CN120100313B - Composite drilling equipment and drilling method for deep geological storage of mine water - Google Patents

Composite drilling equipment and drilling method for deep geological storage of mine water

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Publication number
CN120100313B
CN120100313B CN202510585055.1A CN202510585055A CN120100313B CN 120100313 B CN120100313 B CN 120100313B CN 202510585055 A CN202510585055 A CN 202510585055A CN 120100313 B CN120100313 B CN 120100313B
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China
Prior art keywords
drill bit
main
auxiliary
module
sensor
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Active
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CN202510585055.1A
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Chinese (zh)
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CN120100313A (en
Inventor
李祥
杜松
车巧慧
张啸
陶盛
范莹琳
蒋喆
张树辉
丁晏
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Hydrogeology Bureau of China National Administration of Coal Geology
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Hydrogeology Bureau of China National Administration of Coal Geology
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Priority to CN202510585055.1A priority Critical patent/CN120100313B/en
Publication of CN120100313A publication Critical patent/CN120100313A/en
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Publication of CN120100313B publication Critical patent/CN120100313B/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00Rotary drilling
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B45/00Measuring the drilling time or rate of penetration
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/04Measuring depth or liquid level
    • E21B47/047Liquid level
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/30Assessment of water resources

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Geophysics (AREA)
  • Earth Drilling (AREA)

Abstract

本发明公开了一种用于矿井水深部地质封存的复合钻井设备及钻井方法,涉及矿井水深部地质封存技术领域,包括驱动模块、复合钻头、传感器模块和控制模块,所述驱动模块的动力输出端连接所述复合钻头,且所述复合钻头用于钻探主井筒和副井筒,所述传感器模块用于监测地层参数和所述复合钻头的转速,所述传感器模块和所述驱动模块均与所述控制模块电连接,且所述传感器模块能够将监测到的信息传递至所述控制模块,并使所述控制模块控制所述驱动模块动作。本发明能够提高封存效率和封存安全性。

The present invention discloses a composite drilling equipment and drilling method for deep mine water geological storage, relating to the technical field of deep mine water geological storage. The equipment comprises a drive module, a composite drill bit, a sensor module, and a control module. The power output end of the drive module is connected to the composite drill bit, and the composite drill bit is used to drill the main shaft and auxiliary shaft. The sensor module is used to monitor formation parameters and the rotational speed of the composite drill bit. The sensor module and the drive module are both electrically connected to the control module, and the sensor module can transmit the monitored information to the control module, which then controls the operation of the drive module. The present invention can improve the efficiency and safety of storage.

Description

Composite drilling equipment and drilling method for deep geological storage of mine water
Technical Field
The invention relates to the technical field of mine water deep geological storage, in particular to composite drilling equipment and a drilling method for mine water deep geological storage.
Background
With the continuous development of coal industry, mine water treatment is a problem to be solved urgently. The traditional mine water treatment mode has the defects of high cost, high environmental pollution risk and the like.
The mine water deep geological storage technology is used as an innovative treatment means, has the advantages of low treatment cost, small environmental impact, high efficiency in resource utilization and the like, and can reduce pollution and damage of mine water to underground water, protect aquifers, maintain natural circulation and balance of the underground water and prevent damage to underground water resources due to coal exploitation activities, but in the existing mine water deep geological storage technology, high-efficiency special equipment is lacking, and the storage efficiency and the storage safety are directly influenced.
Disclosure of Invention
The invention aims to provide a compound drilling device and a drilling method for deep geological storage of mine water, so as to solve the problems in the prior art and improve the storage efficiency and the storage safety.
In order to achieve the above object, the present invention provides the following solutions:
The invention provides composite drilling equipment for deep geological storage of mine water, which comprises a driving module, a composite drill bit, a sensor module and a control module, wherein the power output end of the driving module is connected with the composite drill bit, the composite drill bit is used for drilling a main shaft and a secondary shaft, the sensor module is used for monitoring stratum parameters and the rotating speed of the composite drill bit, the sensor module and the driving module are electrically connected with the control module, and the sensor module can transmit the monitored information to the control module and enable the control module to control the action of the driving module.
In an embodiment, the composite drill bit comprises a main drill bit and a plurality of auxiliary drill bits, the plurality of auxiliary drill bits are arranged around the periphery of the main drill bit, the main drill bit and the auxiliary drill bits are connected with the driving module, the main drill bit is used for drilling a main shaft, and the main drill bit and the auxiliary drill bits are used for drilling auxiliary shafts when working simultaneously.
In one embodiment, the drive module includes a primary drive element coupled to the primary drill bit and a secondary drive element coupled to the secondary drill bit.
In one embodiment, the main driving element and the main drill bit, and the auxiliary driving element and the auxiliary drill bit are respectively connected in a transmission way through a transmission assembly.
In an embodiment, the two groups of transmission assemblies have the same structure and comprise a speed reducer and a shaft coupling, wherein the power input end of the speed reducer is connected with the power output end of the main driving element or the auxiliary driving element, the power output end of the speed reducer is connected with one end of the shaft coupling, and the other end of the shaft coupling is connected with the main drill bit or the auxiliary drill bit.
In an embodiment, the main bit is rotatably connected to a mounting seat, the outer diameter of the mounting seat is smaller than or equal to the maximum outer diameter of the main bit, the auxiliary driving element is connected to the end surface of the mounting seat through a telescopic element, the telescopic element can drive the auxiliary driving element and the auxiliary bit to move in a direction away from or close to the axis of the main bit, and the auxiliary bit can extend out of the mounting seat or be completely recovered at one side of the mounting seat.
In one embodiment, the telescoping member is a linear push rod motor.
In one embodiment, the included angle between the axis of the main drill bit and the axis of the auxiliary drill bit is 10-30 degrees.
In an embodiment, the sensor module includes a pressure sensor, a water level sensor and a rotation speed sensor, the pressure sensor and the water level sensor are both configured to be disposed inside the formation, the pressure sensor is configured to monitor formation pressure, the water level sensor is configured to monitor water levels in the main wellbore and the auxiliary wellbore, the rotation speed sensor is mounted on the composite drill bit, and the rotation speed sensor is configured to monitor a rotation speed of the composite drill bit.
The invention also provides a composite drilling method for mine water deep geological storage, which adopts any one of the technical schemes, and comprises the following steps:
s1, geological investigation is carried out in a target area, geological parameters are collected, and drilling parameters of the composite drill bit are determined according to investigation results;
S2, starting a main driving element in the driving module, driving a main drill bit in the composite drill bit to drill so as to form a main shaft, monitoring the formation pressure and the water level change in the main shaft in real time by using a pressure sensor and a water level sensor in the sensor module, monitoring the rotation speed of the main drill bit in real time by using a rotation speed sensor in the sensor module, and adjusting the drilling parameters of the main drill bit in real time by using the control module according to the data fed back by the sensor module;
S3, after the main well barrel reaches a preset depth, starting an auxiliary driving element in the driving module, driving an auxiliary drill bit in the composite drill bit to drill so as to form a plurality of auxiliary well barrels around the main well barrel, wherein the main driving element and the auxiliary driving element act simultaneously, in the drilling process, a pressure sensor and a water level sensor are used for monitoring formation pressure and water level changes in the main well barrel and the auxiliary well barrel in real time, a rotating speed sensor is used for monitoring rotating speeds of the main drill bit and the auxiliary drill bit in real time, and according to data fed back by the sensor module, drilling parameters of the main drill bit and the auxiliary drill bit are adjusted in real time through the control module;
S4, injecting the pretreated mine water into the main shaft and the auxiliary shaft through a water injection pipeline for sealing, and continuously monitoring pressure changes and water level changes in the main shaft and the auxiliary shaft in the water injection process to ensure safety and stability of the sealing process.
Compared with the prior art, the invention has the following technical effects:
The invention provides a composite drilling device and a drilling method for deep geological storage of mine water, the composite drilling device comprises a driving module, a composite drill bit, a sensor module and a control module, wherein the power output end of the driving module is connected with the composite drill bit so as to provide driving force through the driving module and further drive the composite drill bit to rotate, drilling of a shaft is realized, the composite drill bit is used for drilling a main shaft and an auxiliary shaft, and further the main shaft and the auxiliary shaft are matched, storage space of mine water is enlarged, storage efficiency of mine water is improved, the sensor module is used for monitoring stratum parameters and rotating speed of the composite drill bit, and further stratum pressure changes and water level changes in the main shaft and the auxiliary shaft can be monitored in real time in the drilling process, so that abnormal conditions in the drilling process can be found and processed in time, safety of drilling operation is improved, environmental risks are reduced, the sensor module and the driving module are electrically connected with the control module, and the sensor module can transmit monitored information to the control module to control the driving module to act so as to adjust drilling parameters of the composite drill bit in real time according to actual conditions, and adaptability and flexibility are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a composite drilling apparatus for deep geological sequestration of mine water according to a first embodiment;
In the figure, the device comprises a 1-main driving element, a 2-auxiliary driving element, a 3-speed reducer, a 4-coupling, a 5-control module, a 6-sensor module, a 7-main drill bit and an 8-auxiliary drill bit.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a compound drilling device and a drilling method for deep geological storage of mine water, which are used for solving the problems existing in the prior art and improving the storage efficiency and the storage safety.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1, the embodiment provides a composite drilling device for deep geological storage of mine water, which comprises a driving module, a composite drill bit, a sensor module 6 and a control module 5, wherein the power output end of the driving module is connected with the composite drill bit, so as to provide driving force for driving the composite drill bit to rotate, drilling of a shaft is realized, the composite drill bit is used for drilling a main shaft and an auxiliary shaft, further, through matching of the main shaft and the auxiliary shaft, storage space of mine water is enlarged, storage efficiency of mine water is improved, the sensor module 6 is used for monitoring stratum parameters and rotating speed of the composite drill bit, further, stratum pressure change and water level change in the main shaft and the auxiliary shaft can be monitored in real time in the drilling process, abnormal conditions in the drilling process can be found and processed in time, safety of drilling operation is improved, environmental risk is reduced, the sensor module 6 and the driving module are electrically connected with the control module 5, the sensor module 6 can transmit monitored information to the control module 5, and the control module 5 is enabled to control the driving module to act, the rotating speed of the composite drill bit is adjusted in real time according to actual conditions, adaptability and the like.
Specifically, the composite drill bit includes main drill bit 7 and a plurality of auxiliary drill bit 8, a plurality of auxiliary drill bits 8 are arranged around the periphery of main drill bit 7, that is, a plurality of auxiliary drill bits 8 are around the periphery of main drill bit 7 round, main drill bit 7 and auxiliary drill bit 8 all are connected with drive module, and drive module is used for driving main drill bit 7 and auxiliary drill bit 8 respectively and rotates, main drill bit 7 is used for boring main pit shaft, main drill bit 7 and auxiliary drill bit 8 are used for boring auxiliary pit shaft when simultaneously working, and then form round auxiliary pit shaft in the periphery of main pit shaft, through main pit shaft and auxiliary pit shaft combined action, enlarge the sealing space of mine water, improve the sealing efficiency of mine water. As a preferred solution, the number of the auxiliary drill bits 8 is four, and the four auxiliary drill bits 8 are uniformly arranged on the periphery of the main drill bit 7, that is, form a cross arrangement, and the number of the auxiliary drill bits 8 can be adaptively adjusted according to actual needs by a person skilled in the art, so that a required number of auxiliary wellbarrels can be obtained.
The main drill bit 7 is made of hard alloy materials, has higher strength and wear resistance, can adapt to different geological conditions, and compared with the main drill bit 7, the auxiliary drill bit 8 is relatively smaller in size, but more in number, and can flexibly adjust drilling angle and depth.
The driving module comprises a main driving element 1 and an auxiliary driving element 2, wherein the main driving element 1 is connected with a main drill bit 7, the main driving element 1 is used for independently controlling the main drill bit 7 to rotate, the auxiliary driving element 2 is connected with an auxiliary drill bit 8, and the auxiliary driving element 2 is used for independently controlling the auxiliary drill bit 8 to rotate, so that rotary drilling of the main drill bit 7 and rotary drilling of the auxiliary drill bit 8 are not affected.
Preferably, the power of the main driving element 1 is higher and is designed to be 300 kilowatts for driving the main drill bit 7 to drill at a high speed to ensure the rapid formation of the main shaft, while the power of the auxiliary driving element 2 is relatively lower and is designed to be 50 kilowatts for driving the auxiliary drill bit 8 to drill at a low speed to accurately control the drilling process of the auxiliary shaft, so that the formation is prevented from being excessively disturbed.
The main driving element 1 and the main drill bit 7, the auxiliary driving element 2 and the auxiliary drill bit 8 are respectively connected in a transmission way through a transmission component, and the driving force of the main driving element 1 is stably transmitted to the main drill bit 7 and the driving force of the auxiliary driving element 2 is stably transmitted to the auxiliary drill bit 8 through the arrangement of the transmission component.
The two groups of transmission components are identical in structure and comprise a speed reducer 3 and a coupler 4, the power input end of the speed reducer 3 is connected with the power output end of the main driving element 1 or the auxiliary driving element 2, the power output end of the speed reducer 3 is connected with one end of the coupler 4, the other end of the coupler 4 is connected with the main drill bit 7 or the auxiliary drill bit 8, the output rotating speeds of the main driving element 1 and the auxiliary driving element 2 are adjusted through the design of the speed reducer 3, and stable driving force is output to the main drill bit 7 and the auxiliary drill bit 8 by matching with the arrangement of the coupler 4.
The main drill bit 7 rotates to be connected on a mount pad, avoid the setting of mount pad to influence the rotation of main drill bit 7, the external diameter of mount pad is less than or equal to the biggest external diameter of main drill bit 7, avoid in main drill bit 7 brill in-process, the mount pad influences whole equipment and descends, simultaneously, through the setting of mount pad, still provide a mounting platform for vice drill bit 8, vice actuating element 2 passes through telescopic element to be connected on the terminal surface of mount pad, and telescopic element can drive vice actuating element 2 and vice drill bit 8 to the direction removal of keeping away from or being close to the axis of main drill bit 7, and then realize vice drill bit 8 and stretch out the mount pad or retrieve in one side of mount pad completely, when only need boring main pit shaft, make vice drill bit 8 retrieve completely in one side of mount pad, and then avoid vice drill bit 8 to influence the brill of main drill bit 7, and when main pit shaft reaches a depth, when need boring vice drill bit 8 in step, can form vice pit shaft 8 to the vice drill bit 8 of vice 8 of telescopic element control, to connect between main drill bit 7 and vice drill bit 8, still can not influence the vice drill bit 8 when just need boring 8, can not normally, and the realization of boring mode can not be in the normal bit 8 is not need to the bit 8 to the side of boring.
The telescopic element is a linear push rod motor, and the extension and retraction of the auxiliary drill bit 8 can be realized through the extension and retraction of the linear push rod motor. The person skilled in the art can also select other forms of telescopic elements according to actual needs, for example, hydraulic cylinders, air cylinders, etc., as long as stable movement of the auxiliary drill bit 8 can be achieved.
The primary drive element 1 and the secondary drive element 2 are both motors, and preferably the primary drive element 1 and the secondary drive element 2 are each provided with a frequency converter, the rotational speed of which can be adjusted as required. The double power source design and the optimized drilling mode make the drilling process more efficient, and reduce the energy consumption and the running cost of the equipment.
The control module 5 is preferably a ground control system, and is matched with the design of the sensor module 6, so that various parameters in the drilling process, such as formation pressure, water level changes in the main shaft and the auxiliary shaft, rotation speeds of the main drill bit 7 and the auxiliary drill bit 8 and the like, can be monitored in real time. The data acquired by the sensor module 6 is transmitted to the ground control center for analysis by a wired or wireless connection mode, and the drilling process can be controlled and adjusted according to the analysis result of the monitoring data.
The included angle between the axis of the main drill bit 7 and the axis of the auxiliary drill bit 8 is 10-30 degrees, and the included angle can be specifically adjusted according to actual needs by a person skilled in the art.
The sensor module 6 includes pressure sensor, water level sensor and rotation speed sensor, and pressure sensor and water level sensor all are used for setting up in the stratum inside, and pressure sensor is used for monitoring stratum pressure, and water level sensor is used for monitoring the water level in main pit shaft and the auxiliary pit shaft, and rotation speed sensor installs on compound drill bit, and rotation speed sensor is used for monitoring the rotation speed of compound drill bit, and as preferred, to pressure sensor, water level sensor and rotation speed sensor's concrete setting position, the person of skill in the art can carry out suitable adjustment to make it carry out corresponding parameter monitoring better.
Example two
The embodiment provides a composite drilling method for mine water deep geological storage, which uses the composite drilling equipment for mine water deep geological storage in the first embodiment, and comprises the following steps:
s1, performing geological investigation in a target area, collecting geological parameters including stratum structure, rock hardness, groundwater distribution and the like, determining drilling parameters of a composite drill bit, such as drill bit type, drilling angle, rotating speed and the like, and making a detailed drilling plan according to investigation results;
S2, starting a main driving element 1 in a driving module, driving a main drill bit 7 in a composite drill bit to drill at a higher rotating speed (for example, 100-200 rpm) to form a main well barrel with the diameter of about 1 meter, monitoring formation pressure and water level change in the main well barrel in real time by using a pressure sensor and a water level sensor in a sensor module 6 during drilling, monitoring the rotating speed of the main drill bit 7 in real time by using a rotating speed sensor in the sensor module 6, and according to data fed back by the sensor module 6 (for example, sudden pressure increase, sudden water level increase, abnormal rotating speed of the main drill bit 7, etc., the situation that an aquifer, a hard rock stratum, etc. may be encountered), and further adjusting drilling parameters of the main drill bit 7 (for example, increasing the rotating speed to break through the hard rock stratum, etc.) in real time by a control module 5;
S3, after the main well barrel reaches a preset depth, starting a secondary driving element 2 in a driving module, driving a secondary drill bit 8 in a composite drill bit to drill at a lower rotating speed (for example, 30-50 rpm) so as to form a plurality of secondary well barrels with the diameter of about 0.5 m around the main well barrel, wherein the main driving element 1 and the secondary driving element 2 act simultaneously, in the drilling process, a pressure sensor and a water level sensor are used for monitoring formation pressure and water level changes in the main well barrel and the secondary well barrel in real time, rotating speeds of the main drill bit 7 and the secondary drill bit 8 are monitored in real time, according to data fed back by the sensor module 6 (for example, the pressure is suddenly increased, the water level is suddenly increased, the rotating speed of the secondary drill bit 8 is abnormally increased, an aquifer, hard rock and the like are considered to be possibly encountered), and further, the drilling parameters of the main drill bit 7 and the secondary drill bit 8 are adjusted in real time (for example, the rotating speed is increased to break through the hard rock stratum and the like) through a control module 5;
S4, injecting the pretreated mine water into the main shaft and the auxiliary shaft through the water injection pipeline for sealing, continuously monitoring pressure changes and water level changes in the main shaft and the auxiliary shaft in the water injection process, ensuring safety and stability of the sealing process, and simultaneously, monitoring the sealed stratum for a long time through the control module 5 and the sensor module 6, and evaluating sealing effect and environmental influence.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided herein to facilitate understanding of the principles and embodiments of the present invention and to provide further advantages and practical applications for those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.

Claims (7)

1. The composite drilling method for the deep geological sequestration of the mine water is characterized in that composite drilling equipment for the deep geological sequestration of the mine water is used and comprises a driving module, a composite drill bit, a sensor module and a control module, wherein the power output end of the driving module is connected with the composite drill bit, the composite drill bit is used for drilling a main shaft and a secondary shaft, the sensor module is used for monitoring stratum parameters and the rotating speed of the composite drill bit, the sensor module and the driving module are electrically connected with the control module, the sensor module can transmit monitored information to the control module, and the control module can control the driving module to act;
the composite drill bit comprises a main drill bit and a plurality of auxiliary drill bits, the auxiliary drill bits are arranged around the periphery of the main drill bit, the main drill bit and the auxiliary drill bits are connected with the driving module, the main drill bit is used for drilling a main shaft, and the main drill bit and the auxiliary drill bits are used for drilling auxiliary shafts when working simultaneously;
the driving module comprises a main driving element and a secondary driving element, the main driving element is connected with the main drill bit, and the secondary driving element is connected with the secondary drill bit;
The method also comprises the following steps:
s1, geological investigation is carried out in a target area, geological parameters are collected, and drilling parameters of the composite drill bit are determined according to investigation results;
S2, starting a main driving element in the driving module, driving a main drill bit in the composite drill bit to drill so as to form a main shaft, monitoring the formation pressure and the water level change in the main shaft in real time by using a pressure sensor and a water level sensor in the sensor module, monitoring the rotation speed of the main drill bit in real time by using a rotation speed sensor in the sensor module, and adjusting the drilling parameters of the main drill bit in real time by using the control module according to the data fed back by the sensor module;
S3, after the main well barrel reaches a preset depth, starting an auxiliary driving element in the driving module, driving an auxiliary drill bit in the composite drill bit to drill so as to form a plurality of auxiliary well barrels around the main well barrel, wherein the main driving element and the auxiliary driving element act simultaneously, in the drilling process, a pressure sensor and a water level sensor are used for monitoring formation pressure and water level changes in the main well barrel and the auxiliary well barrel in real time, a rotating speed sensor is used for monitoring rotating speeds of the main drill bit and the auxiliary drill bit in real time, and according to data fed back by the sensor module, drilling parameters of the main drill bit and the auxiliary drill bit are adjusted in real time through the control module;
S4, injecting the pretreated mine water into the main shaft and the auxiliary shaft through a water injection pipeline for sealing, and continuously monitoring pressure changes and water level changes in the main shaft and the auxiliary shaft in the water injection process to ensure safety and stability of the sealing process.
2. The method of claim 1, wherein the primary driving element and the primary drill bit and the secondary driving element and the secondary drill bit are respectively connected in a transmission way through a transmission component.
3. The method of claim 2, wherein the two sets of transmission assemblies have the same structure and comprise a speed reducer and a shaft coupling, the power input end of the speed reducer is connected with the power output end of the main driving element or the auxiliary driving element, the power output end of the speed reducer is connected with one end of the shaft coupling, and the other end of the shaft coupling is connected with the main drill bit or the auxiliary drill bit.
4. The method of claim 1, wherein the main bit is rotatably connected to a mounting base, the outer diameter of the mounting base is smaller than or equal to the maximum outer diameter of the main bit, the auxiliary driving element is connected to the end face of the mounting base through a telescopic element, the telescopic element can drive the auxiliary driving element and the auxiliary bit to move in a direction away from or close to the axis of the main bit, and the auxiliary bit can extend out of the mounting base or be completely recovered at one side of the mounting base.
5. The method of claim 4, wherein the telescoping member is a linear push rod motor.
6. The method for composite drilling of deep geological storage of mine water as claimed in claim 1, wherein an included angle between the axis of the main drill bit and the axis of the auxiliary drill bit is 10-30 degrees.
7. The method of claim 1, wherein the sensor module comprises a pressure sensor, a water level sensor and a rotational speed sensor, wherein the pressure sensor and the water level sensor are arranged in the stratum, the pressure sensor is used for monitoring stratum pressure, the water level sensor is used for monitoring water levels in a main well bore and a secondary well bore, the rotational speed sensor is arranged on the composite drill bit, and the rotational speed sensor is used for monitoring rotational speed of the composite drill bit.
CN202510585055.1A 2025-05-08 2025-05-08 Composite drilling equipment and drilling method for deep geological storage of mine water Active CN120100313B (en)

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Citations (2)

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