CN220106150U - Small-diameter hard electrode logging instrument with high insulation and high torque - Google Patents
Small-diameter hard electrode logging instrument with high insulation and high torque Download PDFInfo
- Publication number
- CN220106150U CN220106150U CN202321502312.3U CN202321502312U CN220106150U CN 220106150 U CN220106150 U CN 220106150U CN 202321502312 U CN202321502312 U CN 202321502312U CN 220106150 U CN220106150 U CN 220106150U
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- Prior art keywords
- insulating
- wall
- connecting cylinder
- mandrel
- hard electrode
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- 238000009413 insulation Methods 0.000 title claims abstract description 27
- 230000006835 compression Effects 0.000 claims abstract description 20
- 238000007906 compression Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 10
- 239000011152 fibreglass Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- Insulating Bodies (AREA)
Abstract
The utility model discloses a high-insulation high-torque small-diameter hard electrode logging instrument which comprises a connecting cylinder connected with an upper joint, an insulating mandrel connected with a lower joint, and an insulating cover screwed at the end part of the insulating mandrel, wherein the insulating cover is screwed on the outer wall of the insulating mandrel, and a compression nut is screwed on the inner wall of the connecting cylinder and compresses the inner wall of the connecting cylinder. The hard electrode logging instrument disclosed by the utility model has the advantages that the existing structural form and component structure composition are greatly simplified, the disassembly is convenient, in addition, the machined parts are fewer, the manufacturing cost and the structural design difficulty of instrument miniaturization are reduced, the hexagonal (hexagonal) matching structure designed in the instrument can bear at least 400 N.M torque, the torsional resistance of the instrument is improved, the insulation effect can be obviously improved by the sprayed insulation layer, and the reliability of the instrument is improved.
Description
Technical Field
The utility model relates to the field of conventional petroleum logging, in particular to a high-insulation high-torque small-diameter hard electrode logging instrument in the field.
Background
The hard electrode logging instrument is a common and important instrument in the field of conventional petroleum logging, and is mainly used for realizing insulating isolation of a downhole logging instrument string, serving as a return electrode of the dual-lateral logging instrument and providing a measuring electrode for the natural potential logging instrument. In the prior art, the insulation isolation method is mainly to perform insulation isolation through an insulation spacer bush made of nonmetallic materials, and an insulation anti-rotation pin or an insulation anti-rotation sleeve is used for preventing rotation of an instrument, and has the defects of more structural parts, larger outer diameter of the instrument, general insulation performance, large design difficulty of a small-diameter instrument and weaker torsion resistance of the instrument.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a small-diameter hard electrode logging instrument with high insulation and high torque.
In order to solve the technical problems, the utility model adopts the following technical scheme:
in a high insulation high torque small diameter hard electrode logging tool, the improvement comprising: the connecting sleeve comprises a connecting cylinder connected with an upper joint, an insulating mandrel connected with a lower joint, a part of the insulating mandrel is inserted into the connecting cylinder, an insulating cover is screwed at the end part of the part, a compression nut is screwed on the outer wall of the part and compresses the inner wall of the connecting cylinder, the radial section of one section of outer wall of the part is hexagonal, an insulating layer is sprayed on the section of outer wall, the radial section of the corresponding inner wall of the connecting cylinder and the section of outer wall is hexagonal, the outer wall of the insulating mandrel of the section is attached to the inner wall of the connecting cylinder, and the insulating sleeve is sleeved at the joint of the connecting cylinder and the insulating mandrel.
Further, an insulating pad is provided between the outer wall of the insulating mandrel and the end of the connecting cylinder.
Further, an insulating gasket is arranged between the compression nut and the inner wall of the connecting cylinder.
Further, a clamping groove is formed in the outer wall, adjacent to the compression nut, of the insulating mandrel, a check ring is installed in the clamping groove, and the check ring clamps the compression nut.
Further, the edge of the insulating cover protrudes towards the compression nut and forms a closed space for accommodating the retainer ring together with the compression nut.
Further, a glass fiber reinforced plastic layer is arranged on the outer wall of the insulating mandrel.
Furthermore, O-shaped sealing rings are arranged between the insulating sleeve and the connecting cylinder as well as between the insulating sleeve and the insulating mandrel, and the O-shaped sealing rings are pressure-bearing sealing rubber pieces.
The beneficial effects of the utility model are as follows:
the hard electrode logging instrument disclosed by the utility model has the advantages that the existing structural form and component structure composition are greatly simplified, the disassembly is convenient, in addition, the machined parts are fewer, the manufacturing cost and the structural design difficulty of instrument miniaturization are reduced, the hexagonal (hexagonal) matching structure designed in the instrument can bear at least 400 N.M torque, the torsional resistance of the instrument is improved, the insulation effect can be obviously improved by the sprayed insulation layer, and the reliability of the instrument is improved.
Drawings
FIG. 1 is a schematic diagram of an insulating portion of a hard electrode logging tool according to embodiment 1 of the present utility model;
fig. 2 is a cross-sectional view of the connecting barrel and insulating mandrel at the insulating layer.
Reference numerals: 1-insulating layer, 2-connecting cylinder, 3-insulating cover, 4-gland nut, 5-insulating gasket, 6-insulating sleeve, 7-insulating pad, 8-insulating core shaft, 9-glass fiber reinforced plastic layer, 10-retainer ring and 11-O-shaped sealing ring.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In embodiment 1, as shown in fig. 1, the embodiment discloses a small-diameter hard electrode logging instrument with high insulation and high torque, which can realize insulation, connection and high-temperature bearing between an upper connector and a lower connector of the hard electrode logging instrument, and comprises a connecting cylinder 2 connected with the upper connector of the hard electrode logging instrument, an insulating mandrel 8 connected with the lower connector of the hard electrode logging instrument, wherein the upper connector, the lower connector, the insulating mandrel and the connecting cylinder are high-temperature bearing structural members of the instrument. A part of the insulating mandrel is inserted into the connecting cylinder, the end part of the part is provided with the insulating cover 3 in a threaded manner, the compression nut 4 is arranged on the outer wall of the part in a threaded manner and compresses the inner wall of the connecting cylinder, the radial section of one section of outer wall in the part is hexagonal, the nonmetallic material insulating layer 1 is sprayed on the section of outer wall, as shown in figure 2, the radial section of the inner wall corresponding to the section of outer wall of the connecting cylinder is hexagonal, the outer wall of the section of insulating mandrel is attached to the inner wall of the connecting cylinder, and the hexagonal (hexagonal) matched structural form can prevent large torque rotation of the instrument while realizing electric insulation, and greatly reduce the structural design difficulty of instrument diameter miniaturization. The insulating sleeve 6 is sleeved at the joint of the connecting cylinder and the insulating mandrel.
An insulating pad 7 is provided between the outer wall of the insulating mandrel and the end of the connecting cylinder. An insulating spacer 5 is arranged between the compression nut and the inner wall of the connecting cylinder. The insulating sleeve, the insulating pad, the insulating gasket and the insulating cover are all made of nonmetallic insulating materials.
The clamping groove is formed in the outer wall, adjacent to the compression nut, of the insulating mandrel, the retainer ring 10 is installed in the clamping groove and clamps the compression nut, and the compression nut is prevented from loosening. The edge of the insulating cover protrudes towards the compression nut, and forms a closed space for accommodating the check ring together with the compression nut, and the check ring is always positioned in the closed space, so that the insulating performance of the instrument is not affected even if the insulating cover fails.
And a glass fiber reinforced plastic layer 9 is arranged on the outer wall of the insulating mandrel. An O-shaped sealing ring 11 is arranged between the insulating sleeve and the connecting cylinder and between the insulating sleeve and the insulating mandrel, so that mud is prevented from entering the inside of the instrument, and the O-shaped sealing ring is a pressure-bearing sealing rubber piece.
The mounting relation of the hard electrode logging instrument disclosed by the embodiment is as follows: firstly, the insulating sleeve 6 is arranged on the insulating mandrel 8, then the insulating pad 7, the connecting cylinder 2 and the insulating gasket 5 are sequentially arranged, and finally, all parts are pressed through the pressing nut 4, so that electric insulation is realized. And the installation check ring 10 is arranged, the insulating cover 3 is arranged on the insulating mandrel 8 through threads, the connecting cylinder 2 is connected with the upper joint of the hard electrode logging instrument through threads, the insulating mandrel 8 is connected with the lower joint of the hard electrode logging instrument through threads, and the threaded sleeve assembly is arranged on the upper joint so as to facilitate the connection of all instruments.
Claims (7)
1. A small diameter hard electrode logging instrument of high insulation high torque, its characterized in that: the connecting sleeve comprises a connecting cylinder connected with an upper joint, an insulating mandrel connected with a lower joint, a part of the insulating mandrel is inserted into the connecting cylinder, an insulating cover is screwed at the end part of the part, a compression nut is screwed on the outer wall of the part and compresses the inner wall of the connecting cylinder, the radial section of one section of outer wall of the part is hexagonal, an insulating layer is sprayed on the section of outer wall, the radial section of the corresponding inner wall of the connecting cylinder and the section of outer wall is hexagonal, the outer wall of the insulating mandrel of the section is attached to the inner wall of the connecting cylinder, and the insulating sleeve is sleeved at the joint of the connecting cylinder and the insulating mandrel.
2. The high insulation high torque small diameter hard electrode tool of claim 1, wherein: an insulating pad is arranged between the outer wall of the insulating mandrel and the end part of the connecting cylinder.
3. The high insulation high torque small diameter hard electrode tool of claim 1, wherein: an insulating gasket is arranged between the compression nut and the inner wall of the connecting cylinder.
4. The high insulation high torque small diameter hard electrode tool of claim 1, wherein: a clamping groove is formed in the outer wall, adjacent to the compression nut, of the insulating mandrel, a check ring is installed in the clamping groove, and the check ring clamps the compression nut.
5. The high insulation high torque small diameter hard electrode tool of claim 4, wherein: the edge of the insulating cover protrudes towards the compression nut and forms a closed space for accommodating the check ring together with the compression nut.
6. The high insulation high torque small diameter hard electrode tool of claim 1, wherein: and a glass fiber reinforced plastic layer is arranged on the outer wall of the insulating mandrel.
7. The high insulation high torque small diameter hard electrode tool of claim 1, wherein: o-shaped sealing rings are arranged between the insulating sleeve and the connecting cylinder as well as between the insulating sleeve and the insulating mandrel, and the O-shaped sealing rings are pressure-bearing sealing rubber parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321502312.3U CN220106150U (en) | 2023-06-13 | 2023-06-13 | Small-diameter hard electrode logging instrument with high insulation and high torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321502312.3U CN220106150U (en) | 2023-06-13 | 2023-06-13 | Small-diameter hard electrode logging instrument with high insulation and high torque |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220106150U true CN220106150U (en) | 2023-11-28 |
Family
ID=88846936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321502312.3U Active CN220106150U (en) | 2023-06-13 | 2023-06-13 | Small-diameter hard electrode logging instrument with high insulation and high torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220106150U (en) |
-
2023
- 2023-06-13 CN CN202321502312.3U patent/CN220106150U/en active Active
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