Frequency-conversion speed regulating device and frequency-conversion speed regulating method applied to oilfield water injection system

Abstract

The invention discloses a frequency-conversion speed regulating device applied to an oilfield water injection system. The frequency-conversion speed regulating device applied to the oilfield water injection system is mainly composed of a water injection pump (1), a pressure sensor (2), a frequency-conversion speed regulator (3) and a central control processor (4), wherein the pressure sensor (2) and the frequency-conversion speed regulator (3) are respectively connected with the water injection pump (1), and the central control processor (4) is connected with the pressure sensor (2) and the frequency-conversion speed regulator (3). The invention further discloses a frequency-conversion speed regulating method based on the frequency-conversion speed regulating device. The frequency-conversion speed regulating device achieves the aims of conducting constant voltage water injection, saving energy and reducing consumption, improving automatic management level, and saving a large amount of maintenance fund, a frequency-conversion speed regulating system can enable a machine pump to achieve soft boot under the condition of load, and the frequency-conversion speed regulating device effectively restrains and prevents power grids and mechanical equipment from being impacted by big electric current, prolongs pump inspection period, and greatly reduces cost of pump inspection.

Description

technical field [0001] The invention relates to a frequency conversion speed regulation device and a frequency conversion speed regulation method applied to an oilfield water injection system. Background technique [0002] Water injection is a very important production method in oilfield development. It can effectively replenish formation energy and play an active role in improving oil recovery and ensuring high and stable production in oilfields. However, water injection itself is also a large energy consumer. The power consumption of the water injection system is huge, accounting for about 33% to 56% of my country's oilfield production electricity consumption. Moreover, the energy consumption of water injection will rise sharply with the rise of the comprehensive water content of the oil field. Therefore, the energy saving and consumption reduction of the water injection system is of great significance for reducing the production cost of the oil field. According to surve...

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Problems solved by technology

However, as the difficulty of oilfield development increases, the efficiency of water injection systems in most oilfields does not meet the standard requirements

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