CN219472092U - Hydraulic slotting simulation test equipment for extraction drilling - Google Patents
Hydraulic slotting simulation test equipment for extraction drilling Download PDFInfo
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- CN219472092U CN219472092U CN202320543623.8U CN202320543623U CN219472092U CN 219472092 U CN219472092 U CN 219472092U CN 202320543623 U CN202320543623 U CN 202320543623U CN 219472092 U CN219472092 U CN 219472092U
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Abstract
The utility model provides extraction drilling hydraulic slotting simulation test equipment, which comprises a coal seam simulation unit, a directional drilling area hydraulic slotting unit and a data processing unit; the coal seam simulation unit comprises a test box and a gas simulation inflation system connected with the test box, a coal and rock simulation material is paved in the test box, a movable box cover is arranged at the top of the test box, and the box cover is driven to move downwards by a stress loading system so as to load the coal and rock simulation material; the hydraulic slotting unit in the directional drilling area comprises a drilling machine, a drill rod of the drilling machine stretches into a drill hole, and a hydraulic slotting cutter head is arranged at the front end of the drill rod. The utility model effectively monitors the mechanical properties and gas content of coal and rock in the drilling and hydraulic slotting process by simulating the construction condition of real coal and rock, can analyze the mechanism and rule of the drilling and hydraulic slotting process according to the monitoring result, and provides a reliable basis for optimizing the directional drilling and hydraulic fracturing of an actual mine.
Description
Technical Field
The utility model belongs to the technical field of test facilities for simulating stress field and gas concentration change in the hydraulic slotting process of an extraction drilling hole, and particularly relates to hydraulic slotting simulation test equipment of the extraction drilling hole.
Background
Along with the continuous deepening of the mining depth of coal gas resources, the mining environment of mine coal and the rock-soil mechanical environment are increasingly complex, the ground stress and the gas content are obviously improved, the dangers of mine rock burst and coal seam mining are increasingly remarkable, the safe and efficient production of coal mines is seriously threatened, the hydraulic fracturing of a drilling machine is an on-site control technology integrating roof pressure relief, coal seam management and safe mining, the hydraulic fracturing is gradually applied to a coal mine management site with high mining depth, high ground stress and high roof strength, and hydraulic cracks are formed by injecting high-pressure water into a tunnel roof to crack the roof, so that the integrity of the hard roof is damaged, the strength of the hard roof is reduced, the roof strength is weakened, the breaking step distance of the roof is shortened, and the strong mine pressure phenomenon of a working face tunnel is controlled and managed. Because of the uncertainty of the pressure influence range in the actual application process of the site, the current hydraulic slotting effect is difficult to monitor in the actual construction process, so that the effective fracturing effect on the target area is not ideal. Therefore, a laboratory simulation test method is necessary to solve the defect of field actual measurement, provide data support for optimizing hydraulic fracturing of the top plate, and provide a more reliable technical means for gas control and safe production of the working face.
Disclosure of Invention
In view of the above, the utility model aims to overcome the defects in the prior art, and provides a hydraulic slotting simulation test device for extraction drilling, which can effectively monitor the mechanical properties and gas content of coal and rock in the drilling and hydraulic slotting process by simulating the structural condition of real coal and rock, and can monitor the hydraulic fracturing effect and the stress loading condition in the drilling process of a drill rod in real time by a far infrared camera and a high-speed camera, so that the mechanism and the rule of the drilling and hydraulic slotting process can be analyzed according to the monitoring result, and a reliable basis is provided for optimizing the directional drilling and hydraulic fracturing of an actual mine.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
the extraction drilling hydraulic slotting simulation test equipment comprises a coal seam simulation unit, a directional drilling area hydraulic slotting unit and a data processing unit;
the coal seam simulation unit comprises a test box and a gas simulation inflation system connected with the test box, a coal and rock simulation material is paved in the test box, a movable box cover is arranged at the top of the test box, and the box cover is driven to move downwards by a stress loading system so as to load the coal and rock simulation material;
the hydraulic slotting unit of the directional drilling area comprises a drilling machine, a drill rod of the drilling machine stretches into a drill hole, and a hydraulic slotting cutter head is arranged at the front end of the drill rod; the drill rod is of a hollow structure, a water pump pressure sensor is arranged in the drill rod, and high-pressure water is supplied into the drill rod by a pump station, so that a hydraulic cutting acting force is formed at a hydraulic slotting cutter head;
a plurality of gas pressure sensors, a plurality of stress sensors, a plurality of gas sensors and a plurality of acoustic emission sensors are arranged in the test box, and each sensor is electrically connected with the data processing unit; the gas simulation inflation system comprises a plurality of pipelines extending into the coal-rock simulation material, a plurality of air passing holes are formed in each pipeline, and each pipeline is connected with the inflation device.
Further, the stress loading system comprises a hydraulic cylinder for pressing the box cover.
Further, the test box comprises a box body with an opening at the upper end, the box cover is arranged at the opening end of the box body, and the box cover and the box body are sealed.
Further, a water inlet and a water outlet are arranged on the box body, a water inlet control valve is arranged on the water inlet, and a water outlet control valve is arranged on the water outlet.
Further, the box body is also provided with an overflow valve.
Further, install high-speed camera and far infrared camera in the box, high-speed camera and far infrared camera all are connected with data processing unit.
Further, the charging device charges CO2 into the pipeline to simulate gas.
Further, the pipeline adopts a copper pipe.
Further, the pump station comprises a water tank, a water pump is arranged on the water tank, and the water pump is communicated with the drill rod through a water supply pipeline.
Compared with the prior art, the utility model has the following advantages:
the test equipment is high in operability and easy to control, and can effectively simulate the real coal-rock structure, the occurrence condition of gas, the drilling process and the hydraulic slotting effect, so that the actual hydraulic fracturing process can be analyzed according to the monitoring result, and the fracturing effect of the actual hydraulic fracturing target area is improved. The monitoring terminal connected with the data processing unit can monitor the pressure, stress, gas concentration change, water pump pressure and hydraulic fracturing effect of the coal body in real time, and the quantitative characterization of the coal rock change, gas occurrence state and fracturing effect in the drilling and hydraulic slotting process is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute an undue limitation on the utility model. In the drawings:
fig. 1 is a schematic diagram of the structure of the present utility model.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the utility model, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present utility model can be understood by those of ordinary skill in the art in a specific case.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
The utility model provides a drainage drilling water conservancy slotting simulation test equipment, as shown in fig. 1, includes coal seam analog unit, directional drilling regional water conservancy slotting unit and data processing unit, can connect monitor terminal 17 at data processing unit, more is convenient for real-time supervision test condition. The coal seam simulation unit comprises a test box 1 and a gas simulation inflation system connected with the test box, wherein a coal rock simulation material 2 is paved in the test box, a movable box cover is arranged at the top of the test box, and the box cover is driven to move downwards by a stress loading system 3 so as to load the coal rock simulation material.
The hydraulic slotting unit of the directional drilling area comprises a drilling machine 4, a drill rod 20 of the drilling machine stretches into a drilling hole 5, and a hydraulic slotting cutter head 6 is arranged at the front end of the drill rod; the drill rod is of a hollow structure, a water pump pressure sensor 7 is arranged in the drill rod, and high-pressure water is supplied to the drill rod by a pump station 8, so that hydraulic cutting acting force is formed at a hydraulic slotting cutter head. When the drilling machine is actually used for drilling and slotting, the drilling machine can be moved to the drilling position firstly, the drilling machine is fixed according to a specified azimuth angle and an inclination angle, then the drilling machine is drilled and reamed at a preset position, sand blasting slotting is carried out after the drilling is completed, namely, after the drilling and the reaping are completed, a special sand blasting hydraulic slotting tool bit is replaced, a drill rod is deeply drilled again, a high-pressure sand blasting slotting function is started by the drill rod, a high-pressure pump station is started when the sand blasting slotting is started, a water inlet valve and a water outlet valve are opened, sand in a sand adding tank connected with the drill rod is wrapped in the tool bit along with high-pressure water flow, high-pressure jet is formed for cutting a rock wall in an penetration mode, a water pressure sensor monitors water pressure change in real time, and data are transmitted to a data processing center.
A plurality of gas pressure sensors 9, a plurality of stress sensors 10, a plurality of gas sensors 11 and a plurality of acoustic emission sensors 12 are arranged in the test box, and each sensor is electrically connected with a data processing unit 13. Preferably, the pressure sensor, the stress sensor and the gas sensor are arranged at the positions of the floor rock layer and the fault surface of the coal bed (simulated material). The acoustic emission sensors are paved around the roadway, signals are transmitted to the data processing center through the data transmission line in the fracturing process, and the development condition of cracks in the coal seam is monitored.
The gas simulation inflation system comprises a plurality of pipelines 14 extending into the coal-rock simulation material, a plurality of air passing holes are formed in each pipeline, and each pipeline is connected with an inflation device 15. Typically, copper tubing is used for the tubing. Wherein gas pressure sensors, stress sensors are disposed near the roadway coal seam and connected to a data processing center via data transmission line 16 for monitoring the mechanical properties of the coal rock (simulated material) during drilling and hydraulic slotting. The gas sensor can monitor drill site gas extraction data in real time, so that the permeability improvement effect of hydraulic fracturing is analyzed.
The test box is used for simulating deformation and damage of surrounding rock of underground engineering due to coal and gas outburst and hydraulic coal seam permeability improvement in actual drilling and slotting processes. The stress loading system comprises a hydraulic cylinder for pressing the box cover. In an alternative embodiment, the stress loading system comprises a reaction frame arranged at the upper end of the box body, a hydraulic cylinder is arranged on the reaction frame and connected with a hydraulic pump through a hydraulic pipeline, so that the compression acting force is applied to the box cover, and then the coal rock simulation material in the box body is loaded, and the actual geological stress condition is simulated. Typically, hydraulic cylinders are loaded at pressures up to 10MPa.
The test box comprises a box body with an opening at the upper end, wherein the box cover is arranged at the opening end of the box body, and the box cover and the box body are subjected to sealing treatment. By way of example, the box dimensions are 3.0m (length) ×1.2m (width) ×1.8m (height). The box body is provided with a water inlet and a water outlet, the water inlet is provided with a water inlet control valve, and the water outlet is provided with a water outlet control valve. In addition, an overflow valve can be arranged on the box body to ensure safety.
The high-speed camera 18 and the far infrared camera 19 are arranged in the box body, the high-speed camera and the far infrared camera are connected with the data processing unit, the high-speed camera and the far infrared camera are used for monitoring the inside of a coal bed sample, the loading condition and the hydraulic fracturing effect can be observed in real time, the data processing is carried out, the data processing is then transmitted to the monitoring terminal, and the monitoring terminal is used for monitoring the pressure of the water pump, the gas concentration, the stress loading condition and the hydraulic fracturing effect in real time.
The gas filling device fills CO2 into the pipeline to simulate gas, so as to simulate the occurrence of gas in coal and rock, and the gas filling amount can be adjusted according to the actual gas content of the coal seam. It should be noted that, the geometric similarity ratio of the test model and the material ratio of each layer are determined by rock mechanical parameters of the actual coal rock layer, and the coal rock layer is replaced by the test simulation material, and of course, those skilled in the art can also select the coal rock simulation material commonly used in the prior art for the test.
The pump station comprises a water tank, a water pump is arranged on the water tank, and the water pump is communicated with the drill rod through a water supply pipeline. The hydraulic slotting unit in the directional drilling area is utilized to realize the integration of drilling, hole making and fracturing, and the pressure change of the water injection pump is monitored in real time through the water pump pressure sensor in the hydraulic fracturing process, so that the fracturing effect is deduced.
The test equipment can simplify test conditions, shorten test period, solve the defect of field test, and truly simulate the change rule in the directional drilling and hydraulic fracturing processes. The test equipment can effectively simulate actual geological stress conditions and coalbed methane occurrence effects, water injection pressure changes of the water pump are monitored through the water pump pressure sensor, the mechanical properties and gas content of coal and rock in drilling and hydraulic slotting processes are effectively monitored through the gas pressure sensor, the stress sensor and the acoustic emission sensor, hydraulic fracturing effects and stress loading conditions in a drilling rod drilling process are monitored in real time through the far infrared camera and the high-speed camera, and therefore drilling and hydraulic slotting process mechanisms and rules can be analyzed according to monitoring results, and effective and reliable basis is provided for optimizing actual mine directional drilling and hydraulic fracturing.
The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The utility model provides a take out and adopt drilling water conservancy slotting analogue test equipment which characterized in that: the hydraulic slotting device comprises a coal seam simulation unit, a directional drilling area hydraulic slotting unit and a data processing unit;
the coal seam simulation unit comprises a test box and a gas simulation inflation system connected with the test box, a coal and rock simulation material is paved in the test box, a movable box cover is arranged at the top of the test box, and the box cover is driven to move downwards by a stress loading system so as to load the coal and rock simulation material;
the hydraulic slotting unit of the directional drilling area comprises a drilling machine, a drill rod of the drilling machine stretches into a drill hole, and a hydraulic slotting cutter head is arranged at the front end of the drill rod; the drill rod is of a hollow structure, a water pump pressure sensor is arranged in the drill rod, and high-pressure water is supplied into the drill rod by a pump station, so that a hydraulic cutting acting force is formed at a hydraulic slotting cutter head;
a plurality of gas pressure sensors, a plurality of stress sensors, a plurality of gas sensors and a plurality of acoustic emission sensors are arranged in the test box, and each sensor is electrically connected with the data processing unit; the gas simulation inflation system comprises a plurality of pipelines extending into the coal-rock simulation material, a plurality of air passing holes are formed in each pipeline, and each pipeline is connected with the inflation device.
2. The extraction borehole hydraulic slotting simulation test equipment according to claim 1, wherein: the stress loading system comprises a hydraulic cylinder for pressing the box cover.
3. The extraction borehole hydraulic slotting simulation test equipment according to claim 1, wherein: the test box comprises a box body with an opening at the upper end, the box cover is arranged at the opening end of the box body, and the box cover and the box body are subjected to sealing treatment.
4. The extraction borehole hydraulic slotting simulation test apparatus according to claim 3, wherein: the water inlet and the water outlet are arranged on the box body, the water inlet is provided with a water inlet control valve, and the water outlet is provided with a water outlet control valve.
5. The extraction borehole hydraulic slotting simulation test apparatus according to claim 3, wherein: and the box body is also provided with an overflow valve.
6. The extraction borehole hydraulic slotting simulation test apparatus according to claim 3, wherein: the high-speed camera and the far infrared camera are arranged in the box body and are connected with the data processing unit.
7. The extraction borehole hydraulic slotting simulation test equipment according to claim 1, wherein: the gas charging device charges CO2 into the pipeline to simulate gas.
8. The extraction borehole hydraulic slotting simulation test equipment according to claim 1, wherein: the pipeline adopts a copper pipe.
9. The extraction borehole hydraulic slotting simulation test equipment according to claim 1, wherein: the pump station comprises a water tank, a water pump is arranged on the water tank, and the water pump is communicated with the drill rod through a water supply pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320543623.8U CN219472092U (en) | 2023-03-20 | 2023-03-20 | Hydraulic slotting simulation test equipment for extraction drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320543623.8U CN219472092U (en) | 2023-03-20 | 2023-03-20 | Hydraulic slotting simulation test equipment for extraction drilling |
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| CN219472092U true CN219472092U (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320543623.8U Active CN219472092U (en) | 2023-03-20 | 2023-03-20 | Hydraulic slotting simulation test equipment for extraction drilling |
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| CN (1) | CN219472092U (en) |
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- 2023-03-20 CN CN202320543623.8U patent/CN219472092U/en active Active
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