Invention Grant
- Patent Title: Electric submersible pump with reduced vibration
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Application No.: US14917563Application Date: 2014-09-15
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Publication No.: US10385875B2Publication Date: 2019-08-20
- Inventor: Hao Lam , Arthur I. Watson , Jacques Orban , Lauro De Camargo , David Milton Eslinger
- Applicant: Schlumberger Technology Corporation
- Applicant Address: US TX Sugar Land
- Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
- Current Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
- Current Assignee Address: US TX Sugar Land
- International Application: PCT/US2014/055595 WO 20140915
- International Announcement: WO2015/039008 WO 20150319
- Main IPC: F04D29/66
- IPC: F04D29/66 ; F04D13/10 ; F04D29/046 ; F04B51/00 ; F04D13/08

Abstract:
An electric submersible pump (ESP) with reduced vibration is provided. In an implementation, an ESP section has radial bearings placed at shaft locations of reduced vibration to reduce wear. The locations of reduced vibration are selected to avoid areas of high vibration and vibrational waves that reinforce each other due to structure resonance and natural excitation frequencies. In an implementation, a radial bearing is positioned at a node of reduced vibration of a standing vibrational wave. In an implementation, a succession of multiple radial bearings are spaced at different intervals from each other to avoid conventional even spacing of the bearings that causes standing waves, resonance waves, and vibrational waves at natural excitation frequencies. In an implementation, a span between adjacent radial bearings is selected to spare other adjacent bearings at different spans the effects of vibrations that may extend over a range of excitation frequencies in the ESP section.
Public/Granted literature
- US20160222984A1 ELECTRIC SUBMERSIBLE PUMP WITH REDUCED VIBRATION Public/Granted day:2016-08-04
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