What is the process of multi-phase mixing of oil and gas in a single screw pump?

In oil production, oil well production is often accompanied by a certain amount of natural gas, water and solid particles.
In oil production, oil well production is often accompanied by a certain amount of natural gas, water and solid particles. In order to reduce the back pressure of the wellhead, increase the output of crude oil, improve the development efficiency, and achieve the purpose of closed transmission of oil and gas, it is necessary to pressurize and transport the multiphase mixed medium of oil and gas with the multiphase mixed oil pump.

The single-screw pump works by the rotor of the same fixed profile in the stator of the corresponding inner profile, forming a special contact line to separate the stator cavity, and the contact line is called a seal line. When the rotor rotates according to a certain trajectory, the sealing line moves axially, and also causes the stator cavity to move axially, that is, the volume displacement.

At this point the seal line disappears at one end and a new seal line is created from the other end, which in turn pushes the media from one end to the other. The single-screw oil-gas mixing pump uses a rubber-like stator with good elasticity, and it needs a certain amount of interference to mesh with the rotor, so that it produces a reliable seal.

When the pump is working, the sealing line can effectively block the passage of gas to achieve the purpose of conveying gas; when the medium contains solid particles, if the solid particles are squeezed in the sealing line, the surface of the stator rubber is compressed due to the elasticity of the rubber stator, solid When the particles pass over the sealing line, the stator rubber rebounds to restore the original shape, so that the single screw pump can achieve the purpose of containing a small amount of solid particles in the conveying medium.

Generally, the nature and state of the medium transported by the single screw pump are relatively complicated, and may cause blockage in the pipeline. Since the single-screw pump is a positive displacement type pump, when a blockage or human error occurs, the pump may overpressure and easily damage its components.

In order to prevent damage to the pump, a safety valve must be installed between the discharge pipe of the pump and the suction pipe. It is also possible to install a pressure relay in the outlet line and automatically stop the pump when the pump exceeds the rated pressure.

In the actual design of the single-screw pump oil and gas mixed transmission process, according to the specific conditions of the oil zone, comprehensive analysis of oil and gas mixed volume, oil and gas production, oil and gas ratio, oil recovery, transportation distance and other factors, many aspects of investigation and research, more The comparative analysis of the scheme, the selection of a suitable mixed pump type, and the development of a reasonable process layout, in order to achieve safe, scientific, reliable and economic operation of oil and gas mixed transmission.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn

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