SINODRILLS Eccentric overburden casing drilling systems

Casing drilling, or casing while drilling (CWD) process, is a concept that combining two time-consuming processes, drilling and casing together, performing them at the same time. During the CWD process, powered by DTH hammer, a central piloting bit drives a ring bit to drill a hole wide enough for a casing tube to slide down, drilling and casing processes are therefore performed at the same time.

Eccentric is the most economical solutions because its ingenious reaming wing the bit is retrievable can be used at the next hole. This is particularly design for shallow holes, as is often the case in water well drilling, geothermal wells and for shallow micro-piling work. Odex is ideal for short holes in consolidated overburden. The component of Eccentric system consists of Pilot bits, Reamer bits, Guide device and casing shoe.

When drilling, the reamer bit will rotate out to enlarge the hole which enough for the casing tube slide down behind the reamer. When reached required depth, the drill pipe will drill to the reverse direction and the reamer bit will retract, it is allowing the whole drilling system to pass through the casing.

Features

• Complete types of drilling tools suitable for casing tubes with various diameters;

• Good stability and reliability granted by premium alloy steel material and fine CNC manufacturing process;

• Cost-effectiveness realized by mass production.

Applications

Water well drilling, geothermal well drilling, foundation piling, geological prospecting, etc.

Structure

	01 - Drill Pipe	02 - Guide Sleeve	03 - Steel Casing
	04 - DTH Hammer	05 - Guide Device	06 - Casing Shoe
	07 - Reammer	08 - Pilot Bit	09- Guide Device
	10 - Casing Shoe	11 - Reammer	12 - Pilot bit

GSE-EDS82 Eccentric Drilling System (ODEX82)

GSE-EDS90 Eccentric Drilling System (ODEX90)

GSE-EDS115A Eccentric Drilling System (ODEX115A)

GSE-EDS115B Eccentric Drilling System (ODEX115B)

GSE-EDS140 Eccentric Drilling System (ODEX140)

GSE-EDS145 Eccentric Drilling System (ODEX145)

GSE-EDS147 Eccentric Drilling System (ODEX147)

GSE-EDS165 Eccentric Drilling System (ODEX165)

GSE-EDS180 Eccentric Drilling System (ODEX180)

GSE-EDS190 Eccentric Drilling System (ODEX190)

GSE-EDS230 Eccentric Drilling System (ODEX230)

GSE-EDS240 Eccentric Drilling System (ODEX240)

Please contact our sales team for more specifications.