Key points for selecting a multiphase pump are as follows:
## Medium Property Adaptation
Clarify the gas‑liquid ratio, sand content, viscosity and corrosiveness of the medium. For media with a high gas‑liquid ratio, screw‑axial flow or screw‑type multiphase pumps are preferred. For sandy media, wear‑resistant materials for wetted parts (such as duplex stainless steel) shall be selected.
## Operating Parameter Matching
Accurately calculate the rated flow, head, inlet and outlet pressure and temperature to ensure the pump operates in the high‑efficiency zone, avoiding risks of cavitation and overload. Ensure the NPSH (Net Positive Suction Head) meets on‑site installation requirements.
## Structure and Installation Requirements
For installation onshore or on offshore platforms, the explosion‑proof and seismic grades shall be considered. For space‑limited scenarios, a compact structure is preferred. Meanwhile, confirm that the shaft seal type (mechanical seal / packing seal) meets the sealing requirements of the working conditions.
## Reliability and Maintainability
Prioritize models that are easy to disassemble and have universal spare parts. Pay attention to bearing service life and lubrication system design. For high‑demand working conditions, online monitoring can be configured to reduce operation and maintenance costs.
## Compliance and Cost Control
Comply with industry standards (such as API 610). Integrate procurement, energy consumption and maintenance costs to avoid resource waste caused by blind pursuit of high parameters.
The above points shall be comprehensively considered to ensure long‑term stable operation of the multiphase pump.
