Intelligent design system for high-position gas extraction drilling

Abstract

The invention discloses a high-position gas extraction drilling intelligent design system, and relates to the technical field of high-position gas extraction, and the technical scheme is characterized in that scene setting is carried out in advance in the system in combination with the actual exploration and measurement condition of a mine and based on an OpenGL technology; five drilling parameters mainly influencing high gas extraction are preliminarily determined through big data cloud analysis and calculation according to measurement results and national coal mine standards, and three main decision parameters including a horizontal included angle between a drill hole and a return airway, a drill hole dip angle and a drill hole length are accurately designed and obtained according to a high-position drilling parameter calculation system. And simulating and visually demonstrating the moving track of the gas extraction drill bit according to a calculation result, so as to regulate and control drilling parameters in real time and grasp the moving track of the drill bit. Automatic means and scientific basis are provided for high-position gas extraction work, the extraction efficiency is effectively improved, the working intensity of technicians is reduced, and the life safety of operators is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of high-position gas extraction, and more specifically, to an intelligent design system for high-position gas extraction drilling. Background Art

[0002] For a long time, coal resources have occupied a pivotal position in my country's primary energy consumption, but there are many types of disasters in the production process, especially gas accidents, which account for a high proportion of various types of coal mine accidents. They are highly destructive, have great economic losses, and are heavy in casualties. They have become an important factor restricting the development of coal mine safety production in recent years. Various toxic and harmful gases in coal mines are collectively referred to as mine gas, the main component of which is methane, which often accounts for more than 85% of the total. At the same time, gas is a clean and efficient new energy source, but improper emission and extraction will cause serious pollution of the air environment and waste of resources.

[0003] More than 70% of my country's state-owned coal mines are high-gas mines, that is, mines with high gas content, accounting for about 17% of the total number of coal mines in the country. The continuous increase in annual coal production has promoted the improvement of mining technology and the continuous increase in mining depth. The geological structure conditions of high-gas mines are relatively complex and the ground stress is not stable enough. As the mining depth increases, the gas pressure will also increase greatly. The farther the coal seam is from the surface, the greater the gas content, making gas extraction more difficult and the drilling extraction efficiency low, resulting in the existence of large risks such as gas explosions in the mines at all times.

[0004] The rapid economic growth in my country has increased the consumption of coal resources, the mining intensity and depth of mines have increased, and the gas problem caused by underground coal mining has become increasingly prominent. According to ventilation theory, gas is light in weight, easy to diffuse, and has strong permeability. It is easy to pass through the rock layer from the adjacent layer and gather in the goaf in large quantities. The wind flow of the "U"-shaped return mining face enters the return air roadway and the goaf, and the wind flow in the goaf flows back into the return air roadway through the upper part. Because the gas density is smaller than that of air and is affected by the air leakage in the goaf, a large amount of gas is easily accumulated in the upper corner of the working face, resulting in a gas concentration in the upper corner that is much higher than the actual coal mining face. Once the drilling hole distribution and extraction position are improper, it will inevitably cause serious accidents, resulting in casualties, economic losses in coal mines, environmental pollution, and waste of resources.

[0005] With the development of computer technology, the extraction of high-gas has gradually developed and improved in the direction of intelligence. Through the intelligent design system of high-gas extraction drilling designed by our team, we overcome the shortcomings of the existing underground gas extraction drilling hole quantity and location relying on manual experience for allocation, and provide a scientific basis for the standardized, professional, intelligent and timely extraction of gas and other harmful gases, improve gas extraction efficiency, and prevent the occurrence of gas disasters. It is committed to protecting the safety of life and property and ensuring safe production in coal mines.

[0006] Due to the widespread presence of gas underground and its strong destructive power, which seriously threatens the safety of life and property, gas is called the "number one killer" of coal mine safety production. Effective prevention and control of gas disasters has important practical significance for the existing underground coal mining industrial production pattern in my country.

[0007] The occurrence of coal seam gas in central and western my country is characterized by the widespread distribution of single thick coal seams, large total gas reserves, poor coal seam permeability, strong gas adsorption capacity, large differences in coal seam gas content, and high gas outburst intensity. At present, the main technical means to solve the problem of high gas extraction is to use drilling to extract coal seam gas. Therefore, accurate and intelligent pre-design of gas drilling extraction parameters is of great value and significance for improving gas extraction efficiency, reducing resource waste, and reducing the incidence of gas accidents during coal seam mining.

[0008] As gas disasters are more serious in my country, there are many automation and information management software for coal mine enterprises. Similar to this project is the three-dimensional design software for coal mine gas extraction drilling developed based on the 3DMAx software platform.

[0009] In comparison, the high-position gas extraction drilling intelligent design system designed by our team can meet the needs of high-precision parameter design, effectively avoid errors caused by human operation, improve the design efficiency of drilling parameters, and intuitively observe the distribution of boreholes and the status of the drill bit, providing intelligent guidance for gas extraction.

[0010] Sun Kelei and others used the AutoCAD drawing platform to develop a gas extraction drilling design and its inversion system. Through dynamic interaction, a large number of gas extraction drilling measurements and calculations were reduced, which greatly improved the accuracy of gas drilling inversion. However, for complex projects, the use of graphic design cannot well reflect the design ideas and cannot accurately combine with the actual complex situation; the actual site shows that the engineering designers use graphic software to design gas extraction drilling, which is labor-intensive and inefficient, and cannot effectively express the length of the drilling and the end position of the drilling. The visual demonstration of this project can perfectly solve such problems, guide the extraction of gas in the goaf, effectively reduce the gas outflow in the goaf, and prevent the working face and the upper corner from exceeding the limit of gas. To ensure the safe recovery of the working face and the safe production of coal.

[0011] In summary, the following problems exist in the current high-position borehole gas extraction:

[0012] 1) Gas extraction drilling design mainly relies on manual calculation, which is time-consuming, labor-intensive and prone to errors.

[0013] 2) Most of the design software of coal mine design units uses the AutoCAD platform, which cannot vividly guide and simulate actual three-dimensional scenes.

[0014] 3) The extraction drilling design relies on manual experience for allocation, which is not reasonable and accurate enough. Summary of the invention

[0015] The purpose of the present invention is to provide an intelligent design system for high-level gas extraction drilling, which combines the actual exploration and measurement of the mine and performs advance scene settings in the system based on OpenGL technology. According to the measurement results and national coal mine standards, five drilling parameters that mainly affect high-level gas extraction are preliminarily determined through big data cloud analysis and calculation. The three main determining parameters of the horizontal angle between the borehole and the return air lane, the borehole inclination angle and the borehole length are accurately designed according to the high-level drilling parameter calculation system. Then, according to the calculation results, the running trajectory of the gas extraction drill bit is simulated and visualized, so as to achieve real-time regulation of the drilling parameters and grasp the movement trajectory of the drill bit. It provides an automated means and scientific basis for high-level gas extraction, effectively improves the extraction efficiency, reduces the work intensity of technical personnel, and ensures the life safety of operators.

[0016] The above technical objectives of the present invention are achieved through the following technical solutions: an intelligent design system for high-position gas extraction drilling, the system comprising:

[0017] Mine actual condition setting system: used to simulate the real underground environment;

[0018] Drilling parameter calculation system: perform data analysis to determine initial parameters and accurately design different drilling parameters;

[0019] Visual demonstration system: used to simulate the distribution of drilling holes and the running trajectory of the drill bit.

[0020] The present invention is further configured as follows: the actual mine condition setting system uses existing measuring devices to basically determine the geological conditions of the part that needs to be extracted gas and inputs relevant parameters into the system. Then the system generates a 3D model that is highly similar to the actual mine based on three-dimensional geological modeling and OpenGL technology, which is convenient for operators to observe and correct.

[0021] The present invention is further configured as follows: the drilling parameter calculation system obtains the horizontal distance Y between the drilling end point and the opening point, the horizontal projection length X of the drilling in the wind direction, and the height H between the drilling end point and the coal seam roof according to the actual situation of the mine, and after these initial values ​​and the coal seam inclination α, the horizontal distance D between the drilling opening point and the return air lane, and the horizontal distance S between the drilling opening point and the return air lane are designed in advance and input into the program, the high-position drilling parameter calculation program calculates the three decisive values ​​of the horizontal angle γ between the drilling hole and the return air lane, the drilling inclination β, and the drilling length L according to the theoretical reference formula through data calculation and analysis;

[0022] The calculation formula of the horizontal angle γ between the borehole and the return air channel is as follows:

[0023]

[0024] The calculation formula of drilling inclination angle β is as follows:

[0025]

[0026] The calculation formula for drilling length L is as follows:

[0027]

[0028] The present invention is further configured as follows: the visualization demonstration system sets the system according to the actual conditions of the mine and the results obtained by the drilling parameter calculation system, uses scientific computing and visualization technology combined with software to establish a simulation operation model, and after performing data analysis, clearly demonstrates the operation trajectories of different drill bits and the overall drilling position distribution.

[0029] In summary, the present invention has the following beneficial effects:

[0030] 1) The design of traditional high-level gas extraction boreholes mainly relies on manual field measurements and calculations for high-level gas extraction design. The intelligent design system for high-level gas extraction boreholes provided by the present invention reduces the manual calculation process, reasonably simulates the actual environment in advance, accurately obtains a variety of required parameters, and the design system has high flexibility, is convenient for data modification and optimization, and quickly and efficiently gives design results, saving manpower and material resources.

[0031] 2) After the traditional high-position gas extraction drilling design, it is not possible to intuitively and finely see the size of the drilling hole and the distribution position of the drilling hole, while the intelligent design system for high-position gas extraction drilling provided by the present invention adds a visual demonstration part, which intuitively reflects the distribution position of the drilling hole and the simulated operation of the drill bit, and can express the design results concisely and clearly, which is convenient for subsequent design operations, corrections, etc., and has high operability for subtle problems.

[0032] 3) The system visualization module can realize accurate data analysis and simulation, provide a clear interface that is relatively accurate and easy to operate and change, and combine it with the actual situation to generate a better drilling distribution configuration plan and drill bit operation trajectory simulation.

[0033] 4) Gas has always been a major hidden danger to coal mine safety production, so it is particularly important to carry out comprehensive management of coal mine gas. The most widely used and effective technology at present is drilling gas extraction technology. Gas is extracted and used reasonably as a new energy source. Before high-level drilling gas extraction, operators need to clarify the specific location of the construction borehole, including the horizontal angle between the borehole and the return air channel, the borehole inclination, and the borehole length. It is difficult to guarantee the accuracy of the results when manually calculating according to relevant formulas, and it takes a long time. In order to ensure accurate and efficient gas extraction by high-level drilling, the system program calculation can accurately and quickly obtain relevant parameters to determine the optimal area and distribution of high-level drilling. In the visual demonstration process of the system, gas extraction animation simulation can also be performed to have an intuitive understanding of the distribution of the pre-extraction drilling position.

[0034] 5) The high-position gas extraction drilling intelligent design system can perform parameter calculation and visual demonstration. The parameter calculation can calculate the relevant parameters in real time based on the input values, and then simulate the gas extraction through visual demonstration to intuitively feedback the drilling gas extraction situation under different values, and make timely parameter changes to select the optimal extraction method, providing scientific assistance for the development of gas extraction work and promoting the extraction technology to move towards intelligence and efficiency.

[0035] 6) The intelligent design system can be used to conveniently and quickly calculate numerical values ​​for simulation, and can adjust parameters in a timely manner, avoiding the difficulties caused by inappropriate selection of drilling locations in actual extraction. At the same time, the use of system software calculations reduces labor costs and the time to determine drilling parameters, improves the design efficiency of high-level gas extraction drilling holes, and improves the intelligence and automation level of high-level gas extraction work, effectively improving gas extraction efficiency and greatly promoting the development and utilization of clean energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is the main technical roadmap of the present invention;

[0037] Figure 2 It is a schematic diagram of the calculation program of the present invention;

[0038] Figure 3 It is a partial diagram of data design in an embodiment of the present invention;

[0039] Figure 4 is a diagram of calculation results in an embodiment of the present invention;

[0040] Figure 5 It is the initial interface of the visual demonstration system in the embodiment of the present invention;

[0041] Figure 6 It is the overall composition diagram of the system of the present invention;

[0042] Figure 7It is the overall principle diagram of the system of the present invention;

[0043] Figure 8 is a process diagram of a visual demonstration system in an embodiment of the present invention;

[0044] Fig. 9 It is an overall visual demonstration diagram in an embodiment of the present invention;

[0045] Fig.10 These are the specific parameters and operation trajectory of drilling No. 5 in the embodiment of the present invention. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-10 The present invention is described in further detail.

[0047] Embodiment: A high-level gas extraction drilling intelligent design system, such as Figure 1-10 As shown, it includes a mine actual condition setting system, a high-position drilling parameter calculation program and a visual demonstration system.

[0048] The mine condition setting system uses existing measuring devices to basically determine the geological conditions of the part that needs to be extracted gas and enters relevant parameters into the system. The system then generates a 3D model that is highly similar to the actual mine based on three-dimensional geological modeling and OpenGL technology, which is convenient for operators to observe and correct.

[0049] High-position drilling parameter calculation system:

[0050] 1) The horizontal distance Y between the end point of the borehole and the opening point, the horizontal projection length X of the borehole in the wind direction, and the height H between the end point of the borehole and the coal seam roof are obtained through the actual situation of the mine. After these initial values ​​​​and the coal seam inclination α, the horizontal distance D between the opening point of the borehole and the return air lane, and the horizontal distance S between the opening point of the borehole and the return air lane are designed in advance and input into the program, the high-position drilling parameter calculation program calculates the three decisive values ​​of the horizontal angle γ between the borehole and the return air lane, the borehole inclination β, and the borehole length L through data calculation and analysis based on the theoretical reference formula.

[0051] 2) The system theory reference formula is as follows:

[0052] Horizontal angle γ between the drilling hole and the return air channel:

[0053]

[0054] Drilling inclination angle β:

[0055]

[0056] Drilling length L:

[0057]

[0058] 3) The main page of the calculation program is as follows Figure 2 Shown

[0059] in accordance with Figure 2 The principle in the above can be used to further design the drilling parameters. The data design process is as follows: Figure 3 shown.

[0060] On the right side of this section, a pop-up window will fully explain the actual meaning and design standards of each parameter, which can provide real-time reminders to help operators perform accurate operations. After the parameter design is completed, click Calculate, and the system will generate calculation results for multiple sets of data, among which the horizontal angle γ between the borehole and the return air channel, the borehole inclination angle β, and the borehole length L are the three decisive result values, providing a basis for the subsequent simulation demonstration system. The parameter calculation results are as follows Figure 4 shown.

[0061] There is still a pop-up window on the right side of the calculation part to further explain and limit the parameters, which can remind the operator in real time whether there is unreasonable data, avoid the accumulation of design errors and affect subsequent simulation demonstrations.

[0062] Visual simulation demonstration system:

[0063] 1) According to the actual conditions of the mine, the system is set up and the results of the calculation system are obtained. The simulation operation model is established by combining scientific computing and visualization technology with software. After data analysis, the operation trajectory of different drill bits and the overall drilling position distribution are clearly demonstrated.

[0064] 2) Visual simulation demonstration system such as Figure 5 shown.

[0065] Click Start to perform a visual simulation. The system displays the simulated operation trajectory of the drill bit and the distribution of drilling holes in a given scenario, which can help the operator to clearly locate and perform subsequent operations.

[0066] The actual conditions of the mine are set up to make a system plan:

[0067] The system needs to use existing equipment to complete the preliminary determination of coal mine geological conditions. After inputting specific values ​​or levels of relevant parameters such as coal seam depth, coal seam thickness, coal seam structure, etc. into the setting module, the system will use digital dimensional analysis, three-dimensional geological modeling, etc. and simulate modeling based on OpenGL technology to generate a 3D underground model that is highly similar to the actual environment where gas extraction is required. After the setting is completed, the data can also be deleted and re-modified to model again. The system is relatively agile and easy to operate, which can effectively reduce the workload and ensure the accuracy of the visual demonstration.

[0068] The calculation basis of the high-position drilling parameter calculation system:

[0069] 1) Before making the calculation, the following should be clearly determined:

[0070] (1) The actual conditions of the coal mine, such as the distribution characteristics of the "three zones" of the overburden in the main mining face, the step distance of the pressure, and the distribution range of the overburden fracture zone.

[0071] (2) National regulations on gas extraction, such as the Basic Indicators for Coal Mine Gas Extraction.

[0072] (3) Relevant operating parameters of the selected drilling rig, etc. Determine the relevant initial parameters of the high-position drilling site and the borehole and the layout of the drilling site.

[0073] 2) According to the above standards and in combination with the actual conditions of different mines, the parameters are preliminarily determined and filled in the table. The program can calculate multiple sets of values ​​simultaneously in one operation, that is, the basic parameters of multiple drilling holes can be set and calculated at the same time. Multiple sets of values ​​can also be deleted and modified at any time. The operator can compare and correct the calculation results in real time, which greatly avoids the errors of manual calculation and design, and improves work efficiency and the degree of design automation and intelligence.

[0074] Calculation process and functions of high-position drilling parameter calculation system:

[0075] The main calculation and principle of this system are as follows Figure 7 As shown, the system uses a data language algorithm to input known data in the specified interface for preliminary data collection, and can perform accurate calculations and quickly obtain the final data results of the drilling parameters and determine the three decisive values ​​of the horizontal angle γ between the lower borehole and the return air channel, the drilling inclination angle β and the drilling length L. Compared with other design system interfaces, it is more concise and easy to operate.

[0076] Demonstration basis of the visual demonstration system production plan:

[0077] The visualization demonstration system sets the initial settings of the system according to the actual conditions of the mine and the calculation results of the high-gas mine calculation program. It spontaneously collects multi-dimensional material data for background system analysis to obtain the coordinate values ​​of multiple drilling points in a given three-dimensional space to preliminarily determine the drilling points on the well wall, and then simulates and generates the drill bit operation trajectory curve to accurately determine the drilling point and vividly display the drill bit operation status. At the same time, the visualization simulation results will change with the change of design parameters, intuitively and concisely simulate the drilling and extraction process to coal mine technicians, further display the results of the drilling parameter design system, and make preliminary analysis for the actual drilling and extraction work. The simulation results have high reliability, flexibility and accuracy.

[0078] Demonstration process of visual demonstration system production plan:

[0079] 1) The system displays the simulated operation of the drill bit and the distribution of drilling holes in a given scenario, which can help the operator to clearly locate and perform subsequent operations. Figure 8 shown.

[0080] 2) Presentation results section:

[0081] On the left side of the results section is a list of multiple sets of drilling data in the parameter design program system, which helps operators to conduct selective demonstration or overall demonstration for pre-set drilling numbers. The main part can clearly see the distribution of the overall drilling under the given coal seam conditions and the corresponding running trajectories of drill bits with different numbers. For a single drilling simulation demonstration, the image quality is clear, the parameter records are detailed, the scene simulation is realistic and accurate, and the visual demonstration is clear and concise. It provides coal mine operators with accurate data information with extremely geometric characteristics, reduces the workload of technicians, and provides scientific guidance for actual drilling gas extraction work. The overall demonstration results are as follows: Fig. 9 shown.

[0082] The visual demonstration of this system can clearly display the data results while analyzing and simulating the data, and provide an operation plan that is closely integrated with the actual situation. At the same time, it can also separately demonstrate the operation trajectory of a certain number of drill bits, as well as the distribution of drill holes under given mine conditions, such as Fig.10 shown.

[0083] Deviation from actual drilling operation:

[0084] In the current actual construction process of gas extraction drilling, due to the influence of natural, technical and human factors, the actual drilling trajectory often deviates from the designed trajectory, which easily causes the drilling deviation and fails to achieve the expected effective extraction purpose.

[0085] According to the borehole deviation law obtained by the application of this system, the reasons for the borehole deviation are multifaceted, which can be roughly divided into geological, technical and process factors. From the deviation law of the upward borehole along the layer, it can be seen that the probability of the upward deviation of the upward borehole along the layer is greater than the probability of the downward deviation, the probability of the left deviation is less than the probability of the right deviation, and the probability of the trajectory overlap is small (the borehole is deep and easy to deviate). From the deviation law of the downward borehole along the layer, it can be seen that the probability of the downward hole of the downward borehole along the layer is less than the probability of the downward deviation, the probability of the left deviation is less than the probability of the right deviation, and the probability of the trajectory overlap is small (the borehole is deep and easy to deviate). From the deviation law of the upward borehole through the layer, it can be seen that the probability of the upward deviation of the upward borehole through the layer is greater than the probability of the downward deviation, the probability of the left deviation is less than the probability of the right deviation, and the probability of the trajectory overlap accounts for a certain proportion (the borehole is shallow and not easy to deviate). From the deviation law of the downward borehole through the layer, it can be seen that the probability of the upward deviation of the downward borehole through the layer is less than the probability of the downward deviation, the probability of the left deviation is basically the same as the probability of the right deviation, and the probability of the trajectory overlap is small. The angle hedging method is used to correct the deviation. After the correction, the offset distance of the final hole position is greatly reduced.

[0086] According to the above rules, the relevant parameters can be changed and the system can be used again for design simulation to ensure the accuracy and rationality of the data and provide guidance for gas extraction work.

[0087] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An intelligent design system for high-level gas extraction drilling, characterized by: The system comprises: Mine actual condition setting system: used to simulate the real underground environment; Drilling parameter calculation system: perform data analysis to determine initial parameters and accurately design different drilling parameters; Visual demonstration system: used to simulate the distribution of drilling holes and the running trajectory of the drill bit.

2. The high-position gas extraction drilling intelligent design system according to claim 1 is characterized by: The actual mine condition setting system uses existing measuring devices to basically determine the geological conditions of the part that needs to be extracted gas and input relevant parameters into the system. Then the system generates a 3D model that is highly similar to the actual mine based on three-dimensional geological modeling and OpenGL technology, which is convenient for operators to observe and correct.

3. The high-position gas extraction drilling intelligent design system according to claim 1 is characterized by: The drilling parameter calculation system obtains the horizontal distance Y between the drilling end point and the opening point, the horizontal projection length X of the drilling in the wind direction, and the height H between the drilling end point and the coal seam roof through the actual situation of the mine. After these initial values ​​and the coal seam inclination α, the horizontal distance D between the drilling opening point and the return air lane, and the horizontal distance S between the drilling opening point and the return air lane are designed in advance and input into the program, the high-position drilling parameter calculation program calculates the three decisive values ​​of the horizontal angle γ between the drilling hole and the return air lane, the drilling inclination β, and the drilling length L through data calculation and analysis according to the theoretical reference formula; The calculation formula of the horizontal angle γ between the borehole and the return air channel is as follows: The calculation formula of drilling inclination angle β is as follows: The calculation formula for drilling length L is as follows:

4. The high-position gas extraction drilling intelligent design system according to claim 1 is characterized by: The visualization demonstration system uses scientific computing and visualization technology combined with software to establish a simulation operation model based on the results obtained by the actual mine conditions setting system and the drilling parameter calculation system. After data analysis, it clearly demonstrates the operation trajectories of different drill bits and the overall drilling position distribution.

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