Blohm + Voss Oil Tools Gmbh

Blohm + Voss Repair Gmbh

Tesco Corporation

Jens Lutzhöft

Jörn Grotherr

Iwo Severin

Christian Hoffmann

Per G Angman

Eiichi Higashi

Hans-Jurgen Ulbrich

Tomoya Inoue

Heiko Junge

Ronaldus R M Rölling

The method is used to produce connecting elements (). The connecting elements () are intended for coupling functional elements for applications in the field of oil drilling technology. The connecting element comprises two end pieces () and at least one spacer () connecting the end pieces to each other. At least one spacer () is connected to at least one of the end pieces () by pressure welding.

Method for producing connecting elements by way of a pressure welding process and connecting element

The handling apparatus is used for positioning and holding of drill pipes. At least, a handling apparatus for the drill pipes is so arranged that it can be positioned both horizontally and vertically and it is equipped with a controllable clamping apparatus for the drill pipes. In the vicinity of the holding apparatus, a centering apparatus is arranged for the drill pipe to be held.

Handling device for pipes

A device for vertically holding pipes, which includes a base element in the form of a segment of a cylinder, a door element pivotably connected to the base element by at least one pivot joint, and a fastener assembly mounted opposite the pivot joint. The fastener assembly has a pivotable catch with a locking profile that, when in the locked state, grips a locking pin from behind. A safety pin and a safety plate are located in the area of the pivotable catch, and, depending on its position, the safety plate releases or closes at least one opening for the safety pin.

Device for vertically holding pipes

An apparatus for vertically supporting pipes in oil production rigs. The apparatus includes an outer frame and a centering device. In the area of an inner side of the outer frame, at least one wedge device is provided for clamping the pipe. The outer frame is connected to the centering device so as to be vertically aligned and facing upwardly. A wedge device may additionally include a positioning device and a carrier provided with at least one wedge.

Apparatus for vertically supporting pipes

An elevator mechanism for use on drilling rigs for hoisting and lowering different sizes and types of pipe. At least two elevator frame sections are interconnected in relative moveable relation for movement between an open position for receiving a section of pipe and a closed position clamping about the pipe. At least two pipe clamping inserts being received in interengaged relation by respective elevator frame sections in a manner resisting upward and downward movement relative to the frame sections. The pipe clamping inserts are mechanically interengaged with the elevator sections to prevent inadvertent disassembly downward and are releaseably locked to secure the inserts against rotation relative to the frame sections. For assembly and disassembly of the inserts relative to the frame sections, the inserts, when unlocked, are rotated for engagement or separation of the mechanically interengaged relation.

Growing community of inventors

Hamburg, Germany

Jens Lutzhöft