Because field development with multiphase pumps is highly profitable. Multiphase pumps reduce the well pressure in the producing zone (FBHP) in the well and thus increase the productivity of the well. By installing a multiphase pump, the respective well is decoupled from the system pressure of the subsequent separator station. Multiphase pumps are installed above ground and are easy to install, operate and maintain. They can also be easily combined with other technologies later on, i.e. borehole pumps can be used, for example.

The main reason for the increased profitability is that German Legacy multiphase pumps significantly improve the productivity of the connected well(s). This is achieved on the one hand by lowering the head pressure and on the other hand by the very high availability of up to 98% and more. This corresponds to approx. 360 days per year on which our multiphase pumps ensure pumping at maximum level and thus productivity.

Our multiphase pumps operate in a very wide working range and can therefore be operated over very long running times and also largely manage without personnel during operation. Furthermore, we also offer leasing models in which the pumps are comprehensively looked after.

The result: maximum output with minimum operating costs, for 20 years and more.

The use of multiphase pumps is worthwhile from the point at which a well begins to decline in productivity, i.e. at the end of plateau production. As soon as the level of plateau production is determined, planning for the use of multiphase pumps should begin.

Multiphase pumps are used as close as possible to boreholes because their purpose is to relieve the respective borehole(s) from the system pressure and to achieve atmospheric conditions at the head of the borehole as far as possible. This results in a significant reduction in well pressure, which leads to increased production from the reservoir.

The multiphase pump typically generates a differential pressure of Δp = 20…30 bar (which corresponds to 300…450 psi) by which the pressure at the perforation is reduced. Due to the productivity index PI of the reservoir, e.g. 2bbl/psi, the productivity of the well increases according to the factor of differential pressure and PI, for example, by 600…900 BOPD.

Multiphase boosting provides increased production by lowering the drill head pressure. In addition, the connected sources are decoupled from the downstream system pressure. This means that individual production can also take place from each borehole. In the process, further measures for increasing the productivity of the respective borehole are individually coordinated.

Multiphase boosting is the first sensible measure for almost every borehole before further artificial lifting measures are used. Multiphase boosting is most effective when its use is considered in the initial planning phase (“Front End Engineering and Design”, FEED). This optimises the flowlines and the profitability of a drilling site over its entire life cycle. Multiphase pumps are then used at the latest towards the end of the plateau production of the respective well.

In order to be able to optimally design multiphase pumps, GERMAN LEGACY requires information on the current operating and environmental conditions, such as flow rates and pressures, as well as the future data of the respective well. When producing complete fields, also the arrangement of the wells and the current or planned flowlines.

GERMAN LEGACY multiphase pumps can be used in a wide variety of locations within an oilfield, depending on the specific application. Applications in parallel operation and/or in series are also possible. This engineering is an essential part of the Multiphase Aided Field Development.

Many systems, even those of well-known pump manufacturers, are no longer in operation because they have not been adequately maintained or have not been operated optimally. Multiphase systems have an extremely wide operating range. However, since multiphase pumps are not yet generally used in all oil fields, operators often lack appropriately trained personnel. In addition, poorly designed systems or systems in the wrong places lead to problems that need to be solved.

GERMAN LEGACY therefore offers all customers an operator model in which the customer’s operators are also trained “on the job”, on the installations.

Many multiphase pumps are installed in the wrong places in the field or are designed on the basis of non-optimal data. Therefore, too large pumps with poor efficiencies are often selected. GERMAN LEGACY’s holistic service enables us to achieve pump installations that often require only 50% of the investment and just as little installed power. On the one hand, the better efficiencies significantly reduce OPEX. In addition, we can generally lower the head pressures to 50 psi or less for higher or longer delivery.

Multiphase pumps should be installed as close to the borehole as possible to ensure optimum head pressure drawdown. Even slightly longer flowlines can result in a considerable deterioration of the mode of action.

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