Resources Contact Us Home
Expandable reamers for earth boring applications

Image Number 18 for United States Patent #7900717.

An expandable reamer apparatus for drilling a subterranean formation includes a tubular body, one or more blades, each blade positionally coupled to a sloped track of the tubular body, a push sleeve and a drilling fluid flow path extending through an inner bore of the tubular body for conducting drilling fluid therethrough. Each of the one or more blades includes at least one cutting element configured to remove material from a subterranean formation during reaming. The push sleeve is disposed in the inner bore of the tubular body and coupled to each of the one or more blades so as effect axial movement thereof along the track to an extended position responsive to exposure to a force or pressure of drilling fluid in the flow path of the inner bore.

  Recently Added Patents
Method for distributing advertisements to client devices using an obscured ad monitoring function
Control service for relational data management
Morphinan compounds
Method of motion correction in optical coherence tomography imaging
Method for culturing lactic acid bacterium and method for producing fermented milk
Projection-type video-image display apparatus
Apparatus and method for an iterative cryptographic block
  Randomly Featured Patents
Planing float with lateral motion control
Self-contained, two-piece gasket seal assembly for drains
Optical module and optical hub system
Interactive control of voxel attributes using selectable characteristics
Insecticidal composition
Methods and apparatus for producing sheaths for battery electrodes
System and method for re-generating packet load for load test
Cut of piezoelectric oscillator, piezoelectric oscillator, and piezoelectric device
Applying constraints to block diagram models