CN112682039A - Coal seam drilling and water injection construction process - Google Patents
Coal seam drilling and water injection construction process Download PDFInfo
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Abstract
The invention relates to a coal seam drilling and water injection construction process which comprises a pull ring and a mounting rack, wherein an outer sleeve is arranged at the bottom of the pull ring, a water injection unit is sleeved on the outer sleeve and is positioned in the outer sleeve, the mounting rack is of an stool-shaped structure, a limiting groove is formed in the top of the mounting rack, the outer sleeve is positioned in the limiting groove, and the outer sleeve and the mounting rack are in threaded connection. Through threaded connection setting, the effectual water injection unit that has fixed, the articulated setting is connected in the cooperation simultaneously, the angle of adjustment activity gag lever post, form self-locking structure, stability has been increased, well accuse unit confirms the working parameter of water injection unit according to the real-time reference value in coal seam, and after presetting work, reachs the environmental reference value again, confirm the working parameter of water injection unit according to the comparison between the environmental reference value, and according to the comparison of real-time environmental reference value and the environmental reference value of last time when presetting time, reduce the risk of coal seam explosion, improve the water injection efficiency of water injection unit.
Description
Technical Field
The invention relates to the technical field of coal seam water injection, in particular to a coal seam drilling water injection construction process.
Background
The coal mine adopts a cement plugging method, the defects of water leakage, untight plugging, low water pressure, unobvious water injection effect and the like can occur, pressure water injection is carried out on a coal seam, the aim is to change the physical and mechanical properties and the structure of the coal seam through the high-pressure action of pressure water and reduce the impact tendency of the coal seam, and therefore a coal seam drilling water injector is researched and developed, and the water injector mainly has the advantages that the pressure water is injected into a drill through drilling, so that the effects of slag discharge, drilling tool cooling and dust fall are achieved. The existing coal seam water injector has certain problems in use, for example, the water injector is difficult to fix, can scratch and damage pipelines in the use process, increases economic cost, and even can break, thereby not only increasing the working difficulty, reducing the working efficiency and simultaneously bringing certain economic loss.
The current coal seam water injector is when the water injection, adjusts the working parameter of water injector according to the different degree of depth and the real-time coal seam parameter in coal seam, and the water injection is efficient.
Disclosure of Invention
Therefore, the invention provides a coal seam drilling and water injection construction process which is used for solving the problem of low water injection efficiency caused by the fact that the working parameters of a water injector are not adjusted according to different depths and real-time coal seam parameters of a coal seam in the prior art.
In order to achieve the purpose, the invention provides a coal seam drilling and water injection construction process, which comprises the following steps:
step one, a central control unit establishes a real-time coal bed environment matrix W by receiving data detected by a pressure detector, a dust detector and a humidity detector which are arranged at the coal bed drilling and water injection destination in real time;
step two, the central control unit determines an environment adjusting parameter according to the depth of the current coal bed, and calculates a current coal bed real-time environment reference value e1 according to the determined environment adjusting parameter and according to the real-time pressure of the coal bed, the real-time coal dust concentration of the coal bed and the real-time air dryness of the coal bed in the coal bed environment matrix W;
step three, the central control unit determines working parameters of the water injection unit according to the environment reference value and selects corresponding working parameters from a working matrix of the water injection unit;
step four, when the water injection unit works to the corresponding water injection time according to the correspondingly selected water injection flow rate, the central control unit collects data in the real-time coal bed environment matrix and calculates a real-time environment reference value e2, compares the environment reference values e2 with e1, and adjusts the water injection flow rate Vi and the water injection time Ti of the working parameters of the water injection unit according to the comparison result;
step five, if e2 is within the preset range of e1, the central control unit directly adjusts the working parameters of the water injection unit, and if e2 is not within the preset range of e1, the central control unit reacquires the calculated environmental reference value e22, and if e22 is not within the preset range of e2, and if the real-time coal seam environment data of the central control unit is mistakenly acquired, if e22 is within the preset range of e2, the central control unit takes e22 as an environmental reference value to compare with e1 to adjust the water injection unit and operate according to the adjusted working parameters, when the water injection unit works to the water injection time according to the adjusted water injection flow rate, the central control unit calculates the data in the real-time coal bed environment matrix and compares the real-time environment reference value with the previous environment reference value, and adjusts the working parameters of the water injection unit until the water injection work is finished;
in the first step, a coal seam environment matrix W (P, F, S) is obtained, wherein P represents the pressure of the current water injection coal seam, F represents the coal dust concentration of the current water injection coal seam, and S represents the air dryness of the current water injection coal seam;
in the second step, the central control unit calculates an environment reference value e by the following formula,
e＝a×P/P0+b×F/F0+c×(S/S0)
in the formula, a, b and c are environment adjusting parameters, P represents the pressure of the current water injection coal seam, F represents the coal dust concentration of the current water injection coal seam, S represents the air dryness of the current water injection coal seam, P0 represents the preset pressure of the current water injection coal seam, F0 represents the preset coal dust concentration of the current water injection coal seam, and S0 represents the preset air dryness of the current water injection coal seam.
Further, a preset coal seam depth matrix a0 and an environment adjustment parameter matrix B0 are further arranged in the central control unit, and for a preset coal seam depth matrix a0(a1, a2, A3, a4), wherein a1 is a first preset coal seam depth, a2 is a second preset coal seam depth, A3 is a third preset coal seam depth, and a4 is a fourth preset coal seam depth, and the preset coal seam depths are gradually increased in sequence;
for the environment adjusting parameter matrix set B0(B1, B2, B3, B4), where B1 is a first preset environment adjusting parameter, B2 is a second preset environment adjusting parameter, B3 is a third preset environment adjusting parameter, and B4 is a fourth preset environment adjusting parameter, for the ith environment adjusting parameter matrix Bi (ai, Bi, ci), where ai represents the ith preset adjusting value of the pressure, Bi represents the ith preset adjusting value of the coal dust concentration, and ci represents the ith preset adjusting value of the air dryness.
Further, when the central control unit determines the environment reference value e, the central control unit selects a corresponding environment adjustment parameter matrix according to the real-time depth A of the current coal seam,
when A is not more than A1, the central control unit selects a1, B1 and c1 in an environment adjusting parameter matrix B1 to determine an environment reference value e;
when A is greater than A1 and less than or equal to A2, the central control unit selects a2, B2 and c2 in an environment adjusting parameter matrix B2 to determine an environment reference value e;
when A is greater than A2 and less than or equal to A3, the central control unit selects A3, B3 and c3 in an environment adjusting parameter matrix B3 to determine an environment reference value e;
when A is greater than A3 and less than or equal to A4, the central control unit selects a4, B4 and c4 in an environment adjusting parameter matrix B4 to determine an environment reference value e;
when the central control unit selects ai, bi and ci to calculate the environment reference value e, i is 1, 2, 3, 4, e is ai × P/P0+ bi × F/F0+ ci × (S/S0).
Further, an environment reference value matrix E0 and a water injection unit working parameter matrix Z0 are preset in the central control unit, and for an environment reference value matrix E0(E1, E2, E3, E4), where E1 is a first preset environment reference value, E2 is a second preset environment reference value, E3 is a third preset environment reference value, and E4 is a fourth preset environment reference value; for a water injection unit working parameter matrix group Z0(Z1, Z2, Z3 and Z4), wherein Z1 is a first preset water injection unit working reference parameter, Z2 is a second preset water injection unit working reference parameter, Z3 is a third preset water injection unit working reference parameter, and Z4 is a fourth preset water injection unit working reference parameter;
for an ith water injection unit working parameter matrix group Zi (Vi, Ti), wherein Vi represents an ith preset water injection flow rate matrix, Ti represents an ith preset water injection time matrix, and for the ith preset water injection flow rate matrix Vi (V1, V2, V3 and V4), V1 is a first preset water injection unit water injection flow rate, V2 is a second preset water injection unit water injection flow rate, V3 is a third preset water injection unit water injection flow rate, and V4 is a fourth preset water injection unit water injection flow rate;
for the ith preset water injection time matrix Ti (T1, T2, T3, T4), T1 is the water injection time of the first preset water injection unit, T2 is the water injection time of the second preset water injection unit, T3 is the water injection time of the third preset water injection unit, and T4 is the water injection time of the fourth preset water injection unit.
Further, when the central control unit determines the working parameters of the water injection unit according to the environment reference value e1 acquired in real time,
when E1 is not more than E1, the central control unit determines that the working parameter of the water injection unit is Z1, and selects V1 as the water injection flow rate of the water injection unit and T1 as the water injection time of the water injection unit;
when the E1 is larger than E1 and is not larger than E2, the central control unit determines that the working parameter of the water injection unit is Z2, selects V2 as the water injection flow rate of the water injection unit, and selects T2 as the water injection time of the water injection unit;
when the E2 is larger than E1 and is not larger than E3, the central control unit determines that the working parameter of the water injection unit is Z3, selects V3 as the water injection flow rate of the water injection unit, and selects T3 as the water injection time of the water injection unit;
and when the E3 is more than E1 and less than or equal to E4, the central control unit determines that the working parameter of the water injection unit is Z4, and selects V4 as the water injection flow rate of the water injection unit and T4 as the water injection time of the water injection unit.
Further, when the water injection unit operates for a preset time Ti according to the working parameters Zi, the central control unit collects a real-time coal bed environment matrix W and calculates a real-time environment reference value e2, compares e1 with e2 and adjusts the water injection flow rate Vi and the water injection time Ti of the working parameters of the water injection unit according to the comparison result,
when the water injection speed is more than or equal to 0.9 × e1 and e2 is more than e1, the water injection unit works according to the water injection flow rate Vi and the water injection time Ti in the current working parameters;
when the e2 is more than or equal to 0.8 × e1 and less than 0.9 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i-1), and the water injection time is Ti;
when e2 is more than or equal to e1 and less than 1.1 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i +1), and the water injection time is Ti;
when the water injection time is T (i +1), the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to V (i +1) when the e2 is more than or equal to 1.1 × e1 and less than 1.2 × e 1.
Further, when e2 is more than or equal to 1.2 × e1 or e2 is less than 0.8 × e1, the central control unit performs secondary acquisition on the real-time coal bed environment matrix W and calculates a real-time environment reference value e22, compares e22 with e2,
if the e2 is more than or equal to 0.9 × e22 and less than 1.1 × e22, the central control unit adjusts the water injection unit by taking e22 as a real-time environment reference value;
and if the e2 is more than or equal to 1.1 × e22 or the e2 is less than 0.9 × e22, the central control unit judges that the real-time coal seam environment data acquisition is wrong.
Further, when the central control unit compares the real-time environment reference values e22 and e1 and adjusts the water injection flow rate Vi and the water injection time Ti of the working parameters of the water injection unit,
when the water injection speed is more than or equal to 0.9 × e1 and e22 is more than e1, the water injection unit works according to the water injection flow rate Vi and the water injection time Ti in the current working parameters;
when the e22 is more than or equal to 0.8 × e1 and less than 0.9 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i-1), and the water injection time is Ti;
when e22 is more than or equal to e1 and less than 1.1 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i +1), and the water injection time is Ti;
when the e22 is more than or equal to 1.1 × e1 and less than 1.2 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i +1), and the water injection time is T (i + 1);
when e22 is more than or equal to 1.2 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to V4, and the water injection time is T4;
and when e22 is less than 0.8 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i-2), and the water injection time is T (i-1).
Further, if the water injection flow rate of the water injection unit is V1 or V4, the central control unit adjusts the water injection flow rate to be the water injection flow rate before or after the current water injection flow rate sequence, and uses V1 or V4 as the adjusted water injection flow rate; if the water injection time of the water injection unit is T1 or T4, the central control unit adjusts the water injection time to be the water injection time before or after the current water injection time sequence, and takes T1 or T4 as the adjusted water injection time.
Further, a water injection device of coal seam water injection drilling construction technology includes:
the pull ring is provided with an outer sleeve in a welded mode at the bottom, a limiting ring is sleeved on the outer sleeve and is arranged in a hollow circular ring structure, and the limiting ring is used for driving the outer sleeve to rotate;
the mounting frame is of an stool-shaped structure, the mounting frame is arranged below the pull ring, a limiting groove is formed in the top of the mounting frame, the outer sleeve is located in the limiting groove, and the outer sleeve and the mounting frame are in threaded connection and used for supporting the outer sleeve;
the water injection unit is arranged in the outer sleeve, the outer sleeve is sleeved outside the water injection unit, the outer side wall of the water injection unit is provided with a connecting block in a threaded manner, the connecting block is arranged in a hollow circular ring structure, the top of the connecting block is hinged with a movable limiting rod, the number of the movable limiting rods is three, the movable limiting rods are evenly distributed on the connecting block, the output end of the water injection unit is provided with a hollow pipe in a welded manner, a check valve is arranged on the hollow pipe and communicated with the hollow pipe, the free end of the check valve is provided with a flowmeter, the flowmeter is communicated with the hollow pipe, the free end of the hollow pipe is welded and provided with a fixed pipe, the free end of the fixed pipe is provided with a rubber expansion body in a threaded manner, the fixed pipe is communicated with the rubber expansion body, and the free, the water injection unit is used for transmitting water to the water outlet holes of the water outlet pipe sequentially through the hollow pipe, the fixed pipe, the rubber expansion body and the limiting pipe;
and the central control unit is arranged on the mounting frame, establishes a real-time coal bed environment matrix by receiving data detected by a pressure detector, a dust detector and a humidity detector which are arranged at the destination of coal bed drilling water injection in real time, and adjusts water injection parameters.
Compared with the prior art, the method has the advantages that the method determines the environment adjusting parameters of the coal bed according to the depth of the coal bed, calculates the real-time pressure intensity of the coal bed, the real-time coal dust concentration of the coal bed and the real-time air dryness of the coal bed according to the determined environment adjusting parameters to obtain the current coal bed real-time environment reference value e, determines the working parameters of the water injection unit according to the coal bed real-time reference value, re-collects the real-time pressure intensity of the current coal bed, the real-time coal dust concentration of the coal bed and the real-time air dryness of the coal bed when working to the preset working time according to the preset working flow rate of the water injection unit, calculates to obtain the current coal bed real-time environment reference value and compares the current coal bed real-time environment reference value with the previous environment reference value so as to determine the working parameters of the next water injection unit, determines the working parameters of the water injection unit according to the current environment reference value and the previous environment reference, reduce the risk of coal seam explosion, improve the water injection efficiency of water injection unit.
Particularly, when the environment reference value is determined, the pressure, the coal dust concentration and the air dryness of the current water injection coal bed are fully considered, a coal bed depth matrix and an environment adjusting parameter matrix are preset in the central control unit, different environment condition parameters are corresponding to different coal bed depths, different environment condition parameters are corresponding to the real-time depth of the current coal bed, the accuracy of coal bed data statistics is improved, and the water injection efficiency of the water injection unit is further improved.
Furthermore, the central control unit determines the initial working parameters of the water injection unit according to the real-time environment reference value of the current coal seam, establishes a working parameter matrix group of the water injection unit, and corresponds to different working parameters of the water injection unit according to different ranges of the environment reference value, so that the injected water can better permeate into the coal seam, and the floating dust in the air is reduced, thereby reducing the risk of coal seam explosion and further improving the working efficiency of the water injection unit.
In particular, the invention firstly determines the working parameters of the water injection unit according to the environment reference value, when the water injection unit works to the preset water injection time according to the preset water injection flow rate, the central control unit collects the real-time environment reference value, compares the real-time collected environment reference value with the last environment reference value after the error is eliminated, if the working parameters of the water injection unit are within the preset range of the last reference value, the adjustment of the working parameters of the water injection unit is not needed, the effect of gradually improving the environment by water injection of the coal seam is realized, if the real-time environment reference value is more than or equal to 0.8 times and the last environment reference value is less than 0.9 times, the central control unit adjusts the water injection flow rate of the water injection unit to the water injection flow rate before the current water injection flow rate sequence and is the adjusted water injection flow rate, if the real-time environment reference value is more than or equal to the last environment reference value which the last environment reference value is less than 1.1 times, the central control unit adjusts the water injection flow rate of the water injection unit to the adjusted water injection flow rate after the current water injection flow rate sequence, if the real-time environment reference value is greater than or equal to 1.1 times and the last environment reference value is less than 1.2 times and the last environment reference value is greater than or equal to 1.2 times, the central control unit adjusts the water injection flow rate of the water injection unit to the adjusted water injection flow rate after the current water injection flow rate sequence and simultaneously adjusts the water injection time after the current water injection time sequence to the adjusted water injection time,
if the real-time environment reference value is greater than or equal to 1.2 times of the last environment reference value, the central control unit adjusts the water injection flow rate to be V4 and the water injection time to be V4, and if the real-time environment reference value is less than 0.8 times of the last environment reference value, the central control unit adjusts the water injection flow rate of the water injection unit to be two water injection flow rates before the current water injection flow rate sequence to be the adjusted water injection flow rate, and simultaneously adjusts the water injection time before the current water injection time sequence to be the adjusted water injection time, so that the environment in the coal seam is gradually improved through gradual adjustment, the risk caused by severe change of the environment is avoided, the possibility of explosion is reduced, water can gradually permeate in the coal seam, and the water injection efficiency of the water injection unit is further improved.
Particularly, after the water injection unit works at a preset flow rate for a preset time, the central control unit re-determines the environment reference value, compares the environment reference value with the environment reference value determined last time, adjusts the working parameters of the water injection unit if the environment reference value is within a certain range, and performs secondary acquisition on the environment reference value if the environment reference value is not within the certain range, so as to improve the accuracy of the environment reference value and further improve the water injection efficiency of the water injection unit.
Furthermore, the coal seam drilling and water injection construction device effectively fixes the water injection unit through the threaded connection arrangement, meanwhile, the movable limiting rod is matched, connected and hinged to form a self-locking structure, the stability of the water injector is further kept, the stability is improved, the working difficulty is reduced, the working efficiency and the economic benefit are increased, the fixing device can be moved through the installation of the fixing block and the matching of the bolt hole, the moving is convenient, the practicability of the device is improved, and the water injection efficiency of the water injection unit is further improved.
Drawings
FIG. 1 is a schematic structural diagram of a coal seam drilling and water injection construction device according to the present invention;
FIG. 2 is a schematic structural view of a limiting ring of the coal seam drilling and water injection construction device;
fig. 3 is a schematic position relationship diagram of a limiting ring of the coal seam drilling and water injection construction device.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the present invention provides a water injection apparatus for a coal seam water injection drilling construction process, including: the pull ring comprises a pull ring 1, wherein an outer sleeve 3 is welded and installed at the bottom of the pull ring 1, a limiting ring 4 is sleeved on the outer sleeve 3, and the limiting ring 4 is arranged in a hollow circular ring structure and used for enabling the pull ring 1 to drive the outer sleeve 3 to rotate; the mounting frame 5 is of an stool-shaped structure, the mounting frame 5 is arranged below the pull ring 1, a limiting groove 18 is formed in the top of the mounting frame 5, the outer sleeve 3 is located in the limiting groove 18, and the outer sleeve 3 and the mounting frame 5 are in threaded connection and used for supporting the outer sleeve 3; the water injection unit 2 is arranged in the outer sleeve 3, the outer sleeve 3 is sleeved outside the water injection unit 2, the outer side wall of the water injection unit 2 is provided with a connecting block 7 in a threaded manner, the connecting block 7 is arranged in a hollow circular ring structure, the top of the connecting block 7 is hinged with a movable limiting rod 6, the number of the movable limiting rods 6 is three, the three groups of the movable limiting rods are uniformly distributed on the connecting block 7, the output end of the water injection unit 2 is welded and installed with a hollow pipe 8, the hollow pipe 8 is provided with a one-way valve 9, the one-way valve 9 and the hollow pipe 8 are arranged in a communicated manner, the free end of the one-way valve 9 is provided with a flowmeter 10, the flowmeter 10 and the hollow pipe 8 are arranged in a communicated manner, the free end of the hollow pipe 8 is welded and installed with a fixed pipe 13, the free end of the, the free end welded connection of rubber inflation body 14 has spacing pipe 15, the free end of spacing pipe 15 is connected with outlet pipe 16, and outlet pipe 16 is in proper order for the intercommunication setting with spacing pipe 15 and rubber inflation body 14, is provided with apopore 17 on the outlet pipe 16, and apopore 17 evenly distributed is on outlet pipe 16, water injection unit 2 is used for looping through hollow tube 8, fixed pipe 13, rubber inflation body 14, spacing 15 the apopore 17 that transmits to outlet pipe 16 with water.
Specifically, in the embodiment of the present invention, the central control unit is disposed on the mounting frame 5, and is configured to establish a real-time coal seam environment matrix by receiving data detected by a pressure detector, a dust detector, and a humidity detector, which are disposed at a coal seam drilling and water injection destination, in real time, and adjust water injection parameters.
Specifically, in the embodiment of the present invention, the present invention further provides a coal seam drilling water injection construction process, including:
step one, a central control unit establishes a real-time coal bed environment matrix W by receiving data detected by a pressure detector, a dust detector and a humidity detector which are arranged at the coal bed drilling and water injection destination in real time;
step two, the central control unit determines an environment adjusting parameter according to the depth of the current coal bed, and calculates a current coal bed real-time environment reference value e1 according to the determined environment adjusting parameter and according to the real-time pressure of the coal bed, the real-time coal dust concentration of the coal bed and the real-time air dryness of the coal bed in the coal bed environment matrix W;
step three, the central control unit determines working parameters of the water injection unit according to the environment reference value and selects corresponding working parameters from a working matrix of the water injection unit;
step four, when the water injection unit works to the corresponding water injection time according to the correspondingly selected water injection flow rate, the central control unit collects data in the real-time coal bed environment matrix and calculates a real-time environment reference value e2, compares the environment reference values e2 with e1, and adjusts the water injection flow rate Vi and the water injection time Ti of the working parameters of the water injection unit according to the comparison result;
step five, if e2 is within the preset range of e1, the central control unit directly adjusts the working parameters of the water injection unit, and if e2 is not within the preset range of e1, the central control unit reacquires the calculated environmental reference value e22, and if e22 is not within the preset range of e2, and if the real-time coal seam environment data of the central control unit is mistakenly acquired, if e22 is within the preset range of e2, the central control unit takes e22 as an environmental reference value to compare with e1 to adjust the water injection unit and operate according to the adjusted working parameters, when the water injection unit works to the water injection time according to the adjusted water injection flow rate, the central control unit calculates the data in the real-time coal bed environment matrix and compares the real-time environment reference value with the previous environment reference value, and adjusts the working parameters of the water injection unit until the water injection work is finished;
referring to fig. 2-3, the bottom of the mounting frame 5 is welded with four fixing blocks 12, the fixing blocks 12 are arranged in a rectangular array, the fixing blocks 12 are provided with two groups of bolt holes 11, and the bolt holes 11 are correspondingly arranged.
Specifically, in the embodiment of the present invention, the outer sleeve 3 is a hollow cylinder structure, the outer side wall of the outer sleeve 3 is provided with threads, the inner side wall of the limit ring 4 is provided with threads, and the threads on the limit ring 4 are matched with the threads of the outer sleeve 3 and are arranged opposite to each other.
Specifically, in the embodiment of the present invention, an organic assembly is disposed outside the water injection unit 2, and the length of the water injection unit 2 is greater than the length of the outer sleeve 3. The inner side wall of the limiting groove 18 is provided with threads, and the threads of the limiting groove 18 are matched with the threads of the outer sleeve 3 and are arranged oppositely.
Specifically, in the embodiment of the present invention, the limit ring 4 is formed by combining the snap bumps 401 and the moving block 402, the moving block 402 and the snap bumps 401 are connected by welding, and the snap bumps 401 are uniformly distributed on the outer side wall of the moving block 402.
Specifically, in the embodiment of the invention, when the device needs to be used, the outer sleeve 3 is in threaded connection with the mounting frame 5 and the limiting ring 4, the pull ring 1 is rotated, so that the water injection unit 2 is fixed at a proper position, meanwhile, the movable limiting rod 6 is adjusted to a proper angle by matching with the hinged arrangement of the connecting block 7 and the movable limiting rod 6, a self-locking structure is formed, the water injection unit 2 is driven, the check valve 9 is opened, water injection data is monitored through the flowmeter 10, and water injection work is started by matching with the rubber expansion body 14, the water outlet pipe 16 and the water outlet hole 17.
Specifically, in the first step of the present invention, regarding a coal seam environment matrix W (P, F, S), where P denotes a pressure of the current waterflood coal seam, F denotes a coal dust concentration of the current waterflood coal seam, and S denotes an air dryness of the current waterflood coal seam.
Specifically, in the second step, the environment reference value e is calculated as,
e＝a×P/P0+b×F/F0+c×(S/S0)
in the formula, a, b and c are environment adjusting parameters, P represents the pressure of the current water injection coal seam, F represents the coal dust concentration of the current water injection coal seam, S represents the air dryness of the current water injection coal seam, P0 represents the preset pressure of the current water injection coal seam, F0 represents the preset coal dust concentration of the current water injection coal seam, and S0 represents the preset air dryness of the current water injection coal seam.
Specifically, in the embodiment of the present invention, a preset coal seam depth matrix a0 and an environment adjustment parameter matrix B0 are further provided in the central control unit, and for the preset coal seam depth matrix a0(a1, a2, A3, a4), where a1 is a first preset coal seam depth, a2 is a second preset coal seam depth, A3 is a third preset coal seam depth, and a4 is a fourth preset coal seam depth, and the preset coal seam depths are gradually increased in sequence.
In particular, it is clear to the skilled person that more than four parameters may be present in the matrix, and may also be up to Xn, and the present invention does not limit the number of parameters in the matrix, depending on the implementation.
For the environment adjusting parameter matrix set B0(B1, B2, B3, B4), where B1 is a first preset environment adjusting parameter, B2 is a second preset environment adjusting parameter, B3 is a third preset environment adjusting parameter, and B4 is a fourth preset environment adjusting parameter, for the ith environment adjusting parameter matrix Bi (ai, Bi, ci), where ai represents the ith preset adjusting value of the pressure, Bi represents the ith preset adjusting value of the coal dust concentration, and ci represents the ith preset adjusting value of the air dryness.
Specifically, in the embodiment of the present invention, the determination of ai, Bi, and ci in the environment adjustment reference matrix Bi may be fixed values or not, for example, a1 is 0.3, b1 is 0.5, c1 is 0.45, a2 is 0.35, b2 is 0.55, c2 is 0.5, a3 is 0.4, b3 is 0.6, c3 is 0.55, a4 is 0.45, b4 is 0.65, and c4 is 0.6.
Specifically, in the embodiment of the present invention, when the central control unit determines the environmental reference value e, the central control unit selects a corresponding environmental adjustment parameter matrix according to the real-time depth a of the current coal seam,
when A is not more than A1, the central control unit selects a1, B1 and c1 in an environment adjusting parameter matrix B1 to determine an environment reference value e;
when A is greater than A1 and less than or equal to A2, the central control unit selects a2, B2 and c2 in an environment adjusting parameter matrix B2 to determine an environment reference value e;
when A is greater than A2 and less than or equal to A3, the central control unit selects A3, B3 and c3 in an environment adjusting parameter matrix B3 to determine an environment reference value e;
when A is greater than A3 and less than or equal to A4, the central control unit selects a4, B4 and c4 in an environment adjusting parameter matrix B4 to determine an environment reference value e;
when the central control unit selects ai, bi and ci to calculate the environment reference value e, i is 1, 2, 3, 4, e is ai × P/P0+ bi × F/F0+ ci × (S/S0).
Specifically, in the embodiment of the present invention, an environment reference value matrix E0 and a water injection unit 2 working parameter matrix Z0 are preset in the central control unit, and for an environment reference value matrix E0(E1, E2, E3, E4), where E1 is a first preset environment reference value, E2 is a second preset environment reference value, E3 is a third preset environment reference value, and E4 is a fourth preset environment reference value; for the water injection unit 2 working parameter matrix group Z0(Z1, Z2, Z3, Z4), wherein Z1 is a first preset water injection unit 2 working reference parameter, Z2 is a second preset water injection unit 2 working reference parameter, Z3 is a third preset water injection unit 2 working reference parameter, and Z4 is a fourth preset water injection unit 2 working reference parameter.
For the ith water injection unit 2, the working parameter matrix group Zi (Vi, Ti) is defined, wherein Vi represents the ith preset water injection flow rate matrix, Ti represents the ith preset water injection time matrix, and for the ith preset water injection flow rate matrix Vi (V1, V2, V3, V4), V1 is the first preset water injection unit 2 water injection flow rate, V2 is the second preset water injection unit 2 water injection flow rate, V3 is the third preset water injection unit 2 water injection flow rate, and V4 is the fourth preset water injection unit 2 water injection flow rate.
For the ith preset water injection time matrix Ti (T1, T2, T3, T4), T1 is the water injection time of the first preset water injection unit 2, T2 is the water injection time of the second preset water injection unit 2, T3 is the water injection time of the third preset water injection unit 2, and T4 is the water injection time of the fourth preset water injection unit 2.
Specifically, in the embodiment of the present invention, when the central control unit determines the operating parameters of the water injection unit 2 according to the environment reference value e1 obtained in real time,
when E1 is not more than E1, the central control unit determines that the working parameter of the water injection unit 2 is Z1, and selects V1 as the water injection flow rate of the water injection unit 2 and T1 as the water injection time of the water injection unit 2;
when the E1 is more than E1 and less than or equal to E2, the central control unit determines that the working parameter of the water injection unit 2 is Z2, selects V2 as the water injection flow rate of the water injection unit 2, and selects T2 as the water injection time of the water injection unit 2;
when the E2 is more than E1 and less than or equal to E3, the central control unit determines that the working parameter of the water injection unit 2 is Z3, selects V3 as the water injection flow rate of the water injection unit 2, and selects T3 as the water injection time of the water injection unit 2;
and when the E3 is more than E1 and less than or equal to E4, the central control unit determines that the working parameter of the water injection unit 2 is Z4, and selects V4 as the water injection flow rate of the water injection unit 2 and T4 as the water injection time of the water injection unit 2.
Specifically, in the embodiment of the present invention, when the water injection unit 2 operates for the preset time Ti according to the working parameter Zi, the central control unit collects the real-time coal seam environment matrix W and calculates the real-time environment reference value e2, compares e1 with e2, and adjusts the water injection flow rate Vi and the water injection time Ti of the working parameter of the water injection unit 2 according to the comparison result,
when the water injection unit 2 works according to the water injection flow rate Vi and the water injection time Ti in the current working parameters, the water injection unit is more than or equal to 0.9 × e1 and the water injection time is more than e2 and less than e 1;
when the e2 is more than or equal to 0.8 × e1 and less than 0.9 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit 2 to be V (i-1), and the water injection time is Ti;
when e2 is more than or equal to e1 and less than 1.1 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit 2 to be V (i +1), and the water injection time is Ti;
when the e2 is more than or equal to 1.1 × e1 and less than 1.2 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit 2 to be V (i +1), and the water injection time is T (i + 1).
Specifically, in the embodiment of the present invention, when the environmental reference value is within the range of the last environmental reference value, the working parameters of the water injection unit 2 are directly adjusted, and if the currently acquired environmental reference value is not within the range of the last environmental reference value, the accuracy of data acquisition is preferentially considered, and the data in the coal seam environment matrix is acquired for the second time, so that the accuracy of the data is improved, and the error is reduced.
Specifically, in the embodiment of the invention, when e2 is greater than or equal to 1.2 × e1 or e2 is less than 0.8 × e1, the central control unit performs secondary acquisition on the real-time coal seam environment matrix W and calculates a real-time environment reference value e22, compares e22 with e2,
if the e2 is more than or equal to 0.9 × e22 and less than 1.1 × e22, the central control unit adjusts the water injection unit 2 by taking e22 as a real-time environment reference value;
and if the e2 is more than or equal to 1.1 × e22 or the e2 is less than 0.9 × e22, the central control unit judges that the real-time coal seam environment data acquisition is wrong.
Specifically, in the embodiment of the present invention, the probability of errors is reduced by comparing the two environmental reference values, so as to improve the data accuracy of the water injection unit 2, and if the secondary acquired data is within the preset range, the environmental reference value calculated by the secondary acquired data is compared with the primary environmental reference value, so as to adjust the operating parameters of the water injection unit 2.
Specifically, in the embodiment of the present invention, when the central control unit compares the real-time environment reference values e22 and e1 and adjusts the water injection flow rate Vi and the water injection time Ti of the operating parameters of the water injection unit 2,
when the water injection unit 2 works according to the water injection flow rate Vi and the water injection time Ti in the current working parameters, the water injection unit is more than or equal to 0.9 × e1 and the water injection time is more than e22 and less than e 1;
when the e22 is more than or equal to 0.8 × e1 and less than 0.9 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit 2 to be V (i-1), and the water injection time is Ti;
when e22 is more than or equal to e1 and less than 1.1 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit 2 to be V (i +1), and the water injection time is Ti;
when the e22 is more than or equal to 1.1 × e1 and less than 1.2 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit 2 to be V (i +1), and the water injection time is T (i + 1);
when e22 is more than or equal to 1.2 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit 2 to V4, and the water injection time is T4;
and when e22 is less than 0.8 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit 2 to be V (i-2), and the water injection time is T (i-1).
Specifically, in the embodiment of the present invention, the central control unit adjusts the working parameters of the water injection unit 2, so as to gradually reduce the environmental reference value, improve the water injection efficiency of the water injection unit 2, and improve the permeability of the coal seam, so that the water injection unit 2 can adjust the water injection unit 2 according to the actual environmental reference value of the coal seam.
Specifically, in the embodiment of the present invention, if the water injection flow rate of the water injection unit 2 is V1 or V4, when the central control unit adjusts the water injection flow rate to be the water injection flow rate before or after the current water injection flow rate sequence, V1 or V4 is used as the adjusted water injection flow rate; if the water injection time of the water injection unit 2 is T1 or T4, the central control unit adjusts the water injection time to be the water injection time before or after the current water injection time sequence, and takes T1 or T4 as the adjusted water injection time.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, and it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A coal seam drilling and water injection construction process is characterized by comprising the following steps:
step one, a central control unit establishes a real-time coal bed environment matrix W by receiving data detected by a pressure detector, a dust detector and a humidity detector which are arranged at the coal bed drilling and water injection destination in real time;
step two, the central control unit determines an environment adjusting parameter according to the depth of the current coal bed, and calculates a current coal bed real-time environment reference value e1 according to the determined environment adjusting parameter and according to the real-time pressure of the coal bed, the real-time coal dust concentration of the coal bed and the real-time air dryness of the coal bed in the coal bed environment matrix W;
step three, the central control unit determines working parameters of the water injection unit according to the environment reference value and selects corresponding working parameters from a working matrix of the water injection unit;
step four, when the water injection unit works to the corresponding water injection time according to the correspondingly selected water injection flow rate, the central control unit collects data in the real-time coal bed environment matrix and calculates a real-time environment reference value e2, compares the environment reference values e2 with e1, and adjusts the water injection flow rate Vi and the water injection time Ti of the working parameters of the water injection unit according to the comparison result;
step five, if e2 is within the preset range of e1, the central control unit directly adjusts the working parameters of the water injection unit, and if e2 is not within the preset range of e1, the central control unit reacquires the calculated environmental reference value e22, and if e22 is not within the preset range of e2, and if the real-time coal seam environment data of the central control unit is mistakenly acquired, if e22 is within the preset range of e2, the central control unit takes e22 as an environmental reference value to compare with e1 to adjust the water injection unit and operate according to the adjusted working parameters, when the water injection unit works to the water injection time according to the adjusted water injection flow rate, the central control unit calculates the data in the real-time coal bed environment matrix and compares the real-time environment reference value with the previous environment reference value, and adjusts the working parameters of the water injection unit until the water injection work is finished;
in the first step, a coal seam environment matrix W (P, F, S) is obtained, wherein P represents the pressure of the current water injection coal seam, F represents the coal dust concentration of the current water injection coal seam, and S represents the air dryness of the current water injection coal seam;
in the second step, the central control unit calculates an environment reference value e by the following formula,
e＝a×P/P0+b×F/F0+c×(S/S0)
in the formula, a, b and c are environment adjusting parameters, P represents the pressure of the current water injection coal seam, F represents the coal dust concentration of the current water injection coal seam, S represents the air dryness of the current water injection coal seam, P0 represents the preset pressure of the current water injection coal seam, F0 represents the preset coal dust concentration of the current water injection coal seam, and S0 represents the preset air dryness of the current water injection coal seam.
2. The coal seam drilling and water injection construction process according to claim 1, wherein a preset coal seam depth matrix A0 and an environment adjustment parameter matrix B0 are further arranged in the central control unit, and for the preset coal seam depth matrix A0(A1, A2, A3 and A4), wherein A1 is a first preset coal seam depth, A2 is a second preset coal seam depth, A3 is a third preset coal seam depth, A4 is a fourth preset coal seam depth, and the preset coal seam depths are gradually increased in sequence;
for the environment adjusting parameter matrix set B0(B1, B2, B3, B4), where B1 is a first preset environment adjusting parameter, B2 is a second preset environment adjusting parameter, B3 is a third preset environment adjusting parameter, and B4 is a fourth preset environment adjusting parameter, for the ith environment adjusting parameter matrix Bi (ai, Bi, ci), where ai represents the ith preset adjusting value of the pressure, Bi represents the ith preset adjusting value of the coal dust concentration, and ci represents the ith preset adjusting value of the air dryness.
3. The coal seam drilling and water injection construction process according to claim 2, wherein when the central control unit determines the environment reference value e, the central control unit selects a corresponding environment adjustment parameter matrix according to the real-time depth A of the current coal seam,
when A is not more than A1, the central control unit selects a1, B1 and c1 in an environment adjusting parameter matrix B1 to determine an environment reference value e;
when A is greater than A1 and less than or equal to A2, the central control unit selects a2, B2 and c2 in an environment adjusting parameter matrix B2 to determine an environment reference value e;
when A is greater than A2 and less than or equal to A3, the central control unit selects A3, B3 and c3 in an environment adjusting parameter matrix B3 to determine an environment reference value e;
when A is greater than A3 and less than or equal to A4, the central control unit selects a4, B4 and c4 in an environment adjusting parameter matrix B4 to determine an environment reference value e;
when the central control unit selects ai, bi and ci to calculate the environment reference value e, i is 1, 2, 3, 4, e is ai × P/P0+ bi × F/F0+ ci × (S/S0).
4. The coal seam drilling and water injection construction process according to claim 3, wherein an environment reference value matrix E0 and a water injection unit working parameter matrix Z0 are preset in the central control unit, and for an environment reference value matrix E0(E1, E2, E3 and E4), E1 is a first preset environment reference value, E2 is a second preset environment reference value, E3 is a third preset environment reference value, and E4 is a fourth preset environment reference value; for a water injection unit working parameter matrix group Z0(Z1, Z2, Z3 and Z4), wherein Z1 is a first preset water injection unit working reference parameter, Z2 is a second preset water injection unit working reference parameter, Z3 is a third preset water injection unit working reference parameter, and Z4 is a fourth preset water injection unit working reference parameter;
for an ith water injection unit working parameter matrix group Zi (Vi, Ti), wherein Vi represents an ith preset water injection flow rate matrix, Ti represents an ith preset water injection time matrix, and for the ith preset water injection flow rate matrix Vi (V1, V2, V3 and V4), V1 is a first preset water injection unit water injection flow rate, V2 is a second preset water injection unit water injection flow rate, V3 is a third preset water injection unit water injection flow rate, and V4 is a fourth preset water injection unit water injection flow rate;
for the ith preset water injection time matrix Ti (T1, T2, T3, T4), T1 is the water injection time of the first preset water injection unit, T2 is the water injection time of the second preset water injection unit, T3 is the water injection time of the third preset water injection unit, and T4 is the water injection time of the fourth preset water injection unit.
5. The coal seam drilling and water injection construction process of claim 4, wherein when the central control unit determines the working parameters of the water injection unit according to the environment reference value e1 obtained in real time,
when E1 is not more than E1, the central control unit determines that the working parameter of the water injection unit is Z1, and selects V1 as the water injection flow rate of the water injection unit and T1 as the water injection time of the water injection unit;
when the E1 is larger than E1 and is not larger than E2, the central control unit determines that the working parameter of the water injection unit is Z2, selects V2 as the water injection flow rate of the water injection unit, and selects T2 as the water injection time of the water injection unit;
when the E2 is larger than E1 and is not larger than E3, the central control unit determines that the working parameter of the water injection unit is Z3, selects V3 as the water injection flow rate of the water injection unit, and selects T3 as the water injection time of the water injection unit;
and when the E3 is more than E1 and less than or equal to E4, the central control unit determines that the working parameter of the water injection unit is Z4, and selects V4 as the water injection flow rate of the water injection unit and T4 as the water injection time of the water injection unit.
6. The coal seam drilling and water injection construction process according to claim 5, wherein when the water injection unit operates for a preset time Ti according to the working parameters Zi, the central control unit collects a real-time coal seam environment matrix W and calculates a real-time environment reference value e2, compares e1 with e2 and adjusts the water injection flow rate Vi and the water injection time Ti of the working parameters of the water injection unit according to the comparison result,
when the water injection speed is more than or equal to 0.9 × e1 and e2 is more than e1, the water injection unit works according to the water injection flow rate Vi and the water injection time Ti in the current working parameters;
when the e2 is more than or equal to 0.8 × e1 and less than 0.9 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i-1), and the water injection time is Ti;
when e2 is more than or equal to e1 and less than 1.1 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i +1), and the water injection time is Ti;
when the water injection time is T (i +1), the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to V (i +1) when the e2 is more than or equal to 1.1 × e1 and less than 1.2 × e 1.
7. The coal seam drilling and water injection construction process of claim 6, wherein when e2 is more than or equal to 1.2 × e1 or e2 is less than 0.8 × e1, the central control unit secondarily collects a real-time coal seam environment matrix W and calculates a real-time environment reference value e22, compares e22 with e2,
if the e2 is more than or equal to 0.9 × e22 and less than 1.1 × e22, the central control unit adjusts the water injection unit by taking e22 as a real-time environment reference value;
and if the e2 is more than or equal to 1.1 × e22 or the e2 is less than 0.9 × e22, the central control unit judges that the real-time coal seam environment data acquisition is wrong.
8. The coal seam drilling and water injection construction process of claim 7, wherein when the central control unit compares the real-time environment reference values e22 and e1 and adjusts the water injection flow rate Vi and the water injection time Ti of the working parameters of the water injection unit to be,
when the water injection speed is more than or equal to 0.9 × e1 and e22 is more than e1, the water injection unit works according to the water injection flow rate Vi and the water injection time Ti in the current working parameters;
when the e22 is more than or equal to 0.8 × e1 and less than 0.9 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i-1), and the water injection time is Ti;
when e22 is more than or equal to e1 and less than 1.1 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i +1), and the water injection time is Ti;
when the e22 is more than or equal to 1.1 × e1 and less than 1.2 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i +1), and the water injection time is T (i + 1);
when e22 is more than or equal to 1.2 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to V4, and the water injection time is T4;
and when e22 is less than 0.8 × e1, the central control unit adjusts the water injection flow rate in the working parameters of the water injection unit to be V (i-2), and the water injection time is T (i-1).
9. The coal seam drilling and water injection construction process according to claim 8, wherein if the water injection flow rate of the water injection unit is V1 or V4, the central control unit adjusts the water injection flow rate to be the water injection flow rate before or after the current water injection flow rate sequence, and uses V1 or V4 as the adjusted water injection flow rate; if the water injection time of the water injection unit is T1 or T4, the central control unit adjusts the water injection time to be the water injection time before or after the current water injection time sequence, and takes T1 or T4 as the adjusted water injection time.
10. The water injection device based on the coal seam water injection drilling construction process of any claim 1-9 is characterized by comprising the following components:
the pull ring is provided with an outer sleeve in a welded mode at the bottom, a limiting ring is sleeved on the outer sleeve and is arranged in a hollow circular ring structure, and the limiting ring is used for driving the outer sleeve to rotate;
the mounting frame is of an stool-shaped structure, the mounting frame is arranged below the pull ring, a limiting groove is formed in the top of the mounting frame, the outer sleeve is located in the limiting groove, and the outer sleeve and the mounting frame are in threaded connection and used for supporting the outer sleeve;
the water injection unit is arranged in the outer sleeve, the outer sleeve is sleeved outside the water injection unit, the outer side wall of the water injection unit is provided with a connecting block in a threaded manner, the connecting block is arranged in a hollow circular ring structure, the top of the connecting block is hinged with a movable limiting rod, the number of the movable limiting rods is three, the movable limiting rods are evenly distributed on the connecting block, the output end of the water injection unit is provided with a hollow pipe in a welded manner, a check valve is arranged on the hollow pipe and communicated with the hollow pipe, the free end of the check valve is provided with a flowmeter, the flowmeter is communicated with the hollow pipe, the free end of the hollow pipe is welded and provided with a fixed pipe, the free end of the fixed pipe is provided with a rubber expansion body in a threaded manner, the fixed pipe is communicated with the rubber expansion body, and the free, the water injection unit is used for transmitting water to the water outlet holes of the water outlet pipe sequentially through the hollow pipe, the fixed pipe, the rubber expansion body and the limiting pipe;
and the central control unit is arranged on the mounting frame, establishes a real-time coal bed environment matrix by receiving data detected by a pressure detector, a dust detector and a humidity detector which are arranged at the destination of coal bed drilling water injection in real time, and adjusts water injection parameters.
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