Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Pilot casing mill










Image Number 2 for United States Patent #5027914.

A pilot casing mill for removing unwanted pipe from a well bore, which includes a cylindrical pilot having helical vanes and adapted for mounting on one end of a cylindrical mill body. The mill body is provided with longitudinal slots which receive outwardly-extending blades fitted with multiple cutting elements for engaging and cutting the pipe when the pilot casing mill is mounted on the end of a rotatable drill string and inserted in the well. In a preferred embodiment of the invention the blades are removably secured in the slots by removable wedge blocks and may be longitudinally adjusted in place to align adjacent rows of cutting elements, by operation of multiple adjusting screws seated against an adjusting screw ring mounted in a circumferential slot provided in the mill body.








 
 
  Recently Added Patents
Devices including composite thermal capacitors
Image forming apparatus acquiring image processing time detected when the acquired time is longer that the previously set time and to correct output image density using generated patch pattern
Methods circuits apparatuses and systems for facilitating access to online content
Method and system for shared high speed cache in SAS switches
Identifying multi-component carrier cells
Business flow processing method and apparatus
Uplink synchronization management in wireless networks
  Randomly Featured Patents
Synthetic fuel containing methanol and butanol
Adapter for fixation of a robotic drive in a car
Through tubing progressing cavity pump
Human hydrolase-like molecules
Surface pattern for a paper product
Purification of plasminogen activator inhibitor 2 by immunoaffinity chromatography
System for measuring particulate discharge from vehicular internal combustion engine
Neutron detector
Fixed shift amount variable length instruction stream pre-decoding for start byte determination based on prefix indicating length vector presuming potential start byte
Curtain material