NGL PRO

​Aspen Engineering Services offers a cost-effective solution for flare gas capture, gas conditioning and NGL recovery. The NGL Pro process integrates dehydration, compression, cooling and conditioning, eliminating the need for costly glycol and refrigeration systems. Hydrate formation is precluded by a heat integration system. Consequently, no antifreeze additives are required.

NGL Pro is a field-proven and commercially available. All units are supplied with telemetry for remote monitoring from a computer or phone. 

​Sites that can consume the residue gas for power will eliminate flaring completely.
NGL Pro is a patented process. 
​                           NGL Pro Process Description
The NGL Pro system will consist of two portable skids that are transported over the highway on flatbed trucks. One skid contains a standard reciprocal compressor package. The other skid contains the proprietary NGL Pro process. The prefabricated equipment will be set near the wellhead and field connected. The NGL Pro process is comprised of the following steps:
  1. Rich natural gas is compressed in a three stage reciprocal compressor. Inter-stage liquid condensation is avoided by controlling the temperature of the inter-stage air coolers.
  2. The compressed gas is cooled sequentially in the NGL heater and the residue gas heater. The pre-cooling of the compressed gas also provides enough heat to the NGL and residue gas to prevent hydrate formation during decompression.
  3. The cooled, compressed gas is returned to the compressor skid and further cooled in the compressor aftercooler.
  4. The gas/NGL/water mixture is returned to the NGL Pro skid where it is cooled a fourth time in a heat exchanger that is cooled by expanded residue gas from the separator.
  5. The three-phase mixture from the fourth heat exchanger enters the separator where NGL, water and residue gas are separated.
  6. NGL from the three-phase separator is heated, then depressurized and sent to a two-phase separator.
  7. Gas from the two-phase separator is recycled to the reciprocal compressor.
  8. NGL from the two-phase separator is sent to a propane bullet tank for storage.