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     Core Drilling Rig

 
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TBW coredrilling
 
Technical Description BHS - TC - Core Drilling Rig:

• DESCRIPTION: BHS, TC-40, is a Tractor Mounted Top drive all Hydraulically operated core Drilling Rig extracting main power from Tractor Engine, is designed for Geo-technical investigation (Geological survey), soil sampling application capable of drilling to a maximum depth of 150 Mt. (500 feet):

Core Drilling   SI   FPS

Drilling Sizes & Drilling Depths

 

 

 

 

NW Drilling (core 54.0 mm)

 

150 m

 

500 feet

NX Casting (88.9 mm Drilling)

 

50 m

  150 feet
         
Mast Structure:
Strudy structural channel type Mast of electrically welded construction, main members made out of heavy duty structural steel channels reinforced with suitable cross members, so that it will be strong enough to withstand the varying drilling loads.

Mast Length  

5500 mm

Rotary Head Travel

 

4500 mm

Centraliser Opening

 

200 mm

Raising & Lowering

 

With Hydraulic cylinder

Max. Rod handling Capacity

 

3 m

     
Tophead Rotary Drive:
Heavy-duty Hydraulic driven Top head Rotation unit having infinitely variable speed (0 to 500rpm) will be provided. This unit travels on the Mast and is of sturdy construction to absorb sudden & varying shock loads generally encountered during drilling operations.

Output Speed

 

0-500 rpm

Output Torque

 

0-500 rpm

Types of Gears

 

Spur Gears

Drive Motor type

 

OMT 200 / Orbital

No. of Motors

 

01 No.

     
Feed System:
Feed system is provided with adequate travel for handling Drill Pipes & Casing pipes upto 6 Mt. long. The feed system is actuated by a suitable Hydraulic cylinder with wire rope and pulley arrangement. The feed system has the following capabilities:

The feed system has the following capabilies.

Max. Pull Up Force

 

4500 kgf

Max. Pull Down Force

 

2400 kgf

Max. Pull Up Speed

 

40 m/min

Max. Pull Down Speed

 

65 m/min

Reeving Ratio (Wire Rope)

 

1:3

     
The feed system will be incorporated with Hold back arrangement to control and limit weight on bit, rapid and slow feed arrangement to suit the variable ground conditions.

Hydraulic System:

Max. Operating pressure

 

160 kg/cm2

Hydraulic Tank Capacity

 

300 Lts

Filtration (Nom.) Return Line

 

10 microns

Hydraulic Oil Cooler

 

40 GPM (Fin type Oil to Air)

     
Prime Mover:
Power required for the rig Hydraulics shall be drawn from the tractor engine through the out put shaft (PTO).

Stabilizers (Jacks):
System consists of three Hydraulic Leveling Jacks with 'Reverse flow restricted valves to ensure safe operation. Two numbers are at the front (Operator side) of the rig controlled by two separate valves and one jack at the rear side of the rig controlled by a single valve.

Type

 

210 kg/cm2

No. of Jacks

 

550

     
Breakout Wrench:
The Drill Rig is equipped with Hydraulic breakout wrench for tightening and loosing of Drill pipes and The Hammer.

Cylinder Bore Diameter

 

80 mm

 

3 Inch

Stroke

 

300 mm

 

12 Inch

         
Water Injection Pump:
Triplex plunger pump shall be used for DTH Drilling.

Capacity

 

36 lpm

Max Pressure

 

40 bar

     
Winch Assembly:
Hydraulically operated wire line winch is mounted on mast to handle the Casing Pipes, Drill pipes and other handling tools.

Line Pull (Bare Drum)

 

800 kgf

Line Speed (Bare Drum)

 

40 mt / min

     
Air Compressor:
Air compressor of suitable capacity mentioned can be used for carrasying out the DTH drilling activity.

Air Compressor

 

450 cfm / 150 psi

Make

 

Reputed make

     
Note: The compressor shall be mounted on separate two wheel single dummy axle waith mechanical stabilizers quantity one number.

Air Line Lubricator:
Air line lubricator of capacity mentioned below shall be mounted for the supply of lubricating Oil to the hammer.

Capacity

 

600 cfm / 200 psi

Make

 

Reputed make

 
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