Ram-type blowout preventer
AssigneeCameron Iron Works, Inc.
InventorLeonard E. Williams, Jr.
Life of this patent
Estimating the term…
Abstract
A ram-type blowout preventer including a body with a central bore and guideways extending outward therefrom, a ram in each guideway with means for moving it inward and outward and means for compensating for wear of the guideway or ram including at least one skid secured to the lower surface of the ram.
Claims22
A ram-type blowout preventer comprising
- a body having a central bore extending therethrough and opposed aligned ram guideways extending outward from said central bore,
- a ram in each guideway and having a lower surface,
- means for moving said rams into bore closing position and to retracted position out of said bore, and
- non-resilient means of each of said rams to compensate for wear of said guideways and maintain said rams in their desired position in their guideways.
An improved ram structure for use in a ram-type blowout preventer having a central bore and guideways extending therefrom comprising
- a ram body having a transverse shape conforming to the shape of its guideway, a lower surface, a front recess for receiving front packing and means for connecting to an actuator, and
- means on the lower surface of the ram body to compensate for wear of its guideway.
A ram-type blowout preventer comprising
- a body having a central bore extending therethrough and opposed aligned ram guideway extending outward from said central bore,
- a ram in each guideway and having a mud slot in its lower side,
- means for moving said rams into bore closing position and to retracted position out of said bore,
- two skids secured to the lower surface of said ram in said mud slot, and
- at least one shim positioned between each skid and the ram.
A ram-type blowout preventer comprising
- a body having a central bore extending therethrough and opposed aligned ram guideways extending outward from said central bore,
- a ram in each guideways and having a lower surface,
- means for moving said rams into bore closing position and to retracted position out of said bore,
- two skids secured to the lower surface of said ram and being spaced apart to form a mud slot, and
- at least one shim positioned between each skid and the ram.
A ram-type blowout preventer comprising
- a body having a central bore extending therethrough and opposed aligned ram guideways extending outward from said central bore,
- a ram in each guideway,
- means for moving said rams into bore closing position and to retracted position out of said bore, and
- means removably secured to each ram to maintain the rams in position in their guideways with their guideway seals in sealing engagement with the interior of their guideways.
A ram-type blowout preventer comprising
- a body having a central bore extending therethrough and opposed aligned ram guideways extending outward from said central bore,
- a ram in each guideway,
- means for moving said rams into bore closing position and to retracted position out of said bore, and
- replaceable means on each of said rams to compensate for wear of said guideways or rams and maintains said rams in their desired position in their guideways.
A ram-type blowout preventer comprising
- a body having a central bore extending therethrough and opposed aligned ram guideways extending outward from said central bore,
- a ram in each guideway,
- means for moving said rams into bore closing position and to retracted position out of said bore, and
- at least one replaceable wear skid secured to each of said rams to maintain the rams in position in their guideways with their guideway seals sealing against the interior of their guideways.
Dependencies are inferred from the claim text.