CN113848585B - Gas storage microseism monitoring method - Google Patents
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Abstract
The invention relates to a gas storage microseism monitoring method, in particular to the technical field of microseism monitoring. According to the gas storage micro-earthquake monitoring method, the acquisition module acquires the monitoring results of the transverse axis displacement H detected by the laser range finder in the migration monitoring assembly, the longitudinal axis pressure P detected by the pressure sensor and the amplitude f detected by the detector in the vibration monitoring assembly, the analysis module analyzes the monitoring results, the acquisition module acquires the historical monitoring results corresponding to the historical early warning results of the monitoring center, the analysis module compares the monitoring results in the step S1 with the historical detection results, the monitoring results in the step S1 are determined to be corrected according to the comparison results of the monitoring results and the historical monitoring results, the early warning value sent to the monitoring center by the sending module is calculated according to the corrected monitoring results, the accuracy of the monitoring process is improved, and the micro-earthquake monitoring accuracy is further improved.
Description
Technical Field
The invention relates to the technical field of microseism monitoring, in particular to a method for monitoring microseism of a gas storage.
Background
Earthquake, also called earthquake and earth vibration, is a natural phenomenon that earthquake waves are generated during the vibration caused by the process of quickly releasing energy from the earth crust, and the mutual extrusion and collision between the plates on the earth cause the dislocation and the fracture of the plate edges and the inside of the plates, which is the main reason for causing the earthquake.
Among the prior art, the earthquake easily causes the gas storage to take place the skew and damages the phenomenon, in case the gas storage reveals the phenomenon and will cause the major accident to appear, current microseism monitoring facilities can only monitor whether to take place the microseism, can't take place skew distance and vibration intensity to the ground plate in-process of the microseism and monitor the record, thereby the staff of being not convenient for carries out timely maintenance to the gas storage, and current check out test set structure is complicated, the installation degree of difficulty is higher, and can not carry out accurate control and regulation to the monitoring process according to real-time supervision data and historical data.
Disclosure of Invention
Therefore, the invention provides a gas storage microseism monitoring method which is used for overcoming the problem that in the prior art, the monitoring process cannot be accurately controlled and adjusted according to real-time monitoring data and historical data, so that the microseism monitoring is not accurate enough.
In order to achieve the above object, the present invention provides a gas storage microseism monitoring method, comprising:
step S1, an acquisition module acquires monitoring results of a transverse axis displacement H detected by a laser range finder in the deviation monitoring assembly, a longitudinal axis pressure P detected by a pressure sensor and an amplitude f detected by a detector in the vibration monitoring assembly, and an analysis module analyzes the monitoring results;
s2, the acquisition module acquires a historical monitoring result corresponding to the historical early warning result of the monitoring center, and the analysis module compares the monitoring result in the S1 with the historical monitoring result;
and S3, determining to correct the monitoring result in the step S1 according to the comparison result of the monitoring result and the historical monitoring result, and calculating an early warning value sent to a monitoring center by a sending module according to the corrected monitoring result.
Further, in the step S1, when the obtaining module monitors the displacement H detected by the laser range finder and/or the pressure P detected by the pressure sensor, the obtaining module compares the displacement H with a preset displacement H0, and/or compares the pressure P with a preset pressure P0, the analyzing module preliminarily determines whether to perform an early warning according to the comparison result,
if H is less than or equal to H0 and P is less than P0, the analysis module preliminarily judges that no early warning is carried out;
if H is more than H0 or P is more than P0, the analysis module preliminarily judges to give an early warning.
Further, in the step S1, when the analysis module preliminarily determines that the pre-warning is performed, H > H0 and/or P > P0, the analysis module compares the amplitude f with a first preset amplitude f1 and a second preset amplitude f2 according to the obtained amplitude f, and determines whether the pre-warning is performed according to a comparison result between the amplitude f and the first preset amplitude f1 and the second preset amplitude f2,
if f is less than or equal to f1, the analysis module judges that no early warning is performed;
if f is greater than f1 and less than or equal to f2, the analysis module judges to perform early warning and preliminarily determines an early warning value W1 according to the comparison result of the amplitude f and a first preset amplitude f 1;
if f is larger than f2, the analysis module judges to perform early warning and preliminarily determines an early warning value W2 according to the comparison result of the amplitude f and a second preset amplitude f 2.
Further, in step S1, when the analysis module preliminarily determines that the warning value is We and H > H0, setting e to 1,2, the control module calculates a displacement difference Δ H between the displacement H and a preset displacement H0, setting Δ H to H-H0, preliminarily determines to send a transverse seismic wave warning to the monitoring center and selects a corresponding adjustment coefficient to adjust the warning value according to a comparison result between the displacement difference and the preset displacement difference,
the control module is provided with a first preset displacement difference delta H1, a second preset displacement difference delta H2, a third preset displacement difference delta H3, a first transverse wave early warning value adjusting coefficient Kh1, a first transverse wave early warning value adjusting coefficient Kh2 and a third transverse wave early warning value adjusting coefficient Kh3, wherein delta H1 is more than delta H2 and more than delta H3, 1 is more than 1 and Kh1 is more than Kh2 and more than Kh3 is less than 1.5,
when the delta H is less than or equal to the delta H1, the control module selects a first transverse wave early warning value adjusting coefficient Kh1 to adjust the early warning value;
when the delta H is more than 1 and less than or equal to delta H2, the control module selects a second transverse wave early warning value adjusting coefficient Kh2 to adjust the early warning value;
when the delta H is more than 2 and less than or equal to delta H3, the control module selects a third transverse wave early warning value adjusting coefficient Kh3 to adjust the early warning value;
when the control module selects the jth transverse wave early warning value adjustment coefficient Khj to adjust the early warning value, j is set to be 1,2 and 3, the control module sets the adjusted early warning value to be We1, transverse seismic wave early warning information is sent to the monitoring center according to the early warning level corresponding to the adjusted early warning value, and We1 is set to be We multiplied by Khj.
Further, in step S1, when the analysis module preliminarily determines that the warning value is We and P > P0, the control module calculates a pressure difference Δ P between the pressure P and the preset pressure P0, sets Δ P to P-P0, preliminarily determines to send a longitudinal seismic wave warning to the monitoring center, and selects a corresponding adjustment coefficient to adjust the warning value according to a comparison result between the pressure difference and the preset pressure difference;
the control module is also provided with a first preset pressure difference value delta P1, a second preset pressure difference value delta P2, a third preset pressure difference value delta P3, a first longitudinal wave early warning value adjusting coefficient Kz1, a second longitudinal wave early warning value adjusting coefficient Kz2 and a third longitudinal wave early warning value adjusting coefficient Kz3, wherein delta P1 is more than delta P2 is more than delta P3, Kz1 is more than 1 and is more than Kz2 and is more than Kz3 and is less than 1.5,
when the delta P is less than or equal to the delta P1, the control module selects a first longitudinal wave early warning value adjusting coefficient Kz1 to adjust the early warning value;
when the delta P is more than or equal to delta P1 and less than or equal to delta P2, the control module selects a second longitudinal wave early warning value adjusting coefficient Kz2 to adjust the early warning value;
when the delta P is more than or equal to delta P2 and less than or equal to delta P3, the control module selects a third longitudinal wave early warning value adjusting coefficient Kz3 to adjust the early warning value;
when the control module selects the j ' th longitudinal wave early warning value adjusting coefficient Kzj ' to adjust the early warning value, j is set to be 1,2 and 3, the control module sets the adjusted early warning value to be We2, and sends longitudinal seismic wave early warning information to the monitoring center according to the early warning level corresponding to the adjusted early warning value, and We2 is set to be We multiplied by Kzj '.
Further, in the step S1, when the analysis module preliminarily determines that the early warning values are We, H > H0 and P > P0, the control module calculates a ratio of the preset displacement H0 to the displacement H as an adjusted lateral seismic wave early warning value We1 weight coefficient Q1 and calculates a ratio of the preset pressure P0 to the pressure P as a weight coefficient Q2 of a longitudinal seismic wave early warning value We2, and calculates an actual micro-seismic warning value We3 according to the lateral seismic wave early warning value We1 and the weight coefficient Q1 and the longitudinal seismic wave early warning value We2 and the weight coefficient Q2, where the calculation formula is:
We3＝We1×Q1+We2×Q2
wherein Q1 is H0/H, and Q2 is P0/P.
Further, in the step S2, when obtaining the historical monitoring result corresponding to the historical warning result of the monitoring center is completed, the analysis module obtains a similarity U between the waveform in the historical monitoring result and the waveform detected by the detector, compares the similarity U with a preset similarity U0, and determines whether to correct the warning value according to the comparison result,
if U is more than U0, the analysis module judges that the similarity is higher and corrects the early warning value;
and if U is less than or equal to U0, the analysis module judges that the similarity is not high and does not modify the early warning value.
Further, in the step S2, when the analysis module determines that the similarity is high and corrects the warning value, the control module calculates a difference Δ U between the similarity U and a preset similarity U0, sets Δ U to U-U0, selects a corresponding correction coefficient according to a comparison result between the similarity difference and the preset similarity difference to correct the warning value,
the control module is also provided with a first preset similarity difference delta U1, a second preset similarity difference delta U2, a third preset similarity difference delta U3, a first correction coefficient X1, a second correction coefficient X2 and a third correction coefficient X3, wherein delta U1 is larger than delta U2 and smaller than delta U3, 1 is larger than X1 is larger than X2 and smaller than X3 and smaller than 2,
when the delta U is less than or equal to the delta U1, the control module selects a first correction coefficient X1 to correct the early warning value;
when the delta U is more than or equal to delta U1 and less than or equal to delta U2, the control module selects a second correction coefficient X2 to correct the early warning value;
when the delta U is more than or equal to delta U2 and less than or equal to delta U3, the control module selects a third correction coefficient X3 to correct the early warning value;
when the control module selects the nth correction coefficient Xn to correct the early warning value, the control module sets the corrected early warning value to We4, sets We4 to Wes Xn, and sets N to 1,2, 3, and s to 1,2, 3.
Compared with the prior art, the micro-earthquake monitoring device has the advantages that the migration monitoring assemblies and the vibration monitoring assemblies are arranged around the gas storage in an array mode, the corresponding early warning values are determined according to the amplitude results monitored by the monitoring assemblies, the waveform trend of the earthquake is judged according to the real-time displacement and/or pressure, so that the micro-earthquake is accurately monitored, the determined early warning values are adjusted according to the comparison results of the real-time displacement and/or pressure and the preset values, the accuracy of the monitoring process is improved, and the micro-earthquake monitoring accuracy is further improved.
Especially, whether early warning is performed or not is preliminarily judged through a comparison result of the actual amplitude and the first preset amplitude and the second preset amplitude, so that the accuracy of the monitoring process is further improved, and the microseism monitoring accuracy is further improved.
Particularly, the accuracy of the monitoring process is further improved by acquiring the historical monitoring result, extracting the waveform from the historical monitoring result, comparing the waveform with the waveform acquired by the detector in real time, acquiring the similarity of the waveform, and further correcting the early warning value according to the comparison result of the similarity and the preset similarity, so that the microseism monitoring accuracy is further improved.
Furthermore, the control module is provided with a plurality of preset difference values and adjustment coefficients corresponding to a plurality of preset values, and when the early warning value is determined to be adjusted and/or corrected according to the comparison result of the actual monitoring value and the preset value, the corresponding adjustment coefficient or correction coefficient is selected according to the difference value of the actual monitoring value and the preset value to adjust the early warning value, so that the accuracy of the monitoring process is further improved, and the micro-earthquake monitoring accuracy is further improved.
Drawings
FIG. 1 is a schematic structural diagram of a monitoring device of the gas storage microseism monitoring method of the invention;
FIG. 2 is an exploded view of the migration monitoring assembly of the monitoring device of the gas storage microseism monitoring method of the invention;
FIG. 3 is a schematic structural view of a vibration monitoring assembly of the monitoring device of the gas storage microseism monitoring method;
FIG. 4 is a logic block diagram of a controller of a monitoring device of the gas storage microseism monitoring method according to the invention;
FIG. 5 is a flow chart of the gas storage microseism monitoring method of the invention.
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 do not delimit 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. 1-3, fig. 1 is a schematic structural diagram of a monitoring device of the gas storage microseism monitoring method according to the present invention; FIG. 2 is an exploded view of the migration monitoring assembly of the monitoring device of the gas storage microseism monitoring method of the invention; FIG. 3 is a schematic structural view of a vibration monitoring assembly of the monitoring device of the gas storage microseism monitoring method of the invention; fig. 4 is a logic block diagram of a controller of a monitoring device of the gas reservoir micro-seismic monitoring method of the present invention.
The monitoring equipment of the gas storage microseism monitoring method comprises a gas storage body 1, wherein a vibration monitoring assembly 2 and an offset monitoring assembly 3 are arranged on the gas storage body 1 in an array mode.
Through the setting of a plurality of skew monitoring module 3, be convenient for monitor the skew condition of the ground plate block near gas storage body 1, through the setting of vibrations monitoring module 2, be convenient for monitor the shock strength that micro-earthquake brought gas storage body 1.
Wherein: the vibration monitoring assembly 2 comprises a detector 201, a fixing rod 202, a first spring 203 and a fixing plate 204, wherein the detector 201 is installed on the outer side of the gas storage body 1, the fixing rod 202 is fixedly connected to the outer side of the detector 201, the first spring 203 is sleeved on the outer side of the fixing rod 202, and the fixing plate 204 is fixedly connected to one end, away from the detector 201, of the first spring 203.
Through the setting of fixed plate 204, be convenient for with the basement plate piece of gas storage body 1 contact, through the setting of first spring 203, be convenient for contradict fixed plate 204, guarantee plate contact effect, when taking place the micro earthquake, fixed plate 204 will shake, the first spring 203 of compression this moment, fixed plate 204 will collide with dead lever 202 respectively afterwards, through the setting of wave detector 201, be convenient for monitor the record to the amplitude fluctuation that ground transmitted.
Wherein: skew monitoring subassembly 3 includes fixed pipe 301, second spring 302, laser rangefinder sensor 303 and sleeve pipe 304, the equal fixed connection in gas storage storehouse body 1's of fixed pipe 301 outside, second spring 302 overlaps respectively and establishes the middle part to fixed pipe 301, the sleeve pipe 304 overlaps respectively and establishes the outside to fixed pipe 301, the one end that gas storage storehouse body 1 was kept away from to second spring 302 respectively with sleeve pipe 304 fixed connection, the inside to fixed pipe 301 is installed respectively to laser rangefinder sensor 303.
Through the setting of fixed pipe 301, be convenient for play for laser rangefinder sensor 303 and provide the mounted position, through the setting of sleeve pipe 304, be convenient for contact with gas storage body 1, through the setting of second spring 302, be convenient for guarantee the contact effect, when taking place the microseism, sleeve pipe 304 will move along with the skew of following the plate, the distance that laser rangefinder sensor 303 measured this moment will not conform with the default to can compare according to the default, reachs the plate degree of shifting.
Wherein: two pressure sensors 4 are embedded in the middle of the fixed pipe 301, cushion blocks 5 are arranged on the outer sides of the pressure sensors 4, and the cushion blocks 5 are respectively contacted with the inner wall of the sleeve 304.
If when the microseism, the phenomenon of vertical migration takes place for the plate near the gas storage body 1 to sleeve pipe 304 takes place the up-and-down motion, and cushion 5 all receives the extrusion of different degrees afterwards, and later through pressure sensor 4's setting, it is convenient for carry out the comparison with the default with new pressure data, thereby can learn the plate vertical migration condition.
Wherein: the sleeve 304 is far away from the antiskid pad 6 fixedly connected to one end of the gas storage body 1, and the ball 7 is embedded in the fixing plate 204.
Through the setting of slipmat 6, be convenient for reduce sleeve pipe 304 and plate and take place sliding phenomenon to guarantee that the skew data that reachs is more accurate, through the setting of ball 7, be convenient for fixed plate 204 with ball 7 with the plate when guaranteeing the contact effect reduce wear.
Wherein: the outer side of the gas storage body 1 is provided with a controller 8, an acquisition module for acquiring data, an analysis module for analyzing data, a control module for adjusting an early warning value and a sending module for sending early warning information are arranged in the controller, the acquisition module is connected with the analysis module, the analysis module is connected with the control module, and the sending module is connected with the control module.
Through the setting of controller 8, be convenient for control the inside electrical components of whole device, it is more convenient, convenient to use person's more audio-visual observation record's data simultaneously is convenient for carry out the maintenance of different degrees to gas storage body 1 according to the micro-seismic condition.
Fig. 5 is a flow chart of the method for monitoring microseismic activity of a gas storage according to the present invention.
The gas storage microseism monitoring method comprises the following steps:
step S1, an acquisition module acquires monitoring results of a transverse axis displacement H detected by a laser range finder in the deviation monitoring assembly, a longitudinal axis pressure P detected by a pressure sensor and an amplitude f detected by a detector in the vibration monitoring assembly, and an analysis module analyzes the monitoring results;
s2, the acquisition module acquires a historical monitoring result corresponding to the historical early warning result of the monitoring center, and the analysis module compares the monitoring result in the step S1 with the historical monitoring result;
and S3, correcting the monitoring result in the step S1 according to the comparison result of the monitoring result and the historical monitoring result, and calculating an early warning value sent to a monitoring center by a sending module according to the corrected monitoring result.
Specifically, in the step S1, when the obtaining module monitors the displacement H detected by the laser range finder and/or the pressure P detected by the pressure sensor, the obtaining module compares the displacement H with a preset displacement H0, and/or compares the pressure P with a preset pressure P0, the analyzing module preliminarily determines whether to perform an early warning according to the comparison result,
if H is less than or equal to H0 and P is less than P0, the analysis module preliminarily judges not to perform early warning;
if H is more than H0 or P is more than P0, the analysis module preliminarily judges to give an early warning.
Specifically, in step S1, when the analysis module preliminarily determines that the pre-warning is performed, H > H0 and/or P > P0, the analysis module compares the amplitude f with a first preset amplitude f1 and a second preset amplitude f2 according to the amplitude f obtained by the obtaining module, and determines whether the pre-warning is performed according to a comparison result between the amplitude f and the first preset amplitude f1 and the second preset amplitude,
if f is less than or equal to f1, the analysis module judges that no early warning is performed;
if f is more than f1 and less than or equal to f2, the analysis module judges that early warning is carried out and preliminarily determines an early warning value W1 according to a comparison result of the amplitude f and a first preset amplitude f 1;
if f is larger than f2, the analysis module judges to perform early warning and preliminarily determines an early warning value W2 according to the comparison result of the amplitude f and a second preset amplitude f 2.
Specifically, in step S1, when the analysis module preliminarily determines that the warning value is We and H > H0, setting e to 1,2, the control module calculates a displacement difference Δ H between the displacement H and a preset displacement H0, sets Δ H to H-H0, preliminarily determines to send a transverse seismic wave warning to the monitoring center and selects a corresponding adjustment coefficient to adjust the warning value according to a comparison result between the displacement difference and the preset displacement difference,
the control module is provided with a first preset displacement difference delta H1, a second preset displacement difference delta H2, a third preset displacement difference delta H3, a first transverse wave early warning value adjusting coefficient Kh1, a first transverse wave early warning value adjusting coefficient Kh2 and a third transverse wave early warning value adjusting coefficient Kh3, wherein delta H1 is more than delta H2 and more than delta H3, 1 is more than 1 and Kh1 is more than Kh2 and more than Kh3 is less than 1.5,
when the delta H is less than or equal to the delta H1, the control module selects a first transverse wave early warning value adjusting coefficient Kh1 to adjust the early warning value;
when the delta H is more than 1 and less than or equal to delta H2, the control module selects a second transverse wave early warning value adjusting coefficient Kh2 to adjust the early warning value;
when the delta H is more than 2 and less than or equal to delta H3, the control module selects a third transverse wave early warning value adjusting coefficient Kh3 to adjust the early warning value;
when the control module selects the jth transverse wave early warning value adjusting coefficient Khj to adjust the early warning value, j is set to be 1,2 and 3, the control module sets the adjusted early warning value to be We1, transverse seismic wave early warning information is sent to the monitoring center according to the early warning level corresponding to the adjusted early warning value, and We1 is set to be Wex Khj.
Specifically, in step S1, when the analysis module preliminarily determines that the early warning value is We and P > P0, the control module calculates a pressure difference Δ P between the pressure P and the preset pressure P0, sets Δ P to P-P0, preliminarily determines to send a longitudinal seismic wave early warning to the monitoring center, and selects a corresponding adjustment coefficient to adjust the early warning value according to a comparison result between the pressure difference and the preset pressure difference;
the control module is also provided with a first preset pressure difference value delta P1, a second preset pressure difference value delta P2, a third preset pressure difference value delta P3, a first longitudinal wave early warning value adjusting coefficient Kz1, a second longitudinal wave early warning value adjusting coefficient Kz2 and a third longitudinal wave early warning value adjusting coefficient Kz3, wherein delta P1 is more than delta P2 is more than delta P3, Kz1 is more than 1 and is more than Kz2 and is more than Kz3 and is less than 1.5,
when the delta P is less than or equal to the delta P1, the control module selects a first longitudinal wave early warning value adjusting coefficient Kz1 to adjust the early warning value;
when the delta P is more than or equal to delta P1 and less than or equal to delta P2, the control module selects a second longitudinal wave early warning value adjusting coefficient Kz2 to adjust the early warning value;
when the delta P is more than or equal to delta P2 and less than or equal to delta P3, the control module selects a third longitudinal wave early warning value adjusting coefficient Kz3 to adjust the early warning value;
when the control module selects the j ' th longitudinal wave early warning value adjusting coefficient Kzj ' to adjust the early warning value, j is set to be 1,2 and 3, the control module sets the adjusted early warning value to be We2, and sends longitudinal seismic wave early warning information to the monitoring center according to the early warning level corresponding to the adjusted early warning value, and We2 is set to be We multiplied by Kzj '.
Specifically, in the step S1, when the analysis module preliminarily determines that the early warning values are We, H > H0 and P > P0, the control module calculates a ratio of the preset displacement H0 to the displacement H as an adjusted lateral seismic wave early warning value We1 weight coefficient Q1 and calculates a ratio of the preset pressure P0 to the pressure P as a weight coefficient Q2 of a longitudinal seismic wave early warning value We2, and calculates an actual micro-seismic early warning value We3 according to the lateral seismic wave early warning value We1 and the weight coefficient Q1 and the longitudinal seismic wave early warning value We2 and the weight coefficient Q2, wherein the calculation formula is as follows:
We3＝We1×Q1+We2×Q2
wherein Q1 is H0/H, and Q2 is P0/P.
Specifically, in the step S2, when obtaining the historical monitoring result corresponding to the historical warning result of the monitoring center is completed, the analysis module obtains a similarity U between the waveform in the historical monitoring result and the waveform detected by the detector, compares the similarity U with a preset similarity U0, and determines whether to correct the warning value according to the comparison result,
if U is greater than U0, the analysis module judges that the similarity is higher and corrects the early warning value;
and if the U is less than or equal to U0, the analysis module judges that the similarity is not high and does not modify the early warning value.
Specifically, in step S2, when the analysis module determines that the similarity is high and corrects the warning value, the control module calculates a difference Δ U between the similarity U and a preset similarity U0, sets Δ U-U0, and selects a corresponding correction coefficient according to a comparison result between the similarity difference and the preset similarity difference to correct the warning value,
the control module is also provided with a first preset similarity difference delta U1, a second preset similarity difference delta U2, a third preset similarity difference delta U3, a first correction coefficient X1, a second correction coefficient X2 and a third correction coefficient X3, wherein delta U1 is larger than delta U2 and smaller than delta U3, 1 is larger than X1 is larger than X2 and smaller than X3 and smaller than 2,
when the delta U is less than or equal to the delta U1, the control module selects a first correction coefficient X1 to correct the early warning value;
when the delta U is more than or equal to delta U1 and less than or equal to delta U2, the control module selects a second correction coefficient X2 to correct the early warning value;
when the delta U is more than or equal to delta U2 and less than or equal to delta U3, the control module selects a third correction coefficient X3 to correct the early warning value;
when the control module selects the nth correction coefficient Xn to correct the early warning value, the control module sets the corrected early warning value to We4, sets We4 to Wes Xn, and sets N to 1,2, 3, and s to 1,2, 3.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is 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.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A method for monitoring microseism of a gas storage, which is characterized by comprising the following steps:
step S1, an acquisition module acquires monitoring results of a transverse axis displacement H detected by a laser range finder in the deviation monitoring assembly, a longitudinal axis pressure P detected by a pressure sensor and an amplitude f detected by a detector in the vibration monitoring assembly, and an analysis module analyzes the monitoring results;
s2, the acquisition module acquires a historical monitoring result corresponding to the historical early warning result of the monitoring center, and the analysis module compares the monitoring result in the S1 with the historical monitoring result;
s3, correcting the monitoring result in the step S1 according to the comparison result of the monitoring result and the historical monitoring result, and calculating an early warning value sent to a monitoring center by a sending module according to the corrected monitoring result;
in the step S2, when obtaining the historical monitoring result corresponding to the historical warning result of the monitoring center is completed, the analysis module obtains the similarity U between the waveform in the historical monitoring result and the waveform detected by the detector, compares the similarity U with a preset similarity U0, and determines whether to correct the warning value according to the comparison result,
if U is greater than U0, the analysis module judges that the similarity is higher and corrects the early warning value;
if the U is less than or equal to U0, the analysis module judges that the similarity is not high and does not modify the early warning value;
in the step S2, when the analysis module determines that the similarity is high and corrects the warning value, the control module calculates a difference Δ U between the similarity U and a preset similarity U0, sets Δ U to U-U0, selects a corresponding correction coefficient according to a comparison result between the similarity difference and the preset similarity difference to correct the warning value,
the control module is also provided with a first preset similarity difference delta U1, a second preset similarity difference delta U2, a third preset similarity difference delta U3, a first correction coefficient X1, a second correction coefficient X2 and a third correction coefficient X3, wherein delta U1 is more than delta U2 is more than delta U3, 1 is more than X1 is more than X2 is more than X3 is more than 2,
when the delta U is less than or equal to the delta U1, the control module selects a first correction coefficient X1 to correct the early warning value;
when the delta U is more than or equal to delta U1 and less than or equal to delta U2, the control module selects a second correction coefficient X2 to correct the early warning value;
when the delta U is more than or equal to delta U2 and less than or equal to delta U3, the control module selects a third correction coefficient X3 to correct the early warning value;
when the control module selects the nth correction coefficient Xn to correct the early warning value, the control module sets the corrected early warning value to We4, sets We4 to Wes Xn, and sets N to 1,2, 3, and s to 1,2, 3.
2. The method for monitoring a micro-earthquake in a gas storage according to claim 1, wherein in step S1, the obtaining module compares the displacement H detected by the laser range finder and/or the pressure P detected by the pressure sensor with a preset displacement H0 and/or the pressure P with a preset pressure P0, the analyzing module preliminarily determines whether to perform an early warning according to the comparison result,
if H is less than or equal to H0 and P is less than P0, the analysis module preliminarily judges not to perform early warning;
if H is more than H0 or P is more than P0, the analysis module preliminarily judges to give an early warning.
3. The gas reservoir micro-seismic surveillance method according to claim 2, wherein in step S1, when the analysis module preliminarily decides that an early warning is given, H > H0 and/or P > P0, the analysis module compares the amplitude f with a first preset amplitude f1 and a second preset amplitude f2 according to the obtained amplitude f by the obtaining module, and determines whether an early warning is given according to the comparison result of the amplitude f with the first preset amplitude f1 and the second preset amplitude f2,
if f is less than or equal to f1, the analysis module judges that no early warning is performed;
if f is more than f1 and less than or equal to f2, the analysis module judges that early warning is carried out and preliminarily determines an early warning value W1 according to a comparison result of the amplitude f and a first preset amplitude f 1;
if f is larger than f2, the analysis module judges to perform early warning and preliminarily determines an early warning value W2 according to the comparison result of the amplitude f and a second preset amplitude f 2.
4. The method for monitoring a micro-earthquake in a gas storage according to claim 3, wherein in step S1, when the analysis module preliminarily determines that the early warning value is We and H > H0, the value e is set to 1,2, the control module calculates a displacement difference Δ H between the displacement H and a preset displacement H0, the value Δ H is set to H-H0, preliminarily determines to send a transverse seismic wave early warning to the monitoring center, and selects a corresponding adjustment coefficient to adjust the early warning value according to a comparison result between the displacement difference and the preset displacement difference,
the control module is provided with a first preset displacement difference delta H1, a second preset displacement difference delta H2, a third preset displacement difference delta H3, a first transverse wave early warning value adjusting coefficient Kh1, a first transverse wave early warning value adjusting coefficient Kh2 and a third transverse wave early warning value adjusting coefficient Kh3, wherein delta H1 is more than delta H2 is more than delta H3, Kh1 is more than 1 and Kh2 is more than Kh3 is more than 1.5,
when the delta H is less than or equal to the delta H1, the control module selects a first transverse wave early warning value adjusting coefficient Kh1 to adjust the early warning value;
when the delta H is more than 1 and less than or equal to delta H2, the control module selects a second transverse wave early warning value adjusting coefficient Kh2 to adjust the early warning value;
when the delta H is more than 2 and less than or equal to delta H3, the control module selects a third transverse wave early warning value adjusting coefficient Kh3 to adjust the early warning value;
when the control module selects the jth transverse wave early warning value adjusting coefficient Khj to adjust the early warning value, j is set to be 1,2 and 3, the control module sets the adjusted early warning value to be We1, transverse seismic wave early warning information is sent to the monitoring center according to the early warning level corresponding to the adjusted early warning value, and We1 is set to be Wex Khj.
5. The method for monitoring microseism in a gas storage facility according to claim 4, wherein in step S1, when the analysis module preliminarily determines that the warning value is We and P > P0, the control module calculates the pressure difference Δ P between the pressure P and the preset pressure P0, sets Δ P to P-P0, preliminarily determines to send a longitudinal seismic wave warning to the monitoring center, and selects a corresponding adjustment coefficient to adjust the warning value according to the comparison result between the pressure difference and the preset pressure difference;
the control module is also provided with a first preset pressure difference value delta P1, a second preset pressure difference value delta P2, a third preset pressure difference value delta P3, a first longitudinal wave early warning value adjusting coefficient Kz1, a second longitudinal wave early warning value adjusting coefficient Kz2 and a third longitudinal wave early warning value adjusting coefficient Kz3, wherein delta P1 is more than delta P2 is more than delta P3, Kz1 is more than 1 and is more than Kz2 and is more than Kz3 and is less than 1.5,
when the delta P is less than or equal to the delta P1, the control module selects a first longitudinal wave early warning value adjusting coefficient Kz1 to adjust the early warning value;
when the delta P is more than or equal to delta P1 and less than or equal to delta P2, the control module selects a second longitudinal wave early warning value adjusting coefficient Kz2 to adjust the early warning value;
when the delta P is more than or equal to delta P2 and less than or equal to delta P3, the control module selects a third longitudinal wave early warning value adjusting coefficient Kz3 to adjust the early warning value;
when the control module selects the j ' th longitudinal wave early warning value adjusting coefficient Kzj ' to adjust the early warning value, j is set to be 1,2 and 3, the control module sets the adjusted early warning value to be We2, and sends longitudinal seismic wave early warning information to the monitoring center according to the early warning level corresponding to the adjusted early warning value, and We2 is set to be We multiplied by Kzj '.
6. The gas reservoir micro-seismic surveillance method of claim 5, wherein in step S1, when the analysis module preliminarily determines that the pre-warning values are We, H > H0 and P > P0, the control module calculates a ratio of the preset displacement H0 to the displacement H as an adjusted transverse seismic wave pre-warning value We1 weight coefficient Q1 and a ratio of the preset pressure P0 to the pressure P as a weight coefficient Q2 of a longitudinal seismic wave pre-warning value We2, and calculates an actual micro-seismic warning value We3 according to the transverse seismic wave pre-warning value We1 and the weight coefficient Q1, the longitudinal seismic wave pre-warning value We2 and the weight coefficient Q2, and the calculation formula is as follows:
We3＝We1×Q1+We2×Q2
wherein Q1 is H0/H, and Q2 is P0/P.
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