There are usually issues when drilling into formations made of loose, unconsolidated material, such as the borehole falling in or collapsing. How may these issues be avoided?
LEANOMS 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.
ODEX Casing Advance System Features:
1. As soon as drilling commences, the reamer swings out and reamers the pilot hole to a width that will allow the casing tube to slide down behind the drill bit assembly.
2. After carefully reversing rotation, the drill bit assembly may be dragged up through the casing after the desired depth has been attained.
3. Use cement grout or another type of sealing agent to seal the bottom of the drill hole where the casing tubes will remain.
4. Using a standard drilling method, drilling proceeds to the required depth in the bedrock.
