Downhole oscillator

  • US 9,885,212 B2
  • Filed: 03/29/2012
  • Issued: 02/06/2018
  • Est. Priority Date: 03/29/2011
  • Status: Active Grant
First Claim
Patent Images

1. A downhole oscillating tool, comprising:

  • a generally cylindrical eccentric member, comprising a closed end and an opposite open connection end, and comprising an outer diameter;

    said eccentric member functionally coupled to a drill string at its open connection end;

    said eccentric member having an enlarged portion extending axially from said closed end of said eccentric member, wherein said enlarged portion has a smaller surface area in relation to the remaining portion of said eccentric member;

    a motor, wherein said motor is operatively connected to said eccentric member; and

    wherein said eccentric member and said motor are at least partially contained within a housing.

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