Eccentric casing system

Superdrill has ODEX Casing Advance System, which is suitable for strata with silt sand or tiny pebbles, after years of field testing and research. This ODEX Casing Advance System can advance the casing simply for a depth of up to 30 meters and is retrievable with a long service life because to its straightforward structure, simple operation, and dependable performance. Make the casing follow simple, the equipment simple, the operation simple, and the quality, reliability, retrievability, and longevity of the drilling tools.

ODEX Casing Advance System In the sector of drilling mining and water wells internationally, DTH Bit is particularly well-liked. It is a down-hole air hammer system made to move drilling casing forward. The eccentric bit can be removed after reaching the required depth, leaving the casing in situ for sample or installations. The casing is removed when the borehole is finished and put to new use.

The  ODEX Casing Advance System makes a drilled hole forward of the casing's bottom using an eccentric under reamer. A percussive force is then given to either the top or bottom of the casing to advance it simultaneously. The drill cuttings typically travel up the interior of the casing in the annular gap between the casing ID and the drill rod OD when the hole is progressed. In overburden soils with boulders or gravel layers present, or when layers of rock need to be penetrated, the Odex technique is quite successful. Additionally, this technique causes some vibration in confined and superficial soils.

Eccentric casing sysrem(ODEX) Working procedure
1.When drilling starts, the ODEX reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly.	2 When the required depth is reached, rotation is rever,sed carefully, whereupon the reamer swings in, allowing the drill bit assembly to be pulled up through the casing.	3.Casing tubes that are to be left in the drill hole should be sealed at the bottom of the hole by means of cement grout or some other sealing agent.	4.Drilling continues to the desired depth in the bedrock using a conven tional drillstring.