Hatenboer-Water BV secures Daewoo Shipbuilding & Marine Engineering (DSME) contract  for supply of Demitec® watermakers to four new drillships

Demitec® is the trade name of Hatenboer-Water RO type watermakers. These are heavy duty installations specially designed for 24/7 operation in maritime and offshore applications.

These drillships, currently under construction, will be able to drill to a water depth of 12,000 ft (3 km) and are on order from DSME by Vantage Energy, Atwood Oceanics and two for Aker Solutions.

The watermakers work on the principle of reverse osmosis (RO) and have a capacity of 50 m3 per day. Drilling at great depths demands an extremely high quality of product water.

The installations can supply water with a purity of only 10 ppm TDS. To obtain such a standard, the installation is in a two-stage configuration, with two RO installations in-line. The first unit desalinates to 500 ppm TDS and the second delivers product water with a salt content no higher than 10 ppm TDS.

In 2011, Hatenboer-Water installations were delivered for drillships for Transocean, Petroserv, Odebrecht and TMT, among others. Hatenboer-Water also received orders in 2011 from DSME for Heerema’s Aegir and the Pieter Schelte, which was built for Allseas.