CN108798643B - Electric imaging measuring probe - Google Patents
Electric imaging measuring probe Download PDFInfo
- Publication number
- CN108798643B CN108798643B CN201810558863.9A CN201810558863A CN108798643B CN 108798643 B CN108798643 B CN 108798643B CN 201810558863 A CN201810558863 A CN 201810558863A CN 108798643 B CN108798643 B CN 108798643B
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- China
- Prior art keywords
- cover plate
- protective cover
- core electrode
- base body
- measuring probe
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- 239000000523 sample Substances 0.000 title claims abstract description 49
- 238000003384 imaging method Methods 0.000 title claims abstract description 36
- 230000001681 protective effect Effects 0.000 claims abstract description 56
- 239000012212 insulator Substances 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 14
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 7
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 7
- 229920002530 polyetherether ketone Polymers 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Measuring Leads Or Probes (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The embodiment of the invention provides an electric imaging measuring probe, which comprises a base body and a single-core electrode, wherein the base body is provided with a pin inserting hole, the single-core electrode comprises a metal electrode and an insulator, the single-core electrode is arranged in the pin inserting hole on the base body, in addition, the electric imaging measuring probe also comprises a protective cover plate, the protective cover plate is provided with a through hole, and the protective cover plate is fixed on the base body and shields at least one part of the insulator.
Description
Technical Field
The invention relates to the field of drilling measurement, in particular to an electric imaging measurement probe.
Background
At present, a single-core electrode of an electric imaging measuring probe adopts a glass sintering technology, when a glass sintering interface is directly exposed in a severe working environment, the single-core electrode can crack when being impacted by vibration and rubbed with a well wall, so that the insulating property and the sealing property of the measuring probe are reduced, and the imaging measuring effect is further influenced.
Disclosure of Invention
In order to solve the technical problems, embodiments of the present invention provide an electrical imaging measurement probe, which solves the problems that a measurement probe is prone to crack during use and insulation sealing performance is prone to be damaged, so as to obtain a good imaging measurement effect.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the embodiment of the invention provides an electric imaging measuring probe, which comprises a base body and a single-core electrode, wherein a pin hole is formed in the base body, the single-core electrode comprises a metal electrode and an insulator, the single-core electrode is installed in the pin hole in the base body, in addition, the electric imaging measuring probe also comprises a protective cover plate, a through hole is formed in the protective cover plate, the protective cover plate is fixed on the base body, the through hole corresponds to the metal electrode in position, and at least one part of the insulator is shielded by the protective cover plate.
Optionally, the protective cover is removably connected to the base.
Optionally, the protective cover plate is connected with the base body through a cover plate screw; or the protective cover plate is connected with the base body by adopting a buckle structure.
Optionally, the protective cover plate is a metal plate.
Optionally, the through hole is sleeved outside the single core electrode, and the protective cover plate is fixed on the upper part of the base body and presses the insulator.
Optionally, the single core electrode is detachably connected with the pin hole.
Optionally, the pin hole is a threaded hole, an external thread is arranged on the side wall of the insulator, and the single-core electrode is in threaded connection with the pin hole; or the single core electrode is clamped with the pin hole.
Optionally, a sealing ring is arranged between the single core electrode and the pin hole.
Optionally, the number of the pin holes is set to be a plurality, the pin holes are divided into at least 2 rows, and the pin holes in the adjacent 2 rows are arranged in a staggered manner.
Optionally, the single core electrode is manufactured by a PEEK injection molding process.
Compared with the prior art, the electric imaging measuring probe provided by the embodiment of the invention comprises a base body and a single-core electrode, wherein the base body is provided with a pin inserting hole, the single-core electrode comprises a metal electrode and an insulator, the single-core electrode is arranged in the pin inserting hole on the base body, the electric imaging measuring probe also comprises a protective cover plate, the protective cover plate is fixed on the base body, the protective cover plate is provided with a through hole, the through hole enables the protective cover plate not to shield the metal electrode, the influence on the measurement imaging effect is avoided, the protective cover plate is fixed on the base body and shields at least one part of the insulator, and the arrangement of the protective cover plate avoids the insulator from contacting with a well wall in a large area and causing the measuring probe to be damaged due to friction with the well wall, so that the service life of the measuring probe is prolonged.
Further, the protective cover plate is detachably connected with the base body, the base body is fixed through the cover plate screws or the clamping connection mode, the protective cover plate has a good protective effect on the single-core electrode, the protective cover plate is quite convenient to disassemble and assemble, the protective cover plate can be replaced after the protective cover plate is worn and abraded due to long-term work, the electric imaging measuring probe continues to be protected, and the use cost of the electric imaging measuring probe is reduced.
Furthermore, the protective cover plate is a high-wear-resistance metal shield, so that the protective cover plate has a good protective effect on a single-core electrode, particularly an insulator in the single-core electrode, and the service life of the single-core electrode is prolonged.
Furthermore, the through hole is sleeved outside the single-core electrode, the protective cover plate is abutted to the base body and compresses the insulator, so that the protective cover plate has a certain fixing effect on the single-core electrode, the single-core electrode is prevented from being separated from the pin hole due to vibration, the single-core electrode is effectively protected, and the service life of the measuring probe is further prolonged.
Furthermore, the single-core electrode is detachably connected with the pin hole, when a certain electrode fails, the failed electrode can be independently replaced without replacing the whole measuring probe, and the cost is greatly reduced; the pin holes are through holes, so that the processing is convenient during production and processing, and the cost is further reduced. The single-core electrode and the pin hole can be connected by threads, so that the structure is simple and firm, and the disassembly is convenient; the clamping mode can also be adopted.
Furthermore, a sealing ring is arranged between the single-core electrode and the pin inserting hole, so that the single-core electrode and the pin inserting hole are sealed more tightly, and the sealing performance of the electric imaging measuring probe in a vibration impact environment is still good.
Furthermore, the number of the pin holes is set to be 8, the pin holes are divided into 2 rows and are arranged in a staggered mode, the pin holes correspond to the positions of 8 single-core electrodes distributed on the surface of the base body, and the problem that the resolution of the electric imaging measuring probe is influenced due to the fact that the gap between two single-core electrodes located in different rows is too small is avoided.
Furthermore, the single-core electrode is manufactured by adopting a high-temperature PEEK injection molding process, cracks are not easy to generate in the using process, and the single-core electrode is subjected to high-temperature PEEK injection molding to form an insulator on the outer side of the single-core electrode, so that good insulation between the single-core electrode and a base body is ensured after the single-core electrode is installed on the base body.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic top view of an electrical imaging measurement probe according to an embodiment of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure A-A in FIG. 1;
FIG. 3 is a schematic view of a cross-sectional structure B-B in FIG. 1.
Wherein, the relationship between the reference numbers and the component names in fig. 1-3 is:
the device comprises a base body 1, a single-core electrode 2, a metal electrode 3, an insulator 4, a sealing ring 5, a protective cover plate 6, a cover plate screw 7 and a jackscrew hole 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The embodiment of the invention provides an electric imaging measuring probe, which comprises a base body 1 and single-core electrodes 2, wherein pin holes are formed in the base body 1, the single-core electrodes 2 comprise metal electrodes 3 and insulators 4, the single-core electrodes 2 are arranged in the pin holes in the base body 1, and each single-core electrode 2 can be independently disassembled, so that the defect that the whole measuring probe needs to be replaced when a certain electrode on the measuring probe breaks down is overcome, and the cost is greatly saved. The electric imaging measuring probe further comprises a protective cover plate 6, the protective cover plate 6 is fixed on the base body 1, a through hole is formed in the protective cover plate 6, the protective cover plate 6 is fixed on the base body 1 and covers at least one part of the insulator 4, the protective cover plate 6 is arranged, the insulator 4 is prevented from being in large-area contact with the well wall, friction is generated between the insulator and the well wall, the measuring probe is damaged, and therefore the service life of the measuring probe is prolonged.
Preferably, the single core electrode is detachably connected with the pin inserting hole, and the single core electrode can be in threaded connection with the pin inserting hole and can also be connected in a clamping connection mode.
As shown in fig. 3, the protective cover plate 6 is fixed on the base body 1 through the cover plate screw 7, countersunk holes are formed in four corners of the protective cover plate 6, the cover plate screw 7 is screwed into the base body 1 at the countersunk holes, the protective cover plate 6 is firmly fixed on the surface of the base body 1, and the single-core electrode 2 is well protected, the protective cover plate is very convenient to disassemble, assemble and replace, the protective cover plate can be replaced after being worn due to long-term work, the protective cover plate continues to protect the electric imaging measuring probe, and the use cost of the electric imaging measuring probe is reduced.
Preferably, the protective cover plate 6 must be a wear-resistant, corrosion-resistant metal plate. The protective cover plate 6 is a high-wear-resistance metal shield, has a good protective effect on the single-core electrode 2, particularly the insulator 4 in the single-core electrode 2, and prolongs the service life of the single-core electrode 2.
Preferably, as shown in fig. 2, the through hole is sleeved outside the single core electrode 2, and the protective cover plate 6 is fixed on the upper part of the base body 1.
The through-hole cover is outside single core electrode 2, and protective cover 6 supports on base member 1, and protective cover 6 has certain fixed action to single core electrode 2, avoids single core electrode 2 to deviate from the contact pin hole because of the vibration, the effectual single core electrode 2 of having protected, has further improved measuring probe's life.
Further, the single core electrode is detachably connected with the pin hole, and the single core electrode is connected with the pin hole through threads.
The pin hole is a threaded hole, the threaded connection is simple and firm, the disassembly is convenient, when a certain electrode fails, the failed electrode can be independently replaced, the whole measuring probe does not need to be replaced, and the cost is greatly reduced; the pin holes are through holes, so that the processing is convenient during production and processing, and the cost is further reduced. Of course, the single core electrode and the pin hole can also be connected in a clamping manner.
Specifically, as shown in fig. 2, a seal ring 5 is provided between the single core electrode 2 and the pin hole.
A sealing ring 5 is arranged between the single-core electrode 2 and the pin hole, so that the single-core electrode 2 and the pin hole are sealed more tightly, and the sealing performance of the electric imaging measuring probe is still good in a vibration impact environment.
Specifically, as shown in fig. 1 and 2, the number of the pin holes is set to 8, and the 8 pin holes are divided into 2 rows and staggered.
The number of the pin inserting holes is set to be 8, the pin inserting holes are divided into 2 rows and are arranged in a staggered mode, the pin inserting holes correspond to the positions of 8 single-core electrodes 2 distributed on the surface of the base body 1, and the problem that the resolution ratio of the electric imaging measuring probe is influenced due to the fact that the gap between the two single-core electrodes 2 is too small is avoided.
Preferably, the mono-core electrode 2 is manufactured by using a PEEK injection molding process.
The single-core electrode 2 is manufactured by adopting a high-temperature PEEK injection molding process, cracks are not easy to generate in the using process, the single-core electrode 2 is subjected to high-temperature PEEK injection molding, an insulator 4 is formed on the outer side of the single-core electrode 2, and good insulation between the single-core electrode 2 and the base body 1 is guaranteed after the single-core electrode is installed on the base body 1.
Preferably, the outer side wall of the base body 1 is provided with an external thread, and the outer side wall of the base body 1 is further provided with a mounting hole for mounting an O-shaped sealing ring.
The outer side wall of the base body 1 is provided with external threads and a mounting hole for mounting an O-shaped sealing ring, the base body 1 is fixed on the drill collar through threaded connection, the base body 1 and the drill collar are sealed through the O-shaped ring, and the connection reliability and sealing tightness between the base body 1 and the drill collar are guaranteed.
Preferably, as shown in fig. 1, the base body 1 is further provided with a jackscrew hole 8.
The two ends of the electrical imaging measuring probe are also provided with the jackscrew holes 8, when the electrical imaging measuring probe is to be taken down from the drill collar, the measuring probe is difficult to take down even if a screw between the measuring probe and the drill collar is taken down due to tight sealing of the O-shaped sealing ring, and the jackscrew penetrates through the jackscrew holes 8 at the moment, so that the measuring probe can be easily separated from the drill collar, and the measuring probe is more convenient to use.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides an electrical imaging measuring probe, includes base member and a plurality of single core electrode, be provided with the contact pin hole on the base member, single core electrode includes metal electrode and insulator, single core electrode installs on the base member the contact pin is downthehole, its characterized in that:
the electric imaging measuring probe also comprises a protective cover plate, a plurality of through holes are arranged on the protective cover plate, the protective cover plate is fixed on the base body, the through holes correspond to the metal electrodes in position, and the protective cover plate covers at least one part of the insulator;
the protective cover plate is a metal plate;
the quantity of pin holes sets up to a plurality ofly, and is a plurality of pin holes divide into 2 at least rows, and adjacent 2 rows pin holes staggered arrangement.
2. The electrical imaging measurement probe of claim 1, wherein: the protective cover plate is detachably connected with the base body.
3. The electrical imaging measurement probe of claim 2, wherein: the protective cover plate is connected with the base body through a cover plate screw;
or the protective cover plate is connected with the base body by adopting a buckle structure.
4. The electrical imaging measurement probe of claim 1, wherein: the through hole is sleeved outside the single core electrode, and the protective cover plate is fixed on the upper part of the base body and tightly presses the insulator.
5. The electrical imaging measurement probe of claim 1, wherein: the single core electrode is detachably connected with the pin hole.
6. The electrical imaging measurement probe of claim 5, wherein: the pin hole is a threaded hole, an external thread is arranged on the side wall of the insulator, and the single-core electrode is in threaded connection with the pin hole;
or the single core electrode is clamped with the pin hole.
7. The electrical imaging measurement probe of claim 6, wherein: and a sealing ring is arranged between the single-core electrode and the pin hole.
8. An electrical imaging measurement probe according to any one of claims 5 to 7 wherein: the single-core electrode is manufactured by adopting a PEEK injection molding process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810558863.9A CN108798643B (en) | 2018-06-01 | 2018-06-01 | Electric imaging measuring probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810558863.9A CN108798643B (en) | 2018-06-01 | 2018-06-01 | Electric imaging measuring probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108798643A CN108798643A (en) | 2018-11-13 |
| CN108798643B true CN108798643B (en) | 2022-04-08 |
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ID=64090336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810558863.9A Active CN108798643B (en) | 2018-06-01 | 2018-06-01 | Electric imaging measuring probe |
Country Status (1)
| Country | Link |
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| CN (1) | CN108798643B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2409529Y (en) * | 2000-02-18 | 2000-12-06 | 辽河石油勘探局测井公司 | Solid miniature lateral logging polar plate |
| US7520160B1 (en) * | 2007-10-04 | 2009-04-21 | Schlumberger Technology Corporation | Electrochemical sensor |
| CN202041657U (en) * | 2011-04-25 | 2011-11-16 | 中国海洋石油总公司 | Measuring probe of electric imaging logging instrument |
| US9989665B2 (en) * | 2015-04-29 | 2018-06-05 | Schlumberger Technology Corporation | Wear resistant electrodes for downhole imaging |
| CN204609862U (en) * | 2015-05-11 | 2015-09-02 | 中国海洋石油总公司 | Lateralog |
| CN106837320A (en) * | 2017-01-05 | 2017-06-13 | 杭州迅美科技有限公司 | A kind of the Electrical imaging measurement apparatus and method of the backflow of pole plate internal emission |
| CN107218958A (en) * | 2017-05-15 | 2017-09-29 | 中国海洋石油总公司 | A kind of measuring electrode and preparation method thereof |
| CN108661574B (en) * | 2018-05-17 | 2020-06-19 | 中国海洋石油集团有限公司 | While-drilling azimuth lateral resistivity measurement probe and drill collar |
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| CN108798643A (en) | 2018-11-13 |
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