CN217847514U - Well logging cable for compensated neutron instrument - Google Patents
Well logging cable for compensated neutron instrument Download PDFInfo
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- CN217847514U CN217847514U CN202221704797.XU CN202221704797U CN217847514U CN 217847514 U CN217847514 U CN 217847514U CN 202221704797 U CN202221704797 U CN 202221704797U CN 217847514 U CN217847514 U CN 217847514U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model discloses a logging cable for a compensated neutron instrument in the field of cables, which comprises a cable core unit, a first shielding layer, an oxygen isolation layer, a second shielding layer, an armor layer and an outer sheath which are arranged from inside to outside in sequence; a water-blocking wrapping layer is arranged between the cable core unit and the first shielding layer, a plurality of side strip-shaped protruding portions are arranged at the outer sheath, the side strip-shaped protruding portions extend along the length direction of the cable, a through hole is formed in each side strip-shaped protruding portion close to the end portion of the cable, the through holes penetrate through the side strip-shaped protruding portions, and a metal sleeve is fixedly installed in each through hole; each side strip-shaped bulge is internally provided with a tensile unit; the cable of the utility model is provided with the through hole connected with the compensation neutron instrument, thereby facilitating the firm connection; two shielding layers are arranged inside the cable, so that the shielding effect is good; the tensile unit and the steel wire armor layer enhance the tensile capacity of the cable.
Description
Technical Field
The utility model relates to a cable field, concretely relates to well logging cable for compensation neutron instrument.
Background
Logging is a method for measuring geophysical parameters by using the geophysical properties of the rock stratum, such as electrochemical properties, conductive properties, acoustic properties, radioactivity and the like; during petroleum drilling, logging, also called well completion electric logging, is required to be carried out after the well is drilled to the designed well depth, so as to obtain various petroleum geology and engineering technical data which are used as original data for well completion and oil field development;
a compensated neutron logging instrument belongs to a radioactive intensity logging instrument, and is a radioactive logging instrument which determines the porosity of a stratum and judges the lithology by measuring the hydrogen index of the stratum; the compensated neutron instrument is not afraid of high-voltage electric shock and physical stress shock; because the output signal is weak and shielding needs to be paid attention to, a logging cable used for the compensated neutron instrument is urgently required to be provided aiming at the characteristics of the compensated neutron instrument.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at overcoming the defects of the prior art and providing a well logging cable for a compensated neutron instrument.
The technical scheme is as follows: the logging cable for the compensated neutron instrument comprises a cable core unit, a first shielding layer, an oxygen isolation layer, a second shielding layer, an armor layer and an outer sheath which are sequentially arranged from inside to outside; a water-blocking wrapping layer is arranged between the cable core unit and the first shielding layer, a plurality of side strip-shaped protruding portions are arranged at the outer sheath, the side strip-shaped protruding portions extend along the length direction of the cable, a through hole is formed in each side strip-shaped protruding portion, the position of each side strip-shaped protruding portion is close to the end portion of the cable, the through holes penetrate through the side strip-shaped protruding portions, and metal sleeves are fixedly installed in the through holes; and each side strip-shaped bulge is internally provided with a tensile unit.
Furthermore, the cable core unit includes a plurality of sinle silks, every the sinle silk includes conductor, insulating layer and the fire-retardant layer that sets gradually from inside to outside.
Therefore, the wire core has good insulation and flame retardant effects.
Further, the conductor is formed by stranding a plurality of copper wires.
Further, each tensile unit comprises a plurality of tensile steel wire ropes and a tensile rope sheath layer surrounding the plurality of tensile steel wire ropes.
So that the tensile strength of the cable is strong.
Further, the number of the tensile steel wire ropes of each tensile unit is more than or equal to 7.
Further, the outer sheath and the side strip-shaped protruding portion are integrally formed in an extrusion molding mode.
Therefore, on one hand, the side strip-shaped protruding part of the outer sheath can enhance the wear-resisting property of the cable; on the other hand, the through-hole of side bar bulge department can with compensation neutron instrument fixed connection, the oversheath with the integrative extrusion molding of side bar bulge to the cable is connected more firmly with the compensation neutron instrument.
Furthermore, the first shielding layer and the second shielding layer are both copper wire braided shielding layers.
Further, the armor layer is a steel wire armor layer.
And thus the tensile capacity is better.
Has the advantages that: the utility model discloses a cable has following advantage:
(1) The cable is provided with a through hole at the side strip-shaped protruding part close to the end part of the cable, a metal sleeve is fixedly arranged at the through hole, and the metal sleeve and the through hole are fixed by bonding glue or other modes; the through hole at the end part of the cable can be conveniently connected with a compensated neutron instrument, so that the end part of the cable and the instrument are more stably fixed;
(2) The cable is internally provided with the first shielding layer and the second shielding layer, and the first shielding layer and the second shielding layer adopt copper wire braided shielding layers, so that the shielding effect of the cable is better;
(3) The cable is preferably provided with the steel wire armor layer, the strip-shaped protruding parts on the side surfaces of the outer sheath are internally provided with the tensile units, and each tensile unit is internally provided with a plurality of tensile steel wire ropes, so that the cable is good in tensile property.
Drawings
FIG. 1 is a schematic view of the overall first viewing angle of the present invention;
FIG. 2 is a schematic view of the overall second viewing angle of the present invention;
fig. 3 is a cross-sectional view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Reference numerals: 1: a wire core; 1.1: a conductor; 1.2: an insulating layer; 1.3: a flame retardant layer; 2: a water-blocking wrapping layer; 3: a first shielding layer; 4: an oxygen barrier layer; 5: a second shielding layer; 6: an armor layer; 7: an outer sheath; 7.1: a side bar-shaped projection; 8: a through hole; 8.1: a metal sleeve; 9: a tension unit; 9.1: a tensile steel wire rope; 9.2: a tensile cord sheath.
The logging cable for the compensated neutron instrument comprises a cable core unit, a first shielding layer 3, an oxygen barrier layer 4, a second shielding layer 5, an armor layer 6 and an outer sheath 7 which are sequentially arranged from inside to outside; a water-blocking wrapping layer 2 is arranged between the cable core unit and the first shielding layer 3, a plurality of side strip-shaped protruding portions 7.1 are arranged at the position of the outer sheath 7, the side strip-shaped protruding portions 7.1 extend along the length direction of the cable, a through hole 8 is formed in the position, close to the end portion of the cable, of each side strip-shaped protruding portion 7.1, the through holes 8 penetrate through the side strip-shaped protruding portions 7.1 and are consistent with the circumferential direction of the cable, and a metal sleeve 8.1 is fixedly installed in each through hole 8; each of the lateral strip-shaped projections 7.1 also has a tension unit 9 inside it.
The cable core unit comprises a plurality of cable cores 1; each wire core 1 comprises a conductor 1.1, an insulating layer 1.2 and a flame-retardant layer 1.3 which are sequentially arranged from inside to outside; the conductor 1.1 is formed by stranding a plurality of copper wires; each tensile unit 9 comprises a plurality of tensile steel wire ropes 9.1 and a tensile rope sheath 9.2 surrounding the plurality of tensile steel wire ropes 9.1; the number of the tensile steel wire ropes 9.1 of each tensile unit 9 is more than or equal to 7; the outer sheath 7 and the side strip-shaped protruding part 7.1 are integrally formed in an extrusion molding mode; the first shielding layer 3 and the second shielding layer 5 are both copper wire braided shielding layers; the armor layer 6 is a steel wire armor layer.
The following detailed description is made with reference to the accompanying drawings: the cable outer sheath is provided with a plurality of side strip-shaped protruding parts, each side strip-shaped protruding part extends along the length direction of the cable, a through hole is formed in the side strip-shaped protruding part close to the end part of the cable, a metal sleeve is fixedly installed at the through hole, the metal sleeve and the through hole can be fixed through bonding glue or other modes, the plurality of side strip-shaped protruding parts increase the wear resistance of the cable on one hand, on the other hand, the through holes formed in the side strip-shaped protruding parts close to the end part of the cable can be conveniently connected with a compensation neutron instrument, and the end part of the cable and the instrument can be fixed more stably;
the cable is suitable for compensating the characteristics of neutron instruments, a first shielding layer and a second shielding layer are arranged in the cable, and the first shielding layer and the second shielding layer are copper wire braided shielding layers, so that the shielding effect of the cable is better;
in addition, a steel wire armor layer is preferably selected for the cable, tensile units are arranged in the strip-shaped protruding parts on the side faces of the outer sheath, and a plurality of tensile steel wire ropes are arranged in each tensile unit, so that the cable is good in tensile property, and the logging cable for the compensated neutron instrument is realized.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Although the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.
Claims (8)
1. The logging cable for the compensated neutron instrument is characterized by comprising a cable core unit, a first shielding layer (3), an oxygen barrier layer (4), a second shielding layer (5), an armor layer (6) and an outer sheath (7) which are sequentially arranged from inside to outside; a water-blocking wrapping layer (2) is arranged between the cable core unit and the first shielding layer (3), a plurality of side strip-shaped protruding portions (7.1) are arranged at the position of the outer sheath (7), the side strip-shaped protruding portions (7.1) extend along the length direction of the cable, a through hole (8) is formed in the position, close to the end portion of the cable, of each side strip-shaped protruding portion (7.1), the through holes (8) penetrate through the side strip-shaped protruding portions (7.1), and a metal sleeve (8.1) is fixedly installed in each through hole (8); each lateral strip-shaped projection (7.1) is also provided with a tensile unit (9) inside.
2. The well logging cable for the compensated neutron instrument of claim 1, wherein the cable core unit comprises a plurality of cable cores (1), and each cable core (1) comprises a conductor (1.1), an insulating layer (1.2) and a flame retardant layer (1.3) which are sequentially arranged from inside to outside.
3. The logging cable for compensated neutron instruments according to claim 2, characterized in that the conductor (1.1) is stranded of a plurality of copper wires.
4. The logging cable for compensated neutron instruments according to claim 1, wherein each tensile unit (9) comprises a plurality of tensile steel cords (9.1) and a tensile cord jacket (9.2) surrounding the plurality of tensile steel cords (9.1).
5. The logging cable for compensated neutron instruments according to claim 4, characterized in that the number of tensile steel cords (9.1) of each tensile unit (9) is greater than or equal to 7.
6. The logging cable for compensated neutron instruments according to claim 1, characterized in that the outer sheath (7) is extruded integrally with the lateral strip-shaped projections (7.1).
7. The logging cable for compensated neutron instrument according to claim 1, wherein the first shielding layer (3) and the second shielding layer (5) are both copper wire braided shielding layers.
8. The logging cable for compensated neutron instruments according to claim 1, wherein the armor (6) is a steel wire armor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221704797.XU CN217847514U (en) | 2022-07-04 | 2022-07-04 | Well logging cable for compensated neutron instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221704797.XU CN217847514U (en) | 2022-07-04 | 2022-07-04 | Well logging cable for compensated neutron instrument |
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| Publication Number | Publication Date |
|---|---|
| CN217847514U true CN217847514U (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221704797.XU Active CN217847514U (en) | 2022-07-04 | 2022-07-04 | Well logging cable for compensated neutron instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116453751A (en) * | 2023-03-31 | 2023-07-18 | 江苏赛特电气有限公司 | Comprehensive protection B1-level flame-retardant cable for rail transit |
| CN116453751B (en) * | 2023-03-31 | 2024-06-04 | 江苏赛特电气有限公司 | Comprehensive protection B1-level flame-retardant cable for rail transit |
-
2022
- 2022-07-04 CN CN202221704797.XU patent/CN217847514U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116453751A (en) * | 2023-03-31 | 2023-07-18 | 江苏赛特电气有限公司 | Comprehensive protection B1-level flame-retardant cable for rail transit |
| CN116453751B (en) * | 2023-03-31 | 2024-06-04 | 江苏赛特电气有限公司 | Comprehensive protection B1-level flame-retardant cable for rail transit |
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