The associated gas compressor station has been reliably operating at West-Chigorinskaya GTPP for 15 years
26 October 2022
The gas turbine power plant of the West-Chigorinskoye field of PJSC Surgutneftegas was put into operation in October 2007. The installed electric capacity of the GTPP is 12 MW.
Generation is carried out here by two GTA-6RM gas turbine units with a unit capacity of 6 MW, manufactured by the NPO Saturn (now PJSC UEC-Saturn). The basis of the GTA-6RM is the GTD-6RM turbine with TK-6 generator.
GТD-6RМ – the two-shaft gas turbines, specially designed for low-to-medium capacity power plants. They were created based on upgraded aircraft engines of the D30KU/KP family, the most popular and most reliable engines for passenger and transport aircraft in Soviet and Russian aviation history. GTD-6RM drives are manufactured by the UEC-Saturn engine-building company.
The power plant operates in a simple cycle (without heat recovery) and uses associated petroleum gas as a fuel. Thus, the provision of production and infrastructure facilities with their own energy resources is combined with the rational utilization of APG and improvement of ecological situation at the field.
A significant contribution to the reliability and efficiency of GTPP-12 operation is made by the booster compressor station for associated gas. For 15 years, this BCS has been supplying turbines with fuel with specified parameters in terms of purity, temperature, pressure and flow rate.
BCS of the hangar type consists of three compressor units (CUs) which housed in separate building. The units, supplied and commissioned by ENERGAS Company, are made based on screw oil-filled compressors. The volume capacity of each CU amounts to 4,800 m3 / h; gas flow is controlled by a special two-level regulation system.
Process equipment provides a high compression ratio: the APG inlet pressure is 0.3 MPa, the design outlet pressure is 2.7 MPa. The purification of gas entering the compressors (two-step removal of liquid fractions and solid particles) is carried out by highly efficient coalescing filters-scrubbers with automatic drainage system.
The delivery line of each CU is equipped with a heat exchanger (with a built-in separator and a condensate collector), which cools the compressed APG, removes the resulting condensate and maintains the calculated temperature of the gas fuel set by the turbines manufacturer and design requirements.
BCS is fully automated. Local control systems of compressor units are tied by a group regulation algorithm and integrated with the upper level of the facility's APCS. The joint ACS provides remote control of equipment, automatic protections and alarm; monitors the process parameters and gas pollution in the machine room of the BCS; handles the parameters of the workflows and emergency events; issues information to the operator panel.
Operation mode of gas booster units as part of the power plant is continuous, with scheduled shutdowns for maintenance.
REFERENCE:
The West-Chigorinskoye oil field, located in the Surgut region of the Khanty-Mansi Autonomous Area, was put into operation in 2003. The construction of GTPP-12 was carried out here as part of the energy project of PJSC Surgutneftegas to create its own generating capacities.
The development of field is carried out by Nizhnesortymskneft OGPD, the northernmost Oil and Gas Production Department of company. The peculiarities of the enterprise include oil production in difficult, unique conditions of the marshland. Today OGPD develops about a third of all Surgutneftegas fields. The main part of the reserves is low-permeability oil deposits.
| Previous news | Back to the list | Next news |