Release:
2025. Vol. 11. № 3 (43)About the authors:
Ekaterina E. Sandalova, Postgraduate Student, University of Tyumen, Tyumen, Russia; Head of the Department, Gazpromneft Group of Companies, St. Petersburg, Russia; e.e.sandalova@utmn.ruAbstract:
The temperature distribution along the wellbore of a gas condensate well is an important parameter for predicting its operation and successful production at gas condensate fields. Temperature affects the assessment of gas hydrate formation, liquid dropout, and corrosion in tubing, which impacts capital expenditures, which must be factored in during the early stages of field development. The objective of this paper is to develop a method for rapidly estimating the temperature of a gas condensate mixture along a wellbore. Examples of fields for which this topic is relevant are provided. A one-dimensional heat conduction equation is considered, taking into account convective heat transfer and heat loss through the wellbore sidewall. It is shown that an exact analytical solution to this equation provides an adequate description of the temperature field along the wellbore, both in steady-state conditions and during its establishment. A numerical solution to this equation is also obtained using a grid method with an explicit scheme. The results of the analytical and numerical solutions were compared with the results of calculations using specialized software, as well as with actual data from four wells at three gas condensate fields under various operating conditions. Good compliance was found between these results. Based on these solutions, graphs were constructed to determine the temperature along the wellbore from startup to reaching steady-state conditions, as well as during steady-state conditions. The feasibility of estimating the heat transfer coefficient between the wellbore and the surrounding soil is demonstrated, and a methodology for this assessment is described.References:
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