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
Method and system for an integrated host PCI I/O bridge and dual port gigabit ethernet controller
Stable pharmaceutical composition and methods of using same
Solid-state image sensing apparatus and electronic apparatus
HSP20 inhibits amyloidogenesis and neurotoxicity
Audio/video program-related hyperlink printer
Radio communication system, base station apparatus, terminal apparatus, and radio communication method for radio communication system
Electrostatic charger and image forming apparatus
  Randomly Featured Patents
Alternating horizontal air flow chiller
Uplink pilot and signaling transmission in wireless communication systems
Mold for integrated mold and casting structures
Interspecific tree named: `Wescot` armeniaca)).times.Prunus salicina).times.Prunus armeniaca]
Method and apparatus for controlling an actuatable restraining device in response to discrete control zones
Millimeter waveband transceiver, radar and vehicle using the same
Method of enantioselective nucleophilic addition reaction of enamide to carbonyl group and synthesis method of optically active .alpha.-hydroxy-.gamma.-keto acid ester and hydroxydiketone
System and method for receiving and transferring a telephone directory from one cellular telephone to the same or another
Versatile communication network test apparatus and methods
4H-1-benzopyran-4-one compounds which have anti-inflamatory or immunodulating action