Abstract: Because of the multi solution of well test analysis, and no special technique method of reliability evaluation of explaration bresult, pressure distribution analysis is used to evaluate the explaration result obtained form well test, the data from the explaration is dipicted into the inter well pressure distribution map between producers and injectors, and furtherly,the map is employed to check the accuracy shch parameters as permeability and so on, the problem of well test esplaration multi soluaiton is overcome through adajusting pressure distribution. The formation parameters can be obtained more precissily, the reliability of well test explaration can be daviced.

Key words: well test, pressure distribution, permeability, inter well pressure