Shear rams for hydrogen sulfide service

Patent · Tue Mar 28 00:00:00 EST 1978

OSTI ID:5130946

Nguyen, T X.T.

Shear rams shearing drill pipe passing through with blowout preventers encountering hydrogen sulfide are disclosed. The ram bodies are formed of an alloy having an upper hardness level of about Rc22 and the shearing blade and drill string engaging surfaces of the rams are hardfaced with a layer of nickel-based alloys, cobalt-based alloys, and tungsten-based alloys hard enough to shear the drill pipe. The layer of alloy is thin enough to avoid peeling off in use and warping the ram bodies when being welded to them. A number of embodiments and examples of the invention is disclosed.

• Assignee: Rucker Co.
• Patent Number(s): US 4081027
• OSTI ID: 5130946
• Resource Relation: Patent File Date: Filed date 23 Aug 1976
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
DRILL PIPES
SHEAR
HYDROGEN SULFIDES
CONTROL
OIL WELLS
DECOMMISSIONING
BLOWOUT PREVENTERS
CLOSURES
CUTTING TOOLS
DESIGN
HARDNESS
REFRACTORY METALS
CHALCOGENIDES
DRILLING EQUIPMENT
ELEMENTS
EQUIPMENT
HYDROGEN COMPOUNDS
MECHANICAL PROPERTIES
METALS
SULFIDES
SULFUR COMPOUNDS
TOOLS
WELLS
020300* - Petroleum- Drilling & Production