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Separator Jetting – Flowsheet Design (B-FSM-131)

Equipment Layout

  • Cyclonic jet clusters (linear or square) in production vessel – one cluster in operation at a time (batch)
  • Pre-fill/Post-flush line with spray and slurry headers
  • Desander sized for single cluster flow to remove sand and return liquids to process
  • Accumulator volume for multiple cluster collection – batch discharge by LS or time
  • Filter-bag/bin for final dewatering and transport

Process Operation

  • Pre-fill slurry header and desander/accumulator to nominal operating velocity
  • Open slurry header and set flow rate (DPC) then spray header (FC), close pre-fill during operation
  • Discharge duration based on time or slurry density
  • Close slurry discharge
  • Post-flush to sweep solids from piping
  • Accumulator solids batch discharge into filter bag/bin
  • Entire system should be automated

General Design Factors

  • Slurry discharge from jetting must be transported to specific target location that does not impede flow from jetting operation
  • Includes piping, fitting, instrument, valve, or unit processes
  • Slurry dewatering system can be designed to return process liquids back to separator vessel (closed loop)
  • Include removal/transport/replacement of solids bin/bag in process operation
  • Always pre-fill and post-flush piping that is used to transport slurry
  • Automate entire system to ensure robust operation

Next week I will finish the discussion on jetting systems with key items and technical paper references.

References:

  1. Rawlins, C.H., “Design of a Cyclonic Solids Jetting Device and Slurry Transport System for Production Systems”, paper 166118, presented at the SPE Annual Technical Conference and Exhibition, New Orleans, LA, 30 September – 2 October, 2013. https://doi.org/10.2118/166118-MS
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