Application
HGD-300A sea exploration drilling rig is equipped with a top drive power head and comes with long feed travel. It uses a frequency changer to regulate the rotary speed and is equipped with a 12m high derrick and heave compensator.
It can be used to work under the condition of 100m water depth and wind scale less than 5 grade. It can also be used for exploration drilling and pile hole drilling on river or lake. In addition, the equipment can also be used for drilling pile holes on land.

Features
1) With a frequency changer, the sea exploration drilling rig can adjust the rotary speed steplessly so as to ensure wide speed regulating range. Additionally, it features long feed travel and compact structure. Hence, the drilling machine can meet the demands of drilling in a great variety of complicated stratum.
2) Safety and reliable falling-resistant apparatus of top drive power head can ensure equipment and personal safety.
3) Feed micro-adjusting mechanism of drilling rig can accomplish balanced drilling holes.
4) Our sea exploration drilling rigs can achieve mechanical demounting of drill rods using hydraulic apparatus. This reduces labor intensity and increases drilling efficiency greatly.
5) Moving top drive power head rearward offers the drilling rig a large space for drilling work and makes frequent hoisting and lowering of the drilling rod convenient.
6) Equipped with the advanced bottom sampling device, the drill rig can meet sampling demand in complicated stratum.

Main Technical Specifications
1) Hole diameter: 110 - 600 mm
2) Hole depth: 350 -60 m
3) Rod diameter: 50 mm - 127 mm
4) Rotary speed of top drive power head
Low speed range (forward and reverse): 7-233 r/min
High speed range (forward and reverse): 16-540 r/min
5) Feed travel of top drive power head: 3500 mm
6) Electromotor power of top drive power head: 30 kW
7) Lifting capacity (single wire rope) of main hoist: 30 kN
Lifting capacity (single wire rope) of auxiliary hoist: 20 kN
8) Derrick height: 12 m
Derrick load: 180 kN
9) Mud pump BW-250 mud pump, BW-600 mud pump
10) Hydraulic demounting apparatus
Center hole diameter: 450 mm
Diameter of rod or casing: 50, 127, 178 mm
Demounting torque: 2.2 kNm
11) Overall mounting dimension of main machine part (Length×Width×Height): 2800×1500×5800 mm
12) Weight: 6500 kg

As an experienced sea exploration drilling rig manufacturer in China, we also offer exploration hydraulic core drilling rigs, hydraulic jet-grouting drilling rigs, hydraulic crawler water well drilling rig, hydraulic crawler drilling rig, underground drilling rig, and more.