1 January 2018

Since July 2015, the vacuum compressor station, which was supplied by the company ENERGAS, has been reliably operating as a part of preliminary water removal unit No.4 (PWRU-4) at the Vakhskoye field of OJSC Tomskneft. This process equipment provides rational use of low-pressure APG at the facility in the maximum extent possible.



VCS of screw type compresses associated gas of the second separation stage from close to the vacuum pressure (0.001…0.01 MPa) to the gas pressure of the first separation stage (0.6 MPa) for joint injection into the pipeline to the gas compressor station (GCS) "Vakh".

Compressor station on the special requirements of the project operates at minimum capacity - 360 m3 / h. The capacity control system composed of two closed control loops. The first loop controls the spool position and regulates the capacity of compressor station in the range of 15...100%, which ensures high efficiency of its operation, even at partial loads. The second loop - control of bypass valves - controls capacity in the range 0...15%.

APG purification at gas inlet to the compressor is implemented by high-efficiency separator (two-stage filter-scrubber) which equipped with automatic condensate drainage system. There is provided possibility of quick replacement of filtering elements (cartridges).

Packaged VCS is placed in separate weatherproof shelter; is equipped with life support systems and safety systems as well as automated control system. Operation mode as a part of PWRU is continuous.



All the pre-start activities, including erection supervision, start-up and adjustment works as well as testing of equipment, was performed by the ServicENERGAS Company (ENERGAS Group).

The similar vacuum compressor stations operate on three more facilities of Tomskneft: PWRU-5 of Vakhskoye field, PWRU-3 and PWRU-9 of Sovietskoye field.

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