diagram of the series of indicator diagrams:
• dividing each indicator diagram into a plurality of location segments in a direction of location of the rod, and
• obtaining load difference features between upstroke loads and corresponding downstroke loads in the plurality of location segments;
• identifying a location segment with an abnormal load difference feature based on a time series data of load difference feature corresponding to one of the plurality of location segments, wherein the time series data of load difference feature includes a series of data points of load difference feature of the one of the plurality of location segments in time order;
• and
• providing an indication of a potential pumpjack problem based, at least in part, on the identification of the location segment with the abnormal load difference feature.

A computer program product comprising a computer readable storage medium having stored thereon:

• program instructions programmed to obtain a series of indicator diagrams corresponding to strokes of a pumpjack over a specific time duration, each indicator diagram representing a relationship between location and load of a rod of the pumpjack throughout a stroke of the pumpjack;
• for each indicator diagram of the series of indicator diagrams:
• program instructions programmed to divide each indicator diagram into a plurality of location segments in a direction of location of the rod, and
• program instructions programmed to obtain load difference features between upstroke loads and corresponding downstroke loads in the plurality of location segments;
• program instructions programmed to identify a location segment with an abnormal load difference feature based on a time series data of load difference feature corresponding to one of the plurality of location segments, wherein the time series data of load difference feature includes a series of data points of load difference feature of the one of the plurality of location segments in time order;
• and
• program instructions programmed to provide an indication of a potential pumpjack problem based, at least in part, on the identification of the location segment with the abnormal load difference feature.