statistical appraisal
1.The statistical characteristic of composition fluctuation of ceramic materials has been analyzed in the paper and then the author introduces the principle,ways of prehomogenization and appraisal method and indexes of its result.A case of the clay prehomogenization and its result from a ceramic company at home is of reference value to uses in the field.
2.1. A set of prediction methods of fluid high pressure property parameters of oil and gas reservoir are established with statistical regression, neural network and the EOS method, and then are successfully used for forecasting parameters of over a thousand wells in Shengli oil field and Talimu oil field, which provide essential theory guidance for oil reservoir appraisal, dynamic analysis, reserve calculation and well completion efficiency appraisal of various oil fields.

