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
Apparatus and methods for color displays
System and method for providing an extended platform for an operating system
Control of protein activity using a conducting polymer
Lithographic apparatus and device manufacturing method
Scalable pixel coverage function-map
Toilet bowl
Small molecule inhibitors of kynurenine-3-monooxygenase
  Randomly Featured Patents
System and method for voltage-based plasma excursion detection
Planetary gear train of automatic transmission for vehicles
Copper conductive paint for porcelainized metal substrates
Active-matrix liquid-crystal display device and substrate therefor
Railway car
Method of lens casting without using a gasket
Recirculatory apparatus for spraying mould parting agents and other substances
Airbag device
End reactor