초록 ▼

An improved ram bore profile for use with a variable bore ram packer designed for use in a standard ram-type blowout preventer used in oil and gas drilling operations is disclosed. The improved ram bore profile in the ram body is a substantially U shaped cutout in the front face of the ram body. The

An improved ram bore profile for use with a variable bore ram packer designed for use in a standard ram-type blowout preventer used in oil and gas drilling operations is disclosed. The improved ram bore profile in the ram body is a substantially U shaped cutout in the front face of the ram body. The U shaped ram bore profile extends between the upper surface and lower surface of the ram body. The substantially U shape of the improved ram bore profile is further characterized by having an arcuate rear portion with a pair of diverging sides 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. The improved ram bore profile is capable of being used with variable bore packers of different configurations.

대표청구항 ▼

[ What is claimed is:] [1.]1. A ram used in a ram blowout preventer for oil and gas drilling operations, comprising:a ram body;said ram body having a front face, said front face having a ram bore profile positioned therein;said ram bore profile substantially U shaped to support a shouldered tubular

[ What is claimed is:] [1.]1. A ram used in a ram blowout preventer for oil and gas drilling operations, comprising:a ram body;said ram body having a front face, said front face having a ram bore profile positioned therein;said ram bore profile substantially U shaped to support a shouldered tubular member within a specified diameter range;said ram body includes a lower body and an upper body, said lower body and said upper body define a ram packer cavity therebetween;said substantially U shaped ram bore profile in said ram body includes a rear portion substantially formed as an arcuate segment, a pair of diverging sides extending from said rear portion of said ram bore profile toward said front face of said ram body at an oblique angle, and;said pair of diverging sides of said ram bore profile connected by arcuate sections to a front throat of said ram bore profile, said front throat having parallel sides that are substantially perpendicular to said front face of said ram body.