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Summary This paper discusses models for one- and two-phase injection-well tests where the injected fluid has a temperature different from that of the reservoir fluid. After a brief discussion of the relative significance of different nonisothermal effects, an integral form of the model equations is used to develop approximate analytical expressions describing temperature and pressure in the reservoir during injection. The expressions are valid for a general variation in viscosity with temperature, and different analytical viscosity functions are used to study the influence of this variation.
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Tor Barkve (1989) studied this question.
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