A New Steam Properties Calculation Models for Horizontal Well

Junfu XU


During steam flows in horizontal wellbore, the mass flow rate decreases with steam draining into the formation, which causes acceleration pressure drop. Acceleration pressure drop can change steam physical parameters, wellbore pressure distribution and temperature distribution. Based on the rules of mass conservation and energy conservation, model for steam quality variation along the horizontal section was built. Pressure and temperature distribution of injected steam along horizontal section were deduced on the principle of momentum conservation. Models were solved by pressure increment iteration method. The calculation results are compared with the reservoir numerical simulator, which showed that the models in the paper were succinct and accurate.


Variable mass flow; Horizontal wellbore; Steam quality distribution; Pressure distribution; Temperature distribution

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DOI: http://dx.doi.org/10.3968/9455


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