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