Xiamen Bestlink Factory Co., Ltd.  

Product Name: Overburder Eccentric Casing Drilling System Odex for Water Well Model NO.: ODEX Condition: New Certification: ISO9001: 2000 Application: Tunnel Boring Machine?TBM? Type: Bearing Usage: Water Well, Geothermal Drilling Trademark: BESTlink Transport Package: Wooden Package Specification: steel Origin: China HS Code: 82071990 Product Description Overburder Eccentric Casing Drilling System ODEX for Water WellIn the projects of drilling,drillers often meet with problems due to the loose land formation.These may cause troubles such as difficulty in drilling down,collapse of holes,damage of drilling tools,etc.To solve the problems,the best way is to use (ODEX)Overburden Drilling System which can prevent holes and drilling tools from damage,and support the holes by casing tubes.Application:Drilling of waterwells, geothermal wells, short micro piles, medium mini-type grouting hole of building, dam and harbour project etc.General Introduction:1.drill in overburden unstable rock2.one step to drill and follow casing3.flexible to open or close4.effecient below 300mmDesign Principles:Make the casing follow easy and the equipment and operation simpleOutstanding AdvantagesSimple structure,simple operation,reliable quality,retrievable drilling tools,long service life.Raw Material:Steel:first class special alloy steel with high strength, heat resistance and wearableCarbide:The best tungsten carbides from China are commonly applied.Tungsten carbide from European is also available.Operation Procedure:1. When drilling starts, the 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 reversed 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 conventional drill string.ModelOuter Dia. of Casing Tube(mm)Inner Dia. of Casing Tube(mm)Wall thickness of casing(mm)Reamed Dia.(mm)Min. Inner Dia.of Casing Shoe(mm)Hammer TypeDrill Pipes(mm)Weight(kg)ODEX for DTH DrillingODEX901151026.512592COP32/COP34/DHD3.5/BR3/MACH3037612.5ODEX1151401286157117COP44/DHD340/MACH44/MISSION40/SD4/XL4/QL4076/8922ODEX1401681575.5182142COP54/DHD350/MACH50/MISSION50/SD5/QL508938ODEX1651941835.5206166COP62/COP64/DHD360/MISSION60/SD6/XL6/QL60/TD15011461.5ODEX1902222058.523419111483ODEX2402732606.5305241114136.5ODEX280323297.612.7338281SD10/NUMA100/TH10114184Factory site and packing:Wooden package for the eccentric casing system