Flat packaging pipe cable with internal structure supported by thermoplastic material

Abstract

The invention relates to the field of petroleum engineering, in particular to a flat packaging pipe cable with an internal structure supported by a thermoplastic material, which comprises a packaging layer, a pipe cable is arranged in the packaging layer, and filling strips playing a supporting role are arranged on two sides in the packaging layer. The filling part guarantees the size of the outer packaging layer in the extrusion molding process, the edge of the packaging layer is prevented from collapsing, the structure is stable, and large-length production can be carried out.

Description

Technical Field

[0001] The invention relates to the field of petroleum engineering, and in particular to a flat packaged cable with internal structure supported by thermoplastic material. Background Art

[0002] Logging cables can be used for logging, perforating, coring and other operations in various oil and gas wells. They can also be used in water conservancy and hydrological surveys, coalfield geological exploration, geothermal logging, etc. They are connecting lines between ground systems and underground instruments as load-bearing connections and for transmitting measurement data.

[0003] Existing flat packaging cables are limited by the outer diameter of the internal pipeline. The size of the packaging layer can only be increased by 2 to 3 mm based on the internal pipeline size. Further increasing the extrusion amount of the packaging layer will cause the packaging layer to collapse. Summary of the invention

[0004] Based on the above problems, the purpose of the present invention is to provide a flat packaged cable with internal structure supported by thermoplastic material. The present invention adopts the following technical solutions:

[0005] The present invention provides a flat packaged tube cable with internal structure supported by thermoplastic material, comprising a packaging layer, in which the tube cable is arranged, and filling strips for supporting are arranged at both sides of the packaging layer.

[0006] Preferably, a wire core is provided in the filling strip.

[0007] Preferably, the core is a rope or a narrow band.

[0008] Preferably, there are a plurality of filling strips, and the filling strips are arranged in sequence from the middle to the edge in the packaging layer, and the outer diameters thereof are gradually reduced.

[0009] Preferably, the filling strip has a cylindrical cross section.

[0010] Preferably, the encapsulation layer is trapezoidal.

[0011] Preferably, the pipe cable comprises an armor layer and a cable arranged in the armor layer.

[0012] Preferably, an oil pipe is also provided in the packaging layer.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are:

[0014] The filling part of the present invention ensures the size of the outer packaging layer during the extrusion process and avoids the edge of the packaging layer from collapsing. The present invention has a stable structure and can be produced in a large length. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the end surface structure of the flat packaged cable with internal structure supported by thermoplastic material according to the present invention;

[0017] Figure 2 It is a schematic diagram of the end structure of the line paralleling sleeve of the present invention.

[0018] Explanation of the reference numerals: 1. packaging layer; 2. cable tube; 201. armor layer; 202. cable; 3. filling strip; 301. wire core; 4. oil pipe; 5. paralleling sleeve. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1 As shown, this embodiment discloses a flat encapsulated tube cable with internal structure supported by thermoplastic material, including an encapsulation layer 1, and the encapsulation layer 1 can be made of thermoplastic materials such as TPV, PP, FEP or PVDF. Filling strips 3 for supporting are arranged on both sides of the encapsulation layer 1. The material of the filling strip 3 can be the same as that of the encapsulation layer 1, or different. The filling strip 3 increases the size of the encapsulated tube cable structure without affecting the original function of the encapsulated tube cable, and supports the edge position of the encapsulation layer 1 at the same time.

[0021] In this embodiment, a core 301 is provided in the filling strip 3, and the core 301 is a rope or a narrow band. The core 301 increases the stability of the filling strip 3 during extrusion and increases the tensile strength of the filling strip 3; at the same time, by pulling the core 301 outward, the core 301 can also tear the external packaging layer 1.

[0022] There are multiple filling strips 3 , and the filling strips 3 are arranged in sequence from the middle to the edge in the packaging layer 1 , and the outer diameters thereof are gradually reduced.

[0023] In this embodiment, the encapsulation layer 1 is trapezoidal, and the size of the filling strips 3 located at the side of the encapsulation layer 1 is smaller than the size of the filling strips 3 located at the inner side.

[0024] In this embodiment, the encapsulation layer 1 is provided with a pipe cable 2 and an oil pipe 4. The pipe cable 2 includes an armor layer 201 and a cable 202 arranged in the armor layer 201. The oil pipe 4 and the armor layer 201 can be made of stainless steel or alloy steel by cladding and welding.

[0025] The processing of the present invention is as follows:

[0026] First, the filling strip 3 is extruded. After the wire core 301 is released from the tensioned wire rack, a suitable tensioning force is applied by the tension wheel. After being dried in a preheating furnace to remove moisture, the wire core 301 is coated with molten plastic and shaped by an outer mold. The wire core 301 is first cooled with warm water above 40°C to effectively reduce the internal stress of the molten plastic and the risk of cracking during use. After being cooled in a cold water tank at normal temperature, the wire core 301 enters the traction machine, which provides a suitable driving force and controls the outer diameter of the filling strip 3 by the traction speed, thereby finally forming a cylindrical filling with a rope in the middle.

[0027] Then, the encapsulation layer 1 is extruded, and the pipe cable 2, oil pipe 4 and filling strip 3 are paid out by the pay-off rack and straightened by the straightening rack and enter the paralleling sleeve 5 (the paralleling sleeve 5 is provided with a guide hole for the pipe cable 2, oil pipe 4 and filling strip 3 to pass through). After being constrained and corrected by the paralleling sleeve 5, they enter the preheating furnace. The preheating furnace can not only evaporate the surface of the pipe cable and the cylindrical filling, but also increase its surface temperature to increase the covering force of the second layer of packaging and reduce the possibility of looseness. After preheating, the pipe cable 2, oil pipe 4 and filling strip 3 enter the extruder head. The molten plastic is coated on the pipe cable 2, oil pipe 4 and filling strip 3 in an extrusion molding manner. First, it is cooled by warm water above 40°C to effectively reduce the internal stress of the molten plastic and reduce the risk of cracking during use. After cooling in a normal temperature cold water tank, it enters the traction machine. The traction machine provides a suitable driving force and controls the outer diameter of the flat package by the size of the traction speed.

[0028] The main protection object of the present invention is the control of the trapezoidal structure. Due to the fact that non-metallic materials are very soft under high temperature conditions, the encapsulation layer should not be too thick without support. When the thickness exceeds 2mm, it is very easy to collapse. The cylindrical filling strip 3 effectively supports the soft encapsulation layer during the extrusion process, and at the same time reduces the distance from the main structure inside the encapsulation layer to the outer surface of the encapsulation. When designing the mold, the length of the sizing zone for encapsulation shaping is increased from 10mm for normal extrusion to 16mm, which not only reduces the molding difficulty of the trapezoidal encapsulation, but also makes it dimensionally stable. Since thermoplastics are used for filling and the filling sizes are not the same, when there are many internal pipelines, the internal pipelines of different sizes and different hardness will be uneven and inconsistent, so before entering the head, it is necessary to use a parallel wire sleeve 5 to fix it so that the internal pipelines can smoothly enter the head for encapsulation and coating. Finally, the product of the present invention is formed.

[0029] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A flat packaged cable with internal structure supported by thermoplastic material, comprising a packaging layer (1), wherein a cable (2) is arranged in the packaging layer (1), characterized in that: Filling strips (3) for supporting are arranged at both sides of the packaging layer (1).

2. The flat packaged tube cable with internal structural support made of thermoplastic material according to claim 1, characterized in that: A wire core (301) is arranged in the filling strip (3).

3. The flat packaged cable with internal structural support made of thermoplastic material according to claim 2, characterized in that: The wire core (301) is a rope or a narrow band.

4. The flat packaged cable with internal structural support made of thermoplastic material according to claim 1, characterized in that: The number of the filling strips (3) is plural, and the filling strips (3) are arranged in sequence from the middle to the edge in the packaging layer (1), and the outer diameters are gradually reduced.

5. The flat packaged cable with internal structural support made of thermoplastic material according to claim 1, characterized in that: The cross section of the filling strip (3) is cylindrical.

6. The flat packaged umbilical cable with internal structural support made of thermoplastic material according to claim 1, characterized in that: The packaging layer (1) is in a trapezoidal shape.

7. The flat packaged cable with internal structural support made of thermoplastic material according to claim 1, characterized in that: The umbilical cable (2) comprises an armor layer (201) and a cable (202) arranged in the armor layer (201).

8. The flat packaged cable with internal structural support made of thermoplastic material according to claim 1, characterized in that: An oil pipe (4) is also provided in the packaging layer (1).

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