Intelligent polymer injection pump station

Abstract

An intelligent polymer injection pump station comprises a plurality of sets of polymer injection equipment, a plurality of non-contact liquid level detection devices, a signal receiving system and an intelligent control system; each set of polymer injection equipment comprises a material storage tank, a variable frequency motor power distribution system, a variable frequency motor and a polymer injection pump; the top of each material storage tank is provided with one non-contact liquid level detection device; the non-contact liquid level detection devices are electrically connected with the signal receiving system simultaneously; the intelligent control system and the signal receiving system are electrically connected with the variable frequency motor power distribution systems. According to the intelligent polymer injection pump station, the defect that a material storage system of a traditional polymer injection pump station has no real-time monitoring means is overcome, and a closed-loop control system between the material storage system and a polymer injection pump driving device is established, so that the problem that the polymer injection pump driving device still runs at a high speed in the middle and later period of material conveying caused by the constant power and the constant rotating speed output of the motor, and thus the empty absorption occurs due to long time of insufficient inlet liquid of the polymer injection pump is avoided, and the normal service life of a polymer injection pump valve unit is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of oilfield special equipment, in particular to an intelligent polymer injection pumping station. Background technique [0002] In the process of oil extraction, the role of the polymer injection pump is to inject polymer into the oil layer to increase the pressure of the oil layer, so as to ensure the smooth progress of oil extraction. The traditional polymer injection pumping station is composed of multiple sets of polymer injection equipment, and each set of polymer injection equipment includes a storage tank, a frequency conversion motor power distribution system, a frequency conversion motor and a polymer injection pump; the inlet of each polymer injection pump passes through the pipeline It is connected to the bottom of the storage tank, and the outlet is connected to the delivery pipe; the output shaft of the frequency conversion motor is connected to the high-speed shaft or crankshaft of the polymer ...

AI Technical Summary

Problems solved by technology

However, this traditional polymer injection pump station has the following problems: it uses a constant power injection method during operation, and there is no real-time monitoring means for the storage tank, and there is no stroke closed-loop control system between the storage tank and the frequency conversion motor, so The operation of the frequency conversion motor has been in the output state of constant power and constant speed. As a result, the frequency conversion motor is still running at high speed in the middle and late stages of material transportation. At this time, the liquid intake of the polymer injection pump is obviously insufficient, so it has been in a partial suction condition for a long time. It will reduce the service life of the polymer injection pump valve group, and at the same time, the power consumption of the system cannot be reasonably controlled

Images