CN116877063A - Deep goaf while-drilling system and communication quality evaluation method - Google Patents
Deep goaf while-drilling system and communication quality evaluation method Download PDFInfo
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- CN116877063A CN116877063A CN202310874309.2A CN202310874309A CN116877063A CN 116877063 A CN116877063 A CN 116877063A CN 202310874309 A CN202310874309 A CN 202310874309A CN 116877063 A CN116877063 A CN 116877063A
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- 238000004891 communication Methods 0.000 title claims abstract description 121
- 238000005553 drilling Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000013441 quality evaluation Methods 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 239000000523 sample Substances 0.000 claims abstract description 18
- 239000011800 void material Substances 0.000 claims description 17
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 2
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing 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
Abstract
The application discloses a deep goaf while drilling system and a communication quality evaluation method. The system comprises a drill rod device and a ground control terminal; the drill rod device comprises a drill bit, an intelligent probe rod and a communication drill rod assembly; the intelligent probe rod is vertically connected between the drill bit and the communication drill rod assembly; the intelligent probe rod is provided with a detection module which is used for at least acquiring detection data in the deep empty area; the communication drill rod assembly comprises at least three communication rods and at least two relay rods which form a communication link, and any relay rod is arranged between two adjacent communication rods; any relay rod transmits the respective standard data packet to the upper part of the stratum one or more times along the communication link; the ground control terminal receives standard data packets sent by at least two relay rods, and evaluates the communication quality of at least part of the communication links according to the loss of the standard data packets.
Description
Technical Field
The application relates to the field of geological exploration, in particular to a deep goaf while-drilling system and a communication quality evaluation method thereof
Background
The peeping imaging of the deep empty area is that a measurer holds a detection instrument deep into an underground space to perform detection, and the detection instrument is sent into the deep empty area to perform detection through drilling.
However, the deep goaf of the underground rescue site of the deep coal mine is problematic in that: the maximum burial depth of the deep empty area exceeds kilometers; the overlying stratum of the deep empty zone is subjected to severe mining disturbance, so that a stable drilling channel is not easy to form; the detection personnel cannot directly enter the deep empty area under the environmental constraint; the geographic position of the deep empty area has randomness; the deep empty area has complex structure and poor visual condition, and water accumulation with different degrees exists in most cases. Therefore, the above-described method of geophysical prospecting for the earth's surface is not applicable when the deep goaf detection is performed.
Meanwhile, for the existing detecting instruments, such as sonar, laser radar, camera device and the like, stable drilling channels must be formed in advance, so that the detecting instruments can enter the deep empty areas to detect, but the detecting depth of the detecting instruments is limited, and the detecting in the deep empty areas cannot be implemented.
Then, for the deep goaf formed by deep coal mining, no matter the goaf is a caving behind a working face or a rescue site of an underground accident, a measuring person cannot enter, and as the overlying strata of the deep goaf are severely damaged by mining disturbance, an effective drilling channel cannot be formed on the ground, and a detecting instrument cannot be fed into the deep goaf. In emergency rescue work, because of the time and the task weight, personnel measurement and drilling detection in the deep empty area cannot meet the accident handling requirements.
Therefore, various detection devices synchronously enter the deep empty areas along with the geological drill bit, and the operation while drilling is implemented, so that the method is a key technology for detecting the deep empty areas currently.
Meanwhile, the deep empty zone is generally far away from the ground surface, the drill bit is long away from the ground surface, and detection data acquired by the detection equipment in the deep empty zone are required to be transmitted to the ground surface through a longer communication link in the drill rod. In the process of transmitting the detection data along the communication link, considering the consideration of different environments under the stratum on the transmission signals, how to evaluate the communication quality of the communication link in advance is a key technology of the current matched deep empty area while drilling.
Disclosure of Invention
The embodiment of the application discloses a deep empty area while drilling system and a method for overcoming the defects in the prior art.
In a first aspect, embodiments of the present application disclose a deep void while drilling system. The deep empty area while drilling system comprises a drill rod device and a ground control terminal; the drill rod device comprises a drill bit, an intelligent probe rod and a communication drill rod assembly; the intelligent probe rod is vertically connected between the drill bit and the communication drill rod assembly; the intelligent probe rod is provided with a detection module, and the detection module is used for at least acquiring detection data in the deep empty area; the communication drill rod assembly comprises at least three communication rods and at least two relay rods which form a communication link, and any relay rod is arranged between two adjacent communication rods; any of the relay rods transmits respective standard data packets one or more times along the communication link to above the formation; and the ground control terminal receives the standard data packets sent by at least two relay rods, and evaluates the communication quality of at least part of the communication links according to the loss of the marking data packets.
In addition, the standard data packet in the embodiment of the application consists of standard data and number information; and the ground control terminal evaluates the communication quality of the communication link between any two relay rods according to the standard data and the number information.
In addition, the ground control terminal acquires the standard data packets sent by any two relay rods; the ground control terminal confirms a link paragraph of a communication link according to any two pieces of the number information; and the ground control terminal evaluates the communication quality of the link paragraph according to the two standard data.
In addition, the ground control terminal confirms the data loss of the standard data according to preset data; and the ground control terminal evaluates the communication quality of the link paragraph according to the data loss of the two standard data.
In addition, the ground control terminal in the embodiment of the application evaluates the communication quality of the link segment according to the comparison of the data loss degree of the two standard data and a loss threshold value.
In addition, the ground control terminal generates a first control instruction sent to one or more relay rods below the stratum according to the communication quality of the communication link; and one or more relay rods adjust the sending strategy of the standard data packet according to the first control instruction.
In addition, in the embodiment of the present application, one or more relay rods enhance the number and/or frequency of transmission of the standard data packet according to the first control instruction.
In addition, the standard data packet in the embodiment of the application comprises at least two types of standard data of each sensor type; and the ground control terminal evaluates the communication quality of the communication link to the data of different sensor types according to the standard data of each sensor type.
In addition, the ground control terminal generates a second control instruction which is sent to one or more relay rods below the stratum according to the communication quality of the sensor type data; and one or more relay rods adjust redundancy and/or sending strategies of the standard data of each sensor type in the standard data packet according to the second control instruction.
In a second aspect, the embodiment of the application discloses a communication quality evaluation method of a deep goaf while drilling system, and the deep goaf while drilling system is applied. The communication quality evaluation method of the deep goaf while drilling system comprises the following steps: any of the relay rods transmits respective standard data packets one or more times along the communication link to above the formation; and the ground control terminal receives the standard data packets sent by at least two relay rods, and evaluates the communication quality of at least part of the communication links according to the loss of the marking data packets.
Compared with the prior art, the system of the embodiment of the application can independently evaluate the communication quality of each link paragraph in the communication link when the link paragraphs deal with different sensor types, and can comprehensively evaluate the overall communication quality of each link paragraph in the communication link when facing emergency rescue through weighting corresponding to various sensors associated with emergency rescue.
Other features of embodiments of the present application and advantages thereof will be apparent from the following detailed description of the disclosed exemplary embodiments with reference to the drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic structural diagram of a deep goaf while drilling system according to the present embodiment.
Fig. 2 shows a schematic structural diagram of the deep goaf while drilling system of the present embodiment.
Fig. 3 is a schematic flow chart showing the evaluation of the communication quality by the relay module of the present embodiment.
Detailed Description
In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Embodiments of the application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are disclosed in order to provide a thorough and complete disclosure of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
The embodiment discloses a system while drilling for a deep goaf 200 and a communication quality evaluation method. The deep void 200 while drilling system is applied to real-time drilling and detection of the deep void 200, and can evaluate the communication quality of a communication link formed upwards from a stratum along the system after drilling reaches the deep void 200 so as to evaluate the credibility of subsequent detection data of the deep void 200, particularly the credibility of at least part of detection data of three-dimensional modeling which helps in emergency rescue.
Fig. 1 shows a schematic structure of a system while drilling for a deep empty region 200 according to the present embodiment. Fig. 1 shows that the while-drilling system for the deep hollow zone 200 of the present embodiment includes a drill pipe apparatus 100, a ground control terminal 300, and a remote control terminal 400.
The drill pipe device 100 of this embodiment is used to drill into the deep void 200 below the formation, and after the drill reaches the deep void 200, data information of a plurality of different sensor types is acquired, and the drill pipe device 100 transmits the data information to the surface along a communication link configured within the rod. The surface control terminal 300 is configured to receive data information from the drill rod assembly 100, and perform data processing according to the data information and transmit the data information to the remote control terminal 400. The remote control terminal 400 analyzes the processed data information for image display of the geomorphic environment within the deep empty region 200 or for reconstructing a three-dimensional model of the deep empty region 200. After the drill rod device 100 extends into the deep empty area 200, the drill rod device 100 can collect data such as the landform environment and personnel information in the deep empty area 200, and then transmit the collected data information to the upper part of the stratum along the communication link of the drill rod device 100 until the ground control terminal 300 and the remote control terminal 400 are reached, so that the data collection, processing and analysis of the deep empty area 200 are realized, and further the support is provided for implementing emergency rescue of the deep empty area 200.
Fig. 2 shows a schematic structural view of the drill rod assembly 100 of the present embodiment. Fig. 2 illustrates that the drill rod assembly 100 of the present embodiment includes a drill bit 210, a smart sonde 220, and a communication drill rod assembly that are deployed generally vertically.
The drill bit 210 of the present embodiment is a drill bit 210 of a general geological drilling rig. The drill bit 210 is deployed at the distal end of the drill pipe assembly 100 toward the subsurface formation. The communication drill rod assembly of this embodiment is deployed at the proximal end of the intelligent probe 220 facing above the formation. Then the drill pipe apparatus 100 transmits a rotational moment to the drill bit 210 along the communication drill pipe assembly and the intelligent probe 220 when the rotational moment is applied to the portion protruding from the earth's surface, so as to achieve drilling; during the drilling of the drill bit 210, the intelligent probe 220 with the sensor deployed therein will follow the drill bit 210 to the deep void 200.
The intelligent probe 220 of this embodiment includes a sensor assembly deployed along the wall of the probe and a main control circuit board. The wall of the intelligent probe 220 of this embodiment is configured with a plurality of openings, which are provided with cover glass plates. The sensor assemblies of this embodiment are distributed in a fixed arrangement within the build aperture. The sensor can adopt a sonar-laser radar-audio and video comprehensive means, and integrates a multifunctional while-drilling optical detection combined unit for real-time observation of high-definition images, thermal infrared imaging and two-way voice communication. The main control circuit board of this embodiment is installed in the intelligent probe 220 and is electrically connected with the sensor assembly. The main control circuit board is at least used for receiving and modulating detection data for sending the sensor combination to the ground, wherein the detection data comprises data information of a plurality of different sensor types. The sensor assembly sends the detection data to the main control circuit board, the main control circuit board can perform basic data processing and modulation on the detection data, and the main control circuit board transmits the processed and modulated detection data into the communication drill rod assembly through the interface circuit.
Referring again to FIG. 2, a schematic structural diagram of the communication drill rod assembly of this embodiment is shown. Fig. 2 shows that the communication drill rod assembly of the present embodiment includes a plurality of vertically adjacent combined relay rod segments 240 and communication rods 230.
The two ends of the communication rod 230 and the relay rod section 240 of this embodiment are configured with universal rod joints. The lever joint is used for realizing torque transmission and electric signal transmission when the relay lever section 240 and the communication lever 230, the relay lever section 240 and the communication lever 230 synchronously rotate. The communication rod 230 is internally provided with a through conductive cable, the conductive cable can realize electric signal transmission between two rod joints, and the communication rod 230 closest to the ground surface is connected with the ground control terminal 300 after being led out of the cable through an outgoing line end. A relay pole segment 240 is connected between a combination of two partially adjacent communication poles 230. Multiple relay pole segments 240 may enable separate or coordinated implementation data handling.
Preferably, the interior of the relay pole section 240 is configured with relay modules. And the two ends of the relay module are respectively connected with the joints of the two ends of the rod through the conductive cable to realize electric signal transmission. The relay module itself may implement processing of the received and/or transmitted electrical signals, such as modulating, demodulating, enhancing, compensating, comparing, etc., the electrical signals, providing a basis for signal transmission, business applications, etc., of the ground control terminal 300 and the remote control terminal 400.
In addition, the main control circuit board of the embodiment generates a check code of the data information of each sensor type based on hash check. The main control circuit board modulates the data information and the check code into detection data, and transmits the modulated detection data to the upper part of the stratum through a communication rod 230 adjacent to the intelligent probe rod 220.
In this embodiment, after the intelligent probe 220 is drilled into the deep space 200, the plurality of relay modules respectively transmit standard data packets to the above-ground layer along the communication link formed by the communication drill rod assembly. The ground control terminal 300 receives standard data packets transmitted from each relay module below the formation. The standard data packet consists of standard data of all sensor types and serial number information of the corresponding transmitting relay module.
Among them, sensor types include, but are not limited to, audio type, video type, laser type, sonar data, infrared data, etc. The system sensor of the embodiment adopts a sonar-laser radar-audio and video comprehensive means, and integrates the functions of real-time observation of high-definition images, thermal infrared imaging, two-way voice communication and the like.
In this embodiment, the ground control terminal 300 evaluates the communication quality according to the standard data and the number information sent by each relay module, and the communication quality of the communication link formed by the communication drill rod assembly under the influence of the surrounding stratum.
Fig. 3 is a schematic flow chart showing the evaluation of the communication quality by the relay module of the present embodiment. Fig. 3 shows the method steps of the relay module to evaluate the communication quality for the deep void 200 while drilling system.
S11, the ground control terminal 300 acquires standard data packets sent by all relay rods and analyzes standard data and number information of the standard data packets.
The S12 ground control terminal 300 selects any two relay bars according to the number information, and acquires standard data of the two relay bars.
S13, the ground control terminal 300 respectively compares one preset data with two standard data to respectively acquire the data loss degree of the two standard data and the preset data.
The standard data initially sent by the relay rod are the same as the preset data. The standard data which the ground control terminal 300 subsequently receives is different from the preset data due to the loss of data in the communication quality. The standard data received by the ground control terminal 300 is distinguished from the preset data by data loss.
Preferably, the relay rod in this embodiment transmits standard data packets in a binary protocol. The data discrimination of the standard data received by the ground control terminal 300 from the preset data is characterized by the feature code being at least one byte different.
The ground control terminal 300 compares the data loss degree of the two standard data with at least one loss threshold value and evaluates the communication quality of the link segment between the two relay rods according to the comparison.
Evaluating that the communication quality of a link paragraph between two relay rods is poor when both data loss degrees are greater than or equal to a loss threshold;
evaluating that the communication quality of a link paragraph between two relay rods is excellent when both data loss degrees are smaller than a loss threshold value;
when the data loss degree of the relay rod close to the far end is larger than or equal to a loss threshold value, evaluating that the communication quality of a link paragraph between the two relay rods is good when the data loss degree of the relay rod close to the far end is smaller than the loss threshold value;
and when the data loss degree of the relay rod close to the end is larger than or equal to a loss threshold value, evaluating the communication quality of a link paragraph between the two relay rods as abnormal when the data loss degree of the relay rod close to the end is smaller than the loss threshold value.
Based on this, the communication path of the relay lever at the far end of the present embodiment covers the communication path of the relay lever at the near end. In view of the fact that the communication quality does not cause fixed data loss, the present embodiment indirectly evaluates the communication quality of a link segment between two relay rods with the degree of data loss of the standard data transmitted by the two relay rods.
Further, considering that the data characteristics and lengths of the data of different sensor types are different, the method of the embodiment respectively evaluates the standard data of each sensor type.
Therefore, in step S11, the ground control terminal 300 parses the standard data of each sensor type in the standard data packet. In step S13, the ground control terminal 300 compares preset data corresponding to the sensor type with standard data to acquire the data loss degree of the standard data corresponding to the sensor type. In step S14, the ground control terminal 300 sequentially compares the data loss degree of the standard data of each sensor type with at least one loss threshold value corresponding to each sensor type, and evaluates the communication quality of the link segment between the two relay rods falling on the data corresponding to each sensor type based on the comparison result.
Meanwhile, it is considered that the system of the present embodiment is applied to the field of emergency rescue for the deep goaf 200. In this embodiment, the portions of each sensor type, such as a video sensor, a laser scanning sensor, and the like, can help emergency rescue personnel observe the landform environment of the deep goaf 200 in a manner of directly displaying or indirectly reconstructing a three-dimensional model, so that the method of this example can focus on the respective communication quality of each sensor type data associated with emergency rescue, and the overall communication quality of each sensor type data associated with emergency rescue.
Therefore, the ground control terminal 300 of this embodiment further obtains the evaluation weights of the sensor types, and calculates the overall communication quality evaluation of the paragraph link for emergency rescue according to the evaluation weights.
For example, in the present embodiment, the ground control terminal 300 sets the evaluation weight of the video sensor to 1 and the evaluation weight of the audio sensor to 0.2; and configuring evaluation scores 3, 2, 1, 0 and the like from high to low of communication quality of the paragraph links of each sensor type, wherein the ground control terminal 300 takes the weighted average of the evaluation weight and the evaluation score of each sensor type as the overall communication quality evaluation of the corresponding paragraph links facing emergency rescue.
Compared with the prior art, the system of the embodiment of the application can independently evaluate the communication quality of each link paragraph in the communication link when the link paragraphs deal with different sensor types, and can comprehensively evaluate the overall communication quality of each link paragraph in the communication link when facing emergency rescue through weighting corresponding to various sensors associated with emergency rescue.
From the above description of embodiments, it will be clear to a person skilled in the art that the present application may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment.
Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (RandomAccess Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., including several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to execute the method of the embodiments of the present application.
Note that the above is only a preferred embodiment of the present application and the technical principle applied. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, while the application has been described in connection with the above embodiments, the application is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the application, which is set forth in the following claims.
Claims (10)
1. A system while drilling in a deep empty zone,
it is characterized in that the method comprises the steps of,
the deep empty area while drilling system comprises a drill rod device and a ground control terminal;
the drill rod device comprises a drill bit, an intelligent probe rod and a communication drill rod assembly;
the intelligent probe rod is vertically connected between the drill bit and the communication drill rod assembly;
the intelligent probe rod is provided with a detection module, and the detection module is used for at least acquiring detection data in the deep empty area;
the communication drill rod assembly comprises at least three communication rods and at least two relay rods which form a communication link, and any relay rod is arranged between two adjacent communication rods;
any of the relay rods transmits respective standard data packets one or more times along the communication link to above the formation;
and the ground control terminal receives the standard data packets sent by at least two relay rods, and evaluates the communication quality of at least part of the communication links according to the loss of the marking data packets.
2. The deep void while drilling system of claim 1,
the standard data packet consists of standard data and numbering information;
and the ground control terminal evaluates the communication quality of the communication link between any two relay rods according to the standard data and the number information.
3. The deep void while drilling system of claim 2,
the ground control terminal acquires the standard data packets sent by any two relay rods;
the ground control terminal confirms a link paragraph of a communication link according to any two pieces of the number information;
and the ground control terminal evaluates the communication quality of the link paragraph according to the two standard data.
4. A deep void while drilling system as claimed in claim 3, wherein,
the ground control terminal confirms the data loss of the standard data according to preset data;
and the ground control terminal evaluates the communication quality of the link paragraph according to the data loss of the two standard data.
5. The deep void while drilling system of claim 4,
and the ground control terminal evaluates the communication quality of the link section according to the comparison of the data loss degree of the two standard data and a loss threshold value.
6. The deep void while drilling system of claim 1,
the ground control terminal generates a first control instruction sent to one or more relay rods below the stratum according to the communication quality of the communication link;
and one or more relay rods adjust the sending strategy of the standard data packet according to the first control instruction.
7. The deep void while drilling system of claim 6,
and one or more relay rods strengthen the sending times and/or the sending frequency of the standard data packets according to the first control instruction.
8. The deep void while drilling system of claim 1,
the standard data packet comprises at least two standard data of each sensor type;
and the ground control terminal evaluates the communication quality of the communication link to the data of different sensor types according to the standard data of each sensor type.
9. The deep void while drilling system of claim 8,
the ground control terminal generates a second control instruction which is sent to one or more relay rods below the stratum according to the communication quality of the sensor type data;
and one or more relay rods adjust redundancy and/or sending strategies of the standard data of each sensor type in the standard data packet according to the second control instruction.
10. Communication quality evaluation method for deep goaf while drilling system
A communication quality evaluation method of a deep empty area while drilling system for emergency rescue of deep engineering disasters,
use of the deep goaf while drilling system of claim 1,
the method is characterized by comprising the following steps of:
any of the relay rods transmits respective standard data packets one or more times along the communication link to above the formation;
and the ground control terminal receives the standard data packets sent by at least two relay rods, and evaluates the communication quality of at least part of the communication links according to the loss of the marking data packets.
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