DIAGNOSTICS OF THE OPTIMAL OPERATING MODES OF GAS TURBINE COMPRESSOR STATIONS BASED ON THE ANALYSIS OF TECHNOLOGICAL PROCESSES

The article is dedicated to the analysis of influence seasonally changing ambient temperature on technological parameters compression process at a gas turbine compressor station for transportation natural and associated collected from oil fields by an offshore subsea pipeline. As result analysis, indicators suction discharge pressure, capacity, during summer winter months were each stage multi-unit two-stage station. divided into intervals, number measurements in interval was determined, graphs dependence average value built. graphs, complex performance compressors evaluated. To compare results study effect operating mode efficiency station, numerical criterion as ratio maximum corresponding parameter calculated. For both 1st- 2nd-stage compressors, this productivity found be almost twice low compared summer. reason, there need develop measures that can ensure operation optimal mode. it 1st due increase inlet which positive factor compressor, 16.4% (from 58 psi 67.5 psi) winter, outlet negative factor, 0.9% 285 288 36o F 42o 80.5o F), decreased 15.2% 40.15 MMSCFD 34.05 MMSCFD) to). In no change summer, (273 cases), decrease 0.2% 807.5 805.5 psi. ) 10.1% 49.05 44.05 MMSCFD). Thus, season temperature, while remaining 5.1% organization processes. Taking account field, selection correct system allows prevent loss large amounts gas. design features units, concluded 2nd background constant no-change pressures automatic RPM turbines nominal 15000 cycles/min thus power overload Considering fact consumes 30,000 m3 fuel per day, 360,000 day taken these are overloaded, considered another source. By feeding all possible reduce load interstage collector direct compressed whole operation, additional 200,000-250,000 transported through This technique recommended multivariate various study, scheme proposed increasing 3-4% source extraction. Keywords: turbine, productivity, gas, statistical method.