Sudan produces around 500,000 barrels of crude oil every day, about 200,000 of which come from the fields in the Melut Basin in the south of the country. Before it can be used or exported, the mixture of oil, water, gas and sand which has been pumped out of the desert soil must however first be transported from the remote sources over large distances to the processing site. Multiphase pumps made by NETZSCH Pumpen & Systeme GmbH from Waldkraiburg in Germany are being used to do this. These progressing cavity pumps are specially designed for changes in the consistency of the medium and a high solid content, so that they provide reliable pumping performances over long periods of time, without any failures or high levels of wear. Since temperatures of up to 50°C are reached in the Melut Basin and sandstorms and downpours alternate through the year, the pumps used there are exposed to an extraordinary strain, which must be catered for when the pumps are designed.