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SNR300 drilling rig is a kind of medium and high efficient full hydraulic multifunctional water well drill rig for drilling up to 300m and is used for water well, monitoring wells, engineering of ground-source heat pump air-conditioner, blasting hole, bolting and anchor cable, micro pile etc. Compactness and solidity are the main characteristics of the rig which is designed to work with several drilling method: reverse circulation by mud and by air, down the hole hammer drilling, conventional circulation. It can meet the drilling demand in different geological conditions and other vertical holes.
The rig can be either crawler, trailer or truck mounted and it can be personalized according to the various customers’ requirements. The drilling machine is driven by diesel engine, and rotary head is equipped with international brand low-speed and large-torque motor and gear reducer, feeding system is adopted with advanced motor -chain mechanism and adjusted by double speed. Rotating and feeding system are controlled by hydraulic pilot control which can achieve step-less speed regulation. Breaking out and in drill rod, leveling the whole machine, winch and other auxiliary actions are controlled by hydraulic system. The structure of rig is designed to reasonable, which is easy to operate and maintenance.
The machine is equipped with Cummins engine or electric power as the client’s special request.
Hydraulic rotary head and break in-out clamp device, advanced motor- chain feeding system, and hydraulic winch are reasonable matched.
This rig can be used by two drilling method in set covering layer and stratum soil condition.
The rig can be either crawler, trailer or truck mounted, optional 6*4 or 6*6 heavy truck.
Conveniently equipped with air compressor and DTH hammer, it can be used to drill the hole in rock soil condition by air drilling method.
The rig is adopted with patent technology hydraulic rotating system, mud pump, hydraulic winch, which can be work with circulation drilling method.
Two-speed hydraulic regulation is used in rotating, thrusting, lifting system, which shall make drilling specification more match with well working situation.
Hydraulic system is equipped with separate air-cooled hydraulic oil cooler, also can install water cooler as client's optional in order to ensure hydraulic system work continuously and efficiently under the high temperature weather conditions in different regions.
Four hydraulic support jacks can level rapidly undercarriage to ensure the drilling accuracy. The support jack extension as optional can be easy to make the rig load and unload on truck as Self-loading by itself, which save more transportation cost
| Item | Unit | SNR300 |
|---|---|---|
| Max drilling depth | m | 350 |
| Drilling diameter | mm | 105-305 |
| Air pressure | Mpa | 1.2-3.5 |
| Air consumption | m3/min | 16-55 |
| Rod length | m | 6 |
| Rod diameter | mm | 89 |
| Main shaft pressure | T | 4 |
| Lifting force | T | 20 |
| Fast lifting speed | m/min | 24 |
| Fast forwarding speed | m/min | 47 |
| Max rotary torque | N.m | 8000/4000 |
| Max rotary speed | r/min | 60/120 |
| Big secondary winch lifting force | T | － |
| Small secondary winch lifting force | T | 1.5 |
| Jacks stroke | m | 1.6/1.4 |
| Drilling efficiency | m/h | 10-35 |
| Moving speed | Km/h | 2 |
| Uphill angle | ° | 21 |
| Weight of the rig | T | 8.6 |
| Dimension | m | 6.4*1.85*2.55/6.2*1.85*2.2 |
| Working condition | Unconsolidated formation and Bedrock | |
| Drilling method | Top drive hydraulic rotary and pushing, hammer or mud drilling | |
| Suitable hammer | Medium and high air pressure series | |
| Optional accessories | Mud pump, Centrifugal pump, Generator, Foam pump | |
The SNR300 drilling rig supports a maximum drilling depth of up to 350 meters, with a drilling diameter range of 105 mm to 305 mm.
This multifunctional rig is designed to work with several drilling methods, including reverse circulation by mud and by air, conventional circulation, and down-the-hole (DTH) hammer drilling.
To meet different working environments, the SNR300 can be crawler, trailer, or truck mounted (with optional heavy trucks configurations of 6*4 or 6*6).
The machine standardly comes driven by a diesel engine, but can be equipped with either a Cummins engine or electric power as per the client's special requirements.
The hydraulic system is equipped with a separate air-cooled hydraulic oil cooler, and a water cooler can also be installed as an option to ensure continuous and efficient operation in high-temperature regions.
The four hydraulic support jacks can level the undercarriage rapidly to ensure high drilling accuracy. With optional support jack extensions, the rig can self-load and unload onto trucks, significantly saving transportation costs.
