Resources Contact Us Home
Directional drilling control

Image Number 4 for United States Patent #7823655.

Methods and apparatus for using a quill to steer a hydraulic motor when elongating a wellbore in a direction having a horizontal component, wherein the quill and the hydraulic motor are coupled to opposing ends of a drill string, by monitoring an actual toolface orientation of a tool driven by the hydraulic motor via monitoring a drilling operation parameter indicative of a difference between the actual toolface orientation and a desired toolface orientation, and then adjusting a position of the quill by an amount that is dependent upon the monitored drilling operation parameter.

  Recently Added Patents
Fluid conduit with PTC fabric heating
Method and apparatus for decoding/encoding a video signal with inter-view reference picture list construction
Non-volatile memory cell containing a nano-rail electrode
Network attachment for IMS systems for legacy CS UE with home node B access
Modification of an object replica
Strap-hook ring
Charge pump circuit and power-supply method for dynamically adjusting output voltage
  Randomly Featured Patents
Backpacking jacket
Systems, methods, and media for coordinating the presentation of media with an event
Method for producing cathode structure for cathode ray tubes utilizing urea-containing slurry
On-chip temperature detection device
Drag and drop stateless data class specification and programming
Atherectomy device having trapping and excising means for removal of plaque from the aorta and other arteries
Hybrid audio/video entertainment system
Antibodies to Tie1 ectodomain
Apparatus for and method of controlling a vehicle
Method and system for gash parameter extraction of a cutting tool