Abstract: According to the actual cases of the low system efficiency of pump unit and under the actual exploitation conditions in Kelamayi Oilfield, the mathematical models of intermittent pumping well was established in the paper. The models include the parameters of the reservoir inflowing, annular testing, and
pump unit optimizing system, as well as the whole system hardware configuration. It improved the computer management and real - time monitor, and presented an informative approach to improve the system efficiency. It also provides a guidance meaning for exploiting low permeability and production oilfield.

Key words: mechanical recovery, system efficiency, parameter optimum, annular space, testing