Artificial lift represents an increasingly important part of the oil business. In fact, at the time of this writing, over 90% of the oil wells in the United States used some form of artificial lift. The four basic typeso f artificial lift used in the oil industry are: rod pumping, electric submersible pumping, hydraulic pumping, and gas lift. As the name implies,l i gfta s is the only oneo f the artificial lift systems that does nuost e some formo f mechanical pump to physically force the fluid from one place to another. Becaouf steh is phenomenon; gas lift has certain advantages over the other systems in some instances and occupies a rather unique and important place as a lift mechanism.
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