Application of lifting injection-recovery technology with thermal jet pump in Henan oilfield

Polish rod lagging,high resistance of fluid entering pump,rod and tube partial-wear,and unfitting sandy wells or deviated wells with inclination of more than 70 degrees exist in conventional lift technology during the development of super-heavy oil in Henan heavy oilfield.Lift technology with jet pump has been researched in steam huff-puff well to solve those problems.Research results show that the technology can prolong production cycle,enhance oil-steam ratio,improve development effect of super-heavy oilfield,and eliminate polish rod lagging and rod and tube partial-wear.This paper mainly discusses the composition,principle,technical characteristics and field application results of this technology.