Eccentric Casing System

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Overburden drilling system

Looking for an efficient and economical solution for overburden drilling? Look no further than our eccentric casing system.

This specialized drilling tool is equipped with an ejectable eccentric bit that can expand to the required diameter at the bottom of the hole.

In most geological conditions, the eccentric casing system is the most cost-effective way for well drilling and geothermal drilling. It is widely used in micro-pile construction, dam and port development, and small-scale grouting operations, making it a popular choice among construction teams. Thanks to its cleverly designed winged expansion bit, the drill head can be recovered and reused, making it more ideal than other similar drilling tools for shallow hole operations.

Specifications

Model	Outer diameter (mm)	Inner diameter (mm)	Reamed diameter (mm)	Inner diameter of casing shoe (mm)	Hammer type	Drill pipe (mm)
ODEX80	108	93-99	118	87	3 inch hammer	76
ODEX90	114	102-108	123	93	3 inch hammer	76
ODEX100	127	114-117	136	102	3 inch hammer	76
ODEX114	140	124-128	152	115	4 inch hammer	76
ODEX120	146	130-134	154	121	4 & 5 inch hammer	76
ODEX140	168	148-156	185	140	5 inch hammer	89
ODEX150	178	158-166	195	150	5 inch hammer	89
ODEX165	194	174-182	211	166	6 inch hammer	114
ODEX190	219	199-207	237	193	6 inch hammer	114
ODEX210	245	225-233	260	210	8 inch hammer	114
ODEX240	273	253-257	308	241	8 inch hammer	114
ODEX280	325	305-309	378	281	8 inch hammer	114

Features

Fast debris removal and high drilling rates, especially in stable rock formations such as basalt.
Easy sampling of soil and groundwater during drilling operations.
Capable of measuring the yield strength of selected rock formations at depth.
Suitable for drilling in unstable loose rock formations.