Cooper Industries, Inc.

Other

Cameron Iron Works, Inc.

Cooper Cameron Corporation

Eric G Childs

David J McWhorter

Bolie C Williams

Gary R Schaeper

Friedrich E Just

David M Callahan

Leroy E Bartholomew

Bruce G Parker

A ram-type blowout preventer (10) has a front packing arrangement (24) with a packer assembly (28) therein. Packer assembly (28) includes an elastomeric packer member (30) and a recess (46) defined between plates (32) and (34) adjacent elastomeric packer member (30). A replaceable wear insert (60) insertable within recess (46) has projections (74) on opposed parallel sides (66, 68) of insert (60). Projections (74) include a pair of wedge-shaped projecting portions (76, 78) which press into and deform the adjacent contacting sides (48, 50) of elastomeric packer member (30) for retaining insert (60) in position within recess (46) without any separate preformed receptacles or grooves formed in elastomeric packer member (30).

Front packer for ram-type blowout preventer

An improved ram-type blowout preventer having an improved resilient ram packer which includes an upper retainer plate and a lower retainer plate which each have a front face with a central recess therein, a back and sides, resilient end elements bonded between the plates at the sides and having facing surfaces extending from front to back and a resilient insert shaped to be positioned between said plates and between said end elements with sides mating with the shape of the facing surfaces of the end elements.

Blowout preventer with removable packer

The variable bore packer for a ram-type blowout preventer includes a body of resilient packing material with upper and lower plates embedded in the upper and lower surfaces of the body and upper and lower sets of insert segments disposed adjacent the upper and lower plates. The plates have arcuate radial corners at their terminal ends for preventing extrusion. Each of the insert segments includes a pair of insert plates forming an arcuate opening to receive an appropriate sized tubular member and dimensioned to expand and move rearwardly in the resilient packing material upon engagement with a larger diameter tubular member. A polyester rope is embedded in the resilient packing material adjacent the insert segments so as to bond with the resilient packing material. The rope prevents extrusion of the resilient packing material through the gaps between the insert segments and the exterior of the tubular member and also provides reinforcement of the resilient packing material upon the expansion of the resilient packing materials to accommodate larger diameter tubular members.

Variable bore packer for a ram-type blowout preventer

A packer for use with a ram-type blowout preventer which has the capacity to accommodate a plurality of sizes of tubular members extending through the bore of the blowout preventer, the packer having a resilient body to fit the face recess of the ram and a central recess to receive a tubular member, an upper plate positioned in the upper portion of the resilient body, a lower plate positioned in the lower portion of the resilient body, a plurality of metal insert segments positioned between the upper surface of the resilient body and the under surface of the upper plate and around the central recess of the resilient body, the metal insert segments having sufficient length to engage the exterior of a tubular member which is to be engaged and sealed against by the resilient body with the insert segments being selected to seal against a preselected small tubular member diameter which is less than the diameter which could be sealed by the packer without the insert segments. The resilient body is provided with a relief area around its central recess immediately above the upper plate. In another form a second set of insert segments are provided to extend to a smaller diameter than the first set of insert segments.

Variable bore packer for a ram type blowout preventer

A shearing apparatus for installation on a wellhead and having capability of shearing drill collars. The improved apparatus includes a body with a vertical bore therethrough and ram guideways extending laterally from opposite sides of the bore, a pair of rams, each positioned in one of the guideways, each ram including a cutting blade, reciprocating means secured to each ram for moving the rams and their cutting blades into the vertical bore to shear tubular members therein and to retract the rams and cutting blades into the guideways, the reciprocating means having sufficient power to cause the cutting blades to shear large diameter casing and drill collars, and arms secured to the sides of the rams and extending toward the other ram, said arms engaging as the rams are moved toward the bore and providing a force resisting the forces tending to vertically separate the cutting blades during shearing, said arms also substantially filling the space of the guideways outside the vertical bore to prevent the forcing of members being sheared into this space.

Growing community of inventors

Katy, TX, United States of America

Eric G Childs