Analytic modeling of the thermal field behavior in case of radial and linear filtration in the near-wellbore area

The dynamics of the temperature field in oil wells for hydrocarbon fields development carries a large amount of useful information, due to which it is possible to evaluate the state of the near-wellbore layers. This information is extremely useful for the purpose of oil and gas field development. Production logging techniques often use temperature logs to evaluate the near-wellbore area, where the presence of fractures in the rocks or well cement can be potentially detected. These types of fractures can be involved in the phenomenon of unproductive injection, where injected water instead of going to the target formations goes into non-target formations. It is important to correctly diagnose the type of behind the casing crossflows in the near-wellbore zone, as this will determine which type of workovers should be used for crossflows elimination. The paper considers analytical modeling of the temperature field behavior in a well for the cases of radial and linear filtration in a porous medium.