CN208672573U - A kind of downhole detection module, equipment and system - Google Patents
A kind of downhole detection module, equipment and system Download PDFInfo
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- CN208672573U CN208672573U CN201820759901.2U CN201820759901U CN208672573U CN 208672573 U CN208672573 U CN 208672573U CN 201820759901 U CN201820759901 U CN 201820759901U CN 208672573 U CN208672573 U CN 208672573U
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- downhole detection
- sleeve pipe
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Abstract
The utility model discloses a kind of downhole detection module, equipment and systems, the module may include more than two eccentric probes, wherein, each eccentric probe is made of the transmitting coil and receiving coil of transceiver, and the eccentric probe is centered on described sleeve pipe axle center, evenly distributed around described sleeve pipe axle center；And the signal picker that the signal driver of transmitting signal is provided and the reception signal of each eccentric probe is acquired for each eccentric probe.
Description
Technical field
The utility model relates to oil exploitation safeguard technology more particularly to a kind of downhole detection module, equipment and it is
System.
Background technique
Currently, China's most oilfields enter the middle and later periods, in long-term production process, produce casing due to answering on stratum
There is different degrees of damage, such as undergauge, perforation, corrosion and rupture in the reasons such as power, chemical attack, collapse so as to cause the borehole wall
It collapses, causes the note in oil field to adopt unbalance and limitation volume increase, seriously affected the normal production in each oil field.It is therefore desirable to for life
It produces casing and carries out damage check.
Casing damage is detected currently, generalling use transient electromagnetic method, principle is by applying to transmitting coil
Bipolarity step signal or Ramp input turn off interval in pulsatile once magnetic field, observe secondary turbulence field using receiving coil,
It is changed with time rule by the secondary field of various time points after measurement power-off, the Di electricity Te of underground different depth can be obtained
Property.During underground detects, since the conductivity of the metals such as casing is much larger than air, cement sheath and the conductivity on stratum, because
This, can be according to the damage abnormal conditions for the induced electromotive force inverting down-hole casing that receiving coil receives.
It is existing in the related technology, mostly use improve transient electromagnetic detecting signal-to-noise ratio with improve down-hole casing damage
The performance of detection.Therefore, signal measured by the relevant technologies includes the information of sleeve circumferential 0-360 degree, be cannot achieve to damage
Hurt the accurate positioning of position, to reduce the performance of casing damage detection.
Utility model content
In order to solve the above technical problems, the utility model embodiment is intended to provide a kind of downhole detection module, equipment and is
System, can accurately position down-hole casing damage position, improve the performance of casing damage detection.
The technical solution of the utility model is achieved in that
In a first aspect, the utility model embodiment provides a kind of downhole detection module, the module is placed in the set of underground
Guan Zhong, the module include:
More than two bias probes, wherein each eccentric transmitting coil and reception line popped one's head in by transceiver
Circle composition, and the eccentric probe is centered on described sleeve pipe axle center, it is evenly distributed around described sleeve pipe axle center；And
The signal driver of transmitting signal is provided for each eccentric probe and the reception signal of each eccentric probe is adopted
The signal picker of collection.
Second aspect, the utility model embodiment provide a kind of downhole detection equipment, and the equipment includes: halter,
Upper and lower centralizer, cable drive module, down-hole power module and downhole detection module；Halter is located at the downhole detection
The top of equipment, the upper centralizer are connected with the halter and are placed in the halter or less and the cable drive module
Be connected, the down-hole power module is placed in the cable drive module or less and is connected with the downhole detection module, under help
The bottom that positive device is placed in the downhole detection equipment is connected with the downhole detection module；Wherein, the downhole detection module
For downhole detection module described in first aspect.
The third aspect, the utility model embodiment provide a kind of underground detection system, which includes second aspect institute
The downhole detection equipment and ground system stated；Wherein, ground system includes master system and is equipped with Martin Decker
Logging winch.
The utility model embodiment provides a kind of downhole detection module, equipment and system；In being with casing axis
Evenly distributed eccentric probe is arranged around the center for the heart, so that each eccentric probe is able to detect respectively corresponding search coverage
Induced electromotive force, so as to accurately be positioned to down-hole casing damage position, improve casing damage detection property
Energy.
Detailed description of the invention
Fig. 1 is a kind of composition schematic diagram of downhole detection module provided by the embodiment of the utility model；
Fig. 2 is the composition schematic diagram of another downhole detection module provided by the embodiment of the utility model；
Fig. 3 is a kind of setting schematic diagram of eccentric probe provided by the embodiment of the utility model；
Fig. 4 is the setting schematic diagram of another eccentric probe provided by the embodiment of the utility model；
Fig. 5 is a kind of perspective view of eccentric probe provided by the embodiment of the utility model；
Fig. 6 is a kind of detection schematic diagram of eccentric probe provided by the embodiment of the utility model；
Fig. 7 is a kind of detection schematic diagram of center probe provided by the embodiment of the utility model；
Fig. 8 is a kind of downhole detection equipment composition schematic diagram provided by the embodiment of the utility model；
Fig. 9 is a kind of underground detection system composition schematic diagram provided by the embodiment of the utility model.
Specific embodiment
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below in conjunction with this reality
With the attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that
The described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Based on the utility model
In embodiment, those of ordinary skill in the art's every other implementation obtained without making creative work
Example, fall within the protection scope of the utility model.
Referring to Fig. 1, it illustrates a kind of composition of downhole detection module 1 provided by the embodiment of the utility model, the modules 1
It is placed in the casing of underground, may include:
More than two eccentric probes 11, wherein transmitting coil and reception of each eccentric probe by transceiver
Coil composition, and the eccentric probe is centered on described sleeve pipe axle center, it is evenly distributed around described sleeve pipe axle center；And it is
The signal that each eccentric probe provides the signal driver 12 of transmitting signal and is acquired to the reception signal of each eccentric probe
Collector 13.
In the present embodiment, by taking the quantity N=4 of eccentric probe 11 as an example, eccentric probe A, B, C, D are respectively set as.Ginseng
Application schematic diagram as shown in Figure 2, in downhole detection module, this 4 eccentric probes are with casing axis (referring to shown in dotted line)
Centered on, it is evenly distributed around described sleeve pipe axle center；And each corresponding signal driver 12 of probe and a signal are adopted
Storage 13, in Fig. 2, signal driver and signal sensor be can be set together, in Fig. 2 shown in box.
For downhole detection module 1 shown in FIG. 1, in one possible implementation, referring to Fig. 3, the eccentric spy
First 11 may be at same plane, and be arranged as uniform planar array around described sleeve pipe axle center.
By taking four shown in Fig. 2 eccentric probes as an example, referring to Fig. 3, eccentric probe A, B, C, D are in same plane, and
And round battle array is equably arranged in around casing axis (referring to shown in chain-dotted line).
It is to be appreciated that, since bias probe is in same plane, being answered in arrangement mode shown in Fig. 3
The situation larger for casing inner diameter.But usual casing inner diameter is smaller, can not accommodate multiple eccentric probes simultaneously in same
Plane is based on this, referring to fig. 4, described in alternatively possible implementation for downhole detection module 1 shown in FIG. 1
Bias probe 11 distance can be arranged according to the preset depth, and be arranged successively around described sleeve pipe axle center, and the bias is visited
Head is arranged as uniform planar array with the projection of described sleeve pipe axis direction.
By taking four shown in Fig. 2 eccentric probes as an example, eccentric probe A, can distance according to the preset depth between B, C, D
Setting, and equably arranged around casing axis, and projected by direction of casing axis, referring to Fig. 5,4 eccentric spies
The projection of head, as shown in the dash box in Fig. 5, the projection of 4 eccentric probes forms round battle array.
Based on the implementation, specifically, based on distance setting according to the preset depth between eccentric probe, therefore,
The signal picker 13, the induction for measuring corresponding eccentric probe according to the depth distance between the eccentric probe
Electromotive force is corrected.It is to be appreciated that obtained result is equivalent to eccentric spy after the correction for passing through signal picker 13
Head is according to the measured induced electromotive force of arrangement shown in Fig. 2.
For the present embodiment, uniform planar array described in above-mentioned implementation can preferably be uniform circular array
With uniform square matrix.
In addition, in the present embodiment, for bias probe, centered on described sleeve pipe axle center, according to the bias
Described sleeve pipe is circumferentially divided into N number of search coverage by the arrangement of probe；Wherein, the quantity that the N pops one's head in for the bias, and institute
Eccentric probe is stated to correspond with the search coverage.
By taking round battle array shown in Fig. 2 or equivalent circular battle array shown in Fig. 3 as an example, four eccentric probes are by 360 degree of sleeve circumferential etc.
It is divided into four search coverages, each search coverage is corresponding with eccentric probe.Shown in Figure 6, eccentric probe A, B, C, D can divide
0 degree of casing axis, 90 degree, 180 degree and -90 degree four directions are not set, 4 search coverages are respectively corresponded, in Fig. 6
Shown in the cross spider filling region with number 1,2,3,4.Fig. 6 can be seen that four eccentric probes can be corresponding to itself
Search coverage sends signal, and the signal by receiving determines that corresponding search coverage whether there is exception, so as to
Damage in enough locating sleeves appears in which search coverage or direction.
For downhole detection module 1 shown in FIG. 1, in addition to bias is popped one's head in, can also be arranged on described sleeve pipe axle center
Heart probe.
Specifically, if the eccentric probe is in same plane, the center probe is in the eccentric probe
Same plane；
If the eccentric distance according to the preset depth of popping one's head in, and be arranged successively around described sleeve pipe axle center, then when described inclined
The heart pops one's head in quantity N when being odd number, the center probe and theA eccentric probe is in same plane；When described inclined
The heart pops one's head in quantity N when being even number, and the center probe is in theA eccentric probe and theBetween a eccentric probe,
And the center probe and described theDepth distance and the center probe between a eccentric probe and described theIt is a
The distance between bias probe is identical.
It is to be appreciated that center probe can be to 360 degree of transmitting signals of sleeve circumferential, so as to enhance transmitting signal
Power improves the intensity that detection receives signal, increases the thickness that can detect casing.Shown in circle battle array shown in Fig. 2 or Fig. 3
Equivalent circular battle array for, four eccentric probes are divided into four search coverages for 360 degree of sleeve circumferential, each search coverage with it is inclined
Heart probe corresponds to.So on the basis of Fig. 6, referring to Fig. 7, center probe M is set at casing axis, to sleeve circumferential 360
Degree transmitting signal, so that eccentric probe can receive more superpower reception signal, so as to be able to detect that more
The degree of impairment of thick casing.Referring to Fig. 7, the reception signal of search coverage 2 occur it is abnormal, referring to shown in light color shade, then partially
Heart probe A can go out the exception based on signal identification is received, so as to which casing damage position is positioned at search coverage 2,
To improve detection accuracy.
Based on above content, referring to Fig. 8, it illustrates a kind of downhole detection equipment 8 provided by the embodiment of the utility model,
The equipment 8 is set to underground, comprising: halter 81, upper centralizer 82, lower centralizer 83, cable drive module 84, underground
Power module 85 and downhole detection module 1；Halter 81 is located at the top of the downhole detection equipment 8, the upper centralizer
82 are connected with the halter 81 and are placed in 81 or less the halter and are connected with the cable drive module 84, the underground
Power module 85 is placed in 84 or less the cable drive module and is connected with the downhole detection module 1, and lower centralizer 83 is placed in
The bottom of the downhole detection equipment 8 is connected with the downhole detection module 1；Wherein, the downhole detection module 1 is aforementioned
Detection module 1 under any well as described in the examples.
For Fig. 8, halter 81 can be used for connecting single-core cable and downhole detection module 1, waterproof resistance to compression；
Upper centralizer 82, lower centralizer 83 are used in detection process, and downhole detection equipment 8 is made to remain at wellbore axis
Line position avoids downhole detection equipment 8 from shaking in well and generates measurement error；
Cable drive module 84 is used to couple single-core cable for measuring signal, and signal is uploaded to ground system；
Down-hole power module 85 is made of DC-DC power supply module and multiple integrated voltage-stabilized pipes, by power bus to underground
Detection module 1 provides required voltage, and exciting current is no more than rated value；
Based on above content, the utility model embodiment additionally provides a kind of underground detection system 9, may include Fig. 8 institute
The downhole detection equipment 8 and ground system 901 shown, the master system in ground system 901 can realize cable communication, depth
Synchronous, signal processing and display imaging.And Martin Decker is installed on logging winch, it will by the single-core cable on logging winch
Instrument is transferred into well, and logging cable passes through Martin Decker, and the logging cable of operation drives the measurement wheel rotation of Martin Decker, together
Walk the photoelectric encoder output pulse signal of rotation, the depth and speed of metering cable operation.Single-core cable in logging winch
It is connected with ground cabinet by underground power supply used power supply line, ground cabinet is connected by USB line with computer, can be by collected well
The information such as lower test data, temperature, orientation are stored on computers, handled and are imaged display.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, the change that can be readily occurred in
Change or replace, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with described
Subject to scope of protection of the claims.
Claims (10)
1. a kind of downhole detection module, which is characterized in that the module is placed in the casing of underground, and the module includes:
More than two eccentric probes, wherein each eccentric transmitting coil and receiving coil group popped one's head in by transceiver
At, and the eccentric probe is centered on described sleeve pipe axle center, and it is evenly distributed around described sleeve pipe axle center；
And the signal driver of transmitting signal is provided for each eccentric probe and the reception signal of each eccentric probe is adopted
The signal picker of collection.
2. module according to claim 1, which is characterized in that the eccentric probe is in same plane, and around the set
Pipe axle center is arranged as uniform planar array.
3. module according to claim 1, which is characterized in that the eccentric probe distance setting according to the preset depth,
And it is arranged successively around described sleeve pipe axle center, and the eccentric probe is arranged as uniformly with the projection of described sleeve pipe axis direction
Planar array.
4. module according to claim 3, which is characterized in that the signal picker, for according to the eccentric probe
Between depth distance the induced electromotive force that corresponding eccentric probe measures is corrected.
5. module according to claim 1, which is characterized in that the module further includes center probe, is arranged in the set
On pipe axle center.
6. module according to claim 5, which is characterized in that if the eccentric probe is in same plane, it is described in
Heart probe is in same plane with the eccentric probe；
If the eccentric distance according to the preset depth of popping one's head in, and be arranged successively around described sleeve pipe axle center, then when the eccentric spy
When head quantity N is odd number, the center probe and theA eccentric probe is in same plane；When the eccentric spy
When head quantity N is even number, the center probe is in theA eccentric probe and theBetween a eccentric probe, and institute
State center probe and described theDepth distance and the center probe between a eccentric probe and described theA bias
The distance between probe is identical.
7. module according to claim 2 or 3, which is characterized in that the uniform planar array include uniform circle battle array or
Uniform square matrix.
8. module according to any one of claims 1 to 6, which is characterized in that centered on described sleeve pipe axle center, according to institute
Described sleeve pipe is circumferentially divided into N number of search coverage by the arrangement for stating eccentric probe；Wherein, the N is the number of the eccentric probe
Amount, and the eccentric probe is corresponded with the search coverage.
9. a kind of downhole detection equipment, which is characterized in that the equipment includes: halter, upper and lower centralizer, cable drive mould
Block, down-hole power module and downhole detection module；Halter is located at the top of the downhole detection equipment, the upper centralizer
It is connected with the halter and is placed in the halter or less and is connected with the cable drive module, the down-hole power module
It is placed in the cable drive module or less to be connected with the downhole detection module, lower centralizer is placed in the downhole detection equipment
Bottom be connected with the downhole detection module；Wherein, the downhole detection module is described in any one of claim 1 to 8
Downhole detection module.
10. a kind of underground detection system, which is characterized in that the system comprises downhole detection equipment as claimed in claim 9 with
And ground system；Wherein, ground system includes master system and the logging winch for being equipped with Martin Decker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820759901.2U CN208672573U (en) | 2018-05-21 | 2018-05-21 | A kind of downhole detection module, equipment and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820759901.2U CN208672573U (en) | 2018-05-21 | 2018-05-21 | A kind of downhole detection module, equipment and system |
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| CN208672573U true CN208672573U (en) | 2019-03-29 |
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| CN201820759901.2U Active CN208672573U (en) | 2018-05-21 | 2018-05-21 | A kind of downhole detection module, equipment and system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542930A (en) * | 2019-09-20 | 2019-12-06 | 西安石油大学 | Device and system for detecting damage information of sleeve |
| CN111734389A (en) * | 2020-07-29 | 2020-10-02 | 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 |
| CN112014458A (en) * | 2020-09-04 | 2020-12-01 | 中广核检测技术有限公司 | Eddy current probe set and method for detecting defects of small-diameter pipe |
| CN113503154A (en) * | 2021-04-14 | 2021-10-15 | 西安石油大学 | Eccentric error correction method and device for downhole transient electromagnetic detection and storage medium |
-
2018
- 2018-05-21 CN CN201820759901.2U patent/CN208672573U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542930A (en) * | 2019-09-20 | 2019-12-06 | 西安石油大学 | Device and system for detecting damage information of sleeve |
| CN111734389A (en) * | 2020-07-29 | 2020-10-02 | 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 |
| CN112014458A (en) * | 2020-09-04 | 2020-12-01 | 中广核检测技术有限公司 | Eddy current probe set and method for detecting defects of small-diameter pipe |
| CN113503154A (en) * | 2021-04-14 | 2021-10-15 | 西安石油大学 | Eccentric error correction method and device for downhole transient electromagnetic detection and storage medium |
| CN113503154B (en) * | 2021-04-14 | 2024-01-30 | 西安石油大学 | Eccentric error correction method, device and storage medium for underground transient electromagnetic detection |
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