«Equipment and technologies for oil and gas complex»

Comparative analysis of the results of the studies and calculation models of a gas well operational mode of an Urengoy oil and gas condensate field

UDC: 622.279
DOI: -

Authors:

¹ Ufa State Petroleum Technological University, Ufa, Russia
² Peoples Friendship University of Russia, Moscow, Russia
³ Gazprom dobycha Urengoy, Novy Urengoy, Russia

Keywords: calculation model, well operational mode, concentric lift column, self-killing, gas production, liquid accumulation at the well bottom hole, software package, well studies in the field

Annotation:

The article presents the results of hydrodynamic studies of a well at the Urengoy oil and gas condensate field (OGCF), which has been operated since 2019 using the technology of concentric lift columns (CLC). The study aims to justify the selection of a method for calculating the operating parameters of such a well based on well-known mechanistic models of upward gas-liquid flows. It is noted that the methods for determining wells operational parameters based on the calculation of pressure losses dependence in the gas-liquid flow on the flow rate and prescribed in various software calculation systems, such as PIPESIM, are of undoubted practical importance and are of interest for comparative analysis with other well-known methods. The researches resulted in revealing the fact that the smallest errors of pressure losses calculation during gas-liquid flow movement in the central lift column is characteristic for a modified method of Beggs and Brill, and for the movement in the inter-pipe annular space – a method of LLC "Gazprom VNIIGAZ", modified by the authors of the article. The necessity of adapting the existing calculation models to the operating conditions of CLC wells is shown, which is feasible only on the basis of two-phase flows experimental studies in the range of physical parameters as close as possible to the field ones.

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