Method for determining the wetting radius of coal seam water injection

Abstract

The present application proposes a method, device, electronic device and storage medium for determining a coal seam water injection wetting radius, wherein the method comprises: performing moisture measurement processing on a first drill cutting sample to obtain an initial moisture content corresponding to the first drill cutting sample, performing moisture measurement processing on a second drill cutting sample and a third drill cutting sample to obtain a first moisture content corresponding to the second drill cutting sample and a second moisture content corresponding to the third drill cutting sample, determining an initial moisture increment based on the initial moisture content, the first moisture content and the second moisture content, determining a moisture change fitting coefficient based on the initial moisture increment, determining a water injection wetting radius of the coal seam based on the moisture change fitting parameters and a preset average moisture increment, thereby solving the technical problems of large construction workload, long cycle and low accuracy of the general coal seam water injection wetting radius measurement method in the prior art, thereby realizing coal seam water injection wetting radius measurement with a lower construction workload, and effectively improving the calculation accuracy of the water injection wetting radius.

Description

Technical Field

[0001] The present application relates to the field of coal mining safety technology, and in particular to a method, device, electronic device and storage medium for determining a coal seam water injection wetting radius. Background Art

[0002] At present, coal seam water injection is the most basic and effective dust prevention measure for coal mining working faces. The wetting radius is an important parameter for coal seam water injection. Accurate measurement of the wetting radius is an important basis for determining the water injection parameters.

[0003] In the related art, the measurement of the water injection wetting radius of the coal seam requires the construction of multiple observation boreholes, which requires a large amount of construction and a long period of time. Moreover, as long as the moisture content of the coal seam is measured to be higher than the original moisture content, it is considered to be within the water injection wetting radius.

[0004] In this way, the construction of multiple observation boreholes is large in construction volume and long in construction period, and the coal seam water injection should make the average moisture content increment of the pre-wet coal body in the borehole not less than 1.5%. The existing general coal seam water injection wetting radius measurement method has low calculation accuracy for the specific wetting radius. Summary of the invention

[0005] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0006] To this end, the first purpose of the present application is to propose a method, device, electronic device, storage medium and computer program product for determining the coal seam water injection wetting radius, so as to achieve accurate measurement of coal seam water injection wetting using less observation drilling construction volume, with a small number of construction drilling holes and a short cycle, which effectively improves the measurement efficiency of the coal seam water injection wetting radius and reduces the measurement cost. The measured data and fitting algorithm are used to measure and calculate the coal seam water injection wetting radius, thereby effectively improving the measurement accuracy of the coal seam water injection wetting radius.

[0007] The second objective of the present application is to provide a device for determining the wetting radius of coal seam water injection.

[0008] The third objective of the present application is to provide an electronic device.

[0009] A fourth objective of the present application is to provide a computer-readable storage medium.

[0010] A fifth object of the present application is to provide a computer program product.

[0011] To achieve the above-mentioned purpose, the first aspect of the present application proposes a method for determining the water injection wetting radius of a coal seam, including: drilling a coal wall based on a drilling rig to obtain a water injection borehole, and when the drilling depth of the water injection borehole reaches a first preset depth, obtaining a first drill cutting sample on the drilling rig; measuring the moisture content of the first drill cutting sample to obtain an initial moisture content corresponding to the first drill cutting sample; obtaining a second drill cutting sample at a first preset depth of a first observation borehole and a third drill cutting sample at a first preset depth of a second observation borehole; measuring the moisture content of the second drill cutting sample and the third drill cutting sample respectively to obtain a first moisture content corresponding to the second drill cutting sample and a second moisture content corresponding to the third drill cutting sample; determining an initial moisture increment based on the initial moisture content, the first moisture content, and the second moisture content; determining a moisture change fitting coefficient based on the initial moisture increment, wherein the moisture change fitting coefficient is used to describe the change in the moisture increment of the coal seam as the distance between the first observation borehole and the second observation borehole and the water injection borehole increases; determining the water injection wetting radius of the coal seam based on the moisture change fitting parameter and the preset average moisture increment.

[0012] To achieve the above-mentioned purpose, the second embodiment of the present application proposes a device for determining the wetting radius of coal seam water injection, including: a first processing module, used to perform drilling construction processing on the coal wall based on a drilling rig to obtain a water injection borehole, and when the drilling depth of the water injection borehole reaches a first preset depth, obtain a first drill cutting sample on the drilling rig; a second processing module, used to perform moisture measurement processing on the first drill cutting sample to obtain an initial moisture content corresponding to the first drill cutting sample; an acquisition module, used to obtain a second drill cutting sample at the first preset depth of the first observation borehole and a third drill cutting sample at the first preset depth of the second observation borehole; a third processing module, used to respectively perform moisture measurement processing on the second drill cutting sample and the third drill cuttings sample are subjected to moisture measurement processing to obtain a first moisture content corresponding to the second drill cuttings sample and a second moisture content corresponding to the third drill cuttings sample; a first determination module is used to determine an initial moisture increment based on the initial moisture content, the first moisture content and the second moisture content; a second determination module is used to determine a moisture change fitting coefficient based on the initial moisture increment, wherein the moisture change fitting coefficient is used to describe the change in moisture increment of the coal seam as the distance between the first observation borehole and the second observation borehole and the water injection borehole increases; a third determination module is used to determine the water injection wetting radius of the coal seam based on the moisture change fitting parameters and a preset average moisture increment.

[0013] To achieve the above-mentioned purpose, the third aspect embodiment of the present application proposes an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the method for determining the coal seam water injection wetting radius proposed in the first aspect embodiment of the present application.

[0014] To achieve the above-mentioned purpose, the fourth aspect embodiment of the present application proposes a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, it implements the method for determining the coal seam water injection wetting radius proposed in the first aspect embodiment of the present application.

[0015] To achieve the above-mentioned purpose, the fifth aspect embodiment of the present application proposes a computer program product. When the instructions in the computer program product are executed by a processor, the method for determining the coal seam water injection wetting radius proposed in the first aspect embodiment of the present application is executed.

[0016] The present application provides a method, device, electronic device and storage medium for determining the wetting radius of coal seam water injection, wherein a water injection borehole is obtained by drilling a coal wall based on a drilling rig, and when the drilling depth of the water injection borehole reaches a first preset depth, a first drill cutting sample on the drilling rig is obtained, and a moisture measurement process is performed on the first drill cutting sample to obtain an initial moisture content corresponding to the first drill cutting sample, and a second drill cutting sample at the first preset depth of the first observation borehole and a third drill cutting sample at the first preset depth of the second observation borehole is obtained, and a moisture measurement process is performed on the second drill cutting sample and the third drill cutting sample, respectively, to obtain a first moisture content corresponding to the second drill cutting sample and a second moisture content corresponding to the third drill cutting sample. The initial moisture content is determined according to the initial moisture content, the first moisture content and the second moisture content. The moisture change fitting coefficient is determined according to the initial moisture increment, wherein the moisture change fitting coefficient is used to describe the change of the moisture increment of the coal seam with the increase of the distance between the first observation borehole and the second observation borehole and the water injection borehole. The water injection wetting radius of the coal seam is determined according to the moisture change fitting parameters and the preset average moisture increment, which solves the technical problems of large construction amount, long cycle and low accuracy of the general coal seam water injection wetting radius measurement method in the prior art, and realizes the measurement of the coal seam water injection wetting radius with a lower construction amount, effectively improving the calculation accuracy of the water injection wetting radius.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A schematic flow chart of a method for determining a coal seam water injection wetting radius provided in an embodiment of the present application;

[0020] Figure 2 This is a schematic diagram of the measurement process of the coal seam water injection wetting radius provided in the embodiment of the present application.

[0021] Figure 3 A schematic flow chart of another method for determining the wetting radius of coal seam water injection provided in an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of drilling distribution provided in an embodiment of the present application;

[0023] Figure 5 It is a schematic diagram of the borehole moisture increment fitting provided in the embodiment of the present application;

[0024] Figure 6 A schematic diagram of the structure of a device for determining the wetting radius of coal seam water injection provided in an embodiment of the present application; and

[0025] Figure 7 A structural schematic diagram of another method for determining the coal seam water injection wetting radius provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0027] The following describes the method and device for determining the coal seam water injection wetting radius according to an embodiment of the present application with reference to the accompanying drawings.

[0028] Figure 1 A schematic flow chart of a method for determining a coal seam water injection wetting radius provided in an embodiment of the present application.

[0029] In the related art, the measurement of the wetting radius of coal seam water injection requires the construction of multiple observation boreholes, which is large in construction volume and long in cycle. As long as the moisture content of the coal seam is measured to be higher than the original moisture content, it is considered to be within the water injection wetting radius. In this way, the construction of multiple observation boreholes is large in construction volume and long in cycle. In addition, coal seam water injection should make the average moisture content increment of the pre-wetted coal body in the borehole not less than 1.5%. The existing general coal seam water injection wetting radius measurement method has low calculation accuracy for the specific wetting radius.

[0030] To address this problem, the present application provides a method for determining the water injection wetting radius of a coal seam, so as to achieve the measurement of the water injection wetting radius of a coal seam with a relatively low construction volume, and effectively improve the calculation accuracy of the water injection wetting radius. Figure 1 As shown, the method for determining the coal seam water injection wetting radius includes the following steps:

[0031] S101: Performing drilling construction processing on the coal wall based on a drilling rig to obtain a water injection borehole, and when the drilling depth of the water injection borehole reaches a first preset depth, obtaining a first drill cuttings sample on the drilling rig.

[0032] Among them, water injection drilling refers to the drilling hole obtained on the coal wall for injecting water into the coal seam.

[0033] The first preset depth refers to a preset depth value of a water injection borehole for sampling before water injection, and the value of the first preset depth can be adaptively set according to the actual situation of the coal seam.

[0034] The first drill cuttings sample refers to the coal seam drill cuttings obtained after sampling and collecting the coal seam debris on the drilling rig at a first preset depth.

[0035] In the embodiment of the present application, a first preset depth L can be set according to the actual situation of the coal seam, and then a drilling construction treatment is performed on the coal wall for which the coal seam water injection wetting radius is to be measured based on a drilling rig, and a water injection borehole is drilled with a drilling rig, and the borehole is vertical to the coal wall until the borehole depth reaches the first preset depth L, to obtain a preliminary water injection borehole, wherein a dry drilling process is adopted from the start of the construction treatment to the construction period when the borehole depth reaches the first preset depth L, and when the construction reaches the first preset depth L, a drill cuttings sample on the drilling rig is taken, and the drill cuttings sample taken can be used as the first drill cuttings sample.

[0036] S102: performing moisture measurement processing on the first drill cuttings sample to obtain an initial moisture content corresponding to the first drill cuttings sample.

[0037] The initial moisture content refers to the moisture content value obtained after measuring the moisture content in the first drill cuttings sample.

[0038] In the embodiment of the present application, when the drilling depth of the water injection borehole reaches the first preset depth, after obtaining the first drill cuttings sample on the drilling rig, the first drill cuttings sample can be measured for moisture to obtain the initial moisture content corresponding to the first drill cuttings sample.

[0039] In an embodiment of the present application, when the moisture content of the first drill cuttings sample is measured and processed to obtain the initial moisture content corresponding to the first drill cuttings sample, a drying method, a rapid moisture meter method, a horizontal drying method, an oven drying method, etc. can be used to measure the moisture. Among these moisture content measurement methods, adaptive selection can be made based on the actual needs of the drill cuttings sample, equipment conditions, and sample characteristics. Before measuring the moisture content of the first drill cuttings sample, ensure that the method used is accurate and reliable, and operate in accordance with the method requirements, or any other suitable moisture measurement method can be used to measure the moisture of the first drill cuttings sample, without limitation.

[0040] S103: Acquire a second drill cutting sample at a first preset depth of the first observation borehole and a third drill cutting sample at the first preset depth of the second observation borehole.

[0041] Among them, the first observation borehole refers to the observation borehole obtained after the drilling construction processing based on the drilling rig on the left side of the water injection borehole. The relevant data values ​​for determining the water injection wetting radius of the coal seam can be collected through the first observation borehole.

[0042] Among them, the second observation borehole refers to the observation borehole obtained after the drilling construction is carried out by the drilling rig on the right side of the water injection borehole. The relevant data values ​​for determining the water injection wetting radius of the coal seam can be collected through the second observation borehole.

[0043] In an embodiment of the present application, after obtaining the first drill cuttings sample when the water injection borehole reaches the first preset depth, the water injection borehole can continue to be drilled until the depth of the water injection borehole reaches a depth value that can be injected with water, and then drilling construction can be performed on both sides of the water injection borehole at equal intervals to obtain multiple observation boreholes, and the drilling depths of the multiple observation boreholes are all the first preset depth, wherein the observation borehole located on the left side of the water injection borehole is used as the first observation borehole, and the observation borehole located on the right side of the water injection borehole is used as the second observation borehole, and then the drill cuttings on the drill rig of the first observation borehole at the first preset depth can be collected as the second drill cuttings sample, and the drill cuttings on the drill rig of the second observation borehole at the first preset depth can be collected as the third drill cuttings sample.

[0044] S104: performing moisture measurement processing on the second drill cuttings sample and the third drill cuttings sample respectively to obtain a first moisture content corresponding to the second drill cuttings sample and a second moisture content corresponding to the third drill cuttings sample.

[0045] The first moisture content refers to the moisture content value obtained after measuring the moisture contained in the second drill cuttings sample.

[0046] The second moisture content refers to the moisture content value obtained after measuring the moisture contained in the third drill cuttings sample.

[0047] In the embodiment of the present application, after obtaining the second drill cuttings sample at the first preset depth of the first observation borehole and the third drill cuttings sample at the first preset depth of the second observation borehole, the moisture content of the second drill cuttings sample and the third drill cuttings sample can be measured and processed respectively to obtain a first moisture content corresponding to the second drill cuttings sample and a second moisture content corresponding to the third drill cuttings sample. Accordingly, the measurement method can be a drying method, a rapid moisture meter method, a horizontal drying method, an oven drying method, etc. for moisture measurement. Among these moisture content measurement methods, adaptive selection can be made according to the actual needs of the drill cuttings samples, equipment conditions, and sample characteristics. Before measuring the moisture content of the second drill cuttings sample and the third drill cuttings sample, ensure that the method used is accurate and reliable, and operate in accordance with the method requirements. Alternatively, any other suitable moisture measurement method can be used to measure the moisture of the second drill cuttings sample and the third drill cuttings sample, without limitation. After measurement, the first moisture content corresponding to the second drill cuttings sample and the second moisture content corresponding to the third drill cuttings sample are obtained.

[0048] S105: Determine an initial moisture increment according to the initial moisture content, the first moisture content and the second moisture content.

[0049] Among them, the initial moisture increment refers to the moisture content value that can be used to identify the increase in moisture content of the coal seam after water injection treatment.

[0050] After obtaining the initial moisture content of the first drill cuttings sample, the first moisture content of the second drill cuttings sample, and the second moisture content of the third drill cuttings sample through the above-mentioned measurements, the embodiment of the present application can determine the initial moisture increment based on the initial moisture content, the first moisture content, and the second moisture content.

[0051] In the implementation of the present application, when determining the initial moisture increment according to the initial moisture content, the first moisture content and the second moisture content, a calculation expression for the initial moisture increment with respect to the initial moisture content, the first moisture content and the second moisture content can be introduced. The calculation expression can be W d =(W Ln +W Rn ) / 2-W0, where W d represents the initial moisture increment, W Ln Represents the first moisture content, W Rn represents the second moisture content, W0 represents the initial moisture content, and the specific values ​​of the initial moisture content, the first moisture content and the second moisture content are entered into the calculation expression W d =(W Ln +W Rn ) / 2-W0 is used for calculation to obtain the initial moisture increment.

[0052] S106: Determine a moisture change fitting coefficient based on the initial moisture increment, wherein the moisture change fitting coefficient is used to describe the change of the moisture increment of the coal seam as the distance between the first observation borehole and the second observation borehole and the water injection borehole increases.

[0053] The moisture change fitting coefficient is used to describe the change of moisture increment as the distance between the observation borehole and the water injection borehole increases, and the observation borehole includes: a first observation borehole and a second observation borehole.

[0054] In the embodiment of the present application, after determining the initial moisture increment according to the initial moisture content, the first moisture content and the second moisture content, the moisture change fitting coefficient is determined according to the initial moisture increment.

[0055] In the embodiment of the present application, when determining the moisture change fitting coefficient according to the initial moisture increment, a linear fitting method can be used to fit the moisture increment W d and the relationship between the distance X from the observation borehole to the water injection hole, W d =aX+b, determine the coefficients a and b, substitute multiple initial moisture increments into the above formula for calculation and processing to solve the values ​​of coefficients a and b, then the obtained coefficients a and b can be used as moisture change fitting coefficients.

[0056] S107: Determine the water injection wetting radius of the coal seam according to the moisture change fitting parameter and the preset average moisture increment.

[0057] The preset average moisture increment refers to the average moisture content increment of the coal body pre-wetted in the borehole by water injection into the coal seam set according to relevant regulations. The preset average moisture increment can be set to 1.5%.

[0058] In the implementation of this application, when determining the water injection wetting radius of the coal seam according to the moisture change fitting parameters and the preset average moisture increment, the average moisture increment is calculated. Among them, M represents the average moisture content increment (initial moisture increment), the unit is %, r represents the water injection wetting radius, the unit is m, x represents the distance from the water injection hole, the unit is m, a, b represent the fitting coefficients of the water content increment as the distance from the water injection hole changes. According to relevant regulations, the average moisture content increment of the pre-wet coal body in the borehole should not be less than 1.5% after water injection in the coal seam. Then, the calculation expression determined above can be used. Assign a value of 1.5% to M and perform calculation processing to obtain the water injection wetting radius r of the coal seam.

[0059] For example, Figure 2 As shown, Figure 2It is a schematic diagram of the measurement process of the wet radius of the coal seam water injection provided in the embodiment of the present application. First, a water injection borehole is constructed: a water injection borehole is drilled with a drilling rig, the borehole is vertical to the coal wall, and a dry drilling process is used between the borehole depth L. When the construction reaches the depth L, a drill cutting sample is taken, and the drilling is continued to be constructed to a predetermined depth. The moisture content of the drill cutting sample is measured as the original moisture content of the coal seam. The coal seam is injected with water at the water injection port according to the designed water injection parameters. After the water injection is completed, a number of observation boreholes L1 to L1 are constructed at equal intervals on both sides of the water injection hole. n (n on the left), R1 to R n (n on the right), using dry drilling technology, drilling depth L, taking drill cuttings samples from the observation borehole L position, experimentally measuring the moisture content of the coal seam after water injection, calculating the average moisture increment of the boreholes at the same distance on the left and right sides, discarding the abnormal data with moisture increment close to 0 and negative numbers, using linear fitting method, fitting the relationship between moisture increment and the distance from the observation borehole to the water injection hole, determining the fitting coefficient, calculating the average moisture increment, so that the average moisture content increment of the pre-wetted coal body in the borehole shall not be less than 1.5%, assigning the average moisture increment a value of 1.5%, and calculating the water injection wetting radius.

[0060] In this embodiment, a water injection borehole is obtained by drilling a coal wall based on a drilling rig. When the drilling depth of the water injection borehole reaches a first preset depth, a first drill cutting sample on the drilling rig is obtained, and a moisture measurement process is performed on the first drill cutting sample to obtain an initial moisture content corresponding to the first drill cutting sample. A second drill cutting sample at the first preset depth of the first observation borehole and a third drill cutting sample at the first preset depth of the second observation borehole are obtained, and moisture measurement processes are performed on the second drill cutting sample and the third drill cutting sample, respectively, to obtain a first moisture content corresponding to the second drill cutting sample and a second moisture content corresponding to the third drill cutting sample. According to the initial moisture content, the first moisture content, and the second moisture content, it is determined An initial moisture increment is determined, and a moisture change fitting coefficient is determined according to the initial moisture increment, wherein the moisture change fitting coefficient is used to describe the change in the moisture increment of the coal seam as the distance between the first observation borehole and the second observation borehole and the water injection borehole increases; the water injection wetting radius of the coal seam is determined according to the moisture change fitting parameters and the preset average moisture increment; the water injection wetting radius of the coal seam can be accurately measured with less observation drilling construction volume, the number of construction boreholes is small, the cycle is short, and the measurement efficiency of the water injection wetting radius of the coal seam is effectively improved, and the measurement cost is reduced; the measured data and the fitting algorithm are used to measure and calculate the water injection wetting radius of the coal seam, thereby effectively improving the measurement accuracy of the water injection wetting radius of the coal seam.

[0061] This embodiment provides another method for determining the wetting radius of coal seam water injection. Figure 2 A flow chart of another method for determining the wetting radius of coal seam water injection provided in an embodiment of the present application.

[0062] like Figure 3As shown, the method for determining the coal seam water injection wetting radius may include the following steps:

[0063] S301: Performing drilling construction processing on the coal wall based on a drilling rig to obtain a water injection borehole, and when the drilling depth of the water injection borehole reaches a first preset depth, obtaining a first drill cuttings sample on the drilling rig.

[0064] For the detailed description of S301 , please refer to the above embodiment, which will not be repeated here.

[0065] S302: Performing drilling construction processing on the water injection borehole until the depth of the water injection borehole reaches a second preset depth, wherein the second preset depth is greater than the first preset depth.

[0066] Among them, the second preset depth refers to the preset drilling depth for water injection into the water injection borehole. The second preset depth is greater than the first preset depth. The second preset depth can be adaptively set according to the actual needs of the coal seam, and there is no restriction on this.

[0067] In an embodiment of the present application, a water injection borehole is obtained by drilling a coal wall based on a drilling rig. When the drilling depth of the water injection borehole reaches a first preset depth, after obtaining a first drill cuttings sample on the drilling rig, the water injection borehole can continue to be drilled, so that the depth of the water injection borehole continues to increase until it reaches a pre-set drilling depth for water injection into the water injection borehole. The depth of the water injection borehole at this time is the second preset depth.

[0068] S303: performing moisture measurement processing on the first drill cuttings sample to obtain an initial moisture content corresponding to the first drill cuttings sample.

[0069] For the detailed description of S303, please refer to the above embodiment, which will not be repeated here.

[0070] S304: Perform coal seam water injection treatment on the water injection borehole according to preset water injection parameters.

[0071] Among them, the preset water injection parameters refer to some key parameters used to describe the water injection process in coal seam water injection. The preset water injection parameters may include: water injection speed, water injection pressure, water injection time and water injection method, etc., or may also include any other key parameters used for coal seam water injection treatment, without limitation.

[0072] In an embodiment of the present application, the water injection speed, water injection pressure, water injection time and water injection method can be first obtained as preset water injection parameters, and then the coal seam is injected with water from the water injection borehole according to the key description of the coal seam water injection process by the preset water injection parameters until the water injection is completed. Among them, the selection and control of these water injection parameters are very important for the effectiveness and reliability of the coal seam water injection experiment. Different water injection parameters will have different effects on the wetting radius, permeability, etc. of the coal seam, and can be adaptively selected and adjusted according to the actual application scenario.

[0073] S305: After the water injection process is completed, drilling construction is performed on both sides of the water injection borehole to obtain a first observation borehole and a second observation borehole, wherein the first observation borehole is on the left side of the water injection borehole and the second observation borehole is on the right side of the water injection borehole.

[0074] Optionally, in some embodiments, the number of the first observation boreholes is multiple, the number of the second observation boreholes is multiple, the spacing between the multiple first observation boreholes is equal, and the spacing between the multiple second observation boreholes is equal.

[0075] In the embodiment of the present application, after the water injection borehole is subjected to coal seam water injection treatment according to the preset water injection parameters, a plurality of observation boreholes L1 to L2 may be constructed at equal intervals on both sides of the water injection hole. n (n on the left), and R1 to R n (n holes on the right), using dry drilling technology, the drilling depth is the first preset depth, then the n observation holes on the left can be used as the first observation holes, and the n holes on the right can be used as the second observation holes. For example, Figure 4 As shown, Figure 4 It is a schematic diagram of drilling distribution provided in an embodiment of the present application.

[0076] S306: Acquire a second drill cutting sample at the first preset depth of the first observation borehole and a third drill cutting sample at the first preset depth of the second observation borehole.

[0077] S307: performing moisture measurement processing on the second drill cuttings sample and the third drill cuttings sample respectively to obtain a first moisture content corresponding to the second drill cuttings sample and a second moisture content corresponding to the third drill cuttings sample.

[0078] For the detailed description of S306 and S307, please refer to the above embodiments, which will not be repeated here.

[0079] S308: Determine the initial moisture increment according to the initial moisture content, the first moisture content, and the second moisture content.

[0080] Optionally, in some embodiments, when determining the initial moisture increment based on the initial moisture content, the first moisture content and the second moisture content, the first moisture content and the second moisture content can be averaged to obtain a mean processing result, and the initial moisture increment can be determined based on the mean processing result and the initial moisture content.

[0081] In the embodiment of the present application, when determining the initial moisture increment according to the initial moisture content, the first moisture content and the second moisture content, the first moisture content W of the second drill cuttings sample taken from the first observation borehole can be calculated for the first observation borehole and the second observation borehole at the same distance from the two sides of the water injection borehole. Ln and the second moisture content W of the third drill cuttings sample taken from the second observation borehole Rn Perform mean processing to obtain the mean processing result Processing results according to the mean and the initial moisture content W0, determine the initial moisture increment.

[0082] Optionally, in some embodiments, when determining the initial moisture increment based on the mean processing result and the initial moisture content, the mean processing result and the initial moisture content may be difference processed to obtain a difference processing result, and the difference processing result may be used as the initial moisture increment.

[0083] In the embodiment of the present application, when determining the initial moisture increment according to the mean processing result and the initial moisture content, the mean processing result can be Subtract the initial moisture content W0 to obtain the result of the subtraction The difference result is taken as the initial moisture increment

[0084] S309: Determine a moisture change fitting coefficient based on the initial moisture increment, wherein the moisture change fitting coefficient is used to describe the change of the moisture increment of the coal seam as the distance between the first observation borehole and the second observation borehole and the water injection borehole increases.

[0085] Optionally, in some embodiments, the number of initial moisture increments is multiple, wherein when determining the moisture change fitting coefficient based on the initial moisture increments, the multiple initial moisture increments can be linearly fitted to obtain a relationship expression of the initial moisture increment with respect to the distance between the observation borehole and the water injection borehole, wherein the observation borehole includes: a first observation borehole and a second observation borehole, and a first fitting parameter and a second fitting parameter are determined based on the relationship expression, and the first fitting parameter and the second fitting parameter are used as the moisture change fitting coefficient.

[0086] In the embodiment of the present application, the number of initial moisture increments is multiple. When determining the moisture change fitting coefficient according to the initial moisture increments, linear fitting processing can be performed on the multiple initial moisture increments to obtain a relationship expression of the initial moisture increment with respect to the distance between the observation borehole and the water injection borehole, and the relationship expression is W d =aX+b, where the initial water increment W d is the initial moisture increment, a is the first fitting parameter and b is the second fitting parameter, the relationship expression is solved to obtain the first fitting parameter a and the second fitting parameter b, and the first fitting parameter and the second fitting parameter are used as the moisture change fitting coefficients. For example, Figure 5 As shown, Figure 5 It is a schematic diagram of the borehole moisture increment fitting provided in an embodiment of the present application.

[0087] Optionally, in some embodiments, before performing linear fitting processing on multiple initial moisture increments to obtain a relationship expression of the initial moisture increment with respect to the distance between the observation borehole and the water injection borehole, abnormal moisture increments among the multiple initial moisture increments are removed, wherein the abnormal moisture increments include: initial moisture increments with values ​​close to 0, and initial moisture increments with values ​​that are negative.

[0088] In an embodiment of the present application, before performing linear fitting processing on multiple initial moisture increments to obtain a relationship expression between the initial moisture increment and the distance between the observation borehole and the water injection borehole, initial moisture increments close to 0 and negative values ​​are obtained from the multiple initial moisture increments as abnormal moisture increments, and the abnormal moisture increments among the multiple initial moisture increments are removed.

[0089] S310: Determine the water injection wetting radius of the coal seam according to the moisture change fitting parameter and the preset average moisture increment.

[0090] Optionally, in some embodiments, when determining the water injection wetting radius of the coal seam based on the moisture change fitting parameters and the preset average moisture increment, a calculation expression for the preset average moisture increment with respect to the first fitting parameter, the second fitting parameter, the distance between the observation borehole and the water injection borehole, and the water injection wetting radius can be determined, and the calculation expression can be solved to obtain the water injection wetting radius.

[0091] In the embodiment of the present application, when determining the water injection wetting radius of the coal seam according to the moisture change fitting parameter and the preset average moisture increment, the calculation expression of the preset average moisture increment with respect to the first fitting parameter, the second fitting parameter, the distance between the observation borehole and the water injection borehole, and the water injection wetting radius can be determined: Solve the calculation expression to obtain the water injection wetting radius, where M represents the average moisture content increment (initial moisture increment), in %, r represents the water injection wetting radius, in m, x represents the distance from the water injection hole, in m, a is the first fitting parameter, b is the second fitting parameter, and the first fitting parameter a and the second fitting parameter b represent the fitting coefficients of the water increment as the distance from the observed borehole to the water injection hole changes. Substitute the preset average moisture increment (1.5%), the first fitting parameter a and the second parameter b into the above formula for calculation and processing to solve the water injection wetting radius r.

[0092] In this embodiment, a water injection borehole is obtained by drilling a coal wall based on a drilling rig. When the drilling depth of the water injection borehole reaches a first preset depth, a first drill cutting sample on the drilling rig is obtained, and a moisture measurement process is performed on the first drill cutting sample to obtain an initial moisture content corresponding to the first drill cutting sample. A second drill cutting sample at the first preset depth of the first observation borehole and a third drill cutting sample at the first preset depth of the second observation borehole are obtained, and moisture measurement processes are performed on the second drill cutting sample and the third drill cutting sample, respectively, to obtain a first moisture content corresponding to the second drill cutting sample and a second moisture content corresponding to the third drill cutting sample. According to the initial moisture content, the first moisture content, and the second moisture content, it is determined An initial moisture increment is determined, and a moisture change fitting coefficient is determined according to the initial moisture increment, wherein the moisture change fitting coefficient is used to describe the change in the moisture increment of the coal seam as the distance between the first observation borehole and the second observation borehole and the water injection borehole increases; the water injection wetting radius of the coal seam is determined according to the moisture change fitting parameters and the preset average moisture increment; the water injection wetting radius of the coal seam can be accurately measured with less observation drilling construction volume, the number of construction boreholes is small, the cycle is short, and the measurement efficiency of the water injection wetting radius of the coal seam is effectively improved, and the measurement cost is reduced; the measured data and the fitting algorithm are used to measure and calculate the water injection wetting radius of the coal seam, thereby effectively improving the measurement accuracy of the water injection wetting radius of the coal seam.

[0093] In order to implement the above-mentioned embodiment, the present application also proposes a device for determining the wetting radius of coal seam water injection.

[0094] Figure 6 A schematic structural diagram of a device for determining a coal seam water injection wetting radius provided in an embodiment of the present application.

[0095] like Figure 6 As shown, the coal seam water injection wetting radius determination device 60 comprises:

[0096] The first processing module 601 is used to perform drilling construction processing on the coal wall based on the drilling rig to obtain a water injection borehole, and when the drilling depth of the water injection borehole reaches a first preset depth, obtain a first drill cuttings sample on the drilling rig;

[0097] The second processing module 602 is used to perform moisture measurement processing on the first drill cuttings sample to obtain an initial moisture content corresponding to the first drill cuttings sample;

[0098] An acquisition module 603 is used to acquire a second drill cutting sample at a first preset depth of the first observation borehole and a third drill cutting sample at the first preset depth of the second observation borehole;

[0099] The third processing module 604 is used to perform moisture measurement processing on the second drill cuttings sample and the third drill cuttings sample respectively to obtain a first moisture content corresponding to the second drill cuttings sample and a second moisture content corresponding to the third drill cuttings sample;

[0100] A first determination module 605 is used to determine an initial moisture increment according to the initial moisture content, the first moisture content, and the second moisture content;

[0101] The second determination module 606 is used to determine a moisture change fitting coefficient according to the initial moisture increment, wherein the moisture change fitting coefficient is used to describe the change of the moisture increment of the coal seam as the distance between the first observation borehole and the second observation borehole and the water injection borehole increases;

[0102] The third determination module 607 is used to determine the water injection wetting radius of the coal seam according to the moisture change fitting parameter and the preset average moisture increment.

[0103] Further, in a possible implementation of the embodiment of the present application, the number of initial moisture increments is multiple, wherein the second determination module 606 is specifically configured to:

[0104] Performing linear fitting processing on multiple initial water increments to obtain a relationship expression between the initial water increment and the distance between the observation borehole and the water injection borehole, wherein the observation borehole includes: a first observation borehole and a second observation borehole;

[0105] Determine a first fitting parameter and a second fitting parameter according to the relational expression;

[0106] The first fitting parameter and the second fitting parameter are used as the moisture change fitting coefficients.

[0107] Further, in a possible implementation of the embodiment of the present application, the third determining module 607 is specifically configured to:

[0108] Determine a calculation expression for a preset average moisture increment with respect to a first fitting parameter, a second fitting parameter, a distance between an observation borehole and a water injection borehole, and a water injection wetting radius;

[0109] Solve the calculation expression to obtain the water injection wetting radius.

[0110] Further, in a possible implementation of the embodiment of the present application, the first determining module 605 is specifically configured to:

[0111] Performing mean processing on the first moisture content and the second moisture content to obtain a mean processing result;

[0112] Determine the initial moisture increment based on the mean processing result and the initial moisture content.

[0113] Furthermore, in a possible implementation of the embodiment of the present application, the first determining module 605 is further configured to:

[0114] Perform difference processing on the mean processing result and the initial moisture content to obtain the difference processing result;

[0115] The result of the difference treatment is taken as the initial moisture increment.

[0116] Furthermore, in a possible implementation of the embodiment of the present application, as Figure 7 As shown, Figure 7 It is a structural schematic diagram of another device for determining the wetting radius of coal seam water injection provided by the present application, and also includes:

[0117] Before obtaining a second drill cutting sample at the first preset depth of the first observation borehole and a third drill cutting sample at the first preset depth of the second observation borehole, performing coal seam water injection treatment on the water injection borehole according to preset water injection parameters;

[0118] The fourth processing module 608 is used to perform drilling construction processing on both sides of the water injection borehole after the water injection processing is completed to obtain a first observation borehole and a second observation borehole, wherein the first observation borehole is on the left side of the water injection borehole and the second observation borehole is on the right side of the water injection borehole.

[0119] Furthermore, in a possible implementation of the embodiment of the present application, there are multiple first observation boreholes, there are multiple second observation boreholes, the spacing between the multiple first observation boreholes is equal, and the spacing between the multiple second observation boreholes is equal.

[0120] Furthermore, in a possible implementation of the embodiment of the present application, the drilling construction process is a dry drilling process.

[0121] Further, in a possible implementation of the embodiment of the present application, the second determining module 606 is further configured to:

[0122] Before performing linear fitting processing on multiple initial moisture increments to obtain a relationship expression of the initial moisture increment with respect to the distance between the observation borehole and the water injection borehole, abnormal moisture increments among the multiple initial moisture increments are removed, wherein the abnormal moisture increments include: initial moisture increments with values ​​close to 0 and initial moisture increments with values ​​being negative.

[0123] Furthermore, in a possible implementation of the embodiment of the present application, the device further includes:

[0124] The fifth processing module 609 is used to obtain the first drill cuttings sample on the drilling rig when the drilling depth of the water injection borehole reaches the first preset depth, and then perform drilling construction processing on the water injection borehole until the depth of the water injection borehole reaches the second preset depth, wherein the second preset depth is greater than the first preset depth.

[0125] It should be noted that the above explanation of the embodiment of the method for determining the wetting radius of coal seam water injection is also applicable to the device for determining the wetting radius of coal seam water injection of this embodiment, and will not be repeated here.

[0126] In the embodiment of the present application, a water injection borehole is obtained by drilling a coal wall based on a drilling rig. When the drilling depth of the water injection borehole reaches a first preset depth, a first drill cutting sample on the drilling rig is obtained, and a moisture measurement process is performed on the first drill cutting sample to obtain an initial moisture content corresponding to the first drill cutting sample. A second drill cutting sample at the first preset depth of the first observation borehole and a third drill cutting sample at the first preset depth of the second observation borehole are obtained, and moisture measurement processes are performed on the second drill cutting sample and the third drill cutting sample, respectively, to obtain a first moisture content corresponding to the second drill cutting sample and a second moisture content corresponding to the third drill cutting sample. According to the initial moisture content, the first moisture content, and the second moisture content, Determine the initial moisture increment, and determine the moisture change fitting coefficient based on the initial moisture increment, wherein the moisture change fitting coefficient is used to describe the change in the moisture increment of the coal seam as the distance between the first observation borehole and the second observation borehole and the water injection borehole increases. According to the moisture change fitting parameters and the preset average moisture increment, the water injection wetting radius of the coal seam is determined. It is possible to use less observation drilling construction volume to accurately measure the water injection wetting of the coal seam. The number of construction boreholes is small and the cycle is short, which effectively improves the measurement efficiency of the coal seam water injection wetting radius and reduces the measurement cost. The measured data and the fitting algorithm are used to measure and calculate the coal seam water injection wetting radius, thereby effectively improving the measurement accuracy of the coal seam water injection wetting radius.

[0127] In order to implement the above-mentioned embodiments, the present application also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory to implement the method for determining the coal seam water injection wetting radius provided in the above-mentioned embodiments.

[0128] In order to implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer execution instructions are stored. When the computer execution instructions are executed by a processor, they are used to implement the method for determining the coal seam water injection wetting radius provided in the above embodiments.

[0129] In order to implement the above embodiments, the present application also proposes a computer program product, including a computer program, which, when executed by a processor, implements the method for determining the coal seam water injection wetting radius provided in the above embodiments.

[0130] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in this application are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0131] It should be noted that personal information from users should be collected for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. In addition, such collection / sharing should be carried out after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign the agreement / authorization including authorization of relevant user information before the user uses the function. In addition, any necessary steps should be taken to protect and safeguard access to such personal information data and ensure that others who have access to personal information data comply with its privacy policy and procedures.

[0132] This application is expected to provide an implementation scheme for users to selectively block the use or access of personal information data. That is, this application is expected to provide hardware and / or software to prevent or block access to such personal information data. Once the personal information data is no longer needed, risks can be minimized by limiting data collection and deleting data. In addition, when applicable, personal identifiers are removed from such personal information to protect the privacy of users.

[0133] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0134] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0135] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0136] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0137] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0138] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0139] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0140] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for determining the wetting radius of coal seam water injection, characterized in that: The following steps are involved: Performing drilling construction processing on the coal wall based on the drilling rig to obtain a water injection borehole, and obtaining a first drill cutting sample on the drilling rig when the drilling depth of the water injection borehole reaches a first preset depth; Performing moisture measurement processing on the first drill cuttings sample to obtain an initial moisture content corresponding to the first drill cuttings sample; Acquire a second drill cuttings sample of the first observation borehole at the first preset depth and a third drill cuttings sample of the second observation borehole at the first preset depth; performing moisture measurement processing on the second drill cuttings sample and the third drill cuttings sample respectively to obtain a first moisture content corresponding to the second drill cuttings sample and a second moisture content corresponding to the third drill cuttings sample; determining an initial moisture increment based on the initial moisture content, the first moisture content, and the second moisture content; Determine a moisture change fitting coefficient according to the initial moisture increment, wherein the moisture change fitting coefficient is used to describe the change of the moisture increment of the coal seam as the distance between the first observation borehole and the second observation borehole and the water injection borehole increases; Determining the water injection wetting radius of the coal seam according to the moisture change fitting coefficient and the preset average moisture increment; The number of the initial moisture increments is multiple, wherein determining the moisture change fitting coefficient according to the initial moisture increments includes: Linear fitting is performed on the multiple initial water increments to obtain a relationship expression of the initial water increment with respect to the distance between the observation borehole and the water injection borehole, wherein the relationship expression is W d =aX+b, where W d is the initial moisture increment, a is the first fitting parameter and b is the second fitting parameter, the observation borehole comprises: the first observation borehole and the second observation borehole; Determining a first fitting parameter and a second fitting parameter according to the relational expression; Using the first fitting parameter and the second fitting parameter as the moisture change fitting coefficient; Determining the water injection wetting radius of the coal seam according to the moisture change fitting coefficient and the preset average moisture increment includes: Determine a calculation expression for the preset average moisture increment with respect to the first fitting parameter, the second fitting parameter, the distance between the observation borehole and the water injection borehole, and the water injection wetting radius; Solving the calculation expression to obtain the water injection wetting radius; Among them, the calculation expression of the radius is: , where M represents the average water increment in %, r represents the water injection wetting radius in m, x represents the distance from the water injection borehole in m, a is the first fitting parameter, b is the second fitting parameter, the first fitting parameter a and the second fitting parameter b represent the fitting coefficients of the water increment as the distance from the observed borehole to the water injection borehole changes. Substitute the preset average water increment, the first fitting parameter a and the second parameter b into the above formula for calculation and processing to solve the water injection wetting radius r; Before obtaining the second drill cuttings sample of the first observation borehole at the first preset depth and the third drill cuttings sample of the second observation borehole at the first preset depth, the method further includes: Carrying out coal seam water injection treatment on the water injection borehole according to preset water injection parameters; After the water injection process is completed, drilling construction is performed on both sides of the water injection borehole to obtain the first observation borehole and the second observation borehole, wherein the first observation borehole is on the left side of the water injection borehole and the second observation borehole is on the right side of the water injection borehole.

2. The method according to claim 1, characterized in that The step of determining the initial moisture increment according to the initial moisture content, the first moisture content and the second moisture content comprises: Performing mean processing on the first moisture content and the second moisture content to obtain a mean processing result; The initial moisture increment is determined according to the mean processing result and the initial moisture content.

3. The method according to claim 2, characterized in that The step of determining the initial moisture increment according to the mean processing result and the initial moisture content includes: Performing difference processing on the mean processing result and the initial moisture content to obtain a difference processing result; The result of the subtraction process is used as the initial moisture increment.

4. The method according to claim 1, characterized in that There are multiple first observation boreholes, and there are multiple second observation boreholes. The spacing between the multiple first observation boreholes is equal, and the spacing between the multiple second observation boreholes is equal.

5. The method according to claim 1, characterized in that The drilling construction process is a dry drilling process.

6. The method according to claim 1, characterized in that Before performing linear fitting processing on the multiple initial water increments to obtain a relationship expression of the initial water increment with respect to the distance between the observation borehole and the water injection borehole, the method further includes: Abnormal moisture increments among the plurality of initial moisture increments are removed, wherein the abnormal moisture increments include: initial moisture increments with values ​​close to 0 and initial moisture increments with values ​​being negative.

7. The method according to claim 1, characterized in that When the drilling depth of the water injection borehole reaches a first preset depth, after obtaining a first drill cuttings sample on the drilling rig, the method further includes: The water injection borehole is subjected to drilling construction until the depth of the water injection borehole reaches a second preset depth, wherein the second preset depth is greater than the first preset depth.

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