ServicENERGAS has performed a comprehensive maintenance of compressor units which operate as a part of the FGTF of East-Messoyakha GTPP

30 May 2018

The FGTF of the company ENERGAS is intended to treat associated petroleum gas as a fuel for the gas turbine power plant of East-Messoyakha field. Fuel gas treatment facility provides the set design parameters of APG on purity, temperature, pressure, and flow rate.

To compress gas FGTF includes four booster compressor units. These CUs compress the low-pressure (0.2...0.45 MPa) APG to 2.95...3.05 MPa. The capacity of each unit is 9,000 m3 / h.

For gas purification high-efficiency filters-scrubbers are designed, which are located at the inlet to the CU and perform 2-step removal of liquid fractions and solid particles. The efficiency of the filter elements is 100% for contaminations larger than 20 microns and 97% for particles 5...20 microns in size.

At the discharge line of the CU there is built gas coolers so as to cool gas below the dew-point in order to separate condensate formed. Then the gas flows to the heaters, which maintain the design temperature of the fuel feeding to the turbines.

Each compressor unit is equipped with a two-level system of capacity control and automated control system. FGTF is additionally equipped with dew-point measurement system.

According to the project, the all process equipment is placed inside a separate capital building.

Since FGTF commissioning, the operating time of compressor units has ranged from 4,000 to 8,000 hours. Currently there is completed their comprehensive maintenance. Scheduled tasks were carried out by specialists of the ServicENERGAS LLC (companies group ENERGAS).

In the course of maintenance the following works there were performed:
  • Replacement of consumables (gas and oil filters, oil in the bearings of the motors);
  • Check the alignment of rotating units (compressors and motors);
  • Gaps measure and checking the status of the internal components of the compressors;
  • Adjustment and calibration of position sensors and positioning of valves and hydraulic controllers;
  • Functional tests of the oil system and cooling system of the compressor units;
  • Verification of operational parameters of the BCS and their adjustment;
  • Troubleshooting; issuing recommendations on components replacement.

Maintenance results are confirmed in the technical report of performed maintenance service.

REFERENCE. East-Messoyakha GTPP, the northernmost continental gas turbine power plant in Russia, has been operating in the Yamal-Nenets Autonomous Area since September 2016. Its operator is JSC Messoyakhaneftegaz, a joint venture of Gazprom Neft and Rosneft.

GTPP with capacity 84 MW supplies electricity and heat to the production and infrastructure facilities of the field. The basis of the power plant is six gas turbine units of type Titan 130 manufactured by Solar Turbines Inc. with a unit capacity of 14 MW.

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