Off Shore
Similar to the production activities on-shore, the crude production activities OFF-SHORE require the use of water for the recovery of crude. The crude and water must then be separated to recover the crude and to be able to re-use the water or to dispose of the water. Also like on-shore production, the proper separation and treatment of this produced water is important for several reasons, including maximizing the recovery yield and protecting the production equipment and the environment.
In addition, it may be necessary to remove sulphates from sea water used for injection purposes. Crude naturally contains barium and strontium which react with sulphates to produce insoluble salts that can plug the reservoir and pipes, thus reducing production yield. Likewise, it may be necessary to reduce the salt content of the sea water prior to use on a production platform.