Inversion of well production capacity curves at Mutnovskoe geothermal deposit

Spotlight of the analysis is on the inversion of well production capacity curves at Mutnovskoe geothermal deposit, Kamchatka. The inversion means the decrease in the flow rate with the drop in the wellhead pressure. It was earlier assumed that, as against Pauzhetka deposit, the wells at Mutnovskoe deposit had no inversion. The calculations performed with regard to the new theoretical concepts show that the inversion is possible. For detecting the inversion of the well production capacity curves, the tests were carried out in three wells at Mutnovskoe deposit. The wellhead pressures were measured in the course of stepped reduction in the well flow rate. The inversion is found in two wells—Geo-3 and Geo-2. The undetected inversion in Geo-4 has a few reasons. The theoretical analysis shows that the complexity of detecting inversion in this well is connected with the low specific flow rate of fluid from the reservoir, and with the presence of lower percent of water in the mixture of water and vapor in the well. Furthermore, the absence of the inversion can be connected with the vapor zone in the upper source area of the well. Thus, the accomplished research allows telling on the presence of the inversion in the well production capacity curves, at least in some curves, at the Mutnovskoe geothermal deposit. It is emphasized that the inversion is observed as small flow rates which are usually of no commercial interest. Nonetheless, the significance of this phenomenon grows in the discussion and decision-making on the adjustment of well flow rates with a view to synchronizing the heat source production and the thermal station operation in the mode of varied load.

Keywords: geothermal deposit, production well, water and vapor mixture, production capacity curve, inversion, wellhead pressure, flow rate.
For citation:

Shulyupin A. N., Chernev I. I., Varlamova N. N. Inversion of well production capacity curves at Mutnovskoe geothermal deposit. MIAB. Mining Inf. Anal. Bull. 2024;(7): 49-60. [In Russ]. DOI: 10.25018/0236_1493_2024_7_0_49.


The studies used the equipment of the Scientific Evidence Storage and Processing Shared Center of the Far East Branch of the Russian Academy of Sciences, supported by the Ministry of Science and Higher Education of the Russian Federation under Contract No. 075-15-2021-663.

Issue number: 7
Year: 2024
Page number: 49-60
ISBN: 0236-1493
UDK: 622.032
DOI: 10.25018/0236_1493_2024_7_0_49
Article receipt date: 27.03.2023
Date of review receipt: 18.05.2023
Date of the editorial board′s decision on the article′s publishing: 10.06.2024
About authors:

A.N. Shulyupin1, Dr. Sci. (Eng.), Director, e-mail:, ORCID ID: 0000-0002-7379-410X, 
I.I. Chernev, Cand. Sci. (Eng.), Deputy Chief Engineer, e-mail:, Kamchatskenergo PJSC branch Renewable Energy, 683009, Petropavlovsk-Kamchatskiy, Russia,
N.N. Varlamova1, Junior Researcher, e-mail:, ORCID ID: 0000-0002-5372-5043,
1 Mining Institute of Far Eastern Branch of Russian Academy of Sciences, 680000, Khabarovsk, Russia.


For contacts:

N.N. Varlamova, e-mail:


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