Patent ID: 6109348
Filing Date: 2000-08-29
Classification: E21B

Abstract:
A rotating blowout preventor for a well containing a well head and drill pipe extending through the well head into the well, comprising an outer housing for attachment to the well head and having a housing opening; an inner housing journaled for rotation in said outer housing; a stripper rubber removably disposed in said inner housing around the drill pipe for rotation with said inner housing and the drill pipe; a pleated reinforcement provided in said stripper rubber for reinforcing said stripper rubber; a stripper rubber mount extending through said housing opening for carrying said stripper rubber, whereby said stripper rubber and said stripper rubber mount normally rotate with said inner housing and the drill pipe with respect to said outer housing and said stripper rubber is removable from said inner housing responsive to removal of said stripper rubber mount from the well; and a clamp engaging said stripper rubber mount and the drill pipe for lifting said stripper rubber mount from said outer housing and said stripper rubber from said inner housing responsive to raising of the drill pipe in the well.