Diagnosing of hydrates formation in field gas pipelines by analyzing pressure fluctuations at the inlet of a complex gas treatment unit (CGTU)
UDC: 62-9-1:54-162.32:62-98:661.91
DOI: 10.33285/0130-3872-2022-8(356)-45-50
Authors:
BUNYAKIN ALEXEY V.
1,
VELICHKO EVGENY I.1,
INOZEMTSEV DMITRY A.1,
MUZYKANTOVA ANNA V.1
1 Kuban State Technological University, Krasnodar, Russia
Keywords: unsteady flow of a two-phase medium, gas hydrates in field pipelines, gas-dynamic instability
Annotation:
The process of gas hydrates precipitation in the pipelines of a field gas gathering network (looping) under certain operating conditions exhibits poorly predictable behavior. Unpredictability is manifested in a rapid increase in the rate of hydrates formation, while up to a certain point this process is quite slow, "sluggish" (regular). Hydrate formation slows down the flow, heat transfer decreases (the temperature in the well pipeline drops thus causing even more intense release of hydrates (the transition of the gaseous phase to liquid, and then to a solid one). Thus, starting from a certain moment, with an increase in the rate of hydrates formation, the process acquires an "avalanche-like character", a kind of instability is created. At the initial stage, this instability manifests itself in pressure fluctuations (at the well pipeline outlet) of such a low frequency that they almost do not differ from the planned change in flow rate when controlling the production process. The presented work estimates the unstable harmonics (by the order of natural frequencies magnitudes), which characterize pressure fluctuations in the field well pipelines in case of change in the rate of hydrate formation.
Bibliography:
1. Uilkinson Dzh.Kh. Algebraicheskaya problema sobstvennykh znacheniy / per. s angl. V.V. Voevodina, V.N. Faddeevoy. – M.: Nauka, 1970. – 564 s.
2. Sovershenstvovanie tekhnologiy dobychi i podgotovki uglevodorodnoy produktsii nizhnemelovykh zalezhey Urengoyskogo NGKM (informatsionnyy otchet za I polugodie 2006 goda) / NTTs "Urengoy-Gaz-Prom"; ruk. temy A.A. Tipugin. – 2006.
3. Obrazovanie otlozheniy v protochnoy chasti nagnetatelya posle izvlecheniya gaza iz podzemnogo khranilishcha gaza / M.S. Stepanov, P.S. Kunina, D.A. Inozemtsev, V.V. Dubov // Problemy sbora, podgotovki i transporta nefti i nefteproduktov. – 2018. – № 2(112). – S. 61–66. – DOI: 10.17122/ntj-oil-2018-2-61-66
4. Stepanov M.S., Inozemtsev D.A., Bunyakin A.V. Osobennosti postroeniya matematicheskoy modeli tekhnicheskogo sostoyaniya tsentrobezhnogo nagnetatelya po termogazodinamicheskim parametram // Tekhnologicheskoe oborudovanie dlya gornoy i neftegazovoy prom-sti: sb. tr. XVIII mezhdunar. nauch.-tekhn. konf. "Chteniya pamyati V.R. Kubacheka", Ekaterinburg, 02-03 apr. 2020 g. – Ekaterinburg: Ural'skiy gos. gornyy un-t, 2020. – S. 190–193.
5. Velichko E.I., Muzykantova A.V., Inozemtsev D.A. Vozniknovenie otkazov energeticheskogo oborudovaniya neftegazovoy otrasli v zavisimosti ot perioda ego ekspluatatsii // Nauka. Novoe pokolenie. Uspekh: materialy Mezhdunar. nauch.-prakt. konf., posvyashchennoy 75-letiyu Pobedy v Velikoy Otechestvennoy voyne, Krasnodar, 28 marta 2020 g. – Krasnodar: Izdat. Dom – Yug, 2020. – S. 23–28.
6. Gas Turbine Driven GPU Diagnostics by the Gas Path Parameters / D.A. Inozemtsev, E.I. Velichko, A.V. Bunyakin, A.V. Muzykantova // IOP Conference Series: Earth and Environmental Science. – 2021. – Vol. 720. Int. science and technology conf. "Earth science", Jan. 25-26, City of Vladivostok, Russian Federation. – DOI: 10.1088/1755-1315/720/1/012076
7. Modelirovanie tekhnologicheskikh protsessov transporta gaza v magistral'nykh truboprovodakh / P.S. Kunina, A.V. Bunyakin, E.I. Velichko [i dr.] // Territoriya Neftegaz. – 2016. – № 5. – S. 30–33.
8. Velichko E.I., Inozemtsev D.A. Rol' parametricheskoy diagnostiki v obshchey sisteme opredeleniya tekushchego tekhnicheskogo sostoyaniya gazoperekachivayushchikh agregatov // Problemy geologii, razrabotki i ekspluatatsii mestorozhdeniy i transporta trudnoizvlekaemykh zapasov uglevodorodov: materialy Vseros. nauch.-tekhn. konf. (s mezhdunar. uchastiem), Ukhta, 05-06 noyab. 2020 g. – Ukhta: UGTU, 2021. – S. 238–241.
9. Neispravnosti vyyavlyaemye metodom diagnostirovaniya GTD po termogazodinamicheskim parametram / D.A. Inozemtsev, E.I. Velichko, A.V. Muzykantova, M.N. Abdullaev // Nauka. Novoe pokolenie. Uspekh: materialy II Mezhdunar. nauch.-prakt. konf., Krasnodar, 17 apr. 2021 g.: v 2 t. – Krasnodar: Izdat. Dom – Yug, 2021. – T. 1. – S. 249–251.
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