XCMG is a well-known Chinese concern for the production of special equipment. The company's products are distinguished by high technical characteristics, the introduction of global and own innovative developments, high-quality components, mobility and affordable cost. Rotary drilling rigs are one of the most popular equipment. This is a structure based on a special tracked chassis, necessary for the formation of vertical bored piles.
Drilling rigs for driving piles
DRILLING RIG FOR PILES ARE:
- stationary – mounted at the place of work
- mobile (including portable units)
- self-propelled (on tracked or wheeled base)
Our drilling rig on the chassis of a Ural vehicle is equipped not only with drilling attachments, but also with pile driving equipment, which significantly saves time on driving piles, and the technology implemented in this mobile drilling rig allows driving piles even in close proximity to neighboring buildings, without causing any damage. no matter how damaging their foundations are.
- Based on a crane (other equipment with a boom), for example, CO, CO-2. Recommended for installation of bored piles up to 30 meters under the protection of a clay suspension. Disadvantage: low maneuverability.
- Light, medium, tracked and wheeled, for example, various modifications of UBG. Suitable for installation of drilled injection and bored piles, geological and engineering surveys.
- Types of portable drilling rigs: portable modular rigs SBG-PM
- hydroficated machines SBG-PM3 and others
The installations allow the installation of drilling injection wells, including inclined ones. Limitation: shallow immersion depth.
Classification of installations by drilling method
Several drilling methods are used to mechanically destroy rock.
Drilling machines
Auger. The technical parameters of the work involve cutting rock destruction by a drilling mechanism with its simultaneous release to the surface.
Roller ball. Rock destruction occurs by impact, in which the rock is abraded and carried to the surface by an air flow.
The rotary impact drilling method is carried out using machines with an installed pneumatic hammer. Rock ejection occurs due to the operation of additional equipment - a compressor.
Types of drilling rigs used for specific rocks
To drill wells that are technically suitable for a specific type of rock, several types of mechanisms are used.
Rotary drilling rigs. A rotating mechanism is installed at the face of the machine, which cuts out the rock. A weighted crown or chisel is used as a striker.
Rotary-impact installations. Rock cutting is carried out by simultaneous rotation of the face and impact strokes. The chisel or impact blank has a reinforcing amplifier. In some cases, a diamond crown is installed.
Impact (projectile) method. To make holes in loose, sedimentary rocks, a method is used based on impacts on an established face. The percussion drilling method is used to produce holes no larger than 100 m.
Impact drilling diagram
Vibration type structures. Vibration from the generator, which is the secondary machine of the drilling module, is supplied through the double pipe lines. The vibration probe cuts out the rock and throws it upward through adjacent mechanisms.
Fire-jet drilling complex. To install a well in hard, crystalline rocks, gas jets are used to destroy the soil base. The installation is brought into working condition with the help of gas, which produces combustion in the bowels.
Discharge-pulse drilling produces destruction and ejection of rock using electrical pulses. Used for deep work.
Explosive drilling is used for geological exploration in mountain ranges and hard-to-reach places.
Classification by type of drill rotator
Depending on the specifics of the rotational mechanism, structures are divided into several types.
Spindle rotator mechanism. Machines with this modification of the rotator are considered technically obsolete; they are used to complete wells up to 200 m in small industrial enterprises.
The installation of a rotary rotator allows the complex to be operated in sedimentary and rock formations at depths above average.
The movable rotator is a modern technology used in all industries, which makes it possible to produce holes in both ultra-deep and surface drilling.
Types of mobile drilling machines
The family of mobile drilling rigs is large and diverse, but they can be divided into only three groups according to the tasks they perform:
- Small-sized drilling rigs. Designed for small wells, they are drilled mainly in the territories of private houses, and have restrictions on the depth and size of the wells. Suitable for sand drilling. What does a small-sized drilling rig look like:
- For drilling production wells. This group includes all drilling rigs on the chassis of various vehicles and tractors, equipped with powerful drilling equipment, a lifting capacity of up to 300 tons and designed for drilling deep (up to 1000 m or more) wells for oil and gas production.
- For exploration work. This category includes drilling machines on the chassis of various vehicles with mounted drilling equipment designed for drilling shallow and medium-sized wells for the purpose of seismic exploration and work related to engineering surveys (depth up to 25 m, diameter 76–219 mm), water wells, as well as wells for searching for solid minerals and structural wells (depth up to 600 m).
- Drilling wells for technical purposes. This includes all wheeled drilling rigs with attachments designed for drilling leader holes for driving piles and holes for the construction of bored piles, ventilation holes for mining, blast holes in quarries, and for other drilling operations in the field of construction and mining.
Self-propelled drilling rigs
Specifications:
Installation
: heavy-duty five-axle chassis with a 384 kW turbocharged diesel engine.
Broadcast
: Full 18-speed transmission and power take-off, four front tires 445/65R22 with highway tread, twelve two-position rear tires 11x22.5 with highway tread, power steering, air brake, one raised operator's cab with all-round visibility and dual fuel tanks with a capacity of 943 l.
Mast:
vertical working space 15.5 m above the table for making and unscrewing pipes. Maximum working load: 83,916 kg.
Surface drive
: torque 15,818 Nm. Rotation speed 0-100 rpm. The diameter of the flushing channel is 76 mm.
Tool feed
: maximum feeding load 13,608 kg, cable drum feeding speed 84 m/min.
Load capacity and lifting speed
: lifting capacity up to 185,000 lbs. 83,916 kg. Lifting speed up to 42.7 m/min.
Hydraulic adjustable feet
: four adjustable legs with 60 inches (1,524 mm) of travel, two located at the rear of the borehole axis and two behind the loader cabin, all legs are independently adjustable.
Auxiliary winch
: lifting capacity 3628 kg, with hydraulic drive and jib boom. Travel rope 15.8mm, length 61m. Rope winding speed 21.3 m/min.
Gangway
: along the entire length on both sides of the drilling rig. Folds when moving.
Equipment (optional):
Lighting system:
6 fluorescent lamps 1.2 m and two quartz spotlights 500 W installed on the mast.
Water injection pump
: triple plunger pump 152l/min.
Lubrication device
: tank capacity 64.1 l.
Pipe loading device
: device for loading drill pipes and adapter couplings with hydraulic drive.
Drill Pipe Breaker Wrench
: driven by hydraulic cylinder. For diameters from 60mm to 273mm.
Pipe candle holder
: 1,525m tank, 9.1m drill pipe and associated drill pipe couplings (guide ropes).
The engineering company LLC INTECH GmbH / LLC INTECH GmbH offers self-propelled drilling rigs of the SS-300 model:
Specifications:
Installation
: 4×2, 4×4, 6×4 or 6×6 truck, HP and gross laden weight requirements depend on options.
Mast:
mast made of square pipe 305 mm, height 9.9 m above the table for making and unscrewing pipes
Surface drive
: torque 3,073 Nm. 0-215 rpm The diameter of the hole around the standard spindle is 50 mm. The surface drive moves to the left 546 mm from the center of the hole. Travel 7.6 m.
Tool feeding/removal
: supply load up to 6,804 kg, withdrawal load up to 13,608 kg.
Hydraulic drum winch
: lifting force on straight rope with single string harness and empty winch drum 4,536 kg (two-piece single-pulley winch block available). The rope runs along the boom jib to position the drill pipe over the bore hole axis or pipe rack.
Table for making and unscrewing pipes
: sliding, hydraulically operated, provides a 457mm opening) on the frame. Retractable pneumatically driven wrench for loosening drill pipes.
Pipe loading device
: A device for loading one drill pipe.
Pneumatic wrench:
modified wrench for 406mm drill pipes with hydraulic control.
Pipe rack
: Mounted on the right side of the frame. Capacity 12 pcs. drill pipes
Popular options:
Surface drive
: as an option, torque 7907 Nm. 0-138 rpm The bore diameter around the standard spindle is 63.6 mm or, as an option, a dual-motor head designed for a torque of 14119 Nm. and 0-50 rpm and torque 7907 Nm and 0-50 rpm.
Tool feeding/removal
: increased load when feeding up to 7711 kg, increased load when taking out up to 13,608 kg.
Hydraulic drum winch
: lifting force on a straight rope with a single string harness and an empty winch drum 5443 kg (a single pulley block for a two-piece winch is available).
Air compressor
: single-stage screw compressor 8.5 m³/min at 13.8 bar. With hydraulic drive.
Mud pump
: choose from: single or double piston pump 5x6, centrifugal pump 4x3, diaphragm pump or screw pump.
Water injection pump
: selectable: pump 45.4 l/min or pump 68.1 l/min.
Lubrication device
: capacity 26.5 l, with electric drive. Maximum displacement 2.8 l/h.
Mechanical wrench for drill pipes:
hydraulically controlled wrench for making up and unscrewing drill pipes.
Boom remote control devices:
independent control devices located on the assistant's side to control the boom and winch.
Auxiliary winches
: Auxiliary winches available.
Welding machine
: automatic welding machine with hydraulic control, auxiliary power and weatherproof coating.
Engine heater
: 40,000 BTU engine heater.
Weights and dimensions:
Length 10.8 m, width 2.6 m, height 3.8 m.
Approximate weight: depends on options.
Mobile drilling machine
Our company is armed with a powerful mobile drilling machine BM-811 on the chassis of a Ural vehicle. It is capable of drilling wells in soils of categories 1–4, including moisture-saturated and permafrost, even in the presence of lenses and quicksand.
The scope of its use is drilling and piling work during the construction of pile foundations and installation of supports for communication lines and electrical lines. Its dimensions allow movement on any roads without special permission and approvals from the road inspection authorities.
Advantages
In addition to mobility (and therefore the ability to carry out work in any, even difficult terrain), our drilling machine on wheels has a number of other important advantages:
- it can drill several wells from the same place;
- in the same way, without changing the location, the BM-811 can drive several piles;
- capable of drilling 8-meter wells in one pass in just 7-8 minutes (even in frozen soils);
- Drilled wells are characterized by cleanliness and an ideal internal surface.
Thus, the equipment we use ensures quick arrival at the site and deployment on the construction site, prompt execution of work and a relatively low cost.
The cost of using a drilling machine depends on the type of equipment and work conditions.
