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INTEGRATED BEARING SECTION AND METHOD

  • US 20190330922A1
  • Filed: 04/27/2018
  • Published: 10/31/2019
  • Est. Priority Date: 04/27/2018
  • Status: Active Grant
First Claim
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1. An integrated bearing section for a mud lubricated drilling motor, comprising:

  • a housing with a housing inner bore;

    a mandrel at least partially disposed within the housing inner bore, the mandrel including an outer surface having a series of circumferential grooves;

    a plurality of spherical members, wherein each of the spherical members is disposed partially within one of the circumferential grooves of the mandrel;

    an outer radial bearing disposed around the mandrel and within the housing inner bore, the outer radial bearing including a flat profile inner surface, wherein at least one of the spherical members engages the flat profile inner surface of the outer radial bearing for allowing relative axial movement between the mandrel and the outer radial bearing; and

    an outer thrust bearing disposed around the mandrel and within the housing inner bore, the outer thrust bearing including an inner surface having a circumferential groove, wherein at least one of the spherical members engages the circumferential groove of the outer thrust bearing.

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