The property of rod pumping pump in foreign country

The rod pumping pump is the most important key parts of the rod pumping system.For promoting technical advance of rod pumping and improving the production economic benefit,a series new rod pumping pump was successful improved in foreign country,two new pumping viscous oil pumps,i.e.the dual string pump and multi-phase pump;four new sand control pumps,i.e.corrosion-resist pump,self-rotating plunger pump,sand and gas control pump rotational flow plunger pump;three high efficient bottom hole pumps,i.e.coiled tubing pump,down stroke pump,pump with collecting plunger.