Downhole adjustable mud motor

  • US 9,322,217 B1
  • Filed: 07/15/2015
  • Issued: 04/26/2016
  • Est. Priority Date: 02/11/2015
  • Status: Expired due to Fees
First Claim
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1. A downhole adjustable mud motor for boring a hole in the earth comprising:

  • a. a progressive cavity power section with a power cavity first end, the progressive cavity power section comprising;

    1. a rotor rotatably captured within a stator; and

    2. a plurality of fluid flow paths between the stator and the rotor for flowing drilling fluid; and

    b. a power transmission section connected to the power cavity first end, having an axis and an offset axis, the power transmission section comprising;

    1. a transmission assembly engaging the rotor;

    2. a first adjustable member fastened to the stator;

    3. a second adjustable member configured to simultaneously slide and rotate within the first adjustable member, wherein the second adjustable member comprising a locking member;

    4. a bearing assembly connected to the transmission assembly; and

    5. a fastener operatively connected to the bearing assembly; and

    c. a pressure control valve located in a sub, wherein the sub is fastened to the stator, wherein the pressure control valve is configured to receive the drilling fluid from a surface location and transfer the drilling fluid to the stator.

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