JK730-2 crawler mounted automatic rod exchange DTH drill rig is a hydraulic DTH drill rig. It is equipped with automatic rod changer for rod storage, changing and connecting automatically, as well as hole loc.
[pdf] Truck-Mounted Drill Rigs: Increasingly used in Russia’s geotechnical surveys and water well drilling for quick deployment. Crawler-Mounted Drill Rigs: Preferred in Russia’s rough terrains and mining sites for stability and maneuverability. Market Segmentation by Depth Capacity
[pdf] The first offshore mobile drilling platform was the Breton Rig 20, first operated in 1949. This rig had evolved from the inland drilling barges which were used to drill in marshes and protected waters in up to 10 feet of water. The Breton Rig 20 was 160 feet by 85 feet, and could work in 20 feet water depth.
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