Abstract: Fluid flow of low permeability reservoir has obvious non Darcy flow characteristic.The fluid will not flow until the formation fluid overcomes certain actuating pressure gradient in the process of test,provided the reservoir is not polluted.As a result,obtaining precise fluid properties and quantity is difficult.Getting stable formation pressure and reservoir properties are more difficult.Through the test technology research,reasonable time plan of test is adopted,stratification straddle test technology is popularized positively and the fracture effect is evaluated by test technology.The difficulty of getting data during the process of testing low permeability reservoir is solved perfectly.

Key words: low permeability reservoir, fluid characteristics, test technology, test system, straddle test, stratification test