Invention Grant
- Patent Title: Downhole motor
- Patent Title (中): 井下电机
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Application No.: US12996677Application Date: 2009-06-11
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Publication No.: US08967299B2Publication Date: 2015-03-03
- Inventor: Keith A. Bullin
- Applicant: Keith A. Bullin
- Agency: Bushman Werner, P.C.
- International Application: PCT/US2009/003505 WO 20090611
- International Announcement: WO2009/151608 WO 20091217
- Main IPC: E21B4/00
- IPC: E21B4/00 ; E21B7/06

Abstract:
A downhole motor having a motor section, a drive shaft section, and an output shaft section. The output shaft section has a rotatable output shaft with a first end and a second end. A first thrust bearing assembly is located proximal to the first end of the output shaft, and a second thrust bearing assembly is located proximal to the second end of the output shaft. A radial bearing assembly is disposed between the first and second thrust bearing assemblies.
Public/Granted literature
- US20110147091A1 DOWNHOLE MOTOR Public/Granted day:2011-06-23
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