Kemaico Rock Tools Inc.

Concentric Casing Systems With Wings

ODEX systems for DTH hammers that are specially designed to drill and case simultaneously through overburden. These durable overburden drilling tools easily pass through large boulders for pulling lightweight wherein inexpensive casings are incorporated behind them. These overburden drilling tools are easy to remove from the hole/ depth and are provided to our clients in the following technical specifications:

Size: ODEX90, ODEX115, ODEX127, ODEX140, ODEX152, ODEX165, ODEX190

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Component Parts

Related Parts List

No	Items	Description
1	Casing Tube	a.Threaded casing tube, left hand b.Weldable casing tube
2	Drill Pipe	Thread: API(REG/IF)/NC
3	Stabilizer	Thread of stabilizer is with drilling rod
4	Hammer	Thread: API REG
5	Casing shoe	a.Threaded casing shoe, left hand b.Welded casing shoe
6	Wings system	Regard the specification forms as below

Operation Procedure


When drilling starts, the system drives the casing shoe and casing tube down.	When Drilling in overburden formation is finished, reverse rotation and pull the drill string out from the casing tube.	Pour in concrete or continue to next step.	Use normal tools to drill to the desired depth.

Advantages

The material of tool joint is better than casing tube and through heat treatment to ensure connection reliability.

Casing shoe through heat treatment ensures long service life.

Concentric Casing System With Wings


	D		h	H	C	G
Part No.	O.D of casing tube (mm)	I.D of casing tube (mm)	Thickness (mm)	Guide device max.Dia (mm)	Reamed Dia. (mm)	Min J.D of casing shoe (mm)	Qty of the wing	Hammer type	Weight
MDC114/6.5W-02	114	101	6.5	99	125	90	2	DHD3.5/COP34	15
MDC146/10W-02	146	126	10	124	157	117	2	COP44/DHD340 /SD4/QL40	20.3
MDC168/10W-02	168	148	10	146	180	136	2	COP54/DHD350 /SD5/QL50	33.4
MDC178/10W-02	178	158	10	154	195	142	2	COP54/DHD350 /SD5/QL50	38.8
MDC194/10W-02	194	174	10	172	206	160	2	COP54/DHD350 /SD5/QL50	46.4

Concentric Casing Systems With Wings

Product Specification

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