Walking systems, or "walkers" are machines that move very large loads, very precisely, in any direction. Walking draglines were some of the earliest machines to utilize walking systems to allow the enormous machines to move. Walkers go through a basic cycle similar to how a person walks.
The walker operator controls hydraulic valves that control the operation of the walking machine. Entro Walking Systems use hydraulic jacks, travel cylinders, and roller chain load skates on a steel foot to move exceptionally large loads one step at a time. First you move the feet in the direction that you want to travel. Then you actuate the lift cylinders to lift the load up onto the feet. After lifting the load onto the walking feet, you actuate the travel mechanism to move forward on top of the feet. When you reach the end of the foot, you stop the travel mechanism, and then lower the jacks to set down the load and lift the lift feet up off of the ground. Once the feet are unloaded again, the travel mechanism is used to move the feet forward for another step to repeat the cycle.
Entro has been designing walking systems for over 20 years. Our patented walking machines have been used on hundreds of structures, with loads from 50,000 pounds to well in excess of 12 million pounds.
The walking machinery is the heart of the system and includes all of the moving parts, from the jack down to the foot. Different types of walking machinery are suited to different applications, and Entro can help you find the system that is best for your application.
Boasting a doubled walking speed from its extra stroke, while maintaining the wide array of rig mounting options of its proven counterpart, the X-Swing is our most capable walking foot yet. MORE
Pushing the limits of compact design, the CompacJac still matches its bigger siblings in capability. Despite its size, it employs a 24” travel stroke, travel in ANY DIRECTION, spin mode, 12” lift stroke, and our standard lifting capacities. MORE
Entro King-Pin walkers are currently in use in drilling rigs throughout the world. The Super Stomper is the next evolution of the design. Multiple jack cylinders operate over a single large walking foot. MORE
Entro's designs mitigate potential overloads on the machinery that has caused similar machinery by other manufacturers to fail prematurely. MORE
Uniquely suited to rigs where conventional walking feet do not perform well. The patented design allows a large sized foot to be placed in confined areas while still allowing the rig to move in ANY DIRECTION. MORE
Pushing the envelope of walking system technology, the Super-X Walking Foot combines Entro's patented X-Swing mechanism with their Super-Stomper walking foot to produce a walking system that's suited for the most demanding jobs in the world. MORE
Smaller capacity walkers designed to move smaller loads that are still too heavy to move without specialized machines. Mud tanks, support building and pipe machines can all be mobilized efficiently. MORE
The optional Autowalk and Autolift systems allows a single operator to steer all of the walking feet with a wireless remote control. This eliminates the need for personnel to manually steer the walking feet, improving safety and efficiency. MORE
The machinery can be mounted in different structural configurations. Typically, Entro walking machinery is configured to either pin onto a structure, or is permanently mounted into a structural frame that supports the load to be moved. The support frames and attachments vary depending upon the customers' structures.
Designed to fit virtually any land drilling rig substructure. They are primarily suited to moving a substructure with umbilical connections back to the rig utilities. MORE
Designed to efficiently mobilize land-based, box-on-box drilling rigs for hole-to-hole moves. The Entro system fits large walking feet into existing sub designs and still maintains the ability to move in ANY DIRECTION. MORE
Designed to be used with single piece substructures with below grade well completions. These Low Pro Walkers allow the drilling contractor to move not only a substructure with full setback, but also the water tank and mud tanks as well. MORE
Designed to be used with single piece substructures with above ground completions. The StrongBack allows the substructure to walk with full set back and the water and mud tanks with fluids in the tanks. MORE