CN110031553A - Casing damage monitors system and method - Google Patents
Casing damage monitors system and method Download PDFInfo
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- CN110031553A CN110031553A CN201910417700.3A CN201910417700A CN110031553A CN 110031553 A CN110031553 A CN 110031553A CN 201910417700 A CN201910417700 A CN 201910417700A CN 110031553 A CN110031553 A CN 110031553A
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- 230000006378 damage Effects 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 82
- 238000012545 processing Methods 0.000 claims abstract description 60
- 239000011435 rock Substances 0.000 claims abstract description 42
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- 230000002123 temporal effect Effects 0.000 claims abstract description 10
- 238000012360 testing method Methods 0.000 claims description 33
- 230000002463 transducing effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 description 7
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- 239000004568 cement Substances 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0421—Longitudinal waves
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Abstract
The application provides a kind of casing damage monitoring system and method, issues multiple acoustic signals by sound wave monitoring component, and in the inscribed wave reflection signal that quiets down of preset period of time.Then, it reflects signal to sound wave by sound wave controlled terminal to handle, by treated, sound wave reflection signal is sent to processing terminal.Processing terminal calculates corresponding velocity of longitudinal wave according to the temporal information that sound wave reflects signal, and obtain the velocity of longitudinal wave changing pattern in preset period of time, further according to the relation curve between the velocity of longitudinal wave prestored and strain size, obtain the corresponding relationship between different velocity of longitudinal wave changing patteries and differently strained grade, level of strain corresponding with the velocity of longitudinal wave changing pattern in preset period of time is obtained according to the corresponding relationship, to obtain the impairment scale of casing to be measured.In this way, avoiding the occurrence of the problem of benefit is exploited in influence without directly being detected to casing, and determine level of strain using velocity of longitudinal wave changing pattern, avoiding resultant error caused by different rock behavio(u)rs.
Description
Technical field
The present invention relates to monitoring technical fields, monitor system and method in particular to a kind of casing damage.
Background technique
The presence of high-dip structure geology and high-ground stress often causes formation slippage, is easy to make the oil gas well conduit in stratum
At damage, and the damage of casing will affect the normal production of oil/gas well.During production of hydrocarbons, need to carry out casing regular
Detection, when carrying out Casing Detection, oil/gas well needs to stop production, and launches logger to be detected, whether to judge casing
There are damages.This traditional detection mode needs to expend the production time of oil/gas well, and testing cost is relatively high, is unfavorable for
Improve the economic benefit of oil/gas well.
Summary of the invention
In view of this, the purpose of the application is, a kind of casing damage monitoring system and method is provided to improve above-mentioned ask
Topic.
The embodiment of the present application provides a kind of casing damage monitoring system, and described sleeve pipe damage monitoring system includes that processing is whole
End, sound wave controlled terminal and sound wave monitoring component, the sound wave controlled terminal are supervised with the processing terminal and the sound wave respectively
Component connection is surveyed, the outer wall of casing to be measured is arranged in the sound wave monitoring component, and the casing to be measured is mounted in lithosphere；
The sound wave monitoring component is used to issue multiple acoustic signals to lithosphere, and each by what is received in preset period of time
A sound wave reflection signal is sent to the sound wave controlled terminal；
The sound wave controlled terminal is used to handle each sound wave reflection signal received, and by treated
Each sound wave reflection signal is sent to the processing terminal；
The processing terminal is used to that each sound wave to be calculated according to the temporal information of each sound wave reflection signal anti-
The corresponding velocity of longitudinal wave of signal is penetrated, and this is obtained according to the velocity of longitudinal wave that sound wave each in the preset period of time reflects signal and is preset
Velocity of longitudinal wave changing pattern in period；
The processing terminal is also used to obtain difference according to the relation curve between the velocity of longitudinal wave prestored and strain size
Corresponding relationship between velocity of longitudinal wave changing pattern and differently strained grade, and according to the corresponding relationship obtain with it is described default when
The corresponding level of strain of velocity of longitudinal wave changing pattern in section, obtains the damage etc. of the casing to be measured according to the level of strain
Grade.
Another embodiment of the application provides a kind of casing damage monitoring method, is applied to casing damage and monitors system, described
Casing damage monitoring system includes processing terminal, sound wave controlled terminal and sound wave monitoring component, the sound wave controlled terminal difference
It is connect with the processing terminal and the sound wave monitoring component, the outer wall of casing to be measured, institute is arranged in the sound wave monitoring component
It states casing to be measured to be mounted in lithosphere, the monitoring method includes:
The sound wave monitoring component issues multiple acoustic signals, and each sound that will be received in preset period of time to lithosphere
Wave reflection signal is sent to the sound wave controlled terminal；
Each sound wave reflection signal that the sound wave controlled end-on receives is handled, and will treated each institute
It states sound wave reflection signal and is sent to the processing terminal；
Each sound wave reflection letter is calculated according to the temporal information of each sound wave reflection signal in the processing terminal
Number corresponding velocity of longitudinal wave, and the preset period of time is obtained according to the velocity of longitudinal wave that sound wave each in the preset period of time reflects signal
Interior velocity of longitudinal wave changing pattern；
The processing terminal obtains different velocity of longitudinal waves according to prestoring velocity of longitudinal wave and straining the relation curve between size
Corresponding relationship between changing pattern and differently strained grade, and obtained and indulging in the preset period of time according to the corresponding relationship
The corresponding level of strain of wave velocity changing pattern obtains the impairment scale of the casing to be measured according to the level of strain.
Casing damage provided by the embodiments of the present application monitors system and method, issues multiple sound waves by sound wave monitoring component
Signal, and in the inscribed wave reflection signal that quiets down of preset period of time.Then, sound wave is reflected at signal by sound wave controlled terminal
Reason, by treated, sound wave reflection signal is sent to processing terminal.Processing terminal reflects the temporal information meter of signal according to sound wave
Corresponding velocity of longitudinal wave is calculated, and obtains the velocity of longitudinal wave changing pattern in preset period of time.Processing terminal is further according to the longitudinal wave prestored
Relation curve between speed and strain size, obtains corresponding between different velocity of longitudinal wave changing patteries and differently strained grade
Relationship obtains level of strain corresponding with the velocity of longitudinal wave changing pattern in preset period of time according to the corresponding relationship, to obtain
The impairment scale of casing to be measured.In this way, the problem of benefit is exploited in influence is avoided the occurrence of without directly detecting to casing, and
Level of strain is determined using velocity of longitudinal wave changing pattern, avoids resultant error caused by different rock behavio(u)rs.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the schematic diagram that casing damage provided by the embodiments of the present application monitors system.
Fig. 2 is the structural schematic diagram of casing provided by the embodiments of the present application and sound wave monitoring component.
Fig. 3 is the structure chart of sound wave monitoring component provided by the embodiments of the present application.
Fig. 4 is the graph of relation between velocity of longitudinal wave provided by the embodiments of the present application and strain size.
Fig. 5 is the flow chart of casing damage monitoring method provided by the embodiments of the present application.
Fig. 6 is the flow chart of the sub-step of step S110 in Fig. 5.
Icon: 1- casing damage monitors system；10- casing to be measured；20- processing terminal；30- sound wave controlled terminal；40- sound
Wave monitoring assembly；401- transmitting transducer；402- first receives energy converter；403- second receives energy converter；404- sound arrester；
50- cable.
Specific embodiment
To keep the purposes, technical schemes and advantages of the embodiment of the present application clearer, below in conjunction with the embodiment of the present application
In attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment only
It is a part of the embodiment of the application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings
The component of embodiment can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiments herein provided in the accompanying drawings is not intended to limit below claimed
Scope of the present application, but be merely representative of the selected embodiment of the application.Based on the embodiment in the application, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model of the application protection
It encloses.
Carrying out detection to casing damage in the prior art is usually directly to detect to casing by the way of, this inspection
Survey mode then needs oil/gas well to stop production, and is detected in lower throwing detection device to casing, influences to exploit benefit.Inventor passes through
The study found that during compressive deformation, the strain feelings of the rock can be preferably reflected across the acoustic velocity variation of rock for rock
Condition, for example, showing that rock reaches capacity intensity, i.e., will destroy when acoustic speed reaches peak value.And rock was deforming
The oil gas casing in rock will be damaged in journey, therefore, the strained situation of rock reflects oil gas casing
Degree of impairment.So as to obtain the degree of impairment of casing by the strained situation for monitoring rock.
Based on above-mentioned discovery, the application provides a kind of casing loss monitoring scheme, by the way that sound wave monitoring component is arranged to rock
Rock layers issue acoustic signals, and reflect signal according to sound wave and determine velocity of longitudinal wave of the acoustic signals in lithosphere, and obtain one
Velocity of longitudinal wave changing pattern in the section time.The level of strain of rock is determined according to velocity of longitudinal wave changing pattern, so that it is determined that going out
The impairment scale of casing.In this way, by being detected to lithosphere, and then determine the degree of impairment of casing, without the oil gas that stops production
Well does not influence to exploit benefit.
Referring to Fig. 1, the embodiment of the present application provides a kind of casing damage monitoring system 1, for carrying out to casing 10 to be measured
Damage monitoring, it includes processing terminal 20, sound wave controlled terminal 30 and sound wave monitoring component 40 which, which monitors system 1,.Sound
Wave controlling terminal 30 is connect with processing terminal 20 and sound wave monitoring assembly 40 respectively, wherein sound wave controlled terminal 30 and processing are eventually
Wired connection can be carried out by data line between end 20, module can also carry out wireless communication connection by wireless communication, specifically
The present embodiment is with no restriction.It can be attached by cable 50 between sound wave controlled terminal 30 and sound wave monitoring assembly 40.
In the present embodiment, processing terminal 20 can be the terminal device with data, image processing function, such as a number
Word assistant, tablet computer, personal computer, laptop etc..Sound wave controlled terminal 30 can be sonic sensor, and electricity can be used
Resistive is remodeled sonic sensor, electrostatic changing type sonic sensor, electromagnetism transform type sonic sensor etc., and concrete model does not limit
System.
Fig. 2 is please referred to, the outer wall of casing 10 to be measured is arranged in sound wave monitoring component 40, and casing 10 to be measured is mounted on rock
In rock layers.Wherein, sound wave monitoring component 40 may include multiple groups, and every group of sound wave monitoring component 40 includes multiple.Multiple groups sound wave monitoring
Component 40 is respectively arranged at 10 outer wall of casing to be measured in the lithosphere of different depth, multiple in each group sound wave monitoring component 40
Sound wave monitoring component 40 is respectively arranged at the outer wall on the different directions of the casing to be measured 10.In this way, can be respectively to set to be measured
The different parts of pipe 10 carry out damage check.
When it is implemented, can turn to be put into casing in the wellbore of well to completion, it is arranged in sleeve outer wall every certain depth section
Sound wave monitoring component 40, and same depth can be along sleeve outer wall every 90 ° of settings, one sound wave monitoring component 40, in this way, together
4 sound wave monitoring components 40 of one depth segment can cover the monitoring of 360 ° of lithosphere of well week.
In the present embodiment, sound wave monitoring component 40 is used to issue multiple sound wave letters to lithosphere locating for casing 10 to be measured
Number.Some of acoustic signals in multiple acoustic signals that sound wave monitoring component 40 issues, will be anti-after passing through lithosphere
It is emitted back towards sound wave monitoring component 40.The each sound wave received in preset period of time reflection signal is sent to sound by sound wave monitoring component 40
Wave controlling terminal 30.
Sound wave controlled terminal 30 can reflect signal to sound wave and handle after receiving sound wave reflection signal.Sound wave control
Terminal 30 processed, which is mainly used for being converted to the sound wave reflection signal in vibration signal, reflects signal in the sound wave of electrical signal form.And
Each sound wave reflection signal after conversion process is sent to processing terminal 20.
Processing terminal 20 believes the time that signal is reflected according to each sound wave after receiving each sound wave reflection signal
The corresponding velocity of longitudinal wave of each sound wave reflection signal is calculated in breath, and reflects signal according to sound wave each in above-mentioned preset period of time
Velocity of longitudinal wave obtains the velocity of longitudinal wave changing pattern in the preset period of time.Processing terminal 20 is also used to according to the velocity of longitudinal wave prestored
With the relation curve between strain size, the corresponding pass between different velocity of longitudinal wave changing patteries and differently strained grade is obtained
System.Also, level of strain corresponding with the velocity of longitudinal wave changing pattern in above-mentioned preset period of time, root are obtained according to the corresponding relationship
The impairment scale of casing 10 to be measured is obtained according to the level of strain.
In the present embodiment, by way of the relation curve between pre-rendered velocity of longitudinal wave and strain size, indulged
Corresponding relationship between wave velocity changing pattern and level of strain.When carrying out damage check, by sound wave monitoring component 40 with
Velocity of longitudinal wave of the sound wave in rock is detected, so that it is determined that the velocity of longitudinal wave changing pattern of rock to be measured out, obtains to be measured
The level of strain of rock, and then obtain the impairment scale for the casing to be measured 10 being mounted in test rock.The program is without direct
Casing is detected, therefore will not influence the benefit of oil-gas mining.And level of strain is determined by longitudinal wave changing pattern, it avoids
The problem of testing result error caused by rock different characteristics.
In the present embodiment, it before being formally monitored, needs by testing to obtain velocity of longitudinal wave and strain size
Between relation curve.Optionally, above-mentioned casing damage monitoring system 1 further includes sonic test component and strain device.It is first
First, high steep/High stress zone is marked off using seismic data, well-log information etc., underground sampling is carried out on the stratum, to be made
Rock sample needed for experiment, as test rock.Different size of stress is generated to test rock using strain device, then passes through sound
Wave test suite issues test sound wave signal, and the test sound wave that will be received when test rock is in different stress intensities
Reflection signal is sent to sound wave controlled terminal 30.Sound wave controlled terminal 30 reflects at signal the test sound wave received
Reason, and the test sound wave reflection signal after processing is sent to processing terminal 20.
Processing terminal 20 according to test sound wave reflect signal temporal information obtain the test sound wave reflection signal it is corresponding
Velocity of longitudinal wave.And the different stress intensities for testing rock correspond to different strain sizes, processing terminal 20 can be answered according to difference
Velocity of longitudinal wave and the corresponding strain size of different stress intensities under power size obtain velocity of longitudinal wave and strain the pass between size
It is curve.
Referring to Fig. 3, in the present embodiment, sound wave monitoring component 40 includes that transmitting transducer 401, first receives energy converter
402 and second receive energy converter 403, wherein first receive energy converter 402 setting transmitting transducer 401 and second receive
Between energy converter 403, the first reception energy converter 402 and the second reception energy converter 403 are set in distance.
When the damage formally to casing 10 to be measured is monitored, transmitting transducer 401 is used for locating for casing 10 to be measured
Lithosphere issue multiple acoustic signals, the first reception energy converter 402 and the second reception energy converter 403 are for receiving sound wave reflection
Signal, and the first reception energy converter 402 and the second reception energy converter 403 are anti-by each sound wave received in preset period of time respectively
It penetrates signal and is sent to sound wave controlled terminal 30.
Optionally, sound wave monitoring component 40 further includes sound arrester 404, and the setting of sound arrester 404 is in transmitting transducer 401 and the
One receives between energy converter 402, receives energy converter 402 and the second reception energy converter for transmitting transducer 401, first to be isolated
Sound wave interference between 403.
It can be seen from the above, processing terminal 20 can be obtained according to the relation curve between the velocity of longitudinal wave prestored and strain size
Corresponding relationship between different velocity of longitudinal wave changing patteries and differently strained grade.For example, the longitudinal wave speed obtained by test
Spend strain size between relation curve as shown in Figure 4 compared with bold curve when, a section of curve, velocity of longitudinal wave are in Fig. 4
Now quick ascent stage, the stage correspond to the rock compaction stage.With the continuation of stress loading, the upper raising speed of velocity of longitudinal wave
Degree reduces, such as the b section of curve.Stress locating for the stage rock is about half of ultimate strength or so, in this stage pair
It answers the generation in new crack in rock and starts to extend.When velocity of longitudinal wave reaches peak point, such as the c section in Fig. 4, in the stage
The stress of rock is about 80% of ultimate strength or so, and crack in unstable extension and is run through in this stage rock.When
When the inflection point declined occurs in velocity of longitudinal wave, i.e. d section in Fig. 4, rock reaches capacity intensity at this stage, i.e., will destroy.
Based on above-mentioned analysis, processing terminal 20 can be bent according to the relationship between obtained velocity of longitudinal wave and strain size
Line obtains the corresponding relationship between different velocity of longitudinal wave changing patteries and differently strained grade, such as in velocity of longitudinal wave in rising
When state and ascensional range are greater than preset threshold, it may be determined that level of strain is in the first estate；It is in upward status in velocity of longitudinal wave
And ascensional range be less than preset threshold when, it may be determined that strain be equal to be in the second grade；It is in velocity of longitudinal wave and is basically unchanged shape
When state, it may be determined that level of strain is the tertiary gradient；When velocity of longitudinal wave is in decline state, it may be determined that level of strain is in 4th etc.
Grade.Wherein, since the first estate, its degree of strain of the second grade, the tertiary gradient and the fourth estate is gradually increased.
When the lithosphere to 10 periphery of casing to be measured carries out sonic detection, processing terminal 20 is being received in preset period of time
Each sound wave reflection signal after, the corresponding velocity of longitudinal wave of each sound wave reflection signal can be calculated in the following manner:
In the present embodiment, prestored in processing terminal 20 first reception energy converter 402 and second receive energy converter 403 it
Between spacing distance.Signal is reflected for each sound wave, processing terminal 20 can get the first reception energy converter 402 and receive the sound
The first time point of wave reflection signal and the second reception energy converter 403 receive the second time point of sound wave reflection signal.
Sending time point and the first above-mentioned reception energy converter 402 further according to the corresponding acoustic signals of sound wave reflection signal receive
The first time point that the sound wave reflects signal obtains the first time difference value.The hair of the corresponding acoustic signals of signal is reflected according to the sound wave
The second time point that time point and the second above-mentioned reception energy converter 403 receive sound wave reflection signal out obtained for second time difference
Value.
Processing terminal 20 can be according to obtained the first time difference value, the second time difference value and the first reception energy converter 402 and second
Receive the velocity of longitudinal wave that sound wave reflection signal is calculated in the spacing distance between energy converter 403.It specifically, can be according to following public affairs
Velocity of longitudinal wave is calculated in formula:
Wherein, VpIndicate that velocity of longitudinal wave, L indicate that described first receives energy converter 402 and the second reception energy converter 403
Between spacing distance, t1Indicate first time difference value, t2Indicate second time difference value.
It wherein, further include cement circular layer between the casing 10 to be measured and lithosphere, above-mentioned first receives energy converter 402
And second receive energy converter 403 between spacing distance L can previously according to acoustic signals test rock in velocity of longitudinal wave with
And the velocity of longitudinal wave of the cement layer in test determines, which can carry out test acquisition indoors in advance.Obtaining two
After the velocity of longitudinal wave of person, specifically spacing distance L can be determined by following formula:
Wherein, VGround pIndicate velocity of longitudinal wave of the acoustic signals in test rock, VRing pIndicate acoustic signals in test cement layer
Velocity of longitudinal wave, d indicate test cement layer thickness.
The corresponding velocity of longitudinal wave of each sound wave reflection signal received in preset period of time is calculated through the above way,
In this way, then can get the velocity of longitudinal wave changing pattern in the preset period of time.
It can be seen from the above, processing terminal 20 can get pair between different velocity of longitudinal wave changing patteries and differently strained grade
It should be related to, then after obtaining the velocity of longitudinal wave changing pattern in preset period of time, can be preset according to obtained corresponding relationship
The corresponding level of strain of velocity of longitudinal wave changing pattern in period.
In the above manner, then can get the level of strain of the lithosphere outside casing 10 to be measured, and outside casing to be measured 10
The strain of lithosphere will directly influence the degree of injury of casing 10 to be measured.In the present embodiment, rock is prestored in processing terminal 20
Corresponding relationship between the differently strained grade of stone impairment scale different from casing.
Processing terminal 20, can be according to the rock prestored after the level of strain for obtaining the lithosphere outside casing 10 to be measured
Corresponding relationship between differently strained grade impairment scale different from casing obtains the strain etc. of the lithosphere obtained with measurement
The impairment scale of the corresponding casing 10 to be measured of grade.It should be appreciated that the level of strain in lithosphere shows that lithosphere degree of strain is got over
When big, then correspondingly, the degree of injury of casing 10 to be measured is more serious, conversely, then the degree of injury of casing 10 to be measured is smaller.
It is on the one hand to use the strained situation for the lithosphere for detecting 10 periphery of casing to be measured to be measured to obtain in the present embodiment
The mode of 10 degree of impairment of casing detects casing 10 to be measured damage, can avoid needing to stop production and lower throwing detecting instrument extremely covers
The drawbacks of being detected in pipe and exploitation benefit impacted.On the other hand, using testing in advance rock, to obtain
The relation curve of different velocity of longitudinal waves and differently strained size, and then it is corresponding with level of strain to obtain velocity of longitudinal wave changing pattern
The mode of relationship, can be obtained according to the velocity of longitudinal wave changing pattern in the preset period of time of acquisition corresponding in formal monitoring
Level of strain, and then obtain the impairment scale of casing 10 to be measured.In this way, judging level of strain using changing pattern, can avoid
Different rocks due to different characteristics in specifically strain size gap and the drawbacks of bring error to result.
Referring to Fig. 5, another embodiment of the application also provides a kind of casing damage monitoring method, the casing damage monitoring side
Method is applied to above-mentioned casing damage and monitors system 1, and described sleeve pipe damage monitoring system 1 includes processing terminal 20, sound wave controlled end
End 30 and sound wave monitoring component 40, the sound wave controlled terminal 30 respectively with the processing terminal 20 and the sound wave monitoring component
The outer wall of casing 10 to be measured is arranged in 40 connections, the sound wave monitoring component 40, and the casing 10 to be measured is mounted in lithosphere,
The specific steps of the monitoring method are described in detail below:
Step S110, the sound wave monitoring component 40 issues multiple acoustic signals to lithosphere, and preset period of time is inscribed
The each sound wave reflection signal received is sent to the sound wave controlled terminal 30.
Step S120, the sound wave controlled terminal 30 handle each sound wave reflection signal received, and will
Treated, and each sound wave reflection signal is sent to the processing terminal 20.
Step S130, the processing terminal 20 are calculated each described according to the temporal information of each sound wave reflection signal
Sound wave reflects the corresponding velocity of longitudinal wave of signal, and is obtained according to the velocity of longitudinal wave that sound wave each in the preset period of time reflects signal
Velocity of longitudinal wave changing pattern in the preset period of time.
Step S140, the processing terminal 20 are obtained according to prestoring velocity of longitudinal wave and straining the relation curve between size
Corresponding relationship between different velocity of longitudinal wave changing patteries and differently strained grade, and according to the corresponding relationship obtain with it is described pre-
If the corresponding level of strain of velocity of longitudinal wave changing pattern in the period obtains the damage of the casing to be measured 10 according to the level of strain
Hurt grade.
Optionally, the sound wave monitoring component 40 includes that transmitting transducer 401, first receives energy converter 402 and second
Energy converter 403 is received, described first, which receives the setting of energy converter 402, receives transducing in the transmitting transducer 401 and described second
Between device 403, described first, which receives energy converter 402 and described second, receives the setting of the interval of energy converter 403.
Referring to Fig. 6, above-mentioned sound wave monitoring component 40 issues multiple acoustic signals to lithosphere, and will be in preset period of time
The step of each sound wave reflection signal received is sent to sound wave controlled terminal 30 specifically can be real by following sub-step
It is existing:
Step S111, the transmitting transducer 401 issue multiple acoustic signals to lithosphere.
Step S112, described first, which receives energy converter 402 and described second, receives the reception sound wave reflection letter of energy converter 403
Number, and each sound wave received in preset period of time reflection signal is sent to the sound wave controlled terminal 30.
It is apparent to those skilled in the art that for convenience and simplicity of description, the method for foregoing description
Specific work process, no longer can excessively be repeated herein with reference to the corresponding process in aforementioned system.
In conclusion the embodiment of the present application provides a kind of casing damage monitoring system 1 and method, pass through sound wave monitoring component
40 issue multiple acoustic signals, and in the inscribed wave reflection signal that quiets down of preset period of time.Then, by sound wave controlled terminal 30 to sound
Wave reflection signal is handled, and by treated, sound wave reflection signal is sent to processing terminal 20.Processing terminal 20 is according to sound wave
The temporal information for reflecting signal calculates corresponding velocity of longitudinal wave, and obtains the velocity of longitudinal wave changing pattern in preset period of time.Processing
Terminal 20 further according to the relation curve between the velocity of longitudinal wave that prestores and strain size, obtain different velocity of longitudinal wave changing patteries with
Corresponding relationship between differently strained grade obtains and the velocity of longitudinal wave changing pattern pair in preset period of time according to the corresponding relationship
The level of strain answered, to obtain the impairment scale of casing 10 to be measured.In this way, being avoided out without directly being detected to casing
The problem of now influencing exploitation benefit, and level of strain is determined using velocity of longitudinal wave changing pattern, avoid different rock behavio(u)rs from causing
Resultant error.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of casing damage monitors system, which is characterized in that described sleeve pipe damage monitoring system includes processing terminal, sound wave control
Terminal processed and sound wave monitoring component, the sound wave controlled terminal connect with the processing terminal and the sound wave monitoring component respectively
It connects, the outer wall of casing to be measured is arranged in the sound wave monitoring component, and the casing to be measured is mounted in lithosphere；
The sound wave monitoring component is used to issue multiple acoustic signals, and each sound that will be received in preset period of time to lithosphere
Wave reflection signal is sent to the sound wave controlled terminal；
The sound wave controlled terminal is used to handle each sound wave reflection signal received, and will treated each institute
It states sound wave reflection signal and is sent to the processing terminal；
The processing terminal is used to that each sound wave reflection letter to be calculated according to the temporal information of each sound wave reflection signal
Number corresponding velocity of longitudinal wave, and the preset period of time is obtained according to the velocity of longitudinal wave that sound wave each in the preset period of time reflects signal
Interior velocity of longitudinal wave changing pattern；
The processing terminal is also used to obtain different longitudinal waves according to the relation curve between the velocity of longitudinal wave prestored and strain size
Corresponding relationship between speed variation and differently strained grade, and according in corresponding relationship acquisition and the preset period of time
The corresponding level of strain of velocity of longitudinal wave changing pattern, the impairment scale of the casing to be measured is obtained according to the level of strain.
2. casing damage according to claim 1 monitors system, which is characterized in that the sound wave monitoring component includes transmitting
Energy converter, first receive energy converter and the second reception energy converter, and described first, which receives energy converter, is arranged in the transmitting transducing
Device and described second receives between energy converter, and described first, which receives energy converter and described second, receives the setting of energy converter interval；
The transmitting transducer is used to issue multiple acoustic signals to lithosphere；
The first reception energy converter and the second reception energy converter are used to receive sound wave reflection signal, and will be in preset period of time
The each sound wave reflection signal received is sent to the sound wave controlled terminal.
3. casing damage according to claim 2 monitors system, which is characterized in that the processing terminal is used for by following
The corresponding velocity of longitudinal wave of each sound wave reflection signal is calculated in mode:
Signal is reflected for each sound wave, when acquisition the first reception energy converter receives the first of sound wave reflection signal
Between put and it is described second reception energy converter receive the sound wave reflection signal the second time point；
When reflecting sending time point and the first time point acquisition first of the corresponding acoustic signals of signal according to the sound wave
Difference obtains the second time difference value according to the sending time point and second time point；
Energy converter and described second, which is received, according to first time difference value, second time difference value, described first receives energy converter
Between spacing distance the velocity of longitudinal wave of sound wave reflection signal is calculated.
4. casing damage according to claim 3 monitors system, which is characterized in that the longitudinal wave speed of the sound wave reflection signal
Degree is calculated as follows according to first time difference value, second time difference value and the spacing distance:
Wherein, VpIndicate that velocity of longitudinal wave, L indicate that described first receives the interval between energy converter and the second reception energy converter
Distance, t1Indicate first time difference value, t2Indicate second time difference value.
5. casing damage according to claim 2 monitors system, which is characterized in that the sound wave monitoring component further include every
Sound device, the sound arrester setting receives between energy converter in the transmitting transducer and described first, for the transmitting to be isolated
Energy converter, the described first sound wave received between energy converter and the second reception energy converter interfere.
6. casing damage described in -5 any one monitors system according to claim 1, which is characterized in that the sound wave monitoring group
Part includes multiple groups, every group of sound wave monitoring component include it is multiple, multiple groups sound wave monitoring component is respectively arranged at the rock of different depth
Sleeve outer wall to be measured in layer, multiple sound wave monitoring components in each group sound wave monitoring component are respectively arranged at the casing to be measured
Different directions on outer wall.
7. casing damage described in -5 any one monitors system according to claim 1, which is characterized in that described sleeve pipe damage prison
Examining system further includes sonic test component and strain device；
The strain device is used to generate different size of stress to test rock；
The sonic test component is used for when the test rock is in different stress intensities, issues test sound wave signal, and
The test sound wave received reflection signal is sent to the sound wave controlled terminal；
The sound wave controlled terminal is used to handle the test sound wave reflection signal received, and is sent to the processing eventually
End；
The processing terminal is used to obtain test sound wave reflection signal according to the temporal information that the test sound wave reflects signal
Corresponding velocity of longitudinal wave, and according under different stress intensities velocity of longitudinal wave and the corresponding strain size of different stress intensity obtain
Relation curve between the velocity of longitudinal wave and strain size.
8. casing damage according to claim 7 monitors system, which is characterized in that prestore rock in the processing terminal
Differently strained grade impairment scale different from casing between corresponding relationship；
The processing terminal is used for according to the corresponding relationship between the differently strained grade prestored and different impairment scales, obtain and
The impairment scale of the corresponding casing to be measured of the level of strain monitored in the preset period of time.
9. a kind of casing damage monitoring method, which is characterized in that be applied to casing damage and monitor system, described sleeve pipe damage monitoring
System includes processing terminal, sound wave controlled terminal and sound wave monitoring component, and the sound wave controlled terminal is whole with the processing respectively
End is connected with the sound wave monitoring component, and the outer wall of casing to be measured, the casing peace to be measured is arranged in the sound wave monitoring component
In lithosphere, the monitoring method includes:
The sound wave monitoring component issues multiple acoustic signals to lithosphere, and each sound wave received in preset period of time is anti-
It penetrates signal and is sent to the sound wave controlled terminal；
Each sound wave reflection signal that the sound wave controlled end-on receives is handled, and will treated each sound
Wave reflection signal is sent to the processing terminal；
The processing terminal is calculated each sound wave according to the temporal information of each sound wave reflection signal and reflects signal pair
The velocity of longitudinal wave answered, and obtained in the preset period of time according to the velocity of longitudinal wave that sound wave each in the preset period of time reflects signal
Velocity of longitudinal wave changing pattern；
The processing terminal obtains different velocity of longitudinal wave variations according to prestoring velocity of longitudinal wave and straining the relation curve between size
Corresponding relationship between mode and differently strained grade, and obtained and the longitudinal wave speed in the preset period of time according to the corresponding relationship
The corresponding level of strain of changing pattern is spent, the impairment scale of the casing to be measured is obtained according to the level of strain.
10. casing damage monitoring method according to claim 9, which is characterized in that the sound wave monitoring component includes hair
Energy converter, the first reception energy converter and the second reception energy converter are penetrated, the first reception energy converter setting is changed in the transmitting
Can be between device and the second reception energy converter, described first, which receives energy converter and described second, receives the setting of energy converter interval；
The sound wave monitoring component issues multiple acoustic signals to lithosphere, and each sound wave received in preset period of time is anti-
Penetrate the step of signal is sent to the sound wave controlled terminal, comprising:
The transmitting transducer issues multiple acoustic signals to lithosphere；
Described first, which receives energy converter and described second, receives energy converter reception sound wave reflection signal, and will receive in preset period of time
To each sound wave reflection signal be sent to the sound wave controlled terminal.
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| CN111307836A (en) * | 2019-12-10 | 2020-06-19 | 西南石油大学 | PE pipe performance testing device under seismic wave load |
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| CN106199712A (en) * | 2016-06-29 | 2016-12-07 | 中国石油天然气集团公司 | A kind of method and device determining pressure break casing deformation region |
| CN109563736A (en) * | 2016-06-01 | 2019-04-02 | 斯伦贝谢技术有限公司 | The estimation of horizontal stress and nonlinear constant in the anisotropic formation of interlayer carbonate horizon in such as organic shale reservoir |
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| US20040246816A1 (en) * | 2003-05-19 | 2004-12-09 | Ogle Peter C. | Well integrity monitoring system |
| CN104295290A (en) * | 2009-05-27 | 2015-01-21 | 光学感应器控股有限公司 | Fracture monitoring |
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