Microtrenching is a minimal-destructive and very fast method of laying communication cables in existing traffic areas. In the process, wide joints are cut into the surfaces with diamond blades. Directly after the cut, ductworks are inserted and then the joint is potted. Time and cost-intensive earthworks at the edge of the traffic areas are thus avoided or minimized.
Focusing on our core competence mechanical engineering, we have successfully planed, assembled and created a variety of customized solutions over the years.
Supporting clients with started projects has also been part of our portfolio.
The Koller Core Saw is used to cut the inner tube with drill core into 900 – 1000 mm sections. The conical drums of the connected lay down frame feeds the inner tube to the saw, where an air-powered diamond or corundum saw blade cuts it into the sections described above. The inner tubes can be made of aluminum alloy, fibreglass or heat-treatable steel. In most cases, aluminum tubes are used, so the equipment is optimised to effectively cut filled-core aluminium tubes. The core saw is suitable for offshore and onshore applications
The KOLLER 3-split Offshore Wireline Unit has been designed for measurements and workover activities with wire capacities above 7,650 m / 25,000 ft. The 3-skid layout is separated in a winch, an operators and a hydraulic power pack container. The hydraulic pump / motor combination guarantees high pull force and speed at any depth.
Trolleys are used for cranless assembly, disassembly and transport of downhole tools or other cylindric parts. For different tool diameters, the distance between the support rollers is adjustable and for different tool lengths, the center bar is stepless extendable. To allow working in an ergonomic position, the height of the trolley can be adjusted. Each trolley is grounded and can be used in ESD (electrostatic discharge) environments out of the box. A turnable tray for tooling equipment is optional available.
KOLLER support tables are made for lay down and work on downhole tools or other cylindrical parts in an ergonomically working position. Since the workpiece is placed on rollers, it can be easily turned to the right position. For lock it in position, the rollers are arrestable. In the single version, the distance between the roller consoles is adjustable. The tables are equipped with a stable elevated tray for tooling equipment, parts or measuring devices. A circumferential edge prevents roll down of parts or drip down of liquids to the workplace.
The bucking unit has been designed to make and break screwed connections with high torques. The unit is a combination of a KOLLER hydraulic vice 220 kN and a hydraulic operated chain tong. For the basic unit without electronic data logger, no electrical supply is required. Both, the hydraulic vice and the tong are supplied by pressure air driven hydraulic power packs. Since the bucking unit is mounted on a solid steel frame with forklift truck pockets, it is transport friendly and can be moved easily on site.
The hydraulic vice have been designed for short-term clamping of downhole tools or other cylindrical workpieces. The 3-point clamping is carried out via a manual spindle and a hydraulically operated prism. The spindle is turned down to the diameter of the workpiece. Then the required clamping force is generated by the hydraulic lifting of the prism. The prism is equipped with specially textured jaws that effectively prevent the workpiece from rotating.
The Koller workbenches have been designed to make and break screwed connections with high torques. To accommodate the high torsional forces, the workbenches have extremely stable and torsionally rigid frames. All available workbench equipment is equipped with dovetail mounting plates and are stepless slidable and positionable as well as turnable for 180 degrees in the bench.
Stands are used for cranless assembly, disassembly and storing of downhole tools or other cylindric parts. For different tool diameters, the distance between the support rollers is adjustable. To allow working in an ergonomic position, the height of the stands can be adjusted. Except type 15-350 non-mag, all stands are fitted with transport rollers for move them without load.