Improved ram bore profile for variable bore packer ram in a ram type blowout preventer

摘要

An improved ram bore profile for use with a variable bore ram packer designed for use in a standard ram-type blowout preventer (10) used in oil and gas drilling operations is disclosed. The improved ram bore profile in the ram body (102) is a substantially U-shaped cutout in the front face of the ram body. The U shaped ram bore profile (116) extends between the upper surface and lower surface of the ram body. The substantially U-shaped shape of the improved ram bore profile (116) is further characterized by having an arcuate rear portion (124) with a pair of diverging sides (120) that extend outwardly toward the front face of the ram body to a front throat that intersects perpendicularly the front face of the ram body (102). The improved ram bore profile is capable of being used with variable bore packers of different configurations.