| |
Core Drilling Rig |
|
| |
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 |
|
|
| |
|
| |
|
|
|
|
