High-temperature and high-pressure resistant oil-submerged pump cable

Abstract

The utility model discloses a high temperature and high pressure resistant oil-submerged pump cable, which comprises a sheath internally provided with signal cables, the sheath comprises an outer protective layer and a lightweight armor layer which are arranged from outside to inside, the outer protective layer is made of silicon rubber, a filling layer is arranged between the sheath and the signal cables, a steel wire rope is arranged between the adjacent signal cables, and the light armor layer is made of silicon rubber. A waterproof layer is arranged between the filling layer and the sheath. According to the utility model, by arranging the outer protective layer and the light-weight armor layer, the sheath can be effectively prevented from being embrittled and damaged in a low-temperature environment, and by utilizing the light-weight armor layer, not only can the mechanical strength of the cable and the high-temperature resistance, high-pressure resistance and corrosion resistance of the cable be improved, but also the weight of the sheath can be effectively reduced, and the transportation and construction difficulty can be reduced; and the inner protective layer is arranged, so that the cable not only has chemical stability, corrosion resistance and insulativity, but also has relatively high toughness, wear resistance and chemical erosion resistance, and the bending resistance of the cable is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a high-temperature and high-pressure submersible pump cable. Background Technology

[0002] In oil and gas exploration and extraction, submersible pumps (SMPs) are crucial equipment, typically operating in underground reservoirs or seabed environments. Therefore, SMP cables must also adapt to these working environments. Existing patent (publication number: CN206976055U) discloses an enhanced SMP cable. This invention, through the use of a fluororubber sheath, resists corrosion from formation media, especially hydrogen sulfide, and possesses excellent high-temperature and high-pressure resistance. However, in practical applications, when SMPs are used in deep-sea extraction projects, they need to operate at depths below the seabed. While the fluororubber sheath has good high-temperature and high-pressure resistance, its cold resistance is poor. In deep-sea environments with average temperatures below 5 degrees Celsius, the fluororubber sheath becomes brittle, reducing its strength and making it prone to breakage, thus compromising the cable's integrity. Therefore, we propose a high-temperature and high-pressure resistant SMP cable. Utility Model Content

[0003] To solve the above problems, this utility model provides a high-temperature and high-pressure resistant submersible pump cable.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The design includes a high-temperature and high-pressure submersible pump cable, comprising a sheath containing a signal cable. The sheath includes an outer protective layer and a lightweight armor layer arranged from the outside to the inside. The outer protective layer is made of silicone rubber. A filler layer is provided between the sheath and the signal cable. A steel wire rope is provided between adjacent signal cables. A water-blocking layer is provided between the filler layer and the sheath.

[0006] In the above scheme, the lightweight armor layer is set as a metal and plastic woven layer.

[0007] In the above scheme, the lightweight armor layer is a nylon steel wire braided layer.

[0008] In the above scheme, the wire rope includes multiple strands of thin steel wire rope twisted together, and the thin steel wire rope is provided with a rope sleeve.

[0009] In the above scheme, the sheath also includes an inner protective layer located inside the lightweight armor layer, and the inner protective layer is a fluoropolymer and nylon braided layer.

[0010] In the above scheme, the signal cable includes a conductor, and an insulation layer, a shielding layer and a waterproof sleeve are sequentially provided on the outside of the conductor.

[0011] In the above scheme, the insulating layer is EPDM rubber, and the waterproof sleeve is nitrile rubber.

[0012] The advantages and beneficial effects of this utility model are as follows: By setting an outer protective layer and a lightweight armor layer, and by making the outer protective layer silicone rubber, the sheath not only has high temperature resistance and maintains stable electrical performance in high temperature environments, but also low temperature resistance and maintains good mechanical properties in low temperature environments, preventing the outer protective layer from becoming brittle in low temperature environments. Compared with the prior art, it can effectively avoid the sheath from becoming brittle and broken in low temperature environments, protecting the integrity of the cable. In addition, the use of a lightweight armor layer can not only improve the mechanical strength of the cable and its high temperature resistance, high pressure resistance and corrosion resistance, but also effectively reduce the weight of the sheath, reduce the difficulty of transportation and construction, and improve practicality. By setting an inner protective layer, which is made of fluoropolymer and nylon braided layer, it not only has the excellent chemical stability, corrosion resistance and insulation of fluoropolymer, but also the high toughness, wear resistance and chemical corrosion resistance of nylon, enhancing the cable's bending resistance. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the high-temperature and high-pressure submersible pump cable proposed in this utility model;

[0015] Figure 2 This is a cross-sectional view of the high-temperature and high-pressure submersible pump cable proposed in this utility model.

[0016] Figure 3 This is a schematic diagram of the steel wire rope structure of the high-temperature and high-pressure submersible pump cable proposed in this utility model.

[0017] In the diagram: sheath 1, outer protective layer 101, lightweight armor layer 102, inner protective layer 103, water-blocking layer 2, signal cable 3, conductor 31, insulation layer 32, shielding layer 33, waterproof sleeve 34, steel wire rope 4, rope loop 41, steel wire rope 42, filling layer 5. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] Please see Figure 1-3This utility model provides a technical solution: a high-temperature and high-pressure submersible pump cable, including a sheath 1 with a signal cable 3 inside;

[0020] Furthermore, the signal cable 3 includes a conductor 31, and an insulation layer 32, a shielding layer 33, and a waterproof sleeve 34 are sequentially provided outside the conductor 31;

[0021] Furthermore, the insulation layer 32 is made of EPDM rubber, which has excellent ozone resistance, heat resistance, weather resistance and other aging resistance properties, enabling it to operate stably in complex and harsh environments for a long time. It also has excellent insulation properties, which can effectively isolate the conductors in the wire and cable and ensure stable current transmission. The waterproof sleeve 34 is made of nitrile rubber, which has good waterproof and corrosion resistance properties, which not only keeps it stable but also makes it suitable for deep-sea operations. In addition, it has heat resistance, wear resistance and electrical insulation properties, which can ensure the stable operation of the cable.

[0022] Sheath 1 includes an outer protective layer 101 and a lightweight armor layer 102 arranged from the outside to the inside;

[0023] Furthermore, the lightweight armor layer 102 is designed as a metal and plastic woven layer; the weight of the lightweight armor layer 102 is reduced from the perspective of material composition.

[0024] Furthermore, the lightweight armor layer 102 is a nylon steel wire braided layer; it has higher wear resistance, corrosion resistance, high strength, and toughness.

[0025] The outer protective layer 101 is made of silicone rubber, which has excellent heat resistance and cold resistance.

[0026] Specifically, by setting an outer protective layer 101 and a lightweight armor layer 102, and by making the outer protective layer 101 silicone rubber, the sheath 1 not only has high-temperature resistance and maintains stable electrical performance in high-temperature environments, but also low-temperature resistance and maintains good mechanical properties in low-temperature environments, preventing the outer protective layer 101 from becoming brittle in low-temperature environments. Compared with existing technologies, this can effectively prevent the sheath 1 from becoming brittle and broken in low-temperature environments, protecting the integrity of the cable. In addition, the use of the lightweight armor layer 102 can not only improve the mechanical strength of the cable and its high-temperature resistance, high-pressure resistance and corrosion resistance, but also effectively reduce the weight of the sheath 1, reduce the difficulty of transportation and construction, and improve practicality.

[0027] A filler layer 5 is provided between the sheath 1 and the signal cable 3. The filler layer 5 is also made of EPDM rubber. A steel wire rope 4 is provided between adjacent signal cables 3 to increase the breaking load of the cable. A water-blocking layer 2 is provided between the filler layer 5 and the sheath 1.

[0028] Furthermore, the wire rope 4 includes multiple strands of thin steel wire rope 42 twisted together, and the thin steel wire rope 42 is provided with a rope sleeve 41;

[0029] Furthermore, the sheath 1 also includes an inner protective layer 103 located inside the lightweight armor layer 102. The inner protective layer 103 is configured as a fluoropolymer and nylon braided layer, so that the protective layer 103 forms a mesh structure.

[0030] Specifically, by setting the inner protective layer 103, which is a braided layer of fluoropolymer and nylon, it not only has the excellent chemical stability, corrosion resistance and insulation of fluoropolymer, but also the high toughness, wear resistance and chemical corrosion resistance of nylon, thus enhancing the cable's bending resistance.

[0031] Working principle:

[0032] By setting an outer protective layer 101 and a lightweight armor layer 102, and by making the outer protective layer 101 silicone rubber, the sheath 1 not only has high-temperature resistance and maintains stable electrical performance in high-temperature environments, but also low-temperature resistance and maintains good mechanical properties in low-temperature environments. This prevents the outer protective layer 101 from becoming brittle in low-temperature environments, effectively avoiding embrittlement and damage to the sheath 1 in low-temperature environments and protecting the integrity of the cable. In addition, the use of the lightweight armor layer 102 not only improves the mechanical strength of the cable and its high-temperature resistance, high-pressure resistance, and corrosion resistance, but also effectively reduces the weight of the sheath 1, reducing the difficulty of transportation and construction, and improving practicality.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high temperature and high pressure resistant electric submersible pump cable comprising a sheath (1) in which a signal cable (3) is arranged, characterized in that, The sheath (1) comprises an outer protective layer (101) and a lightweight armor layer (102) arranged from outside to inside, the outer protective layer (101) is silicone rubber, a filling layer (5) is arranged between the sheath (1) and the signal cable (3), a steel wire rope (4) is arranged between adjacent signal cables (3), a water blocking layer (2) is arranged between the filling layer (5) and the sheath (1).

2. The high temperature and high pressure resistant electric submersible pump cable of claim 1, wherein, The lightweight armor layer (102) is arranged as a metal and plastic woven layer.

3. The high temperature and high pressure resistant electric submersible pump cable of claim 2, wherein, The lightweight armor layer (102) is a nylon steel wire woven layer.

4. The high temperature and high pressure resistant electric submersible pump cable of claim 1, wherein, The steel wire rope (4) comprises a plurality of steel wire strands (42) twisted with each other, and a rope sleeve (41) is arranged outside the steel wire strands (42).

5. The high temperature and high pressure resistant electric submersible pump cable of claim 1, wherein, The sheath (1) further comprises an inner protective layer (103) arranged inside the lightweight armor layer (102), and the inner protective layer (103) is arranged as a fluoropolymer and nylon woven layer.

6. The high temperature and high pressure resistant electric submersible pump cable of claim 1, wherein, The signal cable (3) comprises a conductor (31), and the conductor (31) is sequentially provided with an insulation layer (32), a shielding layer (33) and a waterproof sleeve (34) from outside.

7. The high temperature and high pressure resistant electric submersible pump cable of claim 6, wherein, The insulation layer (32) is a ternary ethylene-propylene rubber, and the waterproof sleeve (34) is a butyronitrile rubber.

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