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
Method and apparatus to adjust received signal
Compositions and methods for activating innate and allergic immunity
Method for olympic event hospitality program management
Photomask blank, photomask blank manufacturing method, and photomask manufacturing method
Powerline communication receiver
Digital broadcasting system and method of processing data
  Randomly Featured Patents
Distance measuring apparatus
Animal model for AIDS
Methods and systems for packaging a product
Handling means for use in handling planar objects
Disposable bedpan insert
Method for preparing benzisoxazole methane sulfonyl chloride and its amidation to form zonisamide
File folder having a pocket
Energetic composites and method of providing chemical energy
Method for routing multiple paths through polygonal obstacles
Convertible toy wagon having additional storage capacity