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Overburden Tools

Dynadrill O-Dex systems for DTH hammers are designed to drill and case simultaneously through overburden, passing easily through large boulders, pulling lightweight, inexpensive casings behind them. On reaching the bedrock or required depth, the drillstring is removed easily from the hole, leaving the casings in place. Drilling into the bedrock can then be continued using a normal drill bit.

O.DEX Product Range :

O-Dex type	Casing, Recom.	Min. Wall	Max. Drill bit	Reaming
	Size MM Max OD/Min. ID	Thickness mm	Diameter MM	Diameter MM
90	115/102	5	90	123
115	142/128	5	115	152
140	171/157	5	140	187
165	196/183	5,5	165	212
180	219/194	6,3	180	232
190	222/205	6,3	190	237
215	257/241	6,3	215	278
230	270/250	6,3	230	286
240	273/260	6,3	240	306
280	327/305	7,1	280	370

System	Description	Weight		Quantity
		Kg	lb
O.DEX - 90	Guide Device Prithvi 30	7	16	1
	Guide Device IR 3.5	7	16	1
	Pilot Bit	3.6	7.9	1
	Eccentric Reamer	1,4	3	1
	Casing Shoe	1,1	2.4	1
	Guide Sleeve 2 3/8" Box API Reg; wrench flat. 65mm	6	13	1
O.DEX - 115	Guide Device Prithvi 40	12	27	1
	Guide Device Mission 40	12	27	1
	Guide Device IR 340	12	27	1
	Pilot Bit	8	17	1
	Eccentric Reamer	2,6	5.7	1
	Casing Shoe	1,6	35	1
	Guide Sleeve wrench flat 65mm, 2 3/8" Box & Pin API Reg;	8,3	18.3	1
O.DEX - 140	Guide Device Prithvi 50	22	49	1
	Guide Device Mission 50	22	49	1
	Guide Device IR 350	21	45	1
	Pilot Bit	11	24	1
	Eccentric Reamer wear-protection buttons, 189mm reaming dia	4	4	1
	Eccentric Reamer wear-protection buttons, 197mm reaming dia	4	4	1
	Casing Shoe	2,4	5.3	1
	Guide Sleeve wrench flat 95mm, 3 1/2" API Reg;	16,4	36.1	1
O.DEX - 165	Guide Device Prilhvi 60	34	74	1
	Guide Device Mission 60/BOW	34	74	1
	Guide Device Silverdril SD 60	36	79	1
	Guide Device IR 360	34	74	1
	Guide Device QL 60	34	74	1
	Pilot Bit	17	38	1
	Eccentric Reamer	7	15	1
	Casing Shoe	3,2	7	1
	Guide Sleeve wrench flat 95mm, 3 1/2" API Reg.Box & Pin	22	47	1
O.DEX - 180	Guide Device Prithvi 60	44	97	1
	Guide Device Mission 60	44	97	1
	Guide Device Sitverdril SD 60	44	97	1
	Guide Device IR 360	44	97	1
	Guide Device QL 60	44	97	1
	Pilot Bit	24	52	1
	Eccentric Reamer	10	22	1
	Casing Shoe	4	9	1
	Guide Sleeve API 3 112 API Reg.Box & Pin	25	55	1
O.DEX - 190	Guide Device Prithvi 80	47	103	1
	Guide Device Mission 85	47	103	1
	Guide Device Silverdril SD 8	47	103	1
	Guide Device IR 380	47	103	1
	Guide Device OL 380	47	103	1
	PilolBit	29	64	1
	Eccentric Reamer	10	22	1
	Casing Shoe	4,1	9	1
	Guide Sleeve API 4 1I2 API Reg.Box & Pin	25	55	1
O.DEX - 240	Guide Device Prithvi 80	67	148	1
	Guide Device Mission 85	67	148	1
	Guide Device Silverdril SD	67	148	1
	Guide Device IR 380	67	148	1
	Guide Device OL 80	67	148	1
	Pilot Bit	46	102	1
	Eccentric Reamer	18	39	1
	Casing Shoe	7	15	1
	Guide Sleeve API 4 112" API Reg. Box & Pin	40	89	1
O.DEX - 280	Guide Device Prithvi 100	160	353	1
	Guide Device Silverdril SD 10	160	353	1
	Guide Device Numa 100	160	353	1
	Pilot Bit	88	194	1
	Eccentric Reamer	43	95	1
	Casing Shoe	15	33	1