XPLORE
Pump Calculation Module
The Xodus Pump Calculation Module utilises operational
data, custom calculations, industry standard calculations
and advanced simulation technology to provide a state
of the art monitoring system analysing all aspects
of pump operation and maintenance.
Each system is custom designed utilising the required
functionality from the following list:
› Online real-time visualisation
› Viscosity reconciliation of pumps curves
› Fixed or variable speed drives
› Single or multiphase
› Thermodynamic calculations
› Mechanical degradation monitoring
› Real time/ historical, predictive and ‘what if’ operating
modes.
Online Real-Time Visualisation
The Pump Calculation Module gives the user the ability
to view a large amount of system data and complex
calculated information in real-time. Such information
is normally
only available following offline studies. Typical
plots available to the user are Operating Point
-v- Design
Curves for Operating head - total dynamic head
(TDH) of pump –v- Operating flow NPSHA - net positive
suction head available –v- Flow, Efficiency & Power
-v- Flow, System Curve –v- Flow. Head can be
viewed as Head, DeltaP, Ratio or Discharge Pressure.
Flow can be viewed as Actual or Standard Flow.
Click image to enlarge.
Viscosity Reconciliation of Pumps Curves
Viscosity can be obtained online if available, otherwise
it can be manually entered periodically reconciliation
performed over time.
Fixed or Variable Speed Drives
The module has the ability to handle fixed or variable
speed drives including all available speed, efficiency
and power curve data.
Single or Multiphase
Both single and multiphase pumping systems can be
monitored. The advent of high power multiphase
pumps is changing
the world of oil production. They have particular
potential by allowing the exploitation of fields
nearing the
end of their useful lives.
Thermodynamic Calculations
All such complex calculations are performed online
in real-time, are available through the user
interface and can be trended. For pump monitoring
we utilise
industry standard calculations. In certain instances,
e.g. multiphase pumping, a more appropriate solution
might be to use Multiflash which gives us access
to a vast number of thermodynamic methods allowing
us
to analyse each system and select the most appropriate
method.
Mechanical Degradation Monitoring
With the help of the performance monitoring system
the performance degradation and fouling of
the pump unit can be evaluated and monitored. It
is essential
to detect degradation before corrective action
can be started. Real time condition monitoring
is an
important part of modern and efficient management
of industrial
flow machines. Pump performance is calculated
by monitoring certain parameters of the pump,
e.g.
efficiency or
power of the pump. In order to reliably monitor
performance, condition monitoring system has
to produce a reference
value against which the real operating value
can be compared. Usually the reference value
is selected
so
that it represents the reference value of a
new
pump.
Real time / Historical, Predictive and ‘What
If’ Modes
The system can operate in any one of three
modes. Real time operation shows the current
status
of the pump(s).
All of the measured and calculated data is
saved to a historical database therefore the
user can
go back
in time and review historical operation.
The system can include the ability to run in
predictive mode so that in addition to real-time
information
the user also has information regarding the
operation of
the pump(s) in the near future. Depending on
the complexity of the model we can predict
up to 36
hours into the
future.
In ‘what if’ mode the user can freeze the
system and change any of the input parameters, for
example the liquid viscosity, and review what happens
to the pump operation. In this mode the real time data
is stored in the background and refreshed when real
time mode is reselected.
Click image to enlarge.
A typical architecture for a pump monitoring system
includes the standard XPLORE framework linking to the
customer’s data historian. The pump module along
with custom calculations and information from the Multiflash
package supply the user via a web server with real-time
and historical (and if required predictive and ‘what
if’) information regarding the operation of their
pump(s).
For more information contact:
Steve Hamilton, Director – Technology Division
Tel: +44 (0)1224 628307 Email:
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