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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

Horizontal Separator Flow Assurance

The horizontal separator vessel is one of the most important parts of the separation train. CFD can be used to develop an improved understanding of the flow within this vessel and the way in which the flow interacts with the internals. The flow detail provided by CFD enables the position and spacing of the baffles to be optimised.

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