Jiangsu Haifa Machinery Manufacturing Co., Ltd.

Oil-gas multiphase pumps have been a hot topic in international research in recent years, with keywords mainly focusing on multiphase pump, twin screw pump, helico-axial multiphase pump, gas-liquid flow, and sand-laden flow. customers, upon seeing the term "oil-gas multiphase transport," directly ask us: Is a screw pump the only option? Does an API610 centrifugal pump have a chance? My answer is usually straightforward: For genuine wellhead unseparated oil-gas-water multiphase transport with high gas content, large fluctuations in gas-liquid ratio, and even slug flow, a screw pump or specialized multiphase pump is more suitable. If gas-liquid separation has already occurred, or if the gas phase content is low and stable, with the transported medium primarily being liquid crude oil, condensate, oil products, or light hydrocarbons, then API610 centrifugal pumps remain a mature choice. The advantage of screw pumps in positive displacement transport. For high-viscosity oil, gas-cut crude oil, low-pressure wellhead multiphase transport, and oil-gas-water mixtures, screw pumps can maintain relatively stable discharge capacity within a certain range Twin-screw multiphase pumps, in particular, have practical value in applications such as oilfield surface gathering, remote well sites, and offshore platforms. However, screw pumps are not the standard answer for all oil-gas operating conditions. For high flow rates, stable liquid phases, long-term continuous operation, and conditions requiring high efficiency and maintenance, centrifugal pumps are usually more economical. Examples include crude oil export pumps, product oil transport pumps, condensate pumps, LPG pumps, lean amine pumps, rich amine pumps, bottom pumps, and pipeline booster pumps. If these conditions are already stable, there is no need to treat everything with a multiphase pump approach. Jiangsu Haifa's API610-OH1/OH2 HES series chemical process pumps have a flow range of 2 to 2600 m³/h, a head of up to 300 m, an applicable temperature range of -80 to 450°C, and a design pressure of 2.5 to 26 MPa. They are suitable for refineries, petrochemicals, coal chemicals, low-temperature engineering, and offshore industries. For stable liquid phase processes in oil and gas units, these OH2 pumps are a common choice. heavy-duty crude oil transport, high-temperature bottom pumps, natural gas processing units, coal chemicals, or continuous operation conditions, we consider the API-BB2 HFDD series. The BB2 has a flow range of 50 to 4000 m³/h, a head of up to 650 m, an applicable temperature range of -80 to 450°C, and a design pressure of 5.0 to 15.0 MPa. With its between-bearing, centerline-supported design, it is more for demanding petrochemical processes. For high-flow crude oil, product oil, pipeline pressurization, seawater desalination, and natural gas transport, BB1 double-suction pumps also value. The BB1 has a flow range of 100 to 11000 m³/h, a head of up to440 m, an applicable temperature range of -40 to 160°C, and a design pressure of 2.5 to 5.0 MPa. Under high-flow conditions, pumps often offer better efficiency and maintenance convenience than screw pumps. For-pressure pipeline transport, oilfield water injection, or high-head process transport, multistage pumps like BB3 and BB4 can be. The BB3 has a head of up to 3000 to 3200 m and a maximum design pressure of 35 MPa; the BB4 has a head of up to 1000 m and a design pressure of up to 15 MPa. For high-pressure liquid transport in the downstream oil and gas system, these API610 multistage pumps are a better match than multiphase pumps. So, I believe the question of "screw pump or centrifugal pump for oil-gas multiphase transport" cannot be answered by looking at the medium name alone. Factors to consider include gas volume fraction, slug flow conditions, viscosity, inlet pressure, NPSHa, sand content, whether separation has occurred, operating mode, and unit requirements. For true multiphase transport, screw pumps have the advantage; for stable liquid phase processes, API610 centrifugal pumps are more suitable. When developing solutions for customers, we recommend clearly defining the process: from wellhead to gathering station, it might be a multiphase pump or screw pump; after the separator to the processing unit, it might be an API610 centrifugal pump; for high-pressure export or water injection, it might be a BB3, BB4, or other high-pressure multistage pump. This configuration addresses the multiphase transport issue while ensuring the efficiency and reliability of downstream units. There is no absolute good or bad pump type, only operating condition boundaries. Using screw pumps where they excel—in high-gas multiphase transport—and API610 chemical process pumps where they excel—in stable liquid phase processes—is the more reliable technical approach for oil gas projects. Oil-gas multiphase pump, multiphase pump, twin screw pump, API610 centrifugal pump, crude oil export pump, condensate pump, LPG pump, well booster pump, BB2 process pump,3 multistage pump, multiphase pump, twin screw pump, oil gas pump, API 610 centrifugal pump, crude oil transfer pump