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
Method and apparatus for providing charging status information to subscriber of communication service
Discharge lamp comprising coated electrode
System and method for converting biomass to ethanol via syngas
Efficient file system metadata scanning using scoped snapshots
Biomedical electro-stimulator
Adhering composition and method of applying the same
  Randomly Featured Patents
Cutting arrangement for cutting paper or sheet webs
Apparatus for retrieving spherically shaped cleansing bodies
Method for producing aromatic carboxylic acids
Superconductor analog-to-digital converter
Servo steering mechanism for boats for example
Grout sealant applicator
Flow diverter for controlling the pressure and flow rate in CPAP device
Vehicle display apparatus
Operational ground support system
Memory system having multiple reading and writing ports