Study on temperature field of thermal cracking drilling flow field under the condition of bottom hole submerged jet
2020
In the deep well bottom hole environment, there are several different
substances in the process of pyrolysis drilling, such as high temperature
supercritical jet medium, cooling water and cuttings, which can be
considered as submerged non free jet of supercritical fluid in low
temperature environment. From the energy point of view, there are heat
transfer between supercritical fluid and cooling water, heat transfer
between supercritical fluid and bottom rock surface, and heat transfer
between up flow and well wall. Due to the complexity of the components, the
transfer process of these energies is very complex, which has an important
impact on the efficiency of thermal cracking drilling. Therefore, it is of
great significance to study the heat transfer law under the condition of
bottom hole submergence.
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