2 research outputs found
THE APPLICATION OF LASERS IN MEASUREMENT OF FLUID FLOW THROUGH DRILLING BIT NOZZLES
Get PDFPrikazane su dvije optičke metode za precizno mjerenje brzine protjecanja fluida: mjerenje brzine na temelju Dopplerovog efekta upotrebom lasera (LDV) i mjerenje brzine fotogramom čestica (PIV), uz postupke za digitalnu obradu signala i snimaka. Prikazana je primjena tih metoda u ispitivanju protjecanja kroz mlaznice dlijeta za bušenje. Uz kratki pregled uloge mlaznica u bušenju, navedeni su dosad primijenjivani postupci njihovog optimiranja. Prikazani su i uzorci rezultata mjerenja mlaznog protjecanja LDV i PIV metodom za mlaznicu kružnog presjeka. Ukratko je komentirana postava eksperimenta zajedno s tijekom ispitivanja. Uz potencijalna poboljšanja mjerene opreme, navedene su mogućnosti upotrebe LDV i PIV metoda u brojnim primjenama u naftnom inženjerstvu.Two optical methods based on laser and video technology and digital signal and image processing techniques - Laser Doppler velocimetry (LDV) and Particle image velocimetry (PIV) were applied in highly accurate fluid flow measurement. Their application in jet velocity measurement of flows through drilling bit nozzles is presented. The role of nozzles in drilling technology together with procedures and tests performed on their optimization are reviewed. In addition, some experimental results for circular nozzle obtained both with LDV and PIV are elaborated. The experimental set-up and the testing procedure arc briefly discussed, as well as potential improvements in the design. Possible other applications of LDV and PIV in the domain of petroleum engineering are suggested
THE APPLICATION OF LASERS IN MEASUREMENT OF FLUID FLOW THROUGH DRILLING BIT NOZZLES
Get PDFPrikazane su dvije optičke metode za precizno mjerenje brzine protjecanja fluida: mjerenje brzine na temelju Dopplerovog efekta upotrebom lasera (LDV) i mjerenje brzine fotogramom čestica (PIV), uz postupke za digitalnu obradu signala i snimaka. Prikazana je primjena tih metoda u ispitivanju protjecanja kroz mlaznice dlijeta za bušenje. Uz kratki pregled uloge mlaznica u bušenju, navedeni su dosad primijenjivani postupci njihovog optimiranja. Prikazani su i uzorci rezultata mjerenja mlaznog protjecanja LDV i PIV metodom za mlaznicu kružnog presjeka. Ukratko je komentirana postava eksperimenta zajedno s tijekom ispitivanja. Uz potencijalna poboljšanja mjerene opreme, navedene su mogućnosti upotrebe LDV i PIV metoda u brojnim primjenama u naftnom inženjerstvu.Two optical methods based on laser and video technology and digital signal and image processing techniques - Laser Doppler velocimetry (LDV) and Particle image velocimetry (PIV) were applied in highly accurate fluid flow measurement. Their application in jet velocity measurement of flows through drilling bit nozzles is presented. The role of nozzles in drilling technology together with procedures and tests performed on their optimization are reviewed. In addition, some experimental results for circular nozzle obtained both with LDV and PIV are elaborated. The experimental set-up and the testing procedure arc briefly discussed, as well as potential improvements in the design. Possible other applications of LDV and PIV in the domain of petroleum engineering are suggested
