Eccentric Overburden Drilling System Consist of Guide device, Casing shoe, Reamer, Pilot bit, Guide sleeve and Locking kits

Model	Casing sizes		Min. inner dia. Of casing shoe	Reaming Dia.	Hammer shank	Drill pipe
	Max. OD	Min. ID				Thread	O.D.	Wrench Flat
ODEX90	115	102	90	123	DHD3.5/COP32/QL30	API 2 3/8" REG	76	65
ODEX115	142	128	115	152	DHD340/COP44/SD4/QL40/M40	API 2 3/8" REG	76	65
ODEX140	171	157	140	187	DHD350R/COP54/SD5/QL50/M50	API 2 3/8" REG	89	65
ODEX165	196	183	165	211	DHD360/COP64/SD6/QL60/M60	API 2 3/8" REG	114	95
ODEX190	222	205	190	237	DHD360/COP64/SD6/QL60/M60	API 3 1/2" REG	114	95
ODEX240	273	261	240	308	DHD380/COP84/SD8/QL80/M80	API 3 1/2" REG	114	95
ODEX280	324	305	280	378	DHD1120/SD10/NUMA100	API 4 1/2" REG	114	95

Symmetric Casing Drilling System consists of three parts: Polit bit, Casing shoe and Ring bit.

Casing Tube OD(mm)	Casing Tube ID(mm)	Reamed Dia(mm)	Casing Shoe ID(mm)	Polit bit Dia(mm)	Hammer Type
108	93-99	118	86	77	DHD3.5/QL30
114	102-104	127	91	82	DHD3.5/QL30
127	115-117	136	101	92	DHD3.5/QL30
140	124-128	152	117	105	DHD340/SD4/QL40/M40
146	130-134	154	117	105	DHD340/SD4/QL40/M40
168	148-156	185	140	125	DHD350/SD5/QL50/M50
178	158-166	195	150	140	DHD350/SD5/QL50/M50
183	163-171	193	154	144	DHD350/SD5/QL50/M50
194	174-182	211	166	150	DHD360/SD6/QL60/M60
219	199-207	237	193	165	DHD360/SD6/QL60/M60
245	225-233	260	210	190	DHD380/SD8/QL80/M80
273	253-257	308	241	220	DHD380/SD8/QL80/M80
325	305-309	348	281	205	SD10/NUMA100
406	382-388	440	364	340	SD10/NUMA100

Concentric casing system with block consists of three parts: Guide Device and Block.

Casing Tube OD(mm)	Casing Tube ID(mm)	Reamed Dia(mm)	Casing Shoe ID(mm)	Hammer Type
168	149-155	184	140	DHD350/SD5/QL50/MISSION50
178	159-165	194	150	DHD350/SD5/QL50/MISSION50
193	173-180	206	164	DHD360/SD6/QL60/MISSION60
219	199-206	234	182	DHD360/SD6/QL60/MISSION60
244	224-260	260	210	DHD380/SD8/QL80/MISSION80
273	251-257	305	240	DHD380/SD8/QL80/MISSION80
323	301-310	348	284	SD10/NUMA100
406	382-388	440	364	SD10/NUMA100
457	433-439	488	413	SD12/NUMA120/DHD1120
508	484-490	538	464	SD12/NUMA120/DHD1120