Hydraulic piston pump is a hydraulic drive rodless pumping equipment

which is powered from the ground by the pump tubing or a dedicated channel power fluid pumped downhole pressurized after driving motor up and down reciprocating motion, will spread to the underground high-voltage power fluid drive cylinder and valve, to help downhole pumping piston. hydraulic piston pump for high gas-oil ratio, sand, high pour point oil, wax, oil, deep, deviated and horizontal wells has strong adaptability. Hydraulic piston pump oil tank monitoring system components and types: hydraulic piston pump system consists of ground power tank, high pressure triplex pumps, control manifold, wellhead control valves and downhole pump. Downhole pump is the core component of the system. Downhole pump hydraulic piston pump with a single and double acting two kinds of ground with high-pressure piston pumps. There are two processes: ① open process. Single-tube structure, with low viscosity oil for power fluid, the pipeline will reduce friction, but also reduce the viscosity of the oil extracted and mixed with the produced fluid taken out of the ground. ② closed processes. With a light oil or water as the power fluid, lubricants and preservatives to be added when water is not mixed with the hydraulic piston pump circulating their own output.