CN105607137B - A kind of relief well connects detection system and detection method with accident well - Google Patents
A kind of relief well connects detection system and detection method with accident well Download PDFInfo
- Publication number
- CN105607137B CN105607137B CN201610032886.7A CN201610032886A CN105607137B CN 105607137 B CN105607137 B CN 105607137B CN 201610032886 A CN201610032886 A CN 201610032886A CN 105607137 B CN105607137 B CN 105607137B
- Authority
- CN
- China
- Prior art keywords
- signal
- probes
- induced signal
- well
- magnetic core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
- G01V3/26—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The present invention relates to a kind of relief well detection system and detection method are connected with accident well, it pops one's head in including a three-component magnetic core, three-component magnetic core probe includes orthogonal Z probes, X probes and Y probes two-by-two, and Z probes, X probes and Y probes include a transmitting coil and a receiving coil；Transmitter unit is used to launch transient excitation signal, Z pops one's head in, X is popped one's head in and the transmitting coil of Y probes receives transient excitation signal simultaneously and transient excitation signal is diffused into generation Z-direction induced signal in accident well by relief well, X is to induced signal and Y-direction induced signal, Z pops one's head in, X pops one's head in and the receiving coil of Y probes corresponds to receive Z-direction induced signal respectively, X is to induced signal and Y-direction induced signal, and by the Z-direction induced signal of reception, X passes sequentially through receiving unit to induced signal and Y-direction induced signal and collection transmission unit is transferred to surface units, surface units are according to Z-direction induced signal, X calculates distance and bearing that accident well pops one's head in three-component magnetic core to induced signal and Y-direction induced signal and shown.
Description
Technical field
The present invention relates to oil exploitation field of security guarantee, connects detection system with accident well more particularly to a kind of relief well
System and detection method.
Background technology
In drillng operation, once blowout out of control occurs, it can not only make petroleum resources by heavy damage, but also easily make
Into fire, cause casualties, equipment is damaged, Oil/gas Well is scrapped and the serious accident such as environmental pollution.Wherein, gas blowout accident occurs
Oil well be referred to as accident well, the directional well designed and constructed for control accident well of speedily carrying out rescue work is referred to as relief well.Usual relief well and thing
Gu Jing has certain distance, when actually rescuing, first has to distance and bearing of the detection accident well relative to relief well, then causes
Accident well is connected with relief well, and high density well control fluids are finally injected from relief well to accident well to control accident well.Obviously
Ground, detection accident well is relative to one of primary technology that the distance and bearing of relief well is implementation rescue.
At present, detect accident well mainly has a two methods relative to the distance and bearing of relief well, and 1) pass through emission electrode
Launch highpowerpulse field signal of electric current into stratum, a field signal and accident casing are received by fluxgate sensor
Secondary field signal caused by upper, and be uploaded to the calculating of ground receiver unit, accident well Detection location is realized with this.Though this method
The Detection location to accident well can be so realized to a certain extent, but the large power supply in this method is relatively difficult to achieve, one
Secondary field excitation signal is not readily available, and the primary field that receives of fluxgate sensor and secondary field signal frequency component are endless
It is whole, it can not especially receive the high fdrequency component in secondary field；In addition, fluxgate is vulnerable to ground when receiving remote small-signal
The influence of magnetic signal and noise signal, Detection location result precision, resolution ratio is caused to reduce.2) utilize and be arranged in ground and rescue
Three electrode systems in well inject Low-frequency alternating currents into stratum, utilize the low frequency converged on underground probe detection accident casing
Magnetic field caused by alternating current, so as to realize that the azimuth-range of relief well and accident well determines.Although this method also can be
Realize the Detection location to accident well to a certain extent, but required setting of casing in the relief well of this method, and electrode system is with rescuing
Help casing to must reach over to well inject Low-frequency alternating currents into stratum, condition needed for realization is more complicated, and accident well
The Low-frequency alternating currents converged on sleeve pipe are very faint, it is more difficult to detect.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide one kind to carry out accurate Detection location to remote accident well
Relief well connect detection system and detection method with accident well.
To realize above-mentioned technical purpose, the present invention takes following technical scheme：A kind of relief well connects detection with accident well
System, it includes three-component magnetic core probe, a transmitter unit, a receiving unit, a collection transmission unit and a surface units；
The three-component magnetic core probe, transmitter unit, receiving unit and collection transmission unit are arranged at three-component described in relief well
Magnetic core probe includes orthogonal Z probes, X probes and Y probes two-by-two, and the Z probes, X probes and Y probes include a hair
Ray circle and a receiving coil；The transmitter unit is used to launch transient excitation signal, what the Z probes, X probes and Y popped one's head in
Transmitting coil receives transient excitation signal simultaneously and is diffused into transient excitation signal in the accident well by the relief well
Produce Z-direction induced signal, X distinguishes to induced signal and Y-direction induced signal, the receiving coil of the Z probes, X probes and Y probes
The corresponding Z-direction induced signal, the X of receiving is to induced signal and Y-direction induced signal, and by the Z-direction induced signal, the X of reception
The receiving unit is passed sequentially through to induced signal and Y-direction induced signal and collection transmission unit is transferred to the surface units,
The surface units according to the Z-direction induced signal, X to induced signal and Y-direction induced signal calculate the accident well with it is described
The distance and bearing of three-component magnetic core probe is simultaneously shown.
The receiving coil and transmitting coil of the Z probes, X probes and Y probes are uniformly wound on a magnetic core respectively, described
Z probes, the receiving coil of X probes and Y probes and transmitting coil are made by Copper fabrication.
The transmitter unit includes main control chip, drive circuit and output circuit；The main control chip produces bipolarity side
Ripple signal, and the transient excitation signal in bipolar square wave signal is transferred to the drive circuit, the drive circuit receives
And popped one's head in being transferred to the three-component magnetic core by the output circuit after transient excitation signal progress power amplification.
The receiving unit includes pre-amplification circuit, filter circuit, variable-gain amplification circuit；The preposition amplification electricity
The three-component magnetic core is popped one's head in after the induced signal transmitted is amplified and be transferred to the filter circuit, the filter circuit in road
Induced signal after amplification is filtered, remove noise after be transferred to the variable-gain amplification circuit, the variable gain
Amplifying circuit is amplified multiple adjustment according to the amplitude difference of early stage, mid-term and late period induced signal, and according to being adjusted
Multiplication factor is transferred to the collection transmission unit after amplifying again to the induced signal that it is received.
The collection transmission unit includes A/D change-over circuits, main control chip and pulse-couple transformer；The A/D conversions
The induced signal that the receiving unit transmits is converted into being transferred to the main control chip after data signal by circuit, the master control core
Piece receives and the data signal to being converted into carries out coded treatment, and the data signal after encoded processing passes through the pulse coupling
Close transformer and be transferred to the surface units.
The surface units include decoding subunit, data transfer subelement and host computer；The decoding subunit includes
Coupling transformer, filter circuit, compare output circuit and main control chip；The coupling transformer receives the collection transmission unit
The signal of transmission, and the useful signal in its reception signal is isolated, and the useful signal is transferred to the filter circuit, institute
Filter circuit is stated to receive and be filtered the signal that it is received processing, be transferred to the relatively output circuit after suppression noise,
The signal that output circuit is received and received described relatively passes through after being converted into the recognizable data signal of the main control chip
The data transfer subelement is transferred to the host computer, the host computer according to the signal of change that it is received accident well with
The distance and bearing of the three-component magnetic core probe, and the distance and bearing information is shown.
The detection system also includes a depth measurement unit, and the depth measurement unit includes a cable, a photoelectric encoder and one
Main control chip；The cable winding is arranged on code-disc, and described cable one end connects the collection transmission unit, and the cable is another
One end connects the surface units, and the photoelectric encoder records the pulse number of the code-disc rotation during cable operation,
And the pulse number is transferred to the main control chip of the depth measurement unit, the main control chip of the depth measurement unit receives and to it
The pulse number received is counted, and gives pulse number statistical result real-time Transmission to the surface units, describedly
Face unit calculates position of the three-component magnetic core probe in the relief well according to pulse number statistical result.
The detection system also includes a power supply unit, said supply unit include multiwinding transformer, rectification subelement,
Underground power supply used subelement and surface power supply subelement；The rectification subelement includes the first rectification module, the second rectification module, the
Three rectification modules and the 4th rectification module；The input connection 220V alternating currents of the multiwinding transformer, and by the 220V
Alternating current decompression exports to the rectification subelement respectively after changing into 130V alternating currents, ± 20V alternating currents and 10V alternating currents；
First rectification module receives 130V alternating currents and is transferred to the underground power supply used son list after converting thereof into 170V direct currents
Member, the 170V direct currents of reception are converted into 3.3V, ± 12V and 5V direct currents by the underground power supply used subelement, and are used for for institute
State transmitter unit, receiving unit and collection transmission unit power supply；Second rectification module, the 3rd rectification module and the 4th rectification
Module receives ± 20V alternating currents and 10V alternating currents respectively, and is transferred to after being converted into ± 20V direct currents and 10V direct currents respectively
The surface power supply subelement, ± 20V the direct currents of reception and 10V direct currents be converted into by the surface power supply subelement ±
15V direct currents and 5V direct currents, and for the decoding subunit and data transmission for the depth measurement unit and surface units
Unit is powered.
A kind of relief well connects the detection method of detection system with accident well, it is characterised in that including herein below：(1) will
Three-component magnetic core probe is transferred in relief well, and ensures the Z probes of three-component magnetic core probe and the diameter parallel of relief well；
(2) three-component magnetic core probe Z probes, X probes and Y probes during decentralization sends transient excitation signal respectively, and respectively
Corresponding Z-direction induced signal, the X of receiving is to induced signal and Y-direction induced signal, and by Z-direction induced signal, X to induced signal and Y-direction
Induced signal is transferred to surface units respectively；(3) three-component magnetic core probe depth measurement unit during decentralization records electricity in real time
Pulse number when cable is run, and pulse number is transferred to surface units；(4) surface units receive pulse number data, and
Position of the three-component magnetic core probe in relief well is calculated according to pulse number data；(5) surface units receive Z-direction sensing letter
Number, X counts respectively to induced signal and Y-direction induced signal, and according to Z-direction induced signal, X to induced signal and Y-direction induced signal
The sleeve pipe for calculating accident well is popped one's head in relative to Z, the Z-direction relative distance of X probes and Y probes, X are to relative distance Y-direction relative distance；
(6) according to Z-direction relative distance, X to relative distance and Y-direction relative distance, the well that calculates that accidents happened and three-component magnetic core probe away from
From and orientation.
The step (6) according to Z-direction relative distance, X to relative distance and Y-direction relative distance, the well and three that calculates that accidents happened
The distance and bearing of component magnetic core probe, specifically includes herein below：6-1) when relief well is not parallel relative to accident well, energy
Z-direction relative distance, X are enough obtained to relative distance and Y-direction relative distance, Z-direction relative distance, X is relative to relative distance and Y-direction
Range conversion is to the distance and bearing that accident well and three-component magnetic core probe under three-dimensional system of coordinate, is calculated；6-2) work as rescue
During parallel relative to the accident well well of well, Z-direction relative distance and X can be obtained to relative distance or Y-direction relative distance, by Z-direction phase
Adjust the distance and transformed to X to relative distance or Y-direction relative distance under two-dimensional coordinate system, accident well and three-component magnetic core is calculated
The distance and bearing of probe.
For the present invention due to taking above technical scheme, it has advantages below：1st, the present invention, which is set, includes Z perpendicular to each other
Probe, X pop one's head in and the three-component magnetic core probe of Y probes, three not only feasibility height, and can be to long distance that cooperate of popping one's head in
Accurate Detection location is carried out from accident well.2nd, structure of the present invention due to specifically setting Z probes, X probes and Y probes, thus it is right
Small-signal is more sensitive, and then more accurately remote accident well can be positioned.3rd, the present invention surveys due to setting
Deep unit, therefore position of the three-component magnetic core probe in relief well can be understood in real time.4th, the present invention is due to setting power supply single
Member, therefore stable power supply can be provided for the detection system.5th, the present invention is due to using transient electromagnetic method, detection range
Far, influence of the excitation field to reception signal can be effectively avoided, improves the signal to noise ratio of reception signal.6th, all dresses of the present invention
Put, circuit small volume, be convenient for carrying after combination, it is not necessary to full-blown equipment, strong applicability.The present invention it is simple in construction,
Easy to use, Detection location accurately can be widely applied to oil exploitation safeguard technology field.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the connection diagram of the present invention；
Fig. 3 is the three-component magnetic core probe spatial distribution schematic diagram of the present invention；
Fig. 4 is the inductive loop schematic diagram of the present invention；
Fig. 5 is the power supply unit schematic diagram of the present invention.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Transient electromagnetic method is also referred to as TDEM (Time-domain electromagnetic methods, abbreviation
TEM), it is that one kind launches pulsatile once magnetic field using earth-free loop line or ground connection line source to underground, in pulsatile once magnetic field interval
Period, the method that secondary turbulence field is observed using coil, magnetic probe or grounding electrode.Briefly, transient electromagnetic method is basic
Principle is exactly the law of electromagnetic induction.The process that induced-current is decayed with the time is generally divided into early, neutralization late period, wherein, early stage electricity
Magnetic field is equivalent to the radio-frequency component in frequency domain, and decay is fast, and skin depth is small；Late period electromagnetic field is equivalent to the low frequency in frequency domain
Composition, decay is slow, and skin depth is big.Rule is changed over time by survey calculation power supply intermittent phase each period secondary field
(attenuation curve), it may infer that the electrical property difference and spatial distribution form of subsurface anomaly geologic body.The present invention is with transient electromagnetic method
Based on, the distance and bearing using three-component magnetic core probe detection accident well relative to relief well.
As shown in Figures 1 to 3, relief well of the invention connected with accident well detection system include a three-component magnetic core probe 1,
One transmitter unit 2, a receiving unit 3, the one collection surface units 5 of transmission unit 4 and one；Three-component magnetic core probe 1, transmitter unit
2nd, receiving unit 3 and collection transmission unit 4 are arranged in relief well 6；Three-component magnetic core probe 1 includes Z perpendicular to each other and visited
First 11,12 and Y of X probes, 13, Z of probe probes 11, X 12 and Y of probe probes 13 include a transmitting coil and a receiving coil；Z
Probe 11, the transmitting coil of X 12 and Y of probe probes 13 receive and launch the transient excitation signal of the transmission of transmitter unit 2, and transition swashs
To encourage signal and generation primary field is encouraged in stratum media, a field excitation stratum media produces the inductive loop to decay with the time,
Inductive loop in stratum media respectively with Z probes 11, X pop one's head in 12 and Y probes 13 be axis to external diffusion, and inductive loop expands
When being scattered at the sleeve pipe 62 of accident well 61, Z probes 11, the receiving coil of X 12 and Y of probe probes 13 correspond to receive Z-direction respectively
Induced signal, X respectively believe Z-direction induced signal, X to induced signal and Y-direction sensing to induced signal and Y-direction induced signal
Number pass sequentially through receiving unit 3, collection transmission unit 4 is transferred to surface units 5, the Z-direction sense that surface units 5 receive according to it
Induction signal, X calculate the distance and bearing of accident well 61 and three-component magnetic core probe 1 to induced signal and Y-direction induced signal, and
Distance and bearing information is shown.
In a preferred embodiment, in order to more sensitive to small-signal, and then can be more accurately right
Remote accident well 61 is positioned, and Z probes 11, the receiving coil of X 12 and Y of probe probes 13 and transmitting coil are by Copper fabrication
It is made, and Z probes 11, the receiving coil of X 12 and Y of probe probes 13 and transmitting coil are uniformly wound on a magnetic core respectively.
In a preferred embodiment, transmitter unit 2 includes main control chip, drive circuit and output circuit；Master control core
Piece produces bipolar square wave signal, and the transient excitation signal in bipolar square wave signal is transferred into drive circuit, driving electricity
Road receives and to being transferred to three-component magnetic core probe 1 by output circuit after the progress power amplification of transient excitation signal.
In a preferred embodiment, receiving unit 3 includes pre-amplification circuit, filter circuit, variable gain amplification
Circuit；Pre-amplification circuit is transferred to filter circuit after being amplified to the induced signal of the transmission of three-component magnetic core probe 1, filters
Circuit is filtered to the induced signal after amplification, remove noise after be transferred to variable-gain amplification circuit, variable gain amplification
Circuit is amplified multiple adjustment according to the amplitude difference of early stage, mid-term and late period induced signal, and according to the amplification adjusted
Multiple is transferred to collection transmission unit 4 after amplifying again to the induced signal that it is received.
In a preferred embodiment, collection transmission unit 4 includes A/D change-over circuits, main control chip and pulse-couple
Transformer；The induced signal that receiving unit 3 transmits is converted into being transferred to main control chip after data signal by A/D change-over circuits, main
Control chip reception and the data signal to being converted into carries out coded treatment, the data signal after encoded processing passes through pulse coupling
Close transformer and be transferred to surface units 5.
In a preferred embodiment, surface units 5 include decoding subunit, data transfer subelement and host computer；
Decoding subunit includes coupling transformer, filter circuit, compares output circuit and main control chip；Coupling transformer receives collection and passed
The signal that defeated unit 4 transmits, and the useful signal in its reception signal is isolated, and the useful signal is transferred to filtered electrical
Road, filter circuit receives and processing is filtered to the signal that it is received, is transferred to after suppression noise and compares output circuit, compares
The signal that output circuit is received and received is converted into after the recognizable data signal of main control chip by data transmission list
Member is transferred to host computer, and host computer is according to distance of the signal of change accident well 61 that it is received with three-component magnetic core probe 1 and side
Position, and distance and bearing information is shown.
In a preferred embodiment, should in order to understand 1 position in relief well 6 of three-component magnetic core probe
Detection system also includes a depth measurement unit 7, and depth measurement unit 7 includes a cable 71, a photoelectric encoder and a main control chip；Cable
71 windings are arranged on code-disc, one end connection collection transmission unit 4 of cable 71, the other end connection surface units 5 of cable 71,
The pulse number that code-disc rotates when photoelectric encoder record cable 71 is run, and pulse number is transferred to main control chip, master control
Chip receives simultaneously to be counted to the pulse number that it is received, and by pulse number statistical result real-time Transmission to surface units 5,
Surface units 5 calculate 1 position in relief well 6 of three-component magnetic core probe according to pulse number statistical result.
In a preferred embodiment, as shown in Figures 4 and 5, in order to provide stable power supply for the detection system,
The detection system also includes a power supply unit 8, and power supply unit 8 includes multiwinding transformer 81, rectification subelement 82, underground power supply used
Subelement 83 and surface power supply subelement 84；Rectification subelement 82 includes the first rectification module 821, the second rectification module 822, the
Three rectification modules 823 and the 4th rectification module 824；Underground power supply used subelement 83 includes the first Voltage stabilizing module 831, the second voltage stabilizing mould
Block 832, the 3rd Voltage stabilizing module 833 and the 4th Voltage stabilizing module 834；Surface power supply subelement 84 includes the 5th Voltage stabilizing module 841, the
Six Voltage stabilizing modules 842 and the 7th Voltage stabilizing module 843；
The input connection 220V alternating currents of multiwinding transformer 81, and the decompression of 220V alternating currents is changed into 130V exchanges
Exported respectively to rectification subelement 82 after electricity, ± 20V alternating currents and 10V alternating currents；
First rectification module 821 of rectification subelement 82 receives 130V alternating currents and passed after converting thereof into 170V direct currents
It is defeated by underground power supply used subelement 83, the first Voltage stabilizing module 831, the second Voltage stabilizing module the 832, the 3rd in underground power supply used subelement 83
The 170V direct currents that the Voltage stabilizing module 834 of Voltage stabilizing module 833 and the 4th is received and received respectively respectively be converted into 3.3V, ±
12V and 5V direct currents, and for being powered for transmitter unit 2, receiving unit 3 and collection transmission unit 4；
The second rectification module 822, the 3rd rectification module 823 and the 4th rectification module 824 of rectification subelement 82 connect respectively
Receipts ± 20V alternating currents and 10V alternating currents, and it is transferred to surface power supply after being converted into ± 20V direct currents and 10V direct currents respectively
Unit 84, the 5th Voltage stabilizing module 841, the 6th Voltage stabilizing module 842 and the 7th Voltage stabilizing module 843 in surface power supply subelement 84 divide
Do not receive and be converted into ± 15V direct currents and 5V direct currents respectively, and for the solution numeral for depth measurement unit 7 and surface units 5
Unit and the power supply of data transfer subelement.
Detection system is connected with accident well based on relief well, relief well of the invention connects detection method with accident well to be included
Herein below：
1st, three-component magnetic core probe 1 is transferred in relief well 6, and ensures the Z probes 11 of three-component magnetic core probe 1 and rescue
Help the diameter parallel of well 6；
2nd, three-component magnetic core probe 1 Z probes 11, X during decentralization pops one's head in, and transmission transition swashs 12 and Y probes 13 respectively
Encourage signal, and correspond to receive Z-direction induced signal, X to induced signal and Y-direction induced signal respectively, and by Z-direction induced signal, X to
Induced signal and Y-direction induced signal are transferred to surface units 5 respectively；
3rd, three-component magnetic core probe 1 records the pulse when cable 71 is run in real time in depth measurement unit 7 during decentralization
Number, and pulse number is transferred to surface units 5；
4th, surface units 5 receive pulse number data, and calculate three-component magnetic core probe 1 according to pulse number data and exist
Position in relief well 6；
5th, surface units 5 receive Z-direction induced signal, X to induced signal and Y-direction induced signal, and are sensed according to Z-direction and believed
Number, X pops one's head in 12 and Y to the sleeve pipe 62 of induced signal and Y-direction the induced signal well 61 that calculates that accidents happened respectively relative to Z probes 11, X
The relative distance of probe 13, it is respectively defined as the ease of description：Z-direction relative distance, X to relative distance Y-direction relative distance, its
In, Z-direction relative distance, X are identical to the calculating process of relative distance Y-direction relative distance, and the present embodiment is with Z-direction relative distance
Calculating process exemplified by illustrate, specifically include herein below：
Because the sleeve pipe 62 and stratum media electrical conductivity difference of accident well 61 are huge, regard stratum as uniform dielectric；According to
Theory of Electromagnetic Field obtains the Faraday's electromagnetic induction law and circuital law of frequency domain, wherein Faraday's electromagnetic induction law
For：
In formula,Represent electric field intensity E curl；μ represents the magnetic conductivity of stratum media；ω represents angle
Frequency；H represents the magnetic intensity vector in stratum media；J represents that transmitting coil regards magnetic density equivalent during magnetic dipole as；
Circuital law is：
In formula,Represent magnetic intensity vector H curl；σ represents the electrical conductivity of stratum media；ε is represented
The dielectric constant of stratum media, and ε value tends to 0；ω represents angular frequency；E represents the electric field intensity in stratum media；
Introduce vector potential F, it is assumed that there are equation below：
In formula, E represents the electric field intensity in stratum media；Represent vector potential F curl；
Formula (3) is substituted into formula (1) and formula (2), and formula (1) and formula (2) abbreviation are merged to obtain the nonhomogeneous last of the twelve Earthly Branches on F
Mu Huozi equations：
In formula,Represent vector potential F divergence；F represents the vector potential introduced；J represents that transmitting coil regards magnetic couple as
The equivalent magnetic density of the pole period of the day from 11 p.m. to 1 a.m；K represents the wave number of stratum media；
Wherein, on k2Solution formula it is as follows：
k2=-i ω μ σ
In formula, k represents the wave number of medium；ω represents angular frequency；μ represents the magnetic conductivity of stratum media；σ is represented
The electrical conductivity of stratum media；
Solution formula on J is as follows：
J=i ω μM n
In formula, J represents magnetic density when transmitting coil regards magnetic dipole as；ω represents angular frequency；μ is represented
The magnetic conductivity of stratum media；M represents the magnetic moment of transmitting coil；N represents unit vector, points to the axis direction of Z probes 11；
Wherein, the solution formula on M is as follows：
M=NtIS
In formula, NtRepresent the transmitting coil number of turn；I represents emission current；S represents the area of transmitting coil；
Equation below is obtained according to formula (1), (2) and (3)：
In formula, HZRepresent the component of Z 11 axis directions of probe of the magnetic intensity vector H in stratum media；μ
Represent the magnetic conductivity of stratum media；ω represents angular frequency；K represents the wave number of medium；FZRepresent vector potential F Z 11 axles of probe
The component in line direction；Represent FZOn the second-order partial differential coefficient apart from variable z on Z 11 axis directions of probe；
Wherein, on FZSolution formula it is as follows：
In formula, FZRepresent the component of vector potential F Z 11 axis directions of probe；ω represents angular frequency；μ is represented
The magnetic conductivity of stratum media；M represents the magnetic moment of transmitting coil；K0() represents 0 rank the second class modified Bessel function；X represents to draw
Enter variable；R represents the radius of inductive loop；λ represents variables separation；Z represents the distance between receiving coil and transmitting coil；
In formula, the solution formula on λ is as follows：
λ2=kx 2+ky 2
In formula, λ represents variables separation；kxRepresent wave number of the medium in X 12 axis directions of probe；kyRepresent that medium is popped one's head in Y
The wave number of 13 axis directions；
In formula, the solution formula on x is as follows：
x2=λ2-k2
In formula, x represents to introduce variable；λ represents variables separation；K represents the wave number of stratum media；
It is by the calculation formula that formula (6) substitutes into formula (5) and is arranged to obtain the induced field that Z probes 11 receive：
In formula, HZRepresent the component of Z 11 axis directions of probe of the magnetic intensity vector H in stratum media；M represents transmitting
The magnetic moment of coil；K0() represents 0 rank the second class modified Bessel function；X represents to introduce variable；R represents the radius of inductive loop；
λ represents variables separation；Z represents the distance between receiving coil and transmitting coil；
Can obtain the calculation formula of caused frequency domain induced electromotive force on Z probes 11 by formula (7) is：
In formula, V represents caused frequency domain induced electromotive force on Z probes 11；ω represents angular frequency；μ represents ground
Layer magnetic conductivity；μrRepresent the Effective permeability of magnetic core；M represents the magnetic moment of transmitting coil；NRRepresent the receiving coil number of turn；SRRepresent
The area of receiving coil；X represents to introduce variable；K0() represents 0 rank the second class modified Bessel function；R represents inductive loop
Radius；λ represents variables separation；Z represents the distance between receiving coil and transmitting coil；
Formula (8) is carried out into frequency-region signal using Gaver-stehfest inverse laplace transforms method to time-domain signal to turn
Change, then the calculation formula for the time domain induced electromotive force that Z probes 11 receive is：
In formula, V (t) represents the time domain induced electromotive force that Z probes 11 receive；μ represents stratum magnetic conductivity；μrRepresent magnetic core
Effective permeability；M represents the magnetic moment of transmitting coil；NRRepresent the receiving coil number of turn；SRRepresent the area of receiving coil；T is represented
Time；KnRepresent conversion coefficient；X represents to introduce variable；K0() represents 0 rank the second class modified Bessel function；R represents sensing whirlpool
The radius of stream；λ represents variables separation；Z represents the distance between receiving coil and transmitting coil；
Value by gradually bringing r into approaches the value of the induced electromotive force measured, obtains immediate r value, i.e. accident
The relative distance that the sleeve pipe 62 of well 61 is popped one's head in relative to Z；
6th, according to Z-direction relative distance, X to relative distance and Y-direction relative distance, calculate that accidents happened well 61 and three-component magnetic core
The distance and bearing of probe 1, specifically includes herein below：
1) when relief well 6 is not parallel relative to accident well 61, Z-direction relative distance, X can be obtained to relative distance and Y
To relative distance, Z-direction relative distance, X are transformed under three-dimensional system of coordinate to relative distance and Y-direction relative distance, are calculated
The distance and bearing of accident well 61 and three-component magnetic core probe 1；
2) when relief well 6 is relative to accident 61 parallel well of well, Z-direction relative distance and X can be obtained to relative distance or Y
To relative distance, Z-direction relative distance and X are transformed under two-dimensional coordinate system to relative distance or Y-direction relative distance, are calculated
The distance and bearing of accident well 61 and three-component magnetic core probe 1.
Above-described embodiment is merely to illustrate the present invention, wherein the structure of each part, connected mode and manufacture craft etc. are all
It can be varied from, every equivalents carried out on the basis of technical solution of the present invention and improvement, should not exclude
Outside protection scope of the present invention.
Claims (8)
1. a kind of relief well connects detection system with accident well, it is characterised in that：It includes three-component magnetic core probe, a transmitting
Unit, a receiving unit, a collection transmission unit and a surface units；The three-component magnetic core probe, transmitter unit, receive list
Member and collection transmission unit are arranged in relief well, and the three-component magnetic core probe includes orthogonal Z probes, X two-by-two
Probe and Y probes, the Z probes, X probes and Y probes include a transmitting coil and a receiving coil；
The transmitter unit is used to launch transient excitation signal, and the transmitting coil of the Z probes, X probes and Y probes receives transition
Transient excitation signal simultaneously and is diffused into the accident well and produces Z-direction induced signal, X by pumping signal by the relief well
To induced signal and Y-direction induced signal, the receiving coil of the Z probes, X probes and Y probes corresponds to respectively receives the Z-direction sense
Induction signal, X are to induced signal and Y-direction induced signal, and by the Z-direction induced signal of reception, X to induced signal and Y-direction sense
Induction signal passes sequentially through the receiving unit and collection transmission unit is transferred to the surface units, and the surface units are according to institute
State Z-direction induced signal, X to induced signal and Y-direction induced signal calculate the accident well and three-component magnetic core probe away from
From with orientation and shown.
2. a kind of relief well as claimed in claim 1 connects detection system with accident well, it is characterised in that：The Z probes, X are visited
The receiving coil and transmitting coil of head and Y probes are uniformly wound on a magnetic core respectively, Z probe, X probes and Y probes
Receiving coil and transmitting coil are made by Copper fabrication.
3. a kind of relief well as claimed in claim 1 connects detection system with accident well, it is characterised in that：The transmitter unit bag
Include main control chip, drive circuit and output circuit；The main control chip produces bipolar square wave signal, and bipolar square wave is believed
Transient excitation signal in number is transferred to the drive circuit, and the drive circuit receives and the transient excitation signal is carried out
The three-component magnetic core is transferred to after power amplification by the output circuit to pop one's head in.
4. a kind of relief well as claimed in claim 1 connects detection system with accident well, it is characterised in that：The receiving unit bag
Include pre-amplification circuit, filter circuit, variable-gain amplification circuit；The pre-amplification circuit is popped one's head in the three-component magnetic core
The induced signal of transmission is transferred to the filter circuit after being amplified, the filter circuit is carried out to the induced signal after amplification
Filtering, be transferred to the variable-gain amplification circuit after removing noise, the variable-gain amplification circuit according to early stage, mid-term and
The amplitude difference of late period induced signal is amplified multiple adjustment, and the sensing received according to the multiplication factor adjusted to it is believed
The collection transmission unit is transferred to after number amplifying again.
5. a kind of relief well as claimed in claim 1 connects detection system with accident well, it is characterised in that：The collection transmission is single
Member includes A/D change-over circuits, main control chip and pulse-couple transformer；The A/D change-over circuits transmit the receiving unit
Induced signal be converted into being transferred to the main control chip after data signal, the main control chip receives and the numeral to being converted into
Signal carries out coded treatment, and the data signal after encoded processing is transferred to the ground by the pulse-couple transformer
Unit.
6. a kind of relief well as claimed in claim 1 connects detection system with accident well, it is characterised in that：The surface units bag
Include decoding subunit, data transfer subelement and host computer；The decoding subunit includes coupling transformer, filter circuit, ratio
Compared with output circuit and main control chip；The coupling transformer receives the signal of the collection transmission unit transmission, and isolates it
Useful signal in reception signal, and the useful signal is transferred to the filter circuit, the filter circuit receives and to it
The signal of reception is transferred to the relatively output circuit after being filtered processing, suppression noise, and the relatively output circuit receives
And the signal received is converted into after the recognizable data signal of the main control chip by data transfer subelement biography
It is defeated by the host computer, the host computer accident well and three-component magnetic core probe according to the signal of change that it is received
Distance and bearing, and the distance and bearing information is shown.
7. a kind of relief well as claimed in claim 1 connects detection system with accident well, it is characterised in that：The detection system is also
Including a depth measurement unit, the depth measurement unit includes a cable, a photoelectric encoder and a main control chip；The cable winding is set
Put on code-disc, described cable one end connects the collection transmission unit, and the cable other end connects the surface units, institute
The pulse number that the code-disc rotates when photoelectric encoder records the cable operation is stated, and the pulse number is transferred to institute
The main control chip of depth measurement unit is stated, the pulse number that the main control chip of the depth measurement unit is received and received to it is united
Meter, and give pulse number statistical result real-time Transmission to the surface units, the surface units are counted according to pulse number and tied
Fruit calculates position of the three-component magnetic core probe in the relief well.
8. a kind of relief well a kind of as described in claim 1~7 any one connects the detection method of detection system with accident well,
It is characterized in that including herein below：
(1) three-component magnetic core probe is transferred in relief well, and ensures the Z probes of three-component magnetic core probe and the axle of relief well
Line is parallel；
(2) three-component magnetic core probe Z probes, X probes and Y probes during decentralization sends transient excitation signal respectively, and
Correspond to respectively and receive Z-direction induced signal, X to induced signal and Y-direction induced signal, and by Z-direction induced signal, X to induced signal
Surface units are transferred to respectively with Y-direction induced signal；
(3) pulse number of the three-component magnetic core probe when depth measurement unit during decentralization records cable operation in real time, and will
Pulse number is transferred to surface units；
(4) surface units receive pulse number data, and calculate three-component magnetic core probe according to pulse number data and rescuing
Position in well；
(5) surface units receive Z-direction induced signal, X to induced signal and Y-direction induced signal, and according to Z-direction induced signal, X to
The sleeve pipe of induced signal and Y-direction induced signal calculate that accidents happened respectively well is popped one's head in relative to Z, X probes are relative with the Z-direction of Y probes
Distance, X are to relative distance Y-direction relative distance；
(6) according to Z-direction relative distance, X to relative distance and Y-direction relative distance, calculating that accidents happened, well is popped one's head in three-component magnetic core
Distance and bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032886.7A CN105607137B (en) | 2016-01-19 | 2016-01-19 | A kind of relief well connects detection system and detection method with accident well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032886.7A CN105607137B (en) | 2016-01-19 | 2016-01-19 | A kind of relief well connects detection system and detection method with accident well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105607137A CN105607137A (en) | 2016-05-25 |
| CN105607137B true CN105607137B (en) | 2017-12-15 |
Family
ID=55987212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610032886.7A Active CN105607137B (en) | 2016-01-19 | 2016-01-19 | A kind of relief well connects detection system and detection method with accident well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105607137B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121637B (en) * | 2016-06-07 | 2019-01-22 | 西安石油大学 | A kind of system and method for detecting accident well |
| CN109814157B (en) * | 2019-01-31 | 2020-09-01 | 西安石油大学 | Method and device for identifying relative gesture and computer storage medium |
| CN111502631B (en) * | 2020-04-24 | 2023-12-22 | 中国海洋石油集团有限公司 | Method and system for determining relative distance between rescue well and accident well and suppressing noise |
| CN111734389B (en) * | 2020-07-29 | 2023-03-28 | 中国海洋石油集团有限公司 | Transient electromagnetic rescue well detection method and system based on combined eccentric probe |
| CN112083507B (en) * | 2020-09-07 | 2023-09-05 | 中国海洋石油集团有限公司 | Transient electromagnetic rescue well detection method based on empirical mode decomposition |
| CN112922584B (en) * | 2021-01-21 | 2022-12-09 | 中海油田服务股份有限公司 | Adjacent well detection device, method and system |
| CN113236224B (en) * | 2021-06-11 | 2024-09-13 | 徐梓辰 | High-curvature branch well position control device |
| CN114966872B (en) * | 2022-05-09 | 2023-04-18 | 中国石油天然气集团有限公司 | Rescue well magnetic measurement simulation experiment device and method |
| CN115220113B (en) * | 2022-07-08 | 2023-05-09 | 中国石油天然气集团有限公司 | Wellhead position detection system and method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5103920A (en) * | 1989-03-01 | 1992-04-14 | Patton Consulting Inc. | Surveying system and method for locating target subterranean bodies |
| CN101713286B (en) * | 2009-11-04 | 2013-05-01 | 中国石油大学(北京) | Electromagnetic system for detecting distance between adjacent wells while drilling |
| MX2013005519A (en) * | 2010-11-19 | 2013-07-05 | Schlumberger Technology Bv | Open-hole logging instrument and method for making ultr-deep magnetic and resistivity measurements. |
| CN102996120B (en) * | 2012-11-20 | 2015-11-25 | 中国石油大学(北京) | A kind of relief well based on three electrode systems is communicated with detection system with accident well |
| CN104131808B (en) * | 2014-07-16 | 2016-08-17 | 中国海洋石油总公司 | A kind of device based on transient electromagnetic method coordinate detection accident well |
-
2016
- 2016-01-19 CN CN201610032886.7A patent/CN105607137B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105607137A (en) | 2016-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105607137B (en) | A kind of relief well connects detection system and detection method with accident well | |
| CN103472409B (en) | Induction type triaxial magnetic field sensor | |
| CN103603650B (en) | A kind of transient electromagnetic logger | |
| CN103823244B (en) | Magnetic resonance three-component noise removing device and noise removing method | |
| CN104656157B (en) | A kind of method and device in identification shale gas dessert area | |
| US20160047224A1 (en) | Downhole Triaxial Electromagnetic Ranging | |
| CN104612671A (en) | Array induction coil system for measuring vertical formation conductivity | |
| JPH02504071A (en) | Extended range, pulsed induction logging tools and how to use them | |
| CN203930090U (en) | Magnetic probe in three-component TEM well | |
| CN103912270B (en) | Cross-well logging depth and speed synchronously controlled positioning system and method | |
| CN104035137A (en) | Underground full-space transient electromagnetic detecting instrument and detection method | |
| CN212083694U (en) | Downhole time domain electromagnetic multi-component far detection instrument and detection system based on same | |
| CN104597508A (en) | Three-axis magnetic sensor based three-dimensional magnetic field positioning method and system | |
| CN109490966A (en) | A kind of crustal magnetotelluric measurement system | |
| CN103630853A (en) | Inductive magnetic field sensor | |
| CN203640727U (en) | Transient electromagnetic well-logging instrument | |
| CN103941298A (en) | Transient electromagnetic instrument and hydro-geologic prospecting method for mine | |
| CN103590823A (en) | Device of measuring formation resistivity of drill | |
| CN104502984A (en) | Specific frequency noise canceling underground nuclear magnetic resonance detection device and detection method | |
| Lin et al. | A review on the progress of the underground nuclear magnetic resonance method for groundwater disaster forecasting detection of tunnels and mines | |
| CN103486909B (en) | Low-frequency electromagnetic induction secondary field imaginary component mine detection device and detection method | |
| CN204832539U (en) | Active seismic sensor of high sensitivity three -component | |
| CN112083507B (en) | Transient electromagnetic rescue well detection method based on empirical mode decomposition | |
| CN114217354A (en) | Electromagnetic data acquisition system and method based on optical fiber electromagnetic sensor | |
| CN107024722B (en) | A kind of low-temperature superconducting magnetic source transient electromagnetic landform correcting method of lane based on abnormal ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |
|
| CP01 | Change in the name or title of a patent holder |