Tubing friction reducer

A friction reducing apparatus for a tubing assembly having a large length over diameter ratio comprising:

• a cylindrical housing secured around an exterior surface of the tubing, the housing having an outside diameter larger than an outside diameter of the tubing;
• a plurality of blades extending outwardly from the housing along the entire length of the blade for reducing friction between the tubing and an adjacent surface;
• and
• means for securing the blades to the housing.

A tubing friction reducer adapted for mounting on a tubing pipe inside a bore in an underground formation or in a tubular casing installed in the formation, the tubing having an outside diameter normally spaced from an inside wall surface of the bore or casing, the friction reducer comprising:

• a cylindrical body having a first section and a second section in which the cylindrical body is hingedly secured around an exterior surface of the tubing;
• roller bearing means positioned on and extending outwardly from and in generally axial direction along the cylindrical body for reducing friction between the tubing and the wall surface generated upon contact between the tubing friction reducer and the wall surface;
• and
• retaining means for removably securing the roller bearing means to the cylindrical body.

A tubing friction reducer adapted for mounting on a tubing pipe for use inside a bore in an underground formation or in a tubular casing installed in such formation, the robing having an outside diameter normally spaced from an inside wall surface of the bore or casing, the tubing friction reducer comprising:

• a cylindrical body having a first section and a second section in which the cylindrical body is hingedly secured around an exterior surface of the tubing;
• roller bearing means extending outwardly from the cylindrical body for reducing friction between the tubing and the wall surface created upon contact between the tubing friction reducer and the wall surface;
• and
• a plurality of collapsible springs for securing the roller bearing means to the cylindrical body.