Oil-gas cyclone separation settler for oil well pump

Abstract

The invention discloses an oil-gas hydrocyclone separation settler for an oil well pump. The oil-gas hydrocyclone separation settler comprises a screwed plug, a lower outer pipe, a central pipe, an upper outer pipe, a reducing coupling, a lengthened short joint and an upper coupling, the device is characterized in that a pipe seat is arranged in the middle in an upper outer pipe cavity; the upper end of the central pipe is connected with the lower port of the inner cavity of the reducing coupling, and the lower end of the central pipe penetrates through the central hole of the pipe seat and then is inserted into the lower end of the inner cavity of the lower outer pipe; and a spiral flow guide pipe is arranged in the lower outer pipe cavity and arranged on the outer side of the central pipe in a sleeving mode, the upper end of the spiral flow guide pipe is connected with a central hole of the pipe seat, and umbrella-shaped spiral flow guide pieces are arranged on the outer wall of the spiral flow guide pipe located in the lower outer pipe cavity. An outer exhaust hole is formed in the side wall of the upper outer pipe above the pipe seat; and a liquid inlet hole is formed in the side wall of the upper outer pipe below the pipe seat. Gas, liquid and solid in oil can be separated, the amount of gas and the amount of solid entering the pump are effectively reduced, and the device is particularly suitable for a producing well with the gas-liquid ratio within 2000.

Description

technical field [0001] The invention relates to an improvement of an oil pump for an oil well, in particular to an oil and gas cyclone separation settler for an oil pump, which is especially suitable for use in an oil production well with a gas-liquid ratio within 2000 and installed on the oil pump. Background technique [0002] In the current oil well production system, rod type oil well pumps or screw type oil well pumps are generally used for oil production operations. Due to the different well conditions of oil production wells, the service life of the used oil well pumps is also different; for oil production wells with a gas-liquid ratio of less than 2000, the currently used oil well pumps show shortcomings: when the bottom hole pressure is lower than the bubble point pressure , the dissolved natural gas in the crude oil will continue to separate out, causing the gas and liquid two-phase fluid to enter the oil well pump at the same time. After the gas enters the pump ba...

AI Technical Summary

Problems solved by technology

Due to the different well conditions of oil production wells, the service life of the oil well pumps used is also different; for oil production wells with a gas-liquid ratio of less than 2000, the current oil well pumps show shortcomings: when the bottom hole pressure is lower than the bubble point pressure , the dissolved natural gas in the crude oil will continue to separate out, causing the gas and liquid two-phase fluid to enter the oil well pump at the same time. After the gas enters the pump barrel, the amount of liquid entering the pump is reduced, thereby reducing the pump efficiency; A large amount of gas will cause "air lock" phenomenon; if excessive gas enters the pump, firstly, it will cause "dry pumping" of the plunger and accelerate the wear of the pump barrel; secondly, because the thermal conductivity of gas is much smaller than that of liquid, so Excessive gas entering the pump will cause high temperature inside the pump, resulting in damage to rubber and other parts, reducing the service life of the system

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