Intelligent Drilling Technology And Engineering

1. Soft coal pneumatic screw drill tool directional drilling technology and equipment

Aiming at the problem that it is difficult to form holes in the crushed soft coal seams underground with medium-pressure drilling under medium pressure, and it is difficult to form holes in directional drilling with hydraulic screw drilling tools, we independently innovated and developed pneumatic directional drilling technology and equipment for crushed soft coal seams, and used pneumatic screw drilling tools to drill holes. The bottom power drilling tool is equipped with a measurement-while-drilling system for directional drilling so that the gas drainage borehole extends along the soft coal seam. After the hole is drilled, the screen hole completion technology is used to install the screen tube in the entire hole section. This technology uses an underground explosion-proof air compressor or nitrogen generator to provide a power source and uses the generated compressed gas to drive the pneumatic screw drilling tool to rotate for drilling and slag removal.

Soft Coal Pneumatic Screw Drill Directional Drilling Equipment

Soft Coal Directional Drilling Screen Hole Completion Drilling Tool

Compressed gas (air or nitrogen) is used to drive screw drilling tools and slag discharge, and it has directional drilling technology and compressed air drilling technology; the drill tool assembly adopts an external spiral structure to improve the slag discharge capacity; the measurement system while drilling can use electromagnetic wave wireless tracking drilling measurement or orifice power supply measurement; multifunctional dust removal pump truck integrates orifice dust removal, screw drilling tool oil mist lubrication, pressure air monitoring, crawler self-propelled and other functions; directional drilling long-distance screen completion technology is used to ensure directionality The hole goes all the way down the screen tube.

2. Complete set of integrated technology and equipment for drilling, punching, and protection

It is suitable for soft and low-permeability coal seams (f <0.5). When constructing drilling through layers, along layers, and forward exploration for pressure relief, it can realize drilling, punching, and hole creation in one drill, and achieves the goal of “drilling in, punching out, and protecting” provides technical support for gas control in soft and low-permeability coal seams.

Integrated hydraulic punching device for drilling and punching: By switching the drilling/caving function and the controllable opening and closing function of the central channel, drilling, hydraulic punching, and hole protection while drilling is realized in one drilling operation, which simplifies the construction process. Improved construction efficiency and ensured continuous and efficient extraction of borehole gas;

High-power drilling rig: The overall size of the whole machine is small, the maximum width is only 1.05m, the transportation height is less than 1.85m, and the minimum opening height is 1.24m. It can carry outside construction and front exploration construction in the tunnel along the groove, meeting various types of cave construction. Process requirements;

Large flow pump truck: The motor directly drives the water pump with high efficiency, large water pump flow, and the pump volume can be adjusted steplessly. The waterway system adopts a multi-stage filtration design, and the filter element replacement or cleaning can be completed online;

Solid-liquid separator: The vibrating screen is used to separate the slag returned from cave formation, which facilitates transfer and transportation. The measuring hopper has a large capacity and a high degree of mechanization, which facilitates the measurement of slag returned from cave creation.

3. Rapid hole-forming technology and equipment for underground coal mines through holes of 500mm and above

The rapid hole-forming technology and equipment for underground coal mines through holes of 500mm and above is a new technology and complete set of equipment in recent years for the construction of passages such as pseudo-high extraction tunnels, coal bunker counter-eyes, and contact tunnels after large-diameter drilling has been replaced. This technological innovation has developed the ZDY22000LK high-power remote-controlled drilling rig, BLY500/8K multi-functional remote-controlled mud pump truck, detachable large-diameter centralizer and supporting special drilling tools, which can construct large-diameter through holes of 500mm and above, and the through-hole length can reach 100m. This technology can realize two construction methods: guided construction and pull-back construction, opening up a new technical approach for the construction of some tunnels in coal mine production. It can play its outstanding advantages in gas drainage, tunnel ventilation, emergency rescue, and underground pipeline laying., is an efficient process technology that saves costs and ensures safe production.

Wireless remote-control operation makes for easy observation and safer construction; the rated torque of the drilling rig reaches 22000N·m, which has higher construction efficiency; the new overall flip-type amplitude modulation device has a wide adjustment range, is stable and more reliable; the remote-controlled multi-functional pump truck has hoisting function, adding drill pipe is more labor-saving; the detachable large-diameter centralizer makes construction more convenient.

4. Screen tube completion technology and equipment for underground coal mine gas extraction holes

The screen tube completion technology and equipment for underground coal mine gas drainage holes is a complete set of technology and equipment developed for drilling gas drainage holes in soft coal seams in underground coal mines, protecting the holes after hole formation, and improving the gas drainage rate. This technology uses patented products such as a large through-hole wide-blade auger drill pipe, an inner core openable and closable drill bit, and a screen tube hole bottom suspension device to ensure the hole formation rate and hole protection screen tube penetration depth and improve the gas drainage rate and efficiency.

5. Technology and equipment for high-level large-diameter directional long drilling on the roof

The high-level large-diameter directional drilling holes on the roof are arranged in the predetermined fracture zone of the roof to efficiently extract gas from the goaf area and mining-affected area of the working face. It can replace high-drainage tunnels, with small engineering volumes and long effective hole sections. We have developed a high-power directional drilling rig and supporting equipment to achieve efficient drilling of large-diameter boreholes with a hole depth of 1,000m, which can effectively solve the problems of air return and upper corner gas exceeding limits during mining of the working face, and realize work safe and efficient mining.

Pilot directional hole + secondary reaming = high-level large-diameter directional drilling in the roof; multi-power directional drilling in hard rock; directional drilling with special-shaped drilling tools in broken formations and composite slag removal; Φ200mm dual-stage, double-speed large-diameter primary reaming; large-diameter steel screen tube completed.

6. Hard rock high-efficiency hole-forming technology and equipment

high-efficiency hole-forming technology for hard rock uses medium and high-pressure pneumatic impactors or high-pressure hydraulic impactors to achieve high-efficiency drilling in hard rock through the impact rotary drilling method. The supportingly developed high-low dual-speed mode drilling rig can switch between high and low speeds, which can effectively solve the problem of low drilling efficiency in hard rock.

7. Multi-branch directional drilling in complex formations and geological anomaly exploration technology

Geological anomalies are the main hidden disaster-causing factors in mine disasters. The directional drilling main hole construction technology is used to carry out long-distance advance exploration to determine whether geological anomalies exist. The sidetracking branch technology is used to construct branch boreholes at multiple angles to carry out regional inspections. Coverage, using measurement-while-drilling directional drilling technology to accurately measure and control the spatial location of boreholes and geological anomalies, using drilling characteristics and lithological characteristics to identify geological anomalies, and combining geological anomaly identification and trajectory measurement to establish geological models and realize geological anomalies. The body is accurately positioned and treated using exploratory directional drilling.

8. Coal mine underground directional drilling digital platform

The digital platform for underground directional drilling in coal mines uses digital twin simulation technology to build a high-simulation working environment for measurement while drilling in a virtual environment. It connects with the real work data at the operation site to realize the visualization of basic data charts of the drilling rig's measurement data while drilling, and the twin operation environment simulation and mechanism. Logical analysis intelligence and other functions.

Three-dimensional display: Display drilling and drilling field construction status in the form of graphics charts to manage the progress of drilling construction projects;

Real-time acquisition: real-time display of data from the measurement while drilling system and video monitoring information of the drilling process;

Digital twin: Three-dimensional visualization technology realizes digital twins of different drilling tools and measurement systems;

Data traceability: Data records of the drilling process facilitate subsequent maintenance query, analysis, and traceability;

Report export: Select different data templates to export construction information reports according to needs;

Information focus: According to different user needs, focus on displaying information that is highly relevant to their work attributes;

Intelligent processing: Analyze and judge drilling data to provide early warning information, program suggestions, and decision-making basis.