5 inch - 10 inch Overburden Drilling Systems Down The Hole Drilling for construction

5 inch - 10 inch Overburden Drilling Systems Down The Hole Drilling for construction


Details Description:

Overburden Drilling Systems?

Roschen offers a complete line of tooling for a wide range of overburden drilling applications.

Casing Advancement Systems are designed to simultaneously drill and case in overburden formations. Hole Products offers systems from leading manufacturers including Mincon?, Mitsubishi, and Sandvik?.
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In addition, we offer casing hammers and jacks, cable tool and rotary style drive shoes, dual rotary shoes, and a variety of overburden drilling accessories.
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No seeing what you need? Need to inquire about additional product availability? Please contact a Hole Products representative for assistance.
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Pilot bit is well designed to offer good drilling efficiency.

Optimization design for each part reduces the probability of accident.

Strengthening quality of stable pole driller extends the drilling life and improve cost-performance ratio.

As much as 90% of the land surface of the earth is covered with loose, unconsolidated material such as soil, clay, silt, sand, gravel and boulders, which varies in depth from a few centimetres to hundreds of meters.
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Drilling through this so-called overburden is often problematic, due to the tendency of the earth to cave in behind the drill bit.
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This makes it difficult to retrieve the drill string after the hole has been drilled. In practice, the bore hole is often lost before a casing tube can be inserted to support it.
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Other problems are caused by cavities or porous ground, which interfere with the circulation of the flushing medium and prevent the drill cuttings from being flushed out of the hole.
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In places where overburden strata are mixed, or when their drillability is unknown, it is difficult for the driller to decide what tools to use in order to get the best overall results without risking the loss of equipment in the hole.
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The best solution for dealing with such problems is to use ODEX equipment.

Applications:

Overburden drilling style: ODEX-eccentric, Symmetrix-concentric

Overburden drilling hole Diameter: ODEX-eccentric: 114-324mm?????????????????????????????????????????????????

Symmetrix-concentric:? 114-610mm
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Features:

????? Pilot bit is well designed to offer good drilling efficiency.

????? Optimization design for each part reduces the probability of accident.

????? Strengthening quality of stable pole driller extends the drilling life and improve cost-4,performance ratio.
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