Hydraulic Pumping systems use fluid (water or light oil), injected from surface facilities, to provide lifting force down-hole. There are two types of hydraulic pumps, a reciprocating pump, and a jet pump. Reciprocating pumps use power fluid to operate the pump down-hole, by driving a piston inside the pump. Jet pump principle is similar to a jet engine or pressure washer. Pressurized fluid is injected into the pump and through a small nozzle where the power fluid becomes pressurized and high-velocity fluid, it will mix with the reservoir fluid. Under high pressure, the mixture would travel to the surface. Jet pumps are used more frequently than reciprocating pumps.
Jet pumps used at the depth of up to 17,000 feet and has a wide producing range between 100 B/D to 10,000 B/D. Jet pumps can be circulated in and out of the well, hence removing the requirements of a wire-line unit or any other deployment method. In some instances, slick-line may be required, though.
n general, the Jet Pump system consists of:
- Down-hole jet pump
- Surface power fluid system, including a power source ( prime mover)
- Surface Pump
Jet pumps have always been underutilized and attracted very little interest. However, the shale boom in North America brought more interest from companies with a number of new technologies coming to the market.