Resources Contact Us Home
Subsurface well apparatus

Image Number 19 for United States Patent #6055213.

Method and apparatus for actuating one or more downhole well tools carried by a production or workstring conduit having an imperforate wall and for blocking fluid communication between an activating fluid body and a second fluid source within said well across dynamic seals between actuating members of the well tool, by producing selective signals through the conduit wall detectable by a member to produce an activating signal for actuating the downhole well tool by a downhole energy source.

  Recently Added Patents
Portable electronic device housing including hinge
Method to alter silicide properties using GCIB treatment
Ni-, Co-, and Mn- multi-element doped positive electrode material for lithium battery and its preparation method
Systems and methods for providing live voicemail to a mobile handset
MOS transistor having combined-source structure with low power consumption and method for fabricating the same
Separate matching models based on type of phone associated with a caller
Pre-fetching map data using variable map tile radius
  Randomly Featured Patents
Vehicle-mounted, rear-directed message display apparatus
Apparatus for recording and reproducing digital data
High temperature chemical reaction processes utilizing fluid-wall reactors
Systems and methods for operating a measurement and testing instrument
Method for treating prostatitis utilizing modified pore-forming protein proaerolysin
Tire pressure indicator
Filler material for filling an outlet aperture of a casting ladle or similar container and a process for producing the filler material
Optical module and method of making the same and method of adjusting rotation angle of optical fiber
Impregnation of electrodes for nickel cadmium batteries
Apparatus for switching an object managing method and a method thereof