The module
Onshore drilling operations frequently encounter problems with polluted fuel to power both the rig and accomodation camps. Water and sediment are often present in unacceptable quantities and create operational problems such as frequently clogged fuel filters and high temperature corrosion problems on engine injectors.  To ensure smooth and trouble free engine operation the fuel must be properly cleaned before being fed to the engines. Disc stack centrifuge systems are the only systems on the market today that can handle a wide range of fuels and input characteristics. Large quantities of both water and sediment are efficiently removed. G-force makes two standard units (1000 ltr/hr or 2000 ltr/hr) for use on onshore rigs, the units are executed in Eexd (Class 1 Div. 1 0) so they can be placed any where on the rig even within the hazardous zone and operate with either diesel oil or crude oil. The units are completely self-contained and are delivered as a plug in module.

Principle of operation
Below a cross section of the rotating bowl explains the flow of the fuel through the separator bowl. Fuel is pumped into the bowl with a build on feed pump, through the feed pipe into the distributor, where the oil is distributed into the disc stack so that the solids and water are separated from the oil. Sediment is collected on the  bowl wall and water leaves the separator by gravity and flows into the separated water tank from where it is automatically pumped out each time the high level indicator is triggered. Oil is pumped out by a built in pump to the clients fuel day tank. Periodically the bowl needs to be opened so that the sediment can be removed. Removing sediments takes less than 30 minutes.

Serviceability
The module is constructed to withstand rough handling that occurs when moving the rig equipment from one location to the next. Once on the next location the unit can be hooked up in a matter of minutes so that when the rig or camp generators are started the fuel can be cleaned. A tools and spares cabinet is part of the module so that requirements for service is always at hand.
 
Dimensions and utilities
The module is 185 cm long x 100 cm wide x 190 cm high and a weight of 650 kg. Utilities required for operation are electrical power 4 kW, potable water and instrument air. Please specify voltage and CPS when ordering.

References
A reference list has been included in the PDF download.