The technology of joint work of electric heat screw pump and formation tester is an advanced one for production test in heavy oil well or in well where oil is with high freezing point. It better solves the problems of production test and draining in the particular reservoirs. The draining of the screw pump can actually reflects the liquid property and productivity of the formation; special cable in the hollow rod can increase the fluid’s temperature, reduce its viscosity, and therefore enhance the mobility; the formation tester can be used for acquiring formation pressure, temperature and so on. Field application indicates that this technology is with better application future.
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