What is "sand pump" in the context of cable tool bailers?

A sand pump, in the context of cable tool bailers, specifically refers to a type of bailer designed to lift and remove sediments, such as sand and silt, from a well. This device is employed to clear out debris and improve water flow, ensuring that the well remains operational and efficient. The sand pump operates by using the mechanical action of cable tools to create a suction effect, allowing sediment to be picked up and brought to the surface.

This functionality is crucial in groundwater management and well maintenance, especially in areas where sediment can accumulate and affect water quality or drilling effectiveness. The focus of a sand pump on sediment removal distinguishes it from other tools and methods used in groundwater extraction and well treatment processes.