CN108868743A - A kind of resistivity tool - Google Patents
A kind of resistivity tool Download PDFInfo
- Publication number
- CN108868743A CN108868743A CN201810632308.6A CN201810632308A CN108868743A CN 108868743 A CN108868743 A CN 108868743A CN 201810632308 A CN201810632308 A CN 201810632308A CN 108868743 A CN108868743 A CN 108868743A
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- China
- Prior art keywords
- coil
- fixing sleeve
- drill collar
- resistivity
- cylindrical surface
- 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.)
- Pending
Links
- 230000005284 excitation Effects 0.000 claims abstract description 61
- 239000000565 sealant Substances 0.000 claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims description 38
- 230000001681 protective effect Effects 0.000 claims description 32
- 210000004907 gland Anatomy 0.000 claims description 14
- 230000003139 buffering effect Effects 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 239000000872 buffer Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/06—Insulation of windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The embodiment of the invention provides a kind of resistivity tools, including drill collar and resistivity logging exciting bank, resistivity logging exciting bank is mounted on drill collar, resistivity logging exciting bank includes excitation coil and cover assembly, cover assembly is arranged on the external cylindrical surface of drill collar, the external cylindrical surface of cover assembly and drill collar forms a chamber, excitation coil is provided in chamber, and electric insulating sealant is set in chamber, efficiently solve the problems, such as that resistivity tool influences measurement effect because of the factors such as insulated enclosure performance difference and underground vibrating impact in use.
Description
Technical field
The present invention relates to drilling measuring fields, and in particular, to a kind of resistivity tool.
Background technique
When resistivity tool works under work condition environment, it is both needed between electrode and between electrode and drill collar keep good
Good insulated enclosure performance needs to install insulating materials additional between the electrodes, between electrode and drill collar, but in severe work condition environment
Under, the insulated enclosure performance of such insulated enclosure mode poor reliability, resistivity tool cannot be guaranteed, measurement effect by
To larger impact.
Summary of the invention
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of resistivity tool, resistivity is solved
The problem of logging instrument influences measurement effect because of the factors such as insulated enclosure performance difference and underground vibrating impact in use.
In order to reach the purpose of the present invention, the technical solution adopted by the present invention is as follows：
It is described the embodiment of the invention provides a kind of resistivity tool, including drill collar and resistivity logging exciting bank
Resistivity logging exciting bank is mounted on the drill collar, and the resistivity logging exciting bank includes excitation coil and lid group
Part, the cover assembly are arranged on the external cylindrical surface of the drill collar, the external cylindrical surface shape of the cover assembly and the drill collar
At a chamber, be provided with the excitation coil, and electric insulating sealant is set in the chamber in the chamber.
Optionally, the cover assembly includes coil fixing sleeve and coil protective case, and the coil fixing sleeve includes online
Fixing sleeve and lower coil fixing sleeve are enclosed, the coil fixing sleeve and the lower coil fixing sleeve are arranged at the outer of the drill collar
On cylindrical surface, and the two sides of the excitation coil are distributed in, the coil protective case is mounted on the coil fixing sleeve and institute
It states between lower coil fixing sleeve, and wraps up the excitation coil.
Optionally, the cover assembly further includes insulating ceramics, insulating ceramics setting in the coil protective case and
Between the lower coil fixing sleeve.
Optionally, the insulating ceramics is fixed with the lower coil fixing sleeve sealing-in.
Optionally, there are gaps for the junction of the coil protective case and the coil fixing sleeve, and/or, the line
There are gaps for the junction of circle protective case and the insulating ceramics.
Optionally, buffering dead ring is additionally provided between the insulating ceramics and the external cylindrical surface of the drill collar.
Optionally, coil brace, the coil are additionally provided between the excitation coil and the external cylindrical surface of the drill collar
Bracket is processed using insulating materials, and is fixed by screws on the external cylindrical surface of the drill collar.
Optionally, the coil brace is equipped with iron core, and the excitation coil is wrapped on the iron core.
Optionally, the resistivity logging exciting bank further includes positioning key and positioning key gland, wherein：The coil is solid
Fixed set is fixed on the external cylindrical surface of the drill collar by the positioning key, and the positioning key gland is set on the positioning key
Side, the positioning key gland are fixed by screws on the coil fixing sleeve.
Optionally, radial cable-through hole and axial cable-through hole are provided on the drill collar, power supply line sequentially passes through the axial mistake
String holes and the radial cable-through hole are simultaneously connect with the excitation coil.
Compared with prior art, resistivity tool provided in an embodiment of the present invention further includes excitation coil and lid group
Part, cover assembly are arranged on the external cylindrical surface of drill collar, external cylindrical surface one chamber of formation of cover assembly and drill collar, in chamber
It is provided with excitation coil, and electric insulating sealant is set in chamber, cover assembly wraps up excitation coil, protects excitation coil in work
From collision during work；It is provided with electric insulating sealant in the chamber that the external cylindrical surface of cover assembly and drill collar is formed, insulate close
Excitation coil is sealed in centre by sealing, is contacted excitation coil after preventing the foreign matters such as mud from entering chamber, is caused to excitation coil
Damage, further increases the insulated enclosure performance of resistivity logging exciting bank.
Further, cover assembly includes coil fixing sleeve and coil protective case, and coil fixing sleeve includes that coil is fixed
Set and lower coil fixing sleeve, coil fixing sleeve and lower coil fixing sleeve are arranged on the external cylindrical surface of drill collar, are distributed in sharp
The two sides of coil are encouraged, coil protective case is mounted between coil fixing sleeve and lower coil fixing sleeve, wraps up excitation coil, online
Circle fixing sleeve, lower coil fixing sleeve, coil protective case and drill collar surround the chamber of package excitation coil, protect excitation coil from
Damage.
Further, cover assembly further includes the insulating ceramics being arranged between coil protective case and lower coil fixing sleeve,
The excellent insulation performance of insulating ceramics can promote the insulation performance of resistivity logging exciting bank entirety, and insulating ceramics intensity
Height, the component as resistivity logging exciting bank are conducive to the intensity for improving resistivity logging exciting bank entirety, to mention
The service life of high resistivity well logging exciting bank.
Further, insulating ceramics is fixed with lower coil fixing sleeve sealing-in, and insulating ceramics is complex as with lower coil fixing sleeve
One, increases the anti-vibrating and impact performance of insulating ceramics, makes the intensity and anti-vibrating and impact performance of resistivity tool entirety
Higher, simultaneously because insulating ceramics with lower coil fixation is fixed by covering sealing-in, tightness between the two has been obtained very well
Guarantee, improve the sealing performance of resistivity tool entirety.
Further, due to the limitation of space factor, cause the thickness of coil protective case smaller, therefore coil protective case
Intensity is not enough to bear the pressure of mud for a long time, therefore is arranged in the junction of coil protective case and coil fixing sleeve and stitches
Gap, and/or, gap is arranged in the junction of coil protective case and insulating ceramics, when resistivity tool is in underground work, mud
Enter chamber by gap, keep chamber interior pressure identical as external pressure, avoids outside pressure in excitation coil outer jointing jacket
Difference is excessive, causes its pressure-bearing excessive and damages, improves the service life of resistivity tool.
Further, it is additionally provided with buffering dead ring between insulating ceramics and drill collar external cylindrical surface, buffers dead ring to exhausted
The radial vibration impact that edge ceramics are subject to has buffer function, and preventing insulating ceramics from shock occurs with drill collar causes to damage, simultaneously
Buffering dead ring can further strengthen the insulation performance of resistivity tool.
Further, excitation coil is mounted on drill collar external cylindrical surface by coil brace, and coil brace is to excitation coil
There is certain fixed function, and coil brace is processed using insulating materials, is made to insulate between excitation coil and drill collar, is avoided influencing
Resistivity tool works normally, and coil brace is fixed by screws on the drill collar external cylindrical surface, and screw fixation simply may be used
It leans on, it is convenient for disassembly and assembly.
Further, it is provided with high permeability iron core between excitation coil and coil brace, applies at excitation coil both ends
When alternating voltage, the drill collar at excitation coil both ends can generate alternating electromotive force, carry out resistivity measurement convenient for resistivity tool.
Further, resistivity logging exciting bank further includes positioning key and positioning key gland, wherein coil fixing sleeve
It is fixed on drill collar external cylindrical surface with lower coil fixing sleeve by positioning key, positioning key fixes coil fixing sleeve with lower coil
Set plays the role of positioning, and positioning key gland is fixed on coil fixing sleeve and lower coil fixing sleeve by screw, compresses positioning key
Prevent positioning key from falling off.
Further, excitation coil realizes Electricity Federation by radial cable-through hole on drill collar and axial cable-through hole and external power supply
It connects, power supply line is arranged in inside, avoids the damage during the work time to power supply line, and electric insulating sealant seals radial direction and crosses line
Hole, avoids mud and enters radial cable-through hole and damage to power supply line.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this
The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the structural schematic diagram of resistivity tool described in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram in another section of resistivity tool described in the embodiment of the present invention.
Wherein, the relationship in Fig. 1-Fig. 2 between appended drawing reference and component names is：
1 resistivity logging exciting bank, 2 cover assemblies, 21 coil fixing sleeves, 211 coil fixing sleeves, 212 lower coils
Fixing sleeve, 22 coil protective cases, 23 insulating ceramicses, 24 buffering dead rings, 3 positioning keys, 4 positioning key glands, 5 excitation coils, 6 lines
Coil support, 7 iron cores, 8 drill collars, 81 radial cable-through holes, 82 axial cable-through holes, 9 chambers, 10 sealing rings.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
The embodiment of the invention provides a kind of resistivity tool, including drill collar 8 and resistivity logging exciting bank 1, electricity
Resistance rate well logging exciting bank 1 is mounted on drill collar 8, and resistivity logging exciting bank 1 includes excitation coil 5 and cover assembly 2, lid
Body component 2 is arranged on the external cylindrical surface of drill collar 8, and the external cylindrical surface of cover assembly 2 and drill collar 8 forms a chamber 9, chamber 9
It is inside provided with excitation coil 5, and electric insulating sealant is set in chamber 9.
Resistivity tool provided in an embodiment of the present invention further includes excitation coil 5 and lid group compared with prior art
Part 2, cover assembly 2 are arranged on the external cylindrical surface of drill collar 8, and the external cylindrical surface of cover assembly 2 and drill collar 8 forms a chamber 9,
It is provided with excitation coil 5 in chamber 9, and electric insulating sealant is set in chamber 9, cover assembly 2 wraps up excitation coil 5, protection
Excitation coil 5 is during the work time from collision；It is provided with absolutely in the chamber 9 that the external cylindrical surface of cover assembly 2 and drill collar 8 is formed
Excitation coil 5 is sealed in centre by edge sealant, electric insulating sealant, contacts excitation line after preventing the foreign matters such as mud from entering chamber 9
Circle 5, damages excitation coil 5, further increases the insulated enclosure performance of resistivity logging exciting bank 1.
Specifically, as shown in Figure 1, cover assembly 2 includes coil fixing sleeve 21 and coil protective case 22, coil fixing sleeve 21
Including coil fixing sleeve 211 and lower coil fixing sleeve 212, coil fixing sleeve 211 and lower coil fixing sleeve 212 are arranged at
On the external cylindrical surface of drill collar 8, and be distributed in the two sides of excitation coil 5, coil protective case 22 be mounted on coil fixing sleeve 211 with
Between lower coil fixing sleeve 212, and wrap up excitation coil 5.
Cover assembly 2 includes coil fixing sleeve 21 and coil protective case 22, and coil fixing sleeve 21 includes coil fixing sleeve
211 and lower coil fixing sleeve 212, coil fixing sleeve 211 and lower coil fixing sleeve 212 are arranged at the external cylindrical surface of drill collar 8
On, be distributed in the two sides of excitation coil 5, coil protective case 22 be mounted on coil fixing sleeve 211 and lower coil fixing sleeve 212 it
Between, excitation coil 5 is wrapped up, coil fixing sleeve 211, lower coil fixing sleeve 212, coil protective case 22 and drill collar 8 surround package
The chamber 9 of excitation coil 5, protection excitation coil 5 are against damages.
Further, as shown in Figure 1, cover assembly 2 further includes insulating ceramics 23, insulating ceramics 23 is arranged in coil protective case
Between 22 and lower coil fixing sleeve 212.
Cover assembly 2 further includes the insulating ceramics 23 being arranged between coil protective case 22 and lower coil fixing sleeve 212, absolutely
The excellent insulation performance of edge ceramics 23 can promote the whole insulation performance of resistivity logging exciting bank 1, and insulating ceramics the last 23
Degree is high, the component as resistivity logging exciting bank 1, is conducive to improve the whole intensity of resistivity logging exciting bank 1, from
And improve the service life of resistivity logging exciting bank 1.
Preferably, insulating ceramics 23 is fixed with 212 sealing-in of lower coil fixing sleeve.
Insulating ceramics 23 is fixed with 212 sealing-in of lower coil fixing sleeve, and insulating ceramics 23 is complex as with lower coil fixing sleeve 212
One, increases the anti-vibrating and impact performance of insulating ceramics 23, makes the intensity and anti-vibrating and impact of resistivity tool entirety
Can be higher, simultaneously because insulating ceramics 23 with lower coil fixation is fixed by covering sealing-in, tightness between the two is obtained
Guarantee well, improves the sealing performance of resistivity tool entirety.
Further, there are gaps for the junction of coil protective case 22 and coil fixing sleeve 211, and/or, coil protective case
22 there are gaps with the junction of insulating ceramics 23.
Due to the limitation of space factor, cause the thickness of coil protective case 22 smaller, therefore the intensity of coil protective case 22
It is not enough to bear the pressure of mud for a long time, therefore is arranged in the junction of coil protective case 22 and coil fixing sleeve 211 and stitches
Gap, and/or, gap is arranged in the junction of coil protective case 22 and insulating ceramics 23, when resistivity tool is in underground work,
Mud enters chamber 9 by gap, keeps 9 internal pressure of chamber identical as external pressure, avoids inside and outside 5 outer jointing jacket of excitation coil
Lateral pressure difference is excessive, causes its pressure-bearing excessive and damages, improves the service life of resistivity tool.
Specifically, as shown in Figure 1, being additionally provided with buffering dead ring 24 between insulating ceramics 23 and the external cylindrical surface of drill collar 8.
It is additionally provided with buffering dead ring 24 between 8 external cylindrical surface of insulating ceramics 23 and drill collar, buffers 24 pairs of dead ring insulation
The radial vibration impact that ceramics 23 are subject to has buffer function, and preventing insulating ceramics 23 from shock occurs with drill collar 8 causes to damage, together
When buffering dead ring 24 can further strengthen the insulation performance of resistivity tool.It should be appreciated that setting buffering dead ring is excellent
Scheme is selected, in other cases, buffering dead ring can be not provided between insulating ceramics and the external cylindrical surface of drill collar.
Further, as shown in Figure 1, being additionally provided with coil brace 6, coil between excitation coil 5 and the external cylindrical surface of drill collar 8
Bracket 6 is processed using insulating materials, and is fixed by screws on the external cylindrical surface of drill collar 8.
Excitation coil 5 is mounted on 8 external cylindrical surface of drill collar by coil brace 6, and coil brace 6 has one to excitation coil 5
Fixed fixed function, and coil brace 6 is processed using insulating materials, is made to insulate between excitation coil 5 and drill collar 8, is avoided influencing
Resistivity tool works normally, and coil brace 6 is fixed by screws on 8 external cylindrical surface of drill collar, and screw is fixed simple
Reliably, convenient for disassembly and assembly.
Further, as shown in Figure 1, coil brace 6 is equipped with iron core 7, excitation coil 5 is wrapped on iron core 7.
It is provided with high permeability iron core 7 between excitation coil 5 and coil brace 6, applies alternation electricity at 5 both ends of excitation coil
When pressure, the drill collar 8 at 5 both ends of excitation coil can generate alternating electromotive force, carry out resistivity measurement convenient for resistivity tool.
Specifically, as shown in Figure 1, resistivity logging exciting bank 1 further includes positioning key 3 and positioning key gland 4, wherein：
Coil fixing sleeve 21 is fixed on the external cylindrical surface of drill collar 8 by positioning key 3, and positioning key gland 4 is set to 3 top of positioning key,
Positioning key gland 4 is fixed by screws on coil fixing sleeve 21.
Resistivity logging exciting bank 1 further includes positioning key 3 and positioning key gland 4, and wherein coil fixing sleeve 211 is under
Coil fixing sleeve 212 is fixed on 8 external cylindrical surface of drill collar by positioning key 3, positioning key 3 to coil fixing sleeve 211 with it is offline
Circle fixing sleeve 212 plays the role of positioning, and positioning key gland 4 is fixed on coil fixing sleeve 211 and lower coil fixing sleeve by screw
On 212, compressing positioning key 3 prevents positioning key 3 from falling off.
Further, as shown in Fig. 2, being provided with radial cable-through hole 81 and axial cable-through hole 82 on drill collar 8, power supply line sequentially passes through
Axial cable-through hole 82 and radial cable-through hole 81 are simultaneously connect with excitation coil 5.
Excitation coil 5 realized with external power supply and electrically connected by radial cable-through hole 81 on drill collar 8 and axial cable-through hole 82,
Power supply line is arranged in inside, avoids the damage during the work time to power supply line, and electric insulating sealant seals radial cable-through hole
81, it avoids mud and enters radial cable-through hole 81 power supply line is damaged.
Further, it in radial cable-through hole or axial cable-through hole, is connected using contact pin, which has pressure-bearing, absolutely
Edge and sealing function, when the cavity seal of excitation coil breaks down, which can pass through cable-through hole to avoid mud
Into chambers such as subsequent instrumentation electronic circuits, second protection can be played the role of to circuit.
In addition, between coil fixing sleeve 211 and the external cylindrical surface of drill collar 8, lower coil fixing sleeve 212 and drill collar 8 it is outer
O-ring seal 10 is provided between cylindrical surface.Make between coil fixing sleeve 211 and the external cylindrical surface of drill collar 8, lower coil it is solid
Surely sealing is tight between set 212 and the external cylindrical surface of drill collar 8, it is ensured that does not have mud infiltration, destroys the exhausted of resistivity tool
Edge sealing performance.
Although disclosed herein embodiment it is as above, the content only for ease of understanding the present invention and use
Embodiment is not intended to limit the invention.Technical staff in any fields of the present invention is taken off not departing from the present invention
Under the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementation
Scope of patent protection, the appended claims that must still be subject to defined.
Claims (10)
1. a kind of resistivity tool, it is characterised in that：Including drill collar and resistivity logging exciting bank, the resistivity logging
Exciting bank is mounted on the drill collar, and the resistivity logging exciting bank includes excitation coil and cover assembly, the lid
Body component is arranged on the external cylindrical surface of the drill collar, and the external cylindrical surface of the cover assembly and the drill collar forms a chamber
Room is provided with the excitation coil in the chamber, and electric insulating sealant is arranged in the chamber.
2. resistivity tool according to claim 1, it is characterised in that：The cover assembly include coil fixing sleeve and
Coil protective case, the coil fixing sleeve include coil fixing sleeve and lower coil fixing sleeve, the coil fixing sleeve and institute
It states lower coil fixing sleeve to be arranged on the external cylindrical surface of the drill collar, and is distributed in the two sides of the excitation coil, the line
Circle protective case is mounted between the coil fixing sleeve and the lower coil fixing sleeve, and wraps up the excitation coil.
3. resistivity tool according to claim 2, it is characterised in that：The cover assembly further includes insulating ceramics,
The insulating ceramics is arranged between the coil protective case and the lower coil fixing sleeve.
4. resistivity tool according to claim 3, it is characterised in that：The insulating ceramics is fixed with the lower coil
Set sealing-in is fixed.
5. resistivity tool according to claim 3, it is characterised in that：The coil protective case and the coil are solid
Surely there are gaps for the junction covered, and/or, there are gaps for the junction of the coil protective case and the insulating ceramics.
6. resistivity tool according to claim 3, it is characterised in that：The outer circle of the insulating ceramics and the drill collar
Buffering dead ring is additionally provided between cylinder.
7. resistivity tool as claimed in any of claims 1 to 6, it is characterised in that：The excitation coil with
Coil brace is additionally provided between the external cylindrical surface of the drill collar, the coil brace is processed using insulating materials, and passes through spiral shell
Nail is fixed on the external cylindrical surface of the drill collar.
8. resistivity tool according to claim 7, it is characterised in that：The coil brace is equipped with iron core, described
Excitation coil is wrapped on the iron core.
9. resistivity tool as claimed in any of claims 2 to 6, it is characterised in that：The resistivity logging
Exciting bank further includes positioning key and positioning key gland, wherein：
The coil fixing sleeve is fixed on the external cylindrical surface of the drill collar by the positioning key, the positioning key gland setting
Above the positioning key, the positioning key gland is fixed by screws on the coil fixing sleeve.
10. resistivity tool as claimed in any of claims 1 to 6, it is characterised in that：It is provided on the drill collar
Radial cable-through hole and axial cable-through hole, power supply line sequentially pass through the axial cable-through hole and the radial cable-through hole and swash with described
Encourage coil connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632308.6A CN108868743A (en) | 2018-06-19 | 2018-06-19 | A kind of resistivity tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632308.6A CN108868743A (en) | 2018-06-19 | 2018-06-19 | A kind of resistivity tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108868743A true CN108868743A (en) | 2018-11-23 |
Family
ID=64340641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810632308.6A Pending CN108868743A (en) | 2018-06-19 | 2018-06-19 | A kind of resistivity tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108868743A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305622A (en) * | 2019-08-02 | 2021-02-02 | 中国石油化工股份有限公司 | Resistivity imaging device |
| CN115726773A (en) * | 2021-08-30 | 2023-03-03 | 中国石油化工股份有限公司 | Device and method for measuring resistivity of formation probed before drilling |
| CN116291418A (en) * | 2023-05-19 | 2023-06-23 | 中海油田服务股份有限公司 | Logging instrument for electric imaging while drilling |
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Application publication date: 20181123 |