ANALYSIS OF INFLUENCE OF PROPERTIES OF REAL AND IDEAL GASES ON THERMAL CONDUCTIVITY OF OIL AND GAS-LIQUID MIXTURE
UDC: 622.276
DOI: 10.33285/2073-9028-2020-3(300)-39-45
Authors:
Shotidi Konstantin H.
1,
Krasen'kov Sergey V.2
1 Gubkin Russian State University of Oil and Gas (National Research University), Moscow, Russian Federation
2 LLC OKB-GAMMA, Moscow region, Ivanteevka, Russian Federation
Keywords: coefficient of thermal conductivity of the fluid, paraffin’s, complications in work of wells, methods of dealing with complications, downhole heating cable, electric heating systems, temperature field, heat transfer in well
Annotation:
One of the problems that throughout the history of commercial oil production significantly has been complicating wells operating conditions is paraffin deposits. There are a number of factors contributing to the formation of paraffin deposits, with changes in well temperature and pressure conditions being most significant, in particular, a decrease in the temperature of the fluid during production. Today, fluid temperature distribution along the depth is rarely measured in wells. Therefore, for most wells, it is necessary to build thermograms using the corresponding calculated dependencies. To implement the required calculation algorithm, a basic set of initial data is required. Due to the fact that the fluid is a mixture of oil, water and gas, many of the necessary parameters must be calculated specifically for the mixture, for example, density, heat capacity, thermal conductivity. The first two are calculated according to the mass additivity rule, whereas for thermal conductivity there are several calculation methods applicable to a particular case. The article presents a methodology for calculating the coefficient of maximum thermal conductivity of a fluid. A comparative analysis of the effect of the properties of real and ideal gases on the calculated coefficient of maximum thermal conductivity of the fluid is also carried out.
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