CN110487891A - A kind of casing damage detection method, device and system based on transient electromagnetic emission array - Google Patents
A kind of casing damage detection method, device and system based on transient electromagnetic emission array Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of casing damage detection method, device and system based on transient electromagnetic emission array；The device includes: that control remote short section and at least one transmitting receive pipe nipple；Wherein, each transmitting receives pipe nipple, the transient electromagnetic sensor array of described device radial direction is parallel to comprising one, the transient electromagnetic sensor array includes a transient electromagnetic emission array and a transient electromagnetic receiving transducer, the transient electromagnetic emission array includes multiple transmitting array elements, each transmitting array element uses corresponding emission current by the control command of the control remote short section, so that the emitted energy of the emission array focuses to setting regions in desired cannula.
Description
Technical field
The present embodiments relate to oil gas field testing techniques of equipment fields, more particularly to a kind of transient electromagnetic that is based on to emit battle array
Casing damage detection method, the device and system of column.
Background technique
The casing service life increase for going into operation oily with domestic and international oil gas field, along with reservoir stress, chemical attack etc.
All there is different degrees of damage, such as undergauge, deformation, corrosion and rupture in factor, most of oil-gas casing.These damages all will
Directly influence oil gas well yield and service life.And oil/gas well can be found in time by detecting to casing damage
The variation of casing programme and degree of impairment, prevention and maintenance to casing play the role of very big.Currently, utilizing transient electromagnetic method
Logging technique is widely used since it will not damage well bore in well logging and have well logging performance well.
Transient electromagnetic method is also referred to as time domain electromagnetic method (TEM, Time domain electromagnetic methods),
Its principle is to emit the pulsatile once electromagnetic field of transition, a magnetic to underground using manually pulse current is subject in transmitting coil
Field generates ring of eddy when encountering surrounding medium, to form secondary magnetic field.In pulsatile once magnetic field tempus intercalare, coil is utilized
Or grounding electrode observes secondary turbulence field, and obtains formation conductivity information by the attenuation law inverting that analysis receives signal.
It is limited to the environment of narrow space and high temperature and pressure under oil/gas well, the letter of reception signal measured by transient electromagnetic method
It makes an uproar than seriously affecting its detection performance.Current conventional scheme generallys use the coaxial multiturn by being wrapped in around magnetic core or air-core
Emit with receiving coil and improve signal-to-noise ratio, and by detecting different crack shapes, it was demonstrated that longitudinal sensor is detecting big face
Product aspect is more preferable than lateral pickup performance.But with the increase of longitudinal multiturn coil sensor the number of turns, the length of sensor with
And the distance between transmitting coil and receiving coil also will increase, this will lead to receipt signal model serious distortion, seriously affect
The precision of non-destructive testing.In addition, there are also some schemes to use the transient electromagnetic with multiple receiving transducers and single transmitting probe
Casing damage detection system receives the relationship between signal using each array element of receiving array, is eliminated by array signal processing
It receives and dispatches model caused by spacing to be distorted, improves signal-to-noise ratio.
But the reception array element number in receiving array be cannot be unlimited increased, this is because with array number is received
Purpose increases, and the distance of newly-increased receiving transducer range transmission probe is also increasingly remoter, causes signal-to-noise ratio lower and lower.Thus may be used
Know, receiving transducer is after increasing to a certain extent, then newly-increased receiving transducer mentions the signal-to-noise ratio of casing damage detection system entirety
Height effect is less, therefore, current to need to improve signal-to-noise ratio in limited probe length.
Summary of the invention
In order to solve the above technical problems, an embodiment of the present invention is intended to provide a kind of casings based on transient electromagnetic emission array
Damage detecting method, device and system can obtain higher signal-to-noise ratio and better performance.
The technical scheme of the present invention is realized as follows:
In a first aspect, the embodiment of the invention provides a kind of, the casing damage based on transient electromagnetic emission array detects dress
It sets, described device includes: that control remote short section and at least one transmitting receive pipe nipple；Wherein,
Each transmitting receives pipe nipple, and the transient electromagnetic sensor array of described device radial direction is parallel to comprising one,
The transient electromagnetic sensor array includes a transient electromagnetic emission array and a transient electromagnetic receiving transducer, the transition
Electromagnetic Launching array includes multiple transmitting array elements, the control command use pair that each transmitting array element passes through the control remote short section
The emission current answered, so that the emitted energy of the emission array focuses to setting regions in desired cannula.
Second aspect, the embodiment of the invention provides a kind of casing damage detection systems based on transient electromagnetic emission array
System, the system comprises: the casing damage described in host computer and first aspect based on transient electromagnetic emission array detects dress
It sets；Wherein,
The host computer is connected by cable with described device, and the host computer is configured to send each hair to described device
Emission current needed for penetrating array element；And receive the summary information that receiving transducer is sent in described device, the summary information packet
Include the ambient temperature information of measuring signal and device that the receiving transducer detects；And it is true according to the measuring signal
The faulted condition for the setting regions in casing of setting the goal.
The third aspect, the embodiment of the invention provides a kind of casing damage detection sides based on transient electromagnetic emission array
Method, the method are applied to the casing damage detection system based on transient electromagnetic emission array described in second aspect, the side
Method includes:
Based at least one emission array to the setting regions emission current of desired cannula；Wherein, each emission array
Emission current be used to the emitted energy of the emission array focusing to the setting regions；
Measuring signal is detected by receiving transducer；
The faulted condition of setting regions in the desired cannula is determined according to the measuring signal.
The embodiment of the invention provides a kind of casing damage detection method based on transient electromagnetic emission array, device and it is
System；Due to using the emission array of multi-emitting array element composition, transmitting signal can be focused, be avoided using single
Transmitting probe causes emission current direction and the uncontrollable situation of size, can obtain higher signal-to-noise ratio and better property
Energy.
Detailed description of the invention
Fig. 1 is a kind of casing damage detection device composition based on transient electromagnetic emission array provided in an embodiment of the present invention
Schematic diagram；
Fig. 2 is that a kind of transmitting provided in an embodiment of the present invention receives pipe nipple composition schematic diagram；
Fig. 3 is a kind of detection contrast schematic diagram provided in an embodiment of the present invention；
Fig. 4 is a kind of control remote short section composition schematic diagram provided in an embodiment of the present invention；
Fig. 5 is another casing damage detection device group based on transient electromagnetic emission array provided in an embodiment of the present invention
At schematic diagram；
Fig. 6 is a kind of casing damage detection system composition based on transient electromagnetic emission array provided in an embodiment of the present invention
Schematic diagram；
Fig. 7 is another casing damage detection system group based on transient electromagnetic emission array provided in an embodiment of the present invention
At schematic diagram；
Fig. 8 is the Working mould of the casing damage detection device provided in an embodiment of the present invention based on transient electromagnetic emission array
Type schematic diagram；
Fig. 9 is emulation schematic diagram provided in an embodiment of the present invention；
Figure 10 is a kind of casing damage detection method stream based on transient electromagnetic emission array provided in an embodiment of the present invention
Journey schematic diagram；
Figure 11 is a kind of casing damage detection method tool based on transient electromagnetic emission array provided in an embodiment of the present invention
Body implementation process diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
At present in the conventional detection scheme for carrying out casing damage using transient electromagnetic method, single transmitting array element hair is generallyd use
Radio stream, multiple receiving arrays for receiving array element composition receive transient electromagnetic signal；Transmitting-receiving is eliminated by array signal processing
The distortion of model caused by spacing, improves signal-to-noise ratio.But the number for existing simultaneously array element in receiving array cannot infinitely increase, and connect
After receiving probe increase to a certain extent, then newly-increased probe number acts on little defect to the signal-to-noise ratio raising of system entirety.
Based on the above issues, the embodiment of the present invention is desirable to gather emitted energy by the quantity for improving transmitting array element
Coke arrives interested region, improves the signal-to-noise ratio of signal, to effectively detect the degree of impairment of casing.Referring to Fig. 1, it illustrates
A kind of casing damage detection device 1 based on transient electromagnetic emission array provided in an embodiment of the present invention, described device 1 include:
It controls remote short section 11 and at least one transmitting receives pipe nipple 12；Wherein, as shown in Fig. 2, each transmitting receives pipe nipple 12,
It is parallel to the radial transient electromagnetic sensor array of described device 1 comprising one, the transient electromagnetic sensor array includes one
A transient electromagnetic emission array 121 and a transient electromagnetic receiving transducer 122, the transient electromagnetic emission array 121 include more
A transmitting array element 1211, each transmitting array element 1211 use corresponding transmitting by the control command of the control remote short section 11
Electric current, so that the emitted energy of the emission array 121 focuses to setting regions in desired cannula.
It should be noted that during specific implementation, as shown in Fig. 2, for individually emitting array element, emit array element with
And receiving transducer may each be the electromagnetic coil with different diameters, magnetic core and coiling circle number, to have different detections
Range and performance, to be suitable for different detection environment.It is to be appreciated that the casing damage based on transient electromagnetic emission array is examined
It surveys in device 1 and may include one or more transmitting reception pipe nipple 12, and when there is multiple transmittings to receive pipe nipple 12, wherein respectively
A transmitting, which receives the emission array 121 in pipe nipple 12, can form a big emission array, promote detectivity.
In addition, as shown in figure 3, the detection direction of the single transmitting probe of top half in the longitudinal direction can not be gathered in figure
Coke, and in figure lower half portion emission array, since transmitting array element each in emission array is all made of different size and non-Tongfang
To emission current, so that emitted energy is compared single transmitting probe in the longitudinal direction and focus on certain area, obtain higher
Signal-to-noise ratio and better performance.
In conjunction with Fig. 1 and technical solution shown in Fig. 2, referring to fig. 4, the control remote short section 11, including Temperature measuring section
Divide 111, TCP data segment 112, control circuit part 113 and power unit 114；
Wherein, the temperature measuring section 111 is configured to implement the environment temperature that monitoring described device 1 is presently in；
The TCP data segment 112 is configured to emission current needed for receiving each transmitting array element sent as host computer,
And the measuring signal that the receiving transducer detects；And monitor the measuring signal and the temperature measuring section
Ambient temperature information summarize after by coupled capacitor by summary information carrier wave on cable；And it will be described by the cable
Summary information is sent to host computer；
The control circuit part 113, the electricity of transmitting needed for being configured to each transmitting array element sent according to the host computer
It flows to the transmitting and receives the transmission control command of pipe nipple 12, the control command receives the transmitting of pipe nipple 12 for controlling the transmitting
With the interval time for receiving signal；
The power unit 114 is configured to receive pipe nipple offer electric energy to the control remote short section and the transmitting.
For above-mentioned implementation, in the specific implementation process, temperature measuring section 111 may include temperature sensor and
Its peripheral circuit, can real-time monitoring device 1 underground environment temperature, with ensure device 1 operate normally.TCP data segment
112 can not only receive the emission current needed for each transmitting array element sent as host computer, but also can receive by institute
It states transmitting and receives receiving transducer 122 in pipe nipple 12 and measure obtained transient electromagnetic signal, and by measuring signal and Temperature measuring section
Divide the temperature informations of 111 measurements to be packaged together to summarize, data carrier will be summarized on single-core cable by coupled capacitor, and via
Single-core cable is sent to host computer.The emission current according to needed for each transmitting array element that host computer is sent of control circuit part 113
Send control command and receive pipe nipple 12 to the transmitting, thus control one or more transmitting reception pipe nipples 12 according to it is certain when
Between interval transmitting and receive signal, said one or multiple transmittings reception pipe nipple 12 can be respectively by different control signal controls
System guarantees that each transmitting receives pipe nipple 12 mutually for example, controlling remote short section 11 and can chronologically send corresponding control signal
It does not interfere, data orderly upload.Power unit 114 includes two DC-DC power supply modules and multiple integrated voltage-stabilized pipes, is the control
Remote short section 11 processed and transmitting receive pipe nipple 12 and provide electric energy.
For above technical scheme, in one possible implementation, referring to Fig. 5, described device 1 further include: horse cage
First 13, it is used for described device 1 and cable connection.
For above technical scheme, in one possible implementation, referring to Fig. 5, described device 1 further include: be located at
Upper centralizer 14, the lower centralizer 15 at described device both ends, to guarantee that described device 1 is always held at the axle center of wellbore in underground
Position.
In conjunction with above two possible implementation, specifically, Fig. 5 shows specific pattern when device 1 is realized, horse
Halter 13 is connected for device 1 with single-core cable, can guarantee that the communication of the cable core and control remote short section 11 of single-core cable is logical
Disconnected and power supply circuit insulation is good, and quickly can dismantle and connect, so that well logging is gone on smoothly.It helps above and below
14,15 points of positive device is to replace various sizes of centralizer positioned at the both ends of device 1 according to wellbore size, can guarantee to fill in this way
Set 1 shaft core position that wellbore is always held in well logging, i.e. the transient electromagnetic sensor axle center that remains at wellbore
Position, so that it is same that transmitting, which receives the transmitting of transient electromagnetic sensor and receiving coil and wellbore, casing, cement layer in pipe nipple 12,
Heart circle, avoid transient electromagnetic sensor the decentralization of well logging and during above mention it is eccentric and shake, to bring detection error.
It is above-mentioned to be based on wink by the above-mentioned elaboration for the casing damage detection device 1 based on transient electromagnetic emission array
The casing damage detection device 1 of power transformation magnetic emission array, due to the emission array using multi-emitting array element composition, can be with
Transmitting signal is focused, avoids causing emission current direction and the uncontrollable situation of size using single transmitting probe,
Higher signal-to-noise ratio and better performance can be obtained.
Based on the identical inventive concept of preceding solution, referring to Fig. 6, it illustrates one kind provided in an embodiment of the present invention
Casing damage detection system 6 based on transient electromagnetic emission array, the system 6 include: host computer 61 and aforementioned techniques side
Based on the casing damage detection device 1 of transient electromagnetic emission array described in case；Wherein,
The host computer 61 is connected by cable 62 with described device 1, and the host computer 61 is configured to described device 1
Emission current needed for sending each transmitting array element；And the summary information that receiving transducer is sent in described device 1 is received, it is described
Summary information includes the ambient temperature information of the measuring signal that the receiving transducer detects and device；And according to described
Measuring signal determines the faulted condition of setting regions in desired cannula.
During specific implementation, it should be noted that host computer 61 may include TCP data segment, data processing division
Point, depth calculation part and image displaying part.Depth information locating for downhole instrument can be monitored in real time in depth calculation part,
The priori knowledge of casing installation is read simultaneously, the structure of 1 place depth casing of present apparatus is estimated, according to the knot of present casing
Emission current needed for structure computing device 1 respectively emits array element, concurrent feed apparatus 1.TCP data segment can receive simultaneously simultaneously
Save the detection data that described device 1 uploads, cannula structure and each transmitting array element at data processing section combination current depth
Emission current, it is not damaged to judge that current depth casing has, and such as have damage, degree of impairment quantified.At current depth
Cannula structure, the testing result of real-time damage check result and history can utilize curve and light by image displaying part
Spectral intensity figure is intuitively shown.
In addition, in the specific implementation process, as shown in fig. 6, device 1 can by single-core cable 62 successively with logging winch
63 are connected with host computer 61.Speed of 63 control device 1 of logging winch in well as required raises and decentralizes.Single-core cable 62 is used
Each transmitting array element that the host computer 61 calculates is transmitted in conveying described device 1, for the power supply of described device 1, to described device 1
Emission current information and the temperature information and transmitting reception pipe nipple that control remote short section 11 measurement is transmitted to host computer 61
12 collected transient electromagnetic signals.In most of conventional implementation, host computer 61 can be arranged in logging winch 63,
As shown in fig. 7, being followed successively by casing, water from the inside to the outside in well based on the casing damage detection device 1 of transient electromagnetic emission array
Mud layer and stratum.
For technical solution shown in fig. 6, in one possible implementation, the host computer 61 is configured that
Emission current needed for determining each emission array according to the prior information of the desired cannula；Wherein, described
Emission current needed for each emission array is used to the emitted energy of the emission array focusing to the setting regions；
The damage of the setting regions is determined according to the measuring signal that the prior information and the receiving transducer detect
Hurt state.
It should be noted that it is each to calculate emission array by the prior information of depth cannula structure where downhole instrument
Emission current needed for array element, so that the Voice segment for controlling emission array transmitting improves letter in our interested regions
Number signal-to-noise ratio.The receiving transducer that transmitting receives in pipe nipple is sent to host computer, host computer connection after receiving transient electromagnetic signal
The emission current information for closing cannula structure prior information and each transmitting array element judges that casing is damaged with the presence or absence of damage, and by casing
Hurt the specific scale degree of impairment of detection method.Meanwhile the host computer moment detects the downhole instrument of the control remote short section measurement
Temperature information, it is ensured that downhole instrument works normally.
For above-mentioned implementation, it is preferable that the prior information of the desired cannula includes the priori of the desired cannula
Wall thickness, correspondingly, the host computer 61 is configured that
The wall-thickness measurement of the setting regions is determined according to the measuring signal that the receiving transducer detects；
The emitted energy for judging the emission array according to the relationship between the wall-thickness measurement and the priori wall thickness is
It is no to focus to the setting regions；
If not focusing to the setting regions, hair needed for redefining each emission array according to the wall-thickness measurement
Radio stream, and emission current needed for each transmitting array element redefined to described device transmission；
If focusing to the setting regions, institute is judged according to the relationship between the wall-thickness measurement and the measurement threshold value of setting
Setting regions is stated with the presence or absence of damage；
If the wall-thickness measurement is less than the measurement threshold value of the setting, it is determined that there is no damages for the setting regions；
If the wall-thickness measurement is not less than the measurement threshold value of the setting, it is determined that there is damage in the setting regions, and
It is measured according to degree of injury of the wall-thickness measurement to the desired cannula setting regions.
It should be noted that the feasibility in order to illustrate above-mentioned implementation, the embodiment of the present invention by the following contents into
Row demonstration.
To simplify the process of argumentation, set casing, cement layer and stratum modeling as conductivity, magnetic conductivity and dielectric constant respectively not
Identical uniform dielectric, the working model of the casing damage detection device 1 based on transient electromagnetic emission array is as shown in figure 8, each
Layer medium is respectively iron core, air, casing, cement layer and stratum, and corresponding conductivity, magnetic conductivity and dielectric constant are respectively
(μ1,ε1,σ1), (μ2,ε2,σ2), (μ3,ε3,σ3), (μ4,ε4,σ4) and (μ5,ε5,σ5)；Radius is followed successively by r1, r2, r3, r4, r5,
Middle stratum radius r5For infinity.The center of emission array and receiving transducer is all located at coordinate origin, N number of transmitting array element distribution
It is respectively z at a distance from receiving transducer in z-axis direction1,z2,…,zN.Overall structure frame reference Fig. 6 or Fig. 7 institute of system
Show.
According to Maxwell equation:
Wherein D is electric displacement vector, and E is electric field vector, and J is current density, and B is magnetic flux density vector, and H is magnetic
Field intensity vector.Solving above-mentioned equation and can acquiring first layer medium inside radius locating for the receiving transducer is the magnetic field strength at r
For
Wherein, z=[z1 z2 … zN]1×N, I=[I1 I2 … IN]1×N, InEmit the emission current of array element for n-th,
D=r3-r2For casing thickness, HnThe magnetic field strength for emitting array element effect for n-th, is expressed as
Wherein, I0(*) indicates that 0 rank of the first kind answers argument Bessel function, TnEmit the number of turns of array element for n-th, C is
Coefficient is penetrated, related with the geometric parameter on stratum, x and λ are the variable introduced and meet λ2-x2=μ1ε1ω2-iμ1σ1ω。
The induced electromotive force that then receiving transducer receives may be expressed as: in time domain
U (t, z, d, I)=IT·Q(t,z,d) (5)
In formula, Q (t, zn, d) and=[Q (t, z1,d) Q(t,z2,d) … Q(t,zN, d)], Q (t, zn, d) and it is n-th of transmitting
Array element emission current acts on the induced electromotive force on receiving transducer when being 1A.
It can be known by formula (5), by changing the size of each transmitting array element emission current, adjustable receiving transducer
Induced electromotive force, it can adjust the emitted energy in the receiving transducer cross-section.It, can be by each transmitting using this characteristic
The emission current of array element is adjusted to suitably be worth, so that emitted energy is gathered in interested setting regions.In ambient noise
In the case where independent same distribution, the case where energy accumulating, can be presented as the intensity of induced electromotive force.Therefore, gather to realize to emit
Coke can set up the region of M centered on origin in the z-direction, set the receiving transducer that there is identical the number of turns in each region, then
Keep the induced electromotive force of the receiving transducer in interested setting regions strong and the induced electromotive force of the receiving transducer in other regions
It is weak, since realize transmitting focusing.
Then the induced electromotive force of the receiving transducer in m-th of region is Um(t,zm, d, I) and=IT·Q(t,zm,d) (6)
Wherein zm=[z1,m z2,m … zN,m]1×N, zn,mFor n-th of transmitting array element to the receiving transducer in m-th of region
Distance.
The then vector of the receiving transducer induced electromotive force composition in M region are as follows:
U1-M(t, I, d, z)=IT·Q1-M(t,d,z) (7)
Wherein, Q1-M(t, d, z)=[Q1(t,d,z1) Q2(t,d,z2) … QM(t,d,zM)]N×M。
It for emitting signal focus in p region, needs to control the emission current of each transmitting array element, makes to receive in p region
The induced electromotive force U of probep(t,zp, d, I) and while remain unchanged, the induced electromotive force of receiving transducer is minimum in other regions.
It can be calculated according to linear constraint minimal variance (LCMV, Linearly Constrained Minimum-Variance) criterion
The emission current of each transmitting array element, i.e., shown in formula 8
Wherein,
It solves:
The emission current that each transmitting array element can be then calculated by equation 9 above, makes emitted energy be gathered in interested p region
It is interior, to improve the signal-to-noise ratio of signal.
Fig. 9 is the emulation schematic diagram of above-mentioned technical proposal, 800 receiving areas set up in the z-direction, such as seat horizontal in Fig. 9
Shown in mark, interested search coverage is set as intermediate receiving area.Ordinate is normalized induced electromotive force, in Fig. 9
It compared traditional single detection scheme of transmitting probe and the technical solution of the embodiment of the present invention, wherein the array number used is 3,
5,300.By comparison as can be seen that the technical solution of the embodiment of the present invention is used, even if can also make only with 3 array elements
Emitted energy focuses on interested region well, and with the increase of transmitting array element number, the performance of emitted energy focusing
Also it can further increase.But it is constrained to underground narrow space, the increase for emitting array element number can greatly improve the hard of system
The size of part complexity and instrument, therefore in actual application, it can need according to the actual situation with detection using suitable
Array element number.
Based on the identical inventive concept of technical solution described in previous embodiment, referring to Figure 10, it illustrates of the invention real
A kind of casing damage detection method based on transient electromagnetic emission array of example offer is applied, the method is applied to aforementioned techniques side
Based on the casing damage detection system of transient electromagnetic emission array described in case, which comprises
S101: based at least one emission array to the setting regions emission current of desired cannula；Wherein, each transmitting
The emission current of array is used to the emitted energy of the emission array focusing to the setting regions；
S102: measuring signal is detected by receiving transducer；
S103: the faulted condition of setting regions in the desired cannula is determined according to the measuring signal.
It is to be appreciated that technical solution shown in Fig. 10, can by described in previous embodiment based on transient electromagnetic
The casing damage detection system of emission array is realized, therefore, provided in an embodiment of the present invention to emit battle array based on transient electromagnetic
Casing damage detection system based on transient electromagnetic emission array described in the casing damage detection method and previous embodiment of column
It unites technical advantage and effect having the same, the embodiment of the present invention does not repeat them here.
In one possible implementation, described to be sent out based at least one emission array to the setting regions of desired cannula
Radio stream, comprising:
Emission current needed for determining each emission array according to the prior information of the desired cannula；Wherein, described
Emission current needed for each emission array is used to the emitted energy of the emission array focusing to the setting regions；
Correspondingly, the faulted condition that setting regions in the desired cannula is determined according to the measuring signal, comprising:
The faulted condition of the setting regions is determined according to the measuring signal that the prior information and the receiving transducer detect.
For above-mentioned implementation, preferably for, it is described to be detected according to the prior information and the receiving transducer
Measuring signal determine the faulted condition of the setting regions, comprising:
The wall-thickness measurement of the setting regions is determined according to the measuring signal that the receiving transducer detects；
The emitted energy for judging the emission array according to the relationship between the wall-thickness measurement and the priori wall thickness is
It is no to focus to the setting regions；
If not focusing to the setting regions, hair needed for redefining each emission array according to the wall-thickness measurement
Radio stream, and emission current needed for each transmitting array element redefined to described device transmission；
If focusing to the setting regions, institute is judged according to the relationship between the wall-thickness measurement and the measurement threshold value of setting
Setting regions is stated with the presence or absence of damage；
If the wall-thickness measurement is less than the measurement threshold value of the setting, it is determined that there is no damages for the setting regions；
If the wall-thickness measurement is not less than the measurement threshold value of the setting, it is determined that there is damage in the setting regions, and
It is measured according to degree of injury of the wall-thickness measurement to the desired cannula setting regions.
It should be noted that based on the above-mentioned technical proposal, in the specific implementation process, process is as shown in figure 11, specific
In implementation process, setting regions is p region, which may include:
S111: current depth and casing wall thickness priori knowledge d are obtainedx；
S112: by the priori knowledge of current depth casing wall thickness, the emission current of each transmitting array element is calculated；
At this point, being gathered in emitted energy in interested p region by S112.And since the energy of transmitting is all poly-
Collection then can obtain relatively good transient electromagnetic inductive signal as long as receiving transducer is arranged in p region in p region.
S113: the measuring signal inverting wall-thickness measurement d detected using receiving transducerc；
Specifically, the reception induced electromotive force of receiving transducer may be expressed as: in p region
Up(t,zp, d, I) and=IT·Qp(t,zp,d)
The parameters such as the emission current by each transmitting array element, which bring above formula into, can calculate wall-thickness measurement dc。
S114: judge whether to complete effectively to focus；
Specifically, by the priori knowledge d of wall-thickness measurement and casing wall thickness hereinxCompared to pair, Wall-Thickness Difference herein is obtained
Value ds=dc-dx；Compare wall thickness difference dsWith the threshold value d of settingsy.Work as ds< dsyWhen, then it represents that wall-thickness measurement and priori Wall-Thickness Difference
Away from little, illustrate that the emission current of each transmitting array element calculated by priori wall thickness is more accurate at this time, it is effective to realize comparison
Transmitting focusing.It can use wall-thickness measurement at this time then to judge the degree of impairment of casing.If realizing effective focusing, go to
S115, can be by comparing the measurement threshold value d of wall-thickness measurement and settingszJudge casing with the presence or absence of damage.Work as ds< dszWhen, table
Show the value of wall-thickness measurement within the scope of measurement error, there is no damaging or damaging very little, this process terminates casing.Conversely, table
Showing casing, there are certain damages, can then execute S116, combine the casing damage judged at depth in history measurement process
The size of the value of condition of the injury condition and wall-thickness measurement quantifies present casing degree of injury.
Conversely, working as ds≥dsyWhen, then it represents that at this moment wall-thickness measurement and priori Wall-Thickness Difference pass through priori wall thickness gauge away from bigger
The emission current for each transmitting array element calculated is not suitable for wall thickness environment at this time, can not realize effective transmitting focusing.Then this
When go to S117: using wall-thickness measurement recalculate it is each transmitting array element emission current, and be back to S113 re-use receive
The new wall-thickness measurement of probe signal inverting, i.e., measure casing degree of impairment by re-emitting focusing.That is, if sentencing
It is disconnected to be not carried out effective transmitting focusing, then it needs to bring into wall-thickness measurement formula (10), recalculates the hair of each transmitting array element
Radio stream, and signal measurement casing damage situation is re-emitted using calculated result.It is repeated using the induced electromotive force received
S113 passes through formula Up(t,zp, d, I) and=IT·Qp(t, zp, d) and secondary wall-thickness measurement is calculated, judge focus condition, if the
The case where Secondary Emission completes effective focusing, then enters S115, judge casing damage., whereas if not completing still
Effective to focus, then repeatedly S117, recalculates emission current, and emit signal measurement casing again, until completing effectively
Transmitting focusing or until emitting times reach certain threshold value.
It should be understood that between technical solution documented by the embodiment of the present invention, in the absence of conflict, Ke Yiren
Meaning combination.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of casing damage detection device based on transient electromagnetic emission array, which is characterized in that described device includes: control
Remote short section and at least one transmitting receive pipe nipple；Wherein,
Each transmitting receives pipe nipple, and the transient electromagnetic sensor array of described device radial direction is parallel to comprising one, described
Transient electromagnetic sensor array includes a transient electromagnetic emission array and a transient electromagnetic receiving transducer, the transient electromagnetic
Emission array includes multiple transmitting array elements, and each transmitting array element is by the control command of the control remote short section using corresponding
Emission current, so that the emitted energy of the emission array focuses to setting regions in desired cannula.
2. the apparatus according to claim 1, which is characterized in that the control remote short section, including temperature measuring section, number
According to hop, control circuit part and power unit；
Wherein, the temperature measuring section is configured to implement the environment temperature that monitoring described device is presently in；
The TCP data segment is configured to emission current needed for receiving each transmitting array element sent as host computer, Yi Jisuo
State the measuring signal that receiving transducer detects；And the environment temperature for monitoring the measuring signal and the temperature measuring section
Degree information summarize after by coupled capacitor by summary information carrier wave on cable；And letter is summarized for described by the cable
Breath is sent to host computer；
The control circuit part, emission current needed for being configured to each transmitting array element sent according to the host computer is to described
Transmitting receives pipe nipple and sends control command, and the control command is used to control the transmitting and receives pipe nipple transmitting and receive signal
Interval time；
The power unit is configured to receive pipe nipple offer electric energy to the control remote short section and the transmitting.
3. the apparatus according to claim 1, which is characterized in that described device further include: head harness, for described device and
Cable connection.
4. the apparatus according to claim 1, which is characterized in that described device further include: positioned at described device both ends it is upper,
Lower centralizer, to guarantee that described device is always held at the shaft core position of wellbore in underground.
5. a kind of casing damage detection system based on transient electromagnetic emission array, which is characterized in that the system comprises: it is upper
Machine and the described in any item casing damage detection devices based on transient electromagnetic emission array of Claims 1-4；Wherein,
The host computer is connected by cable with described device, and the host computer is configured to send each transmitting battle array to described device
The required emission current of member；And the summary information that receiving transducer is sent in described device is received, the summary information includes institute
State the ambient temperature information of measuring signal and device that receiving transducer detects；And mesh is determined according to the measuring signal
Mark the faulted condition of setting regions in casing.
6. system according to claim 5, which is characterized in that the host computer is configured that
Emission current needed for determining each emission array according to the prior information of the desired cannula；Wherein, each hair
Emission current needed for penetrating array is used to the emitted energy of the emission array focusing to the setting regions；
The damage shape of the setting regions is determined according to the measuring signal that the prior information and the receiving transducer detect
State.
7. system according to claim 6, which is characterized in that the prior information of the desired cannula includes the target set
The priori wall thickness of pipe, correspondingly, the host computer is configured that
The wall-thickness measurement of the setting regions is determined according to the measuring signal that the receiving transducer detects；
Judge whether the emitted energy of the emission array gathers according to the relationship between the wall-thickness measurement and the priori wall thickness
Coke is to the setting regions；
If not focusing to the setting regions, the electricity of transmitting needed for redefining each emission array according to the wall-thickness measurement
Stream, and emission current needed for each transmitting array element redefined to described device transmission；
If focusing to the setting regions, set according to the relationship judgement between the wall-thickness measurement and the measurement threshold value of setting
Region is determined with the presence or absence of damage；
If the wall-thickness measurement is less than the measurement threshold value of the setting, it is determined that there is no damages for the setting regions；
If the wall-thickness measurement is not less than the measurement threshold value of the setting, it is determined that the setting regions, which exists, to be damaged, and according to
The wall-thickness measurement measures the degree of injury of the desired cannula setting regions.
8. a kind of casing damage detection method based on transient electromagnetic emission array, which is characterized in that the method is applied to power
Benefit requires 5 to 7 described in any item casing damage detection systems based on transient electromagnetic emission array, which comprises
Based at least one emission array to the setting regions emission current of desired cannula；Wherein, the hair of each emission array
Radio stream is used to the emitted energy of the emission array focusing to the setting regions；
Measuring signal is detected by receiving transducer；
The faulted condition of setting regions in the desired cannula is determined according to the measuring signal.
9. according to the method described in claim 8, it is characterized in that, it is described based at least one emission array to desired cannula
Setting regions emission current, comprising:
Emission current needed for determining each emission array according to the prior information of the desired cannula；Wherein, each hair
Emission current needed for penetrating array is used to the emitted energy of the emission array focusing to the setting regions；
Correspondingly, the faulted condition that setting regions in the desired cannula is determined according to the measuring signal, comprising: according to
The measuring signal that the prior information and the receiving transducer detect determines the faulted condition of the setting regions.
10. according to the method described in claim 9, it is characterized in that, described visit according to the prior information and the reception
The measuring signal that head detects determines the faulted condition of the setting regions, comprising:
The wall-thickness measurement of the setting regions is determined according to the measuring signal that the receiving transducer detects；
Judge whether the emitted energy of the emission array gathers according to the relationship between the wall-thickness measurement and the priori wall thickness
Coke is to the setting regions；
If not focusing to the setting regions, the electricity of transmitting needed for redefining each emission array according to the wall-thickness measurement
Stream, and emission current needed for each transmitting array element redefined to described device transmission；
If focusing to the setting regions, set according to the relationship judgement between the wall-thickness measurement and the measurement threshold value of setting
Region is determined with the presence or absence of damage；
If the wall-thickness measurement is less than the measurement threshold value of the setting, it is determined that there is no damages for the setting regions；
If the wall-thickness measurement is not less than the measurement threshold value of the setting, it is determined that the setting regions, which exists, to be damaged, and according to
The wall-thickness measurement measures the degree of injury of the desired cannula setting regions.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608662A (en) * | 2012-03-23 | 2012-07-25 | 刘冀成 | Detection device based on transient electromagnetic method (TEM) |
| US20120215448A1 (en) * | 2011-02-17 | 2012-08-23 | Hu Wenbao | Method for detecting formation resistivity outside of metal casing using time-domain electromagnetic pulse in well |
| CN106596715A (en) * | 2017-01-20 | 2017-04-26 | 西安石油大学 | Array type transient electromagnetic method multi-layer pipe column damage detection system and array type transient electromagnetic method multi-layer pipe column damage detection method |
| CN109507736A (en) * | 2018-12-12 | 2019-03-22 | 吉林大学 | A kind of novel array transient electromagnetic detecting system and detection method |
| CN210572115U (en) * | 2019-09-09 | 2020-05-19 | 西安石油大学 | Casing damage detection device and system based on transient electromagnetic emission array |
-
2019
- 2019-09-09 CN CN201910852476.0A patent/CN110487891A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120215448A1 (en) * | 2011-02-17 | 2012-08-23 | Hu Wenbao | Method for detecting formation resistivity outside of metal casing using time-domain electromagnetic pulse in well |
| CN102608662A (en) * | 2012-03-23 | 2012-07-25 | 刘冀成 | Detection device based on transient electromagnetic method (TEM) |
| CN106596715A (en) * | 2017-01-20 | 2017-04-26 | 西安石油大学 | Array type transient electromagnetic method multi-layer pipe column damage detection system and array type transient electromagnetic method multi-layer pipe column damage detection method |
| CN109507736A (en) * | 2018-12-12 | 2019-03-22 | 吉林大学 | A kind of novel array transient electromagnetic detecting system and detection method |
| CN210572115U (en) * | 2019-09-09 | 2020-05-19 | 西安石油大学 | Casing damage detection device and system based on transient electromagnetic emission array |
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