Multiphase Production Systems Overview
Multiphase Pumping for Better Economics in Oil and Gas Production
Conventional methods for producing oil and gas are successfully replaced by a simpler, more economic technology known as multiphase pumping. Multiphase pumping does not require separation of oil, gas, or water, so production from the field can be gathered and transported to a central processing area without requiring separate flow lines, separators, heater-treaters, tanks, flares, stock pumps and compressor:
Multiphase pumps can handle low inlet pressures, which make them ideal for lowering the flowing backpressure of the well. With many wells, particularly those on artificial lift, substantial gains and accelerated production can be achieved with even a modest drop in back pressure – enough to in many cases justify the investment within a few months.”
- Facility reduction: Moving the well flow to central processing, eliminating facilities. Reduce CAPEX & OPEX.
- Draw down/Boosting: Production acceleration. Debottlenecking. Increased ultimate recovery.
- Environmental impact: Eliminating flaring and venting of gas. Reducing carbon emissions. Small foot print compared to conventional.
- Flow Assurance: Mitigate Hydrate formation. Deal with Heavy Oil, Emulsions and Wax issues.
- Annulus/Wet gas: Increased well inflow by reducing annulus gas pressure. Flowing water logged gas wells.
- Subsea application: Boosting from the sea floor. Produce deep water wells.
Leistritz Multiphase Pumps are built for use offshore, onshore or in subsea installations and are available in both a high pressure and a low-pressure design. They are ideal for a broad range of oil viscosity and emulsions and work very well with high GOR. The pumps are made to cope with slug flow with no impact on operations, High GVF (Gas Void Fraction) as well as wet gas are handled with recirculation of liquids. The compression heat is removed with the liquid and no process coolers are required.
WHY SCREW PUMPS WORK BEST FOR MPP APPLICATIONS
Twin screw pumps are ideal for multiphase production because they are positive displacement machines working independently of density and inlet pressure as well as backpressure and changes in GFV (Gas Void Fraction). During the life of the field multiphase flow can be easily controlled by controlling the speed of the pumps. The pumps are built to handle 100 % GVF eliminating the need for slug catchers or inlet scrubbers.
LEISTRITZ MPP FEATURES
- Twin-rotor, double-flow screw pump with integral rotor and shaft made from one piece of material.
- Designed to operate with 100% GVF.
- Short bearing span and very stiff rotors for minimum rotor deflection and preventing seal misalignment.
- Hardened rotors and rotor bores for maximum wear resistance.
- Mechanical seals either single or double with seal flush system per API Plan 11, 32 or 54.
- Double helical timing gear for minimum torsional deflection.
- Carbon steel or stainless-steel construction.
- Prime mover can be electric motor, or gas engine with belt or direct drive.
- Available fully packaged using standard packages or fully customized systems for on-shore, off-shore or sub-sea installations.