CN110544559B - Logging packaging cable and preparation method thereof - Google Patents
Logging packaging cable and preparation method thereof Download PDFInfo
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- CN110544559B CN110544559B CN201910924753.4A CN201910924753A CN110544559B CN 110544559 B CN110544559 B CN 110544559B CN 201910924753 A CN201910924753 A CN 201910924753A CN 110544559 B CN110544559 B CN 110544559B
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 47
- 239000010959 steel Substances 0.000 claims description 47
- 239000010410 layer Substances 0.000 claims description 34
- 238000001125 extrusion Methods 0.000 claims description 24
- 238000005538 encapsulation Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 10
- 239000011241 protective layer Substances 0.000 claims description 7
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 6
- 229920009441 perflouroethylene propylene Polymers 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- 239000004636 vulcanized rubber Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 230000001681 protective effect Effects 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 238000000227 grinding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/40—Insulated conductors or cables characterised by their form with arrangements for facilitating mounting or securing
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacturing Of Electric Cables (AREA)
Abstract
The invention discloses a logging packaging pipe cable and a preparation method thereof, wherein the logging packaging pipe cable comprises a packaging layer, a protective pipe, a filling layer and a cable which are sequentially arranged from outside to inside; the cross section of the packaging layer is polygonal; the manufacturing method of the logging packaging pipe mainly comprises two steps of processing and forming a protection pipe, laying the cable and processing a packaging layer. The invention has simple structure, low manufacturing cost and reasonable production process, the sealing layer improves the corrosion resistance of the protection pipe, the cross section of the sealing layer is polygonal, the sealing layer is convenient for the contact and grabbing of a logging cable pushing machine, the protection pipe has higher yield load, and the integral compression resistance and tensile resistance are improved.
Description
Technical Field
The invention relates to the field of logging cables, in particular to a logging packaging cable and a preparation method thereof.
Background
The logging cable can be used for logging, perforation, coring and other operations of various oil and gas wells, can also be used for water conservancy hydrologic measurement, coal field geological exploration, geothermal logging and other aspects, and is a connecting line for bearing connection and measurement data transmission between a ground system and an underground instrument.
The existing oil well working conditions are severe, are often in environments of high temperature, high pressure, corrosive media including oil gas and the like, are limited by narrow spaces of oil well casings, often cables are bent or corroded and damaged in the installation process, and how to improve the compression resistance, the tensile resistance and the corrosion resistance of the logging cable is a problem to be solved urgently for the logging cable with the length of thousands of meters or even tens of meters.
Disclosure of Invention
The invention aims to provide a logging packaging pipe cable and a preparation method thereof, wherein the logging packaging pipe cable has higher compression resistance, tensile resistance and corrosion resistance.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a logging packaging cable, which comprises a packaging layer, a protection pipe and a cable which are sequentially arranged from outside to inside; the cross section of the packaging layer is polygonal.
Further, the packaging layer is made of thermoplastic vulcanized rubber TPV materials.
Furthermore, the protection tube is made of 825 steel tube materials.
Further, the cable comprises an outer protective layer, an insulating layer and a wire core which are sequentially arranged from outside to inside.
Furthermore, the outer protective layer is made of polypropylene PP material.
Further, the insulating layer is made of fluorinated ethylene propylene copolymer FEP material.
The method for manufacturing the logging packaging cable comprises the following steps of:
step one, processing and forming a protection tube and laying a cable: placing a steel coil raw material for producing the protection tube on steel belt coiling equipment, placing the coiled cable on the cable coiling equipment, and processing the initial end of the steel coil raw material into a complete set of protection tube provided with the cable after passing through steel tube primary forming equipment, cable coiling equipment, steel tube laser welding equipment, nondestructive inspection equipment, steel tube drawing equipment and traction equipment in sequence; the protection tube is curled and rolled under the action of the tube cable coiling equipment to be used in the next working procedure;
step two, processing the packaging layer: placing the protective tube to be packaged on a tube cable coiling device, and sequentially passing the initial end of the protective tube through a steel tube straightening device, a steel tube preheating device, a packaging extrusion device, a cooling device and a traction device to form a packaging layer; the packaging pipe is curled and rolled under the action of the coiling equipment.
Furthermore, the steel coil raw material for producing the protection tube is subjected to alkaline hot water degreasing treatment.
Further, the steel pipe preheating device comprises an air heater and a preheating pipeline which are communicated through a pipeline, plugs are connected to the two ends of the preheating pipeline in a sealing mode, and pipe passing holes are formed in the middle of the plugs.
Further, a die sleeve extrusion port of the encapsulation extrusion device for producing the encapsulation layer is arranged in a polygonal shape.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention has simple structure, low manufacturing cost and reasonable production process, the sealing layer improves the corrosion resistance of the protection pipe, the cross section of the sealing layer is polygonal, the sealing layer is convenient for the contact and grabbing of a logging cable pushing machine, the protection pipe has higher yield load, and the integral compression resistance and tensile resistance are improved.
Drawings
The invention is further described with reference to the following description of the drawings.
FIG. 1 is a schematic diagram of a well logging packaging cable of the present invention;
FIG. 2 is a schematic diagram of a production flow of the protective tube forming and cable laying of the present invention;
FIG. 3 is a schematic diagram of a process flow of the encapsulation layer according to the present invention;
FIG. 4 is a schematic structural view of the steel pipe preheating device of the present invention;
FIG. 5 is an illustration of an extrusion process of the extrusion die of the present invention;
FIG. 6 is a cross-sectional view of a die sleeve of an extrusion die of the present invention;
FIG. 7 is a left side view of the die sleeve of the extrusion grinding tool of the invention;
FIG. 8 is a cross-sectional view of the die core of the extrusion die of the present invention;
fig. 9 is a right side view of the die core of the extrusion die of the present invention.
Reference numerals illustrate: 1. an encapsulation layer; 2. a protective tube; 3. a cable; 301. an outer protective layer; 302. an insulating layer; 303. a wire core; 4. an air heater; 5. preheating a pipeline; 6. a plug; 7. and (5) passing through the pipe holes.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 9, a logging packing cable is disclosed in the present embodiment, which includes a packing layer 1, a protection pipe 2, and a cable 3 sequentially disposed from outside to inside. The packaging layer 1 protects the protection tube 2, improves the corrosion resistance of the protection tube 2, has higher yield load of the protection tube 2, and improves the whole compression resistance and tensile resistance. The cross section of the packaging layer 1 is designed into a polygon, so that the contact area is increased, the logging cable is conveniently pushed to be contacted and grabbed by a machine, and the pipe cable can be better fixed on the machine.
In this embodiment, the cross section of the encapsulation layer 1 is rectangular, and the encapsulation layer 1 is made of thermoplastic vulcanized rubber TPV material. The protection tube 2 is made of 825 steel tube materials. The cable 3 is used for connecting downhole instrument equipment to transmit signals, and the cable 3 comprises an outer protective layer 301, an insulating layer 302 and a wire core 303 which are sequentially arranged from outside to inside. In this embodiment, the outer sheath 301 is made of polypropylene PP material. The insulating layer 302 is made of fluorinated ethylene propylene copolymer FEP material. The outer protective layer 301 can perform protective functions such as insulation, flame retardance, corrosion resistance, fixation and the like on the coating. The production of the cable 3 is made by a cable extruder, which belongs to conventional technical means and can be carried out well by a person skilled in the art.
As shown in fig. 2 to 3, a method for manufacturing the logging packaging cables comprises the following steps:
step one, processing and forming a protection tube and laying a cable: the method comprises the steps of placing a steel coil raw material for producing a protection tube 2 on steel belt coiling equipment, placing a coiled and rolled cable 3 on the cable coiling equipment, and processing the initial end of the steel coil raw material into a protection tube 2 provided with the cable 3 in a whole set after passing through steel tube primary forming equipment, cable coiling equipment, steel tube laser welding equipment, nondestructive inspection equipment, steel tube drawing equipment and steel tube traction equipment in sequence; the protective tube 2 is curled and rolled up under the action of the cable reeling device to be used in the next process.
The steel band is processed into the U type after preliminary former of steel pipe, and cable 3 is put into protection tube 2 through the opening of U type, need pass through a leading wheel at the in-process of putting into, and this leading wheel pushes down cable 3 and makes it be close to the bottom surface of cable protection tube 2, avoids high temperature damage cable 3 when laser welding. The steel belt, the cable and the pipe cable coiling equipment are used for placing raw materials, semi-finished products and coiling or uncoiling the materials. The laser welding device is used for welding the butt joint gap of the protection pipe 2. The welded protection tube 2 is subjected to nondestructive inspection by using the eddy current for nondestructive inspection. The drawing apparatus draws the protective tube 2 to a desired size using a die of a certain specification, and the force required for drawing is provided by a drawing wheel device. The steel pipe pulling apparatus provides a pulling force for the advance of the protection pipe 2.
After the preliminary shaping of protection tube 2, its initial end changes through the pipe diameter behind the steel pipe drawing equipment, and at this moment, equipment shut down and will put into preliminary fashioned protection tube 2 with cable 3 initial end, and manual always transfer line cable 3 forward until the initial end top of cable 3 is in protection tube 2 shrink position department, and the shrink position of protection tube 2 plays the effect of clamping cable 3, and equipment start-up this moment, cable 3 is along with the protection tube 2 forward motion of drawing.
Step two, processing the packaging layer: the protection tube 2 to be packaged is placed on a tube cable coiling device, the initial end of the protection tube 2 sequentially passes through a steel tube straightening device, a steel tube preheating device, a packaging extrusion device, a cooling device and a tube cable traction device to form a packaging layer 1, and the packaging tube cable is curled and coiled under the action of the coiling device.
The steel pipe straightening device is used for straightening the curled pipe cable into a horizontal straight line through the upper roller and the lower roller. The thermoplastic vulcanized rubber TPV material particles are heated by the encapsulation extrusion equipment, and the raw materials are melted and fused into sol after being heated to corresponding temperature, so that the thermoplastic vulcanized rubber TPV material has strong plasticity. The protective tube 2 is passed through an extrusion device to form the encapsulation layer 1. And the protection pipe 2 is encapsulated and extruded, and then enters a cold water tank for cooling, solidifying and molding. In this embodiment, the cooling water tank is a cooling device. In this example, the steel pipe preliminary molding equipment used was a stainless steel pipe machine manufactured by Guangdong Yangcheng mechanical technologies Co., ltd, and the laser welding equipment used was Shenzhen Co., ltd. The above production devices all belong to the prior art, and those skilled in the art can purchase the existing devices from the market, and are not described again.
As shown in fig. 4, the steel pipe preheating device comprises an air heater 4 and a preheating pipeline 5 which are communicated through a pipeline, plugs 6 are connected to two ends of the preheating pipeline 5 in a sealing manner, a pipe passing hole 7 is formed in the middle of each plug 6, a protection pipe 2 passes through the pipe passing hole 7, and the air heater 4 continuously blows hot air into the preheating pipeline 5 to preheat the bare-mounted protection pipe 2.
As shown in fig. 5 and 9, the encapsulation extrusion apparatus employs a wire and cable extruder, and the extrusion die employs an extrusion die. The extrusion grinding tool comprises a die sleeve and a die core which are matched for use, the die sleeve and the die core belong to the prior art, the integral structure of the extrusion grinding tool is the same as that of the extrusion grinding tool in the market, and the extrusion outlet of the die sleeve is polygonal, so that the cross section of the packaging layer 1 is polygonal after extrusion. In this embodiment, the extrusion opening of the die sleeve is rectangular. The encapsulation layer 1 may be made with a pigment added to distinguish the encapsulation cables in use. In order to further complement and optimize the manufacturing method, the steel coil raw material for producing the protection tube 2 is subjected to alkaline hot water degreasing treatment so as to remove impurities on the surface of the steel belt.
In this embodiment, the technical parameters of the specific model of the encapsulation cable are shown in table 1.
Table 1 table for parameters of the packaging cables
Setting production parameters:
(1) Production parameters of step one
The steel belt unwinding speed is 0.8-1.2 m/min. The cable unwinding speed is 0.8-1.2 m/min. The parameters of the laser welding equipment are that the external protection air flow is 6-10L/min (Ar), the internal protection air flow is 2-4L/min (Ar), the power is 800+/-200W, the welding speed is 0.8-1.2 m/min, and the focal length is 223mm.
(2) Production parameters of step two
The belt unwinding speed of the pipe cable crimping device is 0.8-1.2 m/min. The speed of the cable pulling device is consistent with the belt releasing speed of the cable crimping device. The temperature of the steel pipe preheating device was set to 300 ℃.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (8)
1. A logging packaging cable, characterized by: comprises an encapsulation layer (1), a protection tube (2) and a cable (3) which are sequentially arranged from outside to inside; the cross section of the packaging layer (1) is polygonal;
the method for logging and sealing the cable comprises the following steps:
step one, processing and forming a protection tube and laying a cable: the method comprises the steps of placing a steel coil raw material for producing the protection tube (2) on steel belt coiling equipment, placing a coiled cable (3) on the cable coiling equipment, and processing the initial end of the steel coil raw material into the protection tube (2) provided with the cable (3) in a whole set after passing through steel tube primary forming equipment, cable coiling equipment, steel tube laser welding equipment, nondestructive inspection equipment, steel tube drawing equipment and traction equipment in sequence;
the steel belt is processed into a U shape after passing through steel pipe preliminary forming equipment, the cable (3) is put into the protection pipe (2) through a U-shaped opening, a guide wheel is needed to pass through in the putting process, and the guide wheel presses down the cable (3) to enable the cable to be close to the bottom surface of the protection pipe (2), so that the cable (3) is prevented from being damaged at high temperature during laser welding;
the protection tube (2) is curled and rolled under the action of a tube cable coiling device to be used in the next working procedure;
step two, processing the packaging layer: the protection tube (2) to be packaged is placed on a tube cable coiling device, and the starting end of the protection tube (2) sequentially passes through a steel tube straightening device, a steel tube preheating device, a packaging extrusion device, a cooling device and a traction device to form the packaging layer (1); the packaging pipe is curled and rolled under the action of the coiling equipment;
the steel pipe preheating device comprises an air heater (4) and a preheating pipeline (5) which are communicated through a pipeline, plugs (6) are connected to the two ends of the preheating pipeline (5) in a sealing mode, and pipe passing holes (7) are formed in the middle of the plugs (6).
2. The logging packaging cable of claim 1, wherein: the packaging layer (1) is made of thermoplastic vulcanized rubber (TPV) materials.
3. The logging packaging cable of claim 1, wherein: the protection tube (2) is made of 825 steel tube materials.
4. The logging packaging cable of claim 1, wherein: the cable (3) comprises an outer protective layer (301), an insulating layer (302) and a wire core (303) which are sequentially arranged from outside to inside.
5. The logging packaging cable of claim 4, wherein: the outer protective layer (301) is made of polypropylene (PP) material.
6. The logging packaging cable of claim 4, wherein: the insulating layer (302) is made of fluorinated ethylene propylene copolymer (FEP) material.
7. The logging packaging cable of claim 1, wherein: the steel coil raw material for producing the protection tube (2) is degreased by alkaline hot water.
8. The logging packaging cable of claim 1, wherein: the die sleeve extrusion port of the encapsulation extrusion device for producing the encapsulation layer (1) is arranged in a polygonal shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924753.4A CN110544559B (en) | 2019-09-27 | 2019-09-27 | Logging packaging cable and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924753.4A CN110544559B (en) | 2019-09-27 | 2019-09-27 | Logging packaging cable and preparation method thereof |
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| Publication Number | Publication Date |
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| CN110544559A CN110544559A (en) | 2019-12-06 |
| CN110544559B true CN110544559B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910924753.4A Active CN110544559B (en) | 2019-09-27 | 2019-09-27 | Logging packaging cable and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111399153A (en) * | 2020-05-12 | 2020-07-10 | 信达科创（唐山）石油设备有限公司 | Logging packaged optical fiber pipe cable and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516552A (en) * | 2017-08-30 | 2017-12-26 | 中天科技装备电缆有限公司 | A kind of wear-resisting resistance to torsion environment-friendly type cable for charging electric automobiles and its preparation technology |
| CN108172329A (en) * | 2017-12-22 | 2018-06-15 | 江苏中天科技股份有限公司 | A kind of oil well detection cable and its manufacturing method |
| CN208637203U (en) * | 2018-07-24 | 2019-03-22 | 苏州道旺电子科技有限公司 | A kind of big section power transmission spring cable |
| CN210200369U (en) * | 2019-09-27 | 2020-03-27 | 信达科创（唐山）石油设备有限公司 | Well logging packaging pipe cable |
-
2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516552A (en) * | 2017-08-30 | 2017-12-26 | 中天科技装备电缆有限公司 | A kind of wear-resisting resistance to torsion environment-friendly type cable for charging electric automobiles and its preparation technology |
| CN108172329A (en) * | 2017-12-22 | 2018-06-15 | 江苏中天科技股份有限公司 | A kind of oil well detection cable and its manufacturing method |
| CN208637203U (en) * | 2018-07-24 | 2019-03-22 | 苏州道旺电子科技有限公司 | A kind of big section power transmission spring cable |
| CN210200369U (en) * | 2019-09-27 | 2020-03-27 | 信达科创（唐山）石油设备有限公司 | Well logging packaging pipe cable |
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| CN110544559A (en) | 2019-12-06 |
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