Crude oil extraction pump
US12416226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2021 |
| Grant date | Sep 16, 2025 |
| Priority date | — |
| Expiry date | Feb 8, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/041
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A crude oil extraction pump includes: a production pipe having a tubular shape along an axis extending in a vertical direction; a pump rotor extending in a direction of the axis inside the production pipe; and a pump stator which is provided between the production pipe and the pump rotor to surround the pump rotor, wherein the pump rotor includes a plurality of pump shafts which are sequentially connected in the direction of the axis, an impeller which rotates together with the pump shaft to pump crude oil upward, and a thrust collar which protruding radially outward from the pump shaft, and wherein the pump stator includes a tubular stator body and a thrust pad protruding radially inward from an inner peripheral surface of the stator body and supporting the thrust collar from below to be slidable in the circumferential direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.