Resources Contact Us Home
Tubing friction reducer

Image Number 4 for United States Patent #5692563.

A tubing friction reducer is mounted on a length of tubing within a bore hole. The friction reducer includes a cylindrical body having a first section and a second section hingedly secured around an exterior surface of the coiled tubing, the cylindrical body having an outside diameter larger than an outside diameter of the coiled tubing and less than an inside diameter of an adjacent bore surface. A plurality of roller bearings positioned on and extending outwardly from the cylindrical body extending in a generally axial direction along the cylindrical body for the purpose of reducing friction between the coiled tubing and the bore surface generated upon contact between the coiled tubing and the bore surface. Retaining mechanisms such as collapsible springs are included for securing the roller bearings to the cylindrical body. The tubing friction reducers are placed along the tubing at intervals to either minimize injector force, prevent buckling, and tubing failure, due to buckling or wear.

  Recently Added Patents
System and method of interfacing co-processors and input/output devices via a main memory system
Circuit arrangement for a piezo transformer, and method therefor
Method and apparatus for token-based context caching
Round carrying case
Methods and systems for temporarily sharing position data between mobile-device users
Method of fabricating display device
Method of and apparatus for recording motion picture, which generate encoded data with higher compression efficiency using a motion vector similarity
  Randomly Featured Patents
Method for patterning sensitive organic thin films
Secured network system
Toner cartridge having a toner agitator and a reciprocally moving member coupled to the agitator, and an image forming apparatus
Method of data backup in a computer system and a storage system therefor
Extensible seating article and mechanism
Anti-FGFR2 antibodies
Device for extracting a substance for the preparation of a drink
Constant current source having a controlled temperature coefficient
Crop processor and blower arrangement for a forage harvester
Differential readout from pixels in CMOS sensor