Posts Tagged ‘offshore’

Submersible borehole pumps for very high heads

Tuesday, November 20th, 2018 von admin

These new submersible borehole pumps developed by KSB have a diameter of up to 50 inches, i.e. 1250 mm, and a drive rating of up to 5 MW. These pumps will be capable of handling

  • flow rates of up to 5000 m³/h
  • at heads of up to 1500 m.

Compared with dry-installed pump sets, the advantage of submersible borehole pumps is -acc. to an information of the manufacturer- “the notably longer service life and the fact that pumps with wet motors are not compromised by flooding.” KSB is one of the few manufacturers worldwide to offer double-entry designs for particularly high load conditions alongside “normal” single-entry designs.

This double-entry design was originally used for drainage applications in mines. The heads required in these applications would have created very high axial thrusts in single-entry pump designs, placing extremely high loads on the bearings. The back-to-back impeller arrangement employed in double-entry designs not only reduces the axial thrust but also the associated bearing loads.

(more…)

Sulzer is optimizing pump reliability and performance

Thursday, September 20th, 2018 von admin

The offshore industry faces two main challenges: maximizing production within the limits of the reservoir, and minimizing operational costs while maintaining the safety of the platform. Pumps form one of the main groups of equipment that influence the outcome of both challenges and they require expert knowledge to ensure continued reliability and performance.

Murray Wilson, Sulzer UK argues that in each case, industry engineering expertise and commercial innovation are required to deliver these goals. Furthermore, the capital expenditure to improve reliability is most often far outweighed by the costs incurred by an unexpected failure and the subsequent costs of lost production. By taking a proactive approach and involving an expert maintenance provider, platform operators can deliver significant benefits to the business in the long term.

(more…)

Andritz: Start up of submersible motor pumps on North Sea drilling platforms

Monday, March 10th, 2014 von admin

andritzThe six submersible motor pumps supplied last year by Andritz to Jurong Shipyard, Singapore, were started up successfully on two drilling platforms in the North Sea. The pumps convey the industrial water for cooling the drilling equipment from a depth of 20 meters.  Installed in the supporting legs of the platforms, each of these four-pole submersible motor pumps conveys around 600 m³/h of industrial water.

(more…)