ELECTRICAL SUBMERSIBLE PUMP
A submersible pump (or electric submersible pump (ESP)) is a device which has a hermetically sealed motor close-coupled to the pump body. The whole assembly is submerged in the fluid to be pumped. The main advantage of this type of pump is that it prevents pump cavitation, a problem associated with a high elevation difference between pump and the fluid surface. Submersible pumps push fluid to the surface as opposed to jet pumps having to pull fluids. Submersibles are more efficient than jet pumps.
PNEU PUMP
Pneu Pump is a pump that uses compressed air in motion. This type of pump is old technology that is rarely or hardly used in the lifting of oil in the world of Oil & Gas. The pump is most suitable in this case is a pump that can sandy and has a production rate can be set as low as in the range 50 to 200 BFPD.