METHOD AND DEVICE FOR MEASURING PHASE FLOWS OF GAS-LIQUID FLOW IN PIPELINE WITH FOLLOWING MEASUREMENT OF FLOWS OF LIQUID PHASE COMPONENTS

摘要

FIELD: oil and gas extractive industry, possible use for measuring flow of gas, condensate and its components, and water.;SUBSTANCE: in accordance to the invention, by means of slit intake in form of a cross, mounted to face the flow, representative sample is extracted. Extracted sample is received in measuring section, connected to ejector, which creates negative pressure to compensate for hydraulic losses of intake and measuring section. Isokinetic extraction of sample is set up by valve, made with possible management of hydraulic resistance of measuring section. Extracted sample by means of separators is divided onto liquid and gaseous phases. Flow of extracted liquid phase is measured by means of strain-gauging weights, and flow of extracted gas phase - by means of measuring washer. After sedimentation of liquid phase, volumes, occupied by its components, are measured by means of transparent calibrated pipe connected to measuring vessel or by means of capacity sensors. On basis of phase flows in the sample with known area of intake entrance and area of pipeline cross-section, flows of these phases in the pipeline are determined.;EFFECT: ensured increase of precision when measuring flows of all phases in gas-liquid flow both in manual and automatic modes, without disruption of technological process.;2 cl, 1 dwg