G single screw pump oil and gas multiphase transport and flow

Single- screw pump can transport gas-liquid-solid multiphase medium, and can deliver pure gas medium in a short time, to achieve multiphase mixed transport. In the design of mixed transmission system, fully analyze the characteristics of mixed transmission medium and single-screw mixed transmission pump to ensure the system is safe, reliable and scientific.
In oil exploration, oil wells are often accompanied by a certain amount of natural gas, water and solid particles. In order to reduce the well head back pressure, increase the crude oil output, improve the development benefit and achieve the objective of oil and gas confinement transportation, multi-phase mixed media such as oil and gas must be pressurized and transported with multiphase oil-gas pump.
Single screw pump work is the same outer surface of the rotor in the corresponding inner surface of the stator meshing to form a special contact line, so that the separation of the stator cavity, the contact line, said seal line. When the rotor rotates according to a certain track, its sealing line to do axial movement, but also to make the axial displacement of the stator cavity, that is, displacement displacement.
At this point the seal line disappears at one end and a new seal line at the other end, with the media pushing from one end to the other. Single-screw oil and gas pump due to the use of a good elastic rubber material of the stator, the rotor meshing with the need for a certain amount of interference, so that it produces a reliable seal.
When the pump is working, the sealing line can effectively prevent the gas from passing, so as to achieve the purpose of conveying the 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 elastic effect of the rubber stator, The particles cross the seal line and the stator rubber rebounds back to its original shape so that the single screw pump can achieve the purpose of containing a trace amount of solid particles in the transport medium.
General single-screw pump transport medium of nature, the state is more complex, may cause congestion in the pipeline. Because the single screw pump is a positive displacement pump, when the blockage or human error, it will cause the pump overpressure, it is easy to damage its components.
To prevent damage to the pump, a safety valve must be fitted between the discharge pipe of the pump and the suction pipe. Pressure outlet can also be installed in the pipeline relay, the pump exceeds the rated pressure automatically stop the pump.
In the actual design of single screw pump oil and gas mixing process, according to the specific circumstances of the oil region, a comprehensive analysis of oil and gas mixing capacity, oil and gas production, oil and gas ratio, oil recovery, transmission distance and many other factors, many investigations and studies Comparison of programs, select the appropriate hybrid pump type, to develop a reasonable process layout, in order to achieve safe, scientific, reliable and economical operation of oil and gas mixed transportation.

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