Safety Clamps

Description

The Type C Safety Clamp is one of the most valuable tools on the Rig Floor. It helps guard against dropping flush-joint pipe , streamlined drill collars, etc. into the hole while making-up or breaking-out the string. These clamps are ideal as an emergency elevator shoulder for lifting prepacked gravel liners, flush-joint pipe, twisted-off fish and similar items. Which have no shoulders for attaching conventional elevators. The Type C Safety Clamp can be used as a “Slip and Elevator” combination when running large diameter surface casing or used for simplified handing of drilling risers and casing heads during installation. Literally, it has dozen of money and timesaving applications in oilfield work, in addition to giving increased protection against fishing jobs. The Safety Clamp consists of individual links, flexibly hinged together. Each link has a separate tapered slip which acts as a gripping member, much like a tapered rotary slip, and each slip is held in a retracted position on the taper by spring tension. When the clamp is tightened, each small slip takes a firm initial grip on the surface of the pipe. Should the pipe start to fall, or should any load increase occur against the slips, the taper mounting causes each slip to wedge tighter against the surface of the pipe to increase the grip or lock the pipe against further movement. Gripping pressure is always uniform around the pipe so there is a little danger of crushing thin-walled pipe or damage the pipe surface. And, since each link, complete with tapered slip, is interchangeable as a unit, the Safety Clamp is readily adaptable to virtually any diameter. Each link changes the effective gripping diameter of the clamp one each. All parts are made of alloy steel, heat-treated for strength and gripping ability.