Patent ID: 6640892
Filing Date: 2003-11-04
Classification: E21B

Abstract:
A tubing string rotator comprising:(i) an outer housing having an upper end and a lower end with an internal bore extending therethrough from said upper to said lower end; (ii) a gear mandrel receivable and supportable within said internal bore of said outer housing, said gear mandrel having an upper end and a lower end and an internal surface that defines an internal bore extending through said gear mandrel from said upper to said lower end; and, (iii) a tubing string hanger having an upper end, a lower end and an external surface, said external surface of said tubing string hanger having a series of circumferentially positioned generally downwardly oriented teeth, said tubing string hanger receivable and suspendable within said internal bore extending through said gear mandrel such that said teeth on said tubing string hanger engage a series of generally upwardly oriented teeth circumferentially positioned about said internal surface of said gear mandrel whereby rotational force applied to said gear mandrel is at least partially transferred to said tubing string hanger through engagement of said generally upwardly and said generally downwardly oriented teeth causing said tubing string hanger to rotate with said gear mandrel.