Fluids are raised from the reservoir to the surface using progressive cavity pumps (PCPs), a form of artificial lift device that uses a spinning helical rotor inside a fixed stator. Because PCPs can handle high viscosity, solids, and gas-content fluids with low power consumption and little maintenance, they are frequently utilized in the oil and gas production industry.
A progressive cavity pump's (PCP) optimal performance is
achieved by a combination of good design, operating, and maintenance
procedures. Positive displacement pumps, or PCPs, are widely employed in a
variety of sectors to pump viscous fluids. Here are some pointers to improve a
PCP's performance:
Choose the
Appropriate Pump
The first step in optimizing a PCP's effectiveness is to
choose the appropriate transfer pump
for your well's conditions and production goals. It is necessary to match the
pump capacity, head, torque, speed, and elastomer type with the fluid
characteristics, flow rate, depth, temperature, pressure, and gas-liquid ratio
of your well. To assist you in choosing the best pump for your well, software
tools, pump curves, and vendor recommendations are available.
Make Sure the
Pump is Installed Appropriately
The proper installation of the pump in the well is the
second step toward optimizing a PCP's performance. The pump must be positioned
about the tubing, the stator must be fastened and centralized, the rotor must
be oiled and shielded from corrosion, and the pump intake must be above any
holes or sand screens. To reduce rod wear and failures, you should also use
appropriate rod guides, centralizers, and couplings and refrain from bending,
stretching, or twisting the rod string excessively.
Operate the
Pump Effectively
Operating the pump effectively by the wells and the
pump's characteristics is the third step in optimizing a PCP's performance. To
attain the intended flow rate and pressure, you must modify the pump's power,
torque, and speed to prevent over or under-pumping the well.
To maximize the pump's production and minimize its energy usage, you must
also keep an eye on the pump performance indicators, which include fluid level,
drawdown, pump fillage, net positive suction head, and pump efficiency.
Control the Gas
Interference
Controlling gas interference, which can lower pump
efficiency and result in mechanical issues, is the fourth phase in PCP
performance optimization. Before the gas enters the pump, you must determine
the source and volume of gas in your well and utilize the proper techniques to
dissolve, vent, or separate the gas. To reduce gas interference and enhance
pump performance, you can employ gas separators, gas anchors, gas vents, gas
slugs, or gas bypass devices.
Handle the
Abrasives and Solids
Handling particles and abrasives that can harm pump parts
and shorten pump life is the fifth stage to maximize a PCP's performance.
Before the solids and abrasives in your well reach the pump, you must measure
their size, shape, concentration, and hardness. You must then employ the
appropriate techniques to filter, settle, or dilute them. To help you manage
the solids and abrasives and prolong the life of the pump, you can use sand
screens, gravel packs, filters, or chemical treatments.
Regularly
Maintain the Pump
Preventing breakdowns and downtime by performing routine
maintenance on the pump is the last and sixth step toward optimizing the
operation of a PCP. In addition to following the manufacturer's instructions
and recommended procedures for pump maintenance, you must examine, clean, and
replace the pump's components as needed. To evaluate the condition and
performance of the pump, you need also to do periodic testing, such as
vibration analysis, fluid analysis, and pressure tests. You may extend the
pump's lifespan and reduce the need for expensive repairs by performing routine
maintenance on it.
Conclusion
Using these techniques, you may eventually increase a
Progressive Cavity Pump's efficiency and lower maintenance costs by improving
its performance and dependability.
Risansi offers a range of progressing cavity pumps for
demanding positive displacement process applications. Our pumps provide a
near-constant flow rate and suction lift capability for handling wastewater
sludge, slurries, viscous and shear-thinning non-Newtonian fluids.
Check the website for more details.
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