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Sand Jet Systems

In addition to dissolved components and dispersed hydrocarbons, produced water often contains a mixture of solids. These originate primarily from the reservoir rock but may include sand, clay, mineral scale and, possibly, proppant.

The bulk of the produced solids will accumulate in the primary gravity oil-gas separator vessel, from which they must be removed periodically to avoid reduction of the separator residence time, and reduced separation efficiency. Eventually, the solids can accumulate to considerable depths, and increased carry-over into the downstream processes will be observed. This problem is also associated with slug catchers and free water knock-out drums.

Advantages of Sand Jet systems:

  • Online operation
  • Cost effective
  • Low water requirement.

Application of Sand Jet systems:

  • Mainly horizontal separators (vertical separators also possible).

Case Studies

Gullfaks B (Norway)

The main Gullfaks field lies in block 34/10 in the northern part of the Norwegian North Sea and contains three large concrete production platforms (Gulfaks A, B and C); with production starting on B on 29 February 1988.

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