Abstract: An improved centralizer is provided having a helical blade configuration with an improved geometry that reduces drag and friction forces as well as pressure build up as centralizers on strings are inserted into a borehole. An improved wrench adaptor is also presented that be customized to fit centralizers with varying designs by changing internal adapter rings and which is further configured to be easy to place over a centralizer and will lock in place relative to the centralizer blades when being rotated.

Abstract: An improved centralizer is provided having a helical blade configuration with an improved geometry that reduces drag and friction forces as well as pressure build up as centralizers on strings are inserted into a borehole. An improved wrench adaptor is also presented that be customized to fit centralizers with varying designs by changing internal adapter rings and which is further configured to be easy to place over a centralizer and will lock in place relative to the centralizer blades when being rotated.

Abstract: A guide shoe that utilizes an eccentric nose attached to a cylindrical body that has spiraled, ridged blades extending outward from the body. An orientation system is attached between the body and a hollow shaft. The orientation system is designed to allow free rotation of the body and nose about the shaft during the insertion of the tubing into the hole. It does this by providing clearance between a pawl and notches on the cylindrical body. Indexing of the eccentric nose is provided by a slight retraction of the tubing string in the well hole. Friction between the well hole and ridged blade causes the cylindrical body to rotate about the shaft and lock into an oriented position. The guide shoe is attached to the tubing string by a threaded female connection mating to the matching male connection on the tubing string.