The versatility of this unique drilling rig makes it one of the most efficient and cost effective methods for drilling holes in difficult formations. Using this drilling technique the DR rig has successfully operated in locations where casing hammers and reamers have been. When the casing is advanced ahead of the bit or air hammer, cross contamination is minimized and borehole stability problems associated with artesian conditions are eliminated. The lower rotary drive unit operates totally independently from the top drive rotary head. A top drive rotary head simultaneously handles a drill string equipped with a down-the-hole hammer, drag bit or rolling cone rock bit to drill inside or ahead through the casing. Casing can be simply rotated and pulled back out of the hole to set screens, full-length plastic liners or salvage casing from abandonments. A patented carbide studded shoe, welded to the bottom casing joint enables the casing to cut its way through the overburden. Rotational forces are effectively transmitted to the casing through power operated jaws. The DR rig utilizes a lower rotary drive unit to advance casing through unconsolidated overburden. DR rigs are presently operating very successfully in Africa, Australia, Canada, Europe, Mexico, Korea, Taiwan, South America and U.S.A. During the fast few years, Barber Industries has introduced new design features into its DR rig (Dual Rotary rig) and perfected the dual rotary concept for use in the water well and construction industries worldwide. It doesn't matter if you want to build a dragster, fire engine, forklift, helicopter, plane or even a tank: It will drive, break and function as you would expect it. The dual rotary technique is presently being used successfully where unconsolidated formations (sand, gravel, and boulders) make it difficult to drill a cased hole using conventional drilling techniques. Brick Rigs - Brick Rigs allows you to build many kinds of vehicles from a variety of bricks and experience their dynamic driving and destruction physics in a sandbox environment. We can work with support truck and drilling rig back to back, or side to side. 30+ games like Brick Rigs - SteamPeek Indie friendly game discovery If youd like to promote your game here just send a letter to m Brick Rigs Search Include tags Exclude tags Top similar games like Brick Rigs: Updated on 2023. Our side loading mechanism on the DR-12, as well as the support truck equipped with a crane for our DR-24 offers great versatility on site ser-ups.
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