With more than 40 years experience, our manufacturing facility has become one of the largest subsurface sucker rod pump manufacturers in China. Besides tubing pumps and rod pumps, the company has also developed a series of special purpose pumps to meet the requirements of different well conditions. Subsur face pumps manufactured by the company comply strictly with API standard, GB/T18607-2001 Specification for Subsurface Sucker Rod Pumps and Fittings, or Q/SJ0087- 2003 Subsurface Pumps. From design to the complete products, all procedures are controlled by ISO9001 quality control system.
Subsurface pumpsm anufactured include both tubing pumps and rod pumps. Pumps which are manufactured strictly according to standard are rfeferred to as conventional subsurface pumps, and other pumps which have different structures, (for ex- ample, thick-oil recovery pumps, anti-gas lock pumps, sand control pumps), are referred to as special purpose pumps.
The operation principle is as follows: during the up-stroke, the plunger drives the fluid in the upper chamber into the tubing on the pump, and at the same time, fluid in the well flows into and fills the lower chamber of the pump under the action of the differential pressure. During the down-stroke, fluid in the lower chamber flows into the upper chamber through the traveling valve. The well fluid is pumped to the ground by the recip- rocating motion of the plunger.
We are a western company that sells and exports Oil Industry equipment directly from China. If you need to cut cost but can not risk quality or supply issues, we can help! 