Abstract:

It is an effective way to enhance or recover oil production by increasing the pump setting depth. An assumption is put forward by a western oil field of our country to solve the overload of the horsehead, the over torque of the crank and the over stress of the string by using aluminium sucker rods instead of steel rods in deep well pumping. In this paper, the formula of setting depth of taper rods is derived according to the theory of pumping rod design, and a contrast analysis is made about the calculation result under a series of different technological parameters，Besides the preiiminary study of the feasibility is conducted that aluminium rods are used in deep well pumping.

Key words: Sucker rod, Rod string design, Deep zone producing