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Apparatus and method for measuring while drilling

  • US 8,827,006 B2
  • Filed: 05/12/2005
  • Issued: 09/09/2014
  • Est. Priority Date: 05/12/2005
  • Status: Expired due to Fees
First Claim
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1. An apparatus for transmitting measurements while drilling with a drill string equipped with a mud motor, the apparatus comprising:

  • a measurement-while-drilling tool for placement in the drill string wholly beneath the mud motor such that sensing and signal transmission are performed beneath the mud motor, the measurement-while-drilling tool having a system for transmitting mud pulse telemetry signals upwardly through the mud motor and the drill string to the surface at frequencies below approximately 1 Hz; and

    a rotary steerable system for placement in the drill beneath the mud motor.

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