Considering the problem that different diameter combined tubing are adopted and conventional plunger lifting no longer applies in deep well,this paper presents a kind of new relaying type plunger gas-lift equipment applied to upper large down junior combined tubing.

Effects of Porous Plugs on the Refinement of Liquid Aluminum Alloy in Holding Furnace;

Study on plunger lift technique with gas produced from in-situ wells were carried out with field experiments conducted, which proved that.

In this paper, a dynamic model for plunger lift operations was established, the dynamic.

The methods for the plunger liftsystem analysis and well completion design are introduced, and a statement is made on the selection of the accessory tools and the optimization of the string as well as the surface equipment matching.