Blowout preventer with removable packer
OwnerLeroy E. Bartholomew, Eric G. Childs +1inventors
InventorsLeroy E. Bartholomew, Eric G. Childs, David M. Callahan
Life of this patent
Estimating the term…
Abstract
An improved ram-type blowout preventer having an improved resilient ram packer which includes an upper retainer plate and a lower retainer plate which each have a front face with a central recess therein, a back and sides, resilient end elements bonded between the plates at the sides and having facing surfaces extending from front to back and a resilient insert shaped to be positioned between said plates and between said end elements with sides mating with the shape of the facing surfaces of the end elements.
Claims8
A ram-type blowout preventer comprising
- a body with a vertical bore therethrough and opposed guideways extending radially away from said bore,
- a ram in each of said guideways,
- means for moving each of said rams in said guideways between a position closing said bore and a position withdrawn into said guideways with said bore open,
- each of said rams having a front face recess,
- a resilient packer in said front face recess of each of said rams,
- said resilient packer having
- upper and lower retainer plates having a front face and sides,
- resilient end elements bonded between said plates and having facing side surfaces extending from the front face of said packer to the rear of said packer adjacent said ram recess,
- a resilient insert having a shape mating with the facing sides surfaces of said end elements and sized to be received between said plates, and
- means for securing said resilient packer within the front face of its ram.
An improved ram front packer for use in the front face of a ram in a ram-type blowout preventer comprising
- upper and lower retainer plates, each having a front face with a central recess, outer sides and backs,
- end elements bonded between said plates at positions between the plates at their outer sides,
- said end elements being resilient and having inner facing surfaces,
- a resilient insert shaped to be positioned between said plates and between said inner facing surfaces of said end elements and having side surfaces mating and engaging with inner facing surfaces of said end elements, and
- means for securing said packer into its desired position in the front recess in a ram.
Dependencies are inferred from the claim text.