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Thermohydrodynamical tests of gas wells in the conditions of hydrate formation

Authors: Zoya A. VASILYEVA graduated from Lomonosov Moscow State University in 1975. She is a Candidate of Technical Sciences, Associate Professor of the Department of Development and Exploitation of Gas and Gas-Condensate fields of Gubkin Russian State University of Oil and Gas (National Research University). She is specialist in the gas and oil fields development and simulation. Author of more than 70 scientific publications. E-mail: zoyavac@gmail.com
Chenlong LE — post-graduate student of the department «Gas and Gas-Condensate Reservoir Engineering» of Gubkin Russian State University of Oil and Gas (National Research University) (Chinese citizen). E-mail: lcl880301@gmail.com

Abstract: The technique of interpretation of the results of thermohydrodynamical tests of gas wells in the conditions of hydrate formation. It is proposed to implement standard procedures on the phase diagram to construct a curve of phase equilibrium hydrate-gas-water measurements buttonhole temperatures and pressures, which is based on the dependence of the buttonhole temperature from the pressure. The first mode is to determine the coefficients Joule-Thomson at decrease and increase of pressure at reservoir conditions, and then the phase diagram predicted subsequent studies in «no hydrate formation» mode

Index UDK: 622.248.3

Keywords: thermodynamic conditions, hydrate formation, temperature and pressure transient well testing, interpretation

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2. Instruction on complex gas and gas condensate test-wells. Gazprom 086-2010.
3. Istomin V.A., Kvon V.G. Prevention and elimination of gas hydrates in gas production systems. M.: OOO «IRTS Gazprom», 2004, 506 p.
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5. Aliev Z.S., Samuylova L.B., Marakov D.A. Gas-hydrodynamic studies of gas and gas condensate fields and wells. M.: MAKS Press, 2011, 340 p.
6. Barenblatt G.I., Entov V.M., Ryzhik V.M. Theory of unsteady filtration of fluid and gas. M.: Nedra, 1972, 211 p.