SECTIONAL BOREHOLE AXIAL PISTON PUMP FOR OIL PRODUCTION Russian patent published in 2024 - IPC F04B47/06 F04B23/06 F04B1/20 

FIELD: oil industry.

SUBSTANCE: invention relates to oil industry, in particular to sectional borehole axial-piston pumps for oil production. Pump comprises sections. Each section includes housing 1 with installed in it block of cylinders 4 with pistons 5, 5', inclined disc 7 installed on drive shaft 6. Housing 1 is equipped with holes 11, 11' for fluid supply to cylinders 4. Cylinders 4 are equipped with intake and delivery channels 12, 12' and 13, 13'. Delivery channels 13, 13' are connected to common channels 14, 14' in housing 1. From above housing 1 is closed by upper cover 2, and from below – by lower cover 3. Shaft 6 fitted in bearings 8, 9, 10 is passed through covers 2, 3. Covers 2, 3 are provided with holes 15, 15', 16, 16' for connection to common channels 14, 14' of housing 1 and grooves 17, 17', 18, 18' with sealing rings to ensure tight connection of sections to each other. Shaft 6 is equipped with inlet and outlet sections 19, 20. Outlet section 20 is made with expansion and hole 21 for inlet section 19 of the next pump section.

EFFECT: invention is aimed at ensuring oil production from oil producing wells using a sectional borehole axial piston pump for oil production in a wide range of supply with possibility of supply control.

1 cl, 3 dwg