Drilling Concentric Overburden Drilling Systems Reamer

Concentric Drilling Tools is suitable for drilling water wells , geothermal wells , short miscopies ,medium mini-type grouting hole of building , dam and harbor project .

Inquire Now

Functions and Features

Hammer's percussive energy is transferred through the pilot and ring bits, crushing rock . Part of impact energy advances casing.
Drilling continues to the desired depth in the bedrock using a conventional drilling.

Ring bit and casing shoe assembly is separated, the casing shoe is threaded to casing tube to drilling. Lock the assembly into pilot bit with hammer. The pilot bit's upper shoulder engages the shoulder of the casing shoe.
On completion of drilling and casing , the drill string with pilot bit is retrieved by a slight reverse rotation to unlock the bayonet coupling . The ring bit stays in the hole , and can be recovered only if the casing is retrieved

Product Description

The Overburden Casing System is a specialized technique used in various drilling operations such as water well drilling, anchoring, micro piling, and geothermal engineering. It involves the installation of a casing or pipe through overlying layers of soil, rock, or other materials to provide support and stability during the drilling process.

Product Specifications

Model	Casing O.D.(mm)	Max.O.D.of Guide Device(mm)	Casing Shoe I.D.(mm)	Max.Reaming O.D.(mm)	Hammer Model


CCS-146	146	123.5	116	156	4''
CCS-168	168	146	140	184	5''
CCS-178	178	157	150	194	5''
CCS-183	183	160	152	198	5''
CCS-194	194	178	164	208	6''
CCS-219	219	203	192	234	6-7''
CCS-245	245	217	205	260	6-7''
CCS-273	273	246	233	291	8''
CCS-325	325	297	282	340	8-10''
CCS-377	377	351	332	405	10-12''

View Less

OEM Customization

Drilling Diameter

Depth

Power Type

Explore Drilling Solutions

COMPLETE SOLUTIONS FOR MINING EXPLORATION & ENGINEERING SUPPORT.