| Well test interpretation (WTI), which can know the oil-gas reservoir, functions as a method of reservoir evaluation and a monitor of production performance. WTI differs from core analysis,log data analysis and interpretation, tracking the whole process of the development of the oil-gas field, contrasting the data vertically, which can find more useful information about the oil-gas field development. The Reservoir Parameters provided by WTI, which benefit to continually deepen understanding the reservoir, so as to improve the effect of the oil-field development and economic performance.Bringing in the basic ideas of modern well test analysis, geologic characteristics of the Bei28 Block are analyzed and studied systematically in the paper. Applying the existing log data, the reservoir bed is accurately analyzed and identified, and flow mechanism of the Bei28 Block is figured out. According to the geologic features and the concrete characteristics presented by measured pressure build-up data, multiple theoretic reservoir models are established and bring up to the corresponding evaluation methods of reservoir pressure for different models. Finally, pressure build-up test data of Bei28 Block is analyzed systematically, and some important reservoir parameters are obtained, such as formation flow capacity, flow coefficient, effective permeability, skin factor, wellbore storage factor, interporosity flow parameter, storage factor, formation pressure and so on, which has accomplished the purpose desired and obtained reliable interpreting results.This research has certain significance for interpreting the reservoir parameters of glutinite or buried hill and fracture type reservoir in Hailaer Oil-Field, and can provide technical support for production and dynamic adjustment of Bei28 Block. Meanwhile, it provides a method for helping to reasonably interpret the reservoir parameters of other blocks of Hailaer Oil-Field, which has remarkable economic and social benefit.
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