Comprehensive digital logging cable with multilayer isolation structure

Abstract

The utility model relates to the technical field of integrated digital logging cables, in particular to an integrated digital logging cable with a multi-layer isolation structure, which comprises a soft copper stranded wire, a fluoroplastic F46 insulating silicon rubber sheath, a semi-conductive filler and a semi-conductive wrapping tape, the inner side of the semi-conductive wrapping tape is provided with a soft copper stranded wire used for communication. The fluoroplastic F46 insulating silicone rubber sheath is used for protecting and insulating the soft copper stranded wire, and the semiconductive filling material is used for forming uniform electric field distribution between the fluoroplastic F46 insulating silicone rubber sheath and the semiconductive wrapping tape of the cable to protect the fluoroplastic F46 insulating silicone rubber sheath from being damaged by the electric field. The sealing performance of the connection between the steel wires is ensured, and the overall weight of the cable can be reduced by reducing the density of the armored steel wires at the outer side, so that the strength of the cable is ensured, the requirement of the cable for improving the power of equipment can be met when the cable enters a well, and the convenience of the operation in the well can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated digital logging cables, in particular to an integrated digital logging cable with a multi-layer isolation structure. Background Art

[0002] The integrated digital logging cable with a multi-layer isolation structure can be used to transmit logging signals. The signal conductor can be used to transmit logging signals. The shielding layer can be used to prevent electromagnetic interference. The sheath can be used to protect the cable.

[0003] In order to improve the overall strength of the existing integrated digital logging cable with a multi-layer isolation structure, steel wires are wrapped on the outside to improve the overall strength of the cable and protect the inside of the cable. However, in order to ensure the sealing between the steel wires, the density between the steel wires needs to be increased, resulting in a high overall cost and weight of the cable, and greater requirements and operations for entering the well. Therefore, in order to solve the above problems, a comprehensive digital logging cable with a multi-layer isolation structure is proposed. Utility Model Content

[0004] The utility model aims to provide a comprehensive digital logging cable with a multi-layer isolation structure to solve the problems of the existing comprehensive digital logging cable with a multi-layer isolation structure. In order to improve the overall strength of the cable, steel wires are wrapped on the outside to improve the overall strength of the cable and protect the inside of the cable. However, the outer armor composed of steel wires needs to increase the density between the steel wires in order to ensure the sealing between the steel wires, resulting in a higher overall cost and weight of the cable, and greater requirements and operations for the cable to enter the well.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A comprehensive digital logging cable with a multi-layer isolation structure, comprising a soft copper stranded wire, a fluoroplastic F46 insulating silicone rubber sheath, a semi-conductive filler and a semi-conductive wrapping tape, wherein the inner side of the semi-conductive wrapping tape is provided with a soft copper stranded wire for communication, a fluoroplastic F46 insulating silicone rubber sheath for protecting and insulating the soft copper stranded wire, and a semi-conductive filler for forming a uniform electric field distribution between the fluoroplastic F46 insulating silicone rubber sheath of the cable and the semi-conductive wrapping tape to protect the fluoroplastic F46 insulating silicone rubber sheath from being damaged by the electric field, the fluoroplastic F46 insulating silicone rubber sheaths arranged on the inner side of the semi-conductive filler are in close contact with each other, the soft copper stranded wires arranged on the inner side of the fluoroplastic F46 insulating silicone rubber sheath are in close contact with the inner wall of the fluoroplastic F46 insulating silicone rubber sheath, the outer side of the semi-conductive wrapping tape is wound with an inner layer of armored steel wires, the outer side of the inner layer of armored steel wires is wound with an outer layer of armored steel wires, and a sealing structure is arranged between the outer layer of armored steel wires;

[0007] The sealing structure comprises a sealing plastic strip, both sides of which are provided with fitting grooves, the outer side of the sealing plastic strip is provided with a smooth surface, and the inner side of the sealing plastic strip is provided with a filling surface.

[0008] Preferably, the inner side of the inner armored steel wire is in close contact with the outer wall of the semi-conductive wrapping tape, the outer side of the inner armored steel wire is in close contact with the outer armored steel wire and the filling surface, and a plurality of inner armored steel wires and outer armored steel wires are provided.

[0009] Preferably, the sealing plastic strips are provided in plurality, and any one of the sealing plastic strips is provided with two fitting pressing grooves, and the cross section of any one of the fitting pressing grooves is C-shaped.

[0010] Preferably, the diameter of the cross section of the inner layer armor steel wire is half of the diameter of the cross section of the outer layer armor steel wire, and the number of the inner layer armor steel wire is equal to the number of the outer layer armor steel wire.

[0011] Preferably, a copper foil layer is provided inside the semi-conductive wrapping tape, and the cross-section of the semi-conductive wrapping tape, inner armored steel wire, outer armored steel wire, and sealing plastic strip is 1.2 times the cross-section of the soft copper stranded wire, fluoroplastic F46 insulating silicone rubber sheath, and semi-conductive filler.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the sealing mechanism provided can be used to fill the connection position of the outer armored steel wire to ensure the sealing of the connection between the steel wires. At the same time, by reducing the density of the outer armored steel wire, the overall weight of the cable can be reduced. Therefore, while ensuring the strength of the cable, the power requirement of the lifting equipment for entering the well can be reduced, and the convenience of the operation of entering the well can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the sealing structure of the utility model.

[0016] In the figure: 1. Soft copper stranded wire; 2. Fluoroplastic F46 insulated silicone rubber sheath; 3. Semi-conductive filler; 4. Semi-conductive wrapping tape; 5. Inner armored steel wire; 6. Outer armored steel wire; 7. Sealing structure; 71. Sealing plastic strip; 72. Fitting groove; 73. Smooth surface; 74. Filling surface. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0019] See also Figure 1-2 , the utility model provides a technical solution:

[0020] A multi-layer isolation structure integrated digital logging cable, comprising a soft copper stranded wire 1, a fluoroplastic F46 insulating silicone rubber sheath 2, a semi-conductive filler 3 and a semi-conductive wrapping tape 4, wherein the inside of the semi-conductive wrapping tape 4 is provided with a soft copper stranded wire 1 for communication, a fluoroplastic F46 insulating silicone rubber sheath 2 for protecting and insulating the soft copper stranded wire 1, and a semi-conductive filler 3 for forming a uniform electric field distribution between the fluoroplastic F46 insulating silicone rubber sheath 2 and the semi-conductive wrapping tape 4 of the cable to protect the fluoroplastic F46 insulating silicone rubber sheath 2 from being damaged by the electric field, wherein the semi-conductive filler 3 is provided inside the semi-conductive filler 3. The fluoroplastic F46 insulating silicone rubber sheath 2 arranged on the side is in close contact with the soft copper stranded wire 1 arranged on the inner side of the fluoroplastic F46 insulating silicone rubber sheath 2 and is in close contact with the inner wall of the fluoroplastic F46 insulating silicone rubber sheath 2. An inner armor steel wire 5 is wound around the outer side of the semi-conductive wrapping tape 4, an outer armor steel wire 6 is wound around the outer side of the inner armor steel wire 5, and a sealing structure 7 is arranged between the outer armor steel wires 6; the sealing structure 7 comprises a sealing plastic strip 71, fitting grooves 72 are provided on both sides of the sealing plastic strip 71, a smooth surface 73 is provided on the outer side of the sealing plastic strip 71, and a filling surface 74 is provided on the inner side of the sealing plastic strip 71.

[0021] As a further implementation of this solution, the inner side of the inner armored steel wire 5 is in close contact with the outer wall of the semi-conductive wrapping tape 4, and the outer side of the inner armored steel wire 5 is in close contact with the outer armored steel wire 6 and the filling surface 74. The inner armored steel wire 5 and the outer armored steel wire 6 are both provided with a plurality of wires. Through the above arrangement, the stability of the overall structure of the cable can be further improved.

[0022] As a further implementation of this solution, a plurality of sealing plastic strips 71 are provided, and two fitting grooves 72 are provided on any sealing plastic strip 71, and the cross section of any fitting groove 72 is C-shaped. Through the above arrangement, the sealing of the gaps between the outer armored steel wires 6 can be ensured;

[0023] As a further implementation scheme of the present scheme, the diameter of the cross section of the inner armored steel wire 5 is half the diameter of the cross section of the outer armored steel wire 6, and the number of the inner armored steel wires 5 is equal to the number of the outer armored steel wires 6; a copper foil layer is provided inside the semi-conductive wrapping tape 4, and the cross section of the semi-conductive wrapping tape 4, the inner armored steel wire 5, the outer armored steel wire 6, and the sealing plastic strip 71 is 1.2 times the cross section of the soft copper stranded wire 1, the fluoroplastic F46 insulating silicone rubber sheath 2, and the semi-conductive filler 3. Through the above arrangement, the overall strength of the cable is further improved.

[0024] Workflow: In the process of producing the integrated digital logging cable with a multi-layer isolation structure, the semi-conductive filler 3 is filled inside the semi-conductive wrapping tape 4 to position the fluoroplastic F46 insulating silicone rubber sheath 2, thereby positioning and protecting the soft copper stranded wire 1, and then the inner armored steel wire 5 and the outer armored steel wire 6 are wound around the outer side of the semi-conductive wrapping tape 4. During the winding process of the outer armored steel wire 6, the sealing plastic strip 71 can seal the gap between the outer armored steel wires 6, and at the same time, by occupying the gap between the outer armored steel wires 6, the overall quality of the outer armored steel wires 6 can be reduced, while ensuring that the outer armored steel wires 6 have the strength required to support the overall strength of the cable, the overall quality of the cable can be reduced;

[0025] After production is completed, in actual use, it can be prevented that after the cable enters the well, the oil and water inside the cable enter the outer armored steel wire 6, causing the overall quality of the cable to increase and affecting the overall strength of the cable.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A digital logging cable with a multi-layer isolation structure, comprising a soft copper strand (1), a fluoroplastic F46 insulating silicone rubber sheath (2), a semi-conductive filler (3) and a semi-conductive wrapping tape (4), characterized in that: The inner side of the semi-conductive wrapping tape (4) is provided with a soft copper stranded wire (1) for communication, a fluoroplastic F46 insulating silicone rubber sheath (2) for protecting and insulating the soft copper stranded wire (1), and a semi-conductive filler (3) for forming a uniform electric field distribution between the fluoroplastic F46 insulating silicone rubber sheath (2) of the cable and the semi-conductive wrapping tape (4) to protect the fluoroplastic F46 insulating silicone rubber sheath (2) from being damaged by the electric field. The fluoroplastic F46 insulating silicone rubber sheath (2) arranged on the inner side of the semi-conductive filler (3) is in close contact with each other. The soft copper stranded wire (1) arranged on the inner side of the fluoroplastic F46 insulating silicone rubber sheath (2) is in close contact with the inner wall of the fluoroplastic F46 insulating silicone rubber sheath (2). The outer side of the semi-conductive wrapping tape (4) is wound with an inner layer of armored steel wire (5), and the outer side of the inner layer of armored steel wire (5) is wound with an outer layer of armored steel wire (6). A sealing structure (7) is provided between the outer layer of armored steel wire (6). The sealing structure (7) comprises a sealing plastic strip (71), the sealing plastic strip (71) having fitting grooves (72) on both sides, a smooth surface (73) on the outside of the sealing plastic strip (71), and a filling surface (74) on the inside of the sealing plastic strip (71).

2. The integrated digital logging cable with a multi-layer isolation structure according to claim 1, characterized in that: The inner side of the inner armored steel wire (5) is in close contact with the outer wall of the semi-conductive wrapping tape (4), and the outer side of the inner armored steel wire (5) is in close contact with the outer armored steel wire (6) and the filling surface (74). A plurality of inner armored steel wires (5) and outer armored steel wires (6) are provided.

3. The integrated digital logging cable with a multi-layer isolation structure according to claim 1, characterized in that: There are a plurality of sealing plastic strips (71), and two fitting pressing grooves (72) are provided on any one of the sealing plastic strips (71). The cross section of any one of the fitting pressing grooves (72) is C-shaped.

4. The integrated digital logging cable with a multi-layer isolation structure according to claim 1, characterized in that: The diameter of the cross section of the inner layer armored steel wire (5) is half the diameter of the cross section of the outer layer armored steel wire (6), and the number of the inner layer armored steel wire (5) is equal to the number of the outer layer armored steel wire (6).

5. The integrated digital logging cable with a multi-layer isolation structure according to claim 1, characterized in that: A copper foil layer is provided inside the semi-conductive wrapping tape (4), and the cross-sections of the semi-conductive wrapping tape (4), the inner armored steel wire (5), the outer armored steel wire (6), and the sealing plastic strip (71) are 1.2 times the cross-sections of the soft copper stranded wire (1), the fluoroplastic F46 insulating silicone rubber sheath (2), and the semi-conductive filler (3).

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