WO2019210692A1

WO2019210692A1 - Solid streamer for marine seismic exploration

Info

Publication number: WO2019210692A1
Application number: PCT/CN2018/121693
Authority: WO
Inventors: 高骏; 隋明辉; 苑国梁
Original assignee: Gao Jun
Priority date: 2018-05-04
Filing date: 2018-12-18
Publication date: 2019-11-07
Also published as: CN108711465A

Abstract

Disclosed in the present invention is a solid streamer for marine seismic exploration, comprising a main cable, hydrophones, buoyancy sleeves, and an outer sheath. The hydrophones are fixedly disposed on the main cable at equal intervals. The hydrophones are electrically connected to corresponding cable cores in the main cable. The buoyancy sleeves are made of foamed polyethylene material which is extruded on the main cable. The buoyancy sleeves are fixedly disposed on the main cable at equal intervals and between two adjacent hydrophones. The outer sheath is made of thermoplastic polyurethane elastic rubber material, extruded on the exteriors of the hydrophones, positioning end and buoyancy sleeves, and seamlessly bonded to the hydrophones tightly.

Description

Solid streamer for marine seismic exploration

Technical field

The invention relates to the technical field of power cables, in particular to a solid streamer for use in a marine seismic exploration system.

Background technique

With the increase of the Earth's population and the improvement of the quality of human life, more natural resources are needed to meet the needs of human production and living, which leads to the overexploitation of land resources, the energy crisis has become increasingly prominent, and the energy problem has become twenty. One of the core issues of the first century. The ocean covers two-thirds of the Earth's area, which contains a large amount of solid mineral resources and petroleum resources. It will be the largest resource provider for human survival and development. The grim survival situation forces mankind to turn their attention to the ocean. However, to date, human exploration of the ocean has just begun, and the understanding of the interior and bottom of the ocean remains at an early stage. There are many limitations in the process of understanding and developing the ocean. The complex and varied marine environment and the development level of science and technology are the main factors. Marine seismic exploration technology is of great significance in the modern research and development of advanced marine technologies.

A typical marine seismic exploration streamer system can be divided into two parts: onboard equipment and offshore equipment. The equipment on board includes navigation system, source control system, waterbird control system, streamer power supply system, data acquisition master control system, real-time data storage and Display system, etc. Offshore equipment includes seismic sources, waterfowl and solid streamers. A typical marine solid streamer is internally embedded with a hydrophone (a transducer that converts an acoustic signal into an electrical signal for receiving an acoustic signal in the water, called a receiving transducer, also commonly referred to as a hydrophone), and passes the test. The sound signal acquires seabed geological information for oil and gas exploration. The structure of the traditional marine seismic exploration streamer is composed of a polyurethane jacket, an internal streamer skeleton, a hydrophone, a collecting circuit, etc. The air gap inside the streamer is filled with aviation kerosene to adjust the buoyancy of the streamer and ensure the seismic pressure signal in the streamer. Internal low reflection and low loss propagation for fidelity acquisition of seismic signals. However, in the case of offshore liquid towline, oil leakage caused by damage to the towline casing often causes marine environmental pollution, and seawater entering the streamer may cause leakage, corrosion and other damage, and it is impossible to continue offshore operations and reduce the sea. Work efficiency.

Summary of the invention

The object of the present invention is to provide a solid streamer for marine seismic exploration which is simple in structure, is environmentally friendly and has good reliability.

The basic technical solution for achieving the object of the present invention is: a solid streamer for marine seismic exploration, the structural features of which include: a main cable, a hydrophone, a buoyancy sleeve and an outer sheath. The hydrophone is fixedly disposed on the main cable at equal intervals. The hydrophone is electrically connected to the corresponding core in the main cable. The buoyancy sleeve is made of a foamed polyethylene material that is extruded over the main cable. The buoyancy sleeves are fixedly disposed on the main cable at equal intervals and are located between two adjacent hydrophones. The outer sheath is made of a thermoplastic polyurethane elastomer rubber material, and the outer sheath is extruded outside the hydrophone, the positioning end and the buoyancy sleeve, and is seamlessly bonded to the hydrophone.

The technical solution based on the above basic technical solutions is: also includes a plug. The plug is an injection molded one. The plug is generally in the shape of a circular cylinder, and the diameter of the central through hole is the same as the outer diameter of the main cable. The lower portion of the plug is provided with a slit extending through the inner and outer sides thereof in the front and rear direction, and the surface of the cut passes through the axis of the plug. The upper side of the plug is provided with a terminal slot for accommodating the wiring portion of the hydrophone and the core in the main cable. The plug is sleeved on the main cable, and each plug has a plug on the left and right sides, and the plug slot of the plug faces the hydrophone. The plug is located between the hydrophone and the buoyancy sleeve. The outer sheath is extruded outside the hydrophone, plug and buoyancy sleeve and is seamlessly bonded to the hydrophone.

The technical solution based on the above respective technical solutions is: further comprising a positioning end. The positioning tip is injection molded between the buoyancy sleeve and the hydrophone to position the hydrophone to prevent the hydrophone from changing in the axial position of the main cable. The outer sheath is extruded outside the hydrophone, the positioning end and the buoyancy sleeve, and is seamlessly bonded to the hydrophone.

The technical solution based on the above respective technical solutions is: further comprising a positioning end. The positioning end is injection molded between the buoyancy sleeve and the plug for positioning the hydrophone to prevent the hydrophone from changing in the axial position of the main cable. The outer sheath is extruded outside the hydrophone, the plug, the positioning end and the buoyancy sleeve, and is seamlessly bonded to the hydrophone.

The technical solution based on the above respective technical solutions is: further comprising a buffer sleeve. The buffer sleeve is an injection molded one. The buffer sleeve is generally in the shape of a circular cylinder, and the diameter of the central through hole is the same as the outer diameter of the main cable. The lower portion of the buffer sleeve is provided with a slit extending through the inner and outer sides thereof in the front and rear direction, and the surface of the slit passes through the axis of the buffer sleeve, and the buffer sleeve On the main cable. A buffer sleeve is provided on each of the left and right sides of each hydrophone. The buffer sleeve is located between the positioning end and the plug. The outer sheath is extruded outside the hydrophone, the plug, the buffer sleeve, the positioning end and the buoyancy sleeve, and is seamlessly bonded to the hydrophone.

The technical solution based on the above respective technical solutions is that the main cable comprises a transmission core, a tensile fiber layer, a first sheath layer, a wire layer and a second sheath layer. The tensile fiber layer is made of aramid yarn and/or polyester yarn woven outside the transmission wire core. The first jacket layer is extruded outside the tensile fiber layer and the first jacket layer is made of a polyethylene material. The wire layer includes a set of power lines and a set of signal lines. The power line and the signal line are disposed at equal intervals in the circumferential direction of the main cable outside the first sheath layer to form a corresponding wire layer. Silicone gel is filled between the power and signal wires and the main cable. The second sheath layer is made of a thermoplastic polyurethane elastomer rubber material, and the second sheath layer is extruded outside the wire layer.

The technical solution based on the above respective technical solutions is that the transmission core includes four transmission lines and a transmission core sheath. The four transmission lines have the same structure, including transmission line conductors and transmission line insulation. The transmission line conductor is made of a number of tinned soft round copper wires by a stranding process. The transmission line insulation is made of a thermoplastic polyester elastomer, and the transmission line insulation is extruded outside the transmission line conductor. 4 transmission lines are twisted and combined, the transmission core sheath is extruded outside the 4 transmission lines, and the transmission core sheath is made of thermoplastic polyurethane elastomer rubber material. The transmission core has a diameter of 1.5 mm to 4.0 mm.

The technical solution based on the above respective technical solutions is as follows: the power cable has four, and the four power cables have the same structure, and each includes a power line conductor and a power line insulation layer. The power line conductor is made of a number of tinned soft round copper wires by a stranding process, and the power line conductor has a diameter of 1.0 mm to 4.0 mm. The power line insulation layer is made of a thermoplastic polyester elastomer, and the power line insulation layer is extruded outside the power line conductor, and the power line insulation layer has a thickness of 0.3 mm to 0.6 mm. The power line insulation is marked with the appropriate color.

The signal lines have 10 to 14. Each signal line has the same structure, and includes a signal line core and a signal line sheath. There are 2 signal wire cores, and 2 signal wire cores are twisted and set. The two signal line cores have the same structure, and both include a signal line core conductor and a signal line core insulation layer. The signal wire core conductor is made of a plurality of tinned soft round copper wires by a stranding process, and the signal wire core conductor has a diameter of 0.6 mm to 1.0 mm. The signal wire core insulating layer is made of a thermoplastic polyester elastomer, and the signal wire core insulating layer is extruded outside the signal wire core conductor, and the signal wire core insulating layer has a thickness of 0.1 mm to 0.4 mm. The signal wire core insulation is marked with different colors. The signal line jacket is extruded from polyethylene outside the signal line fill layer. The number of signal lines of the main cable is equal to the number of signal lines to be electrically connected to the hydrophone or the number of signal lines of the main cable is greater than the number of signal lines required for the hydrophone to be electrically connected to one to two.

The technical solution based on the respective technical solutions described above is that the main cable further includes a fourth braid layer and a third sheath layer. The fourth woven layer is woven from the aramid yarn outside the second sheath layer and has a weaving density of 30%. The third jacket layer is made of a thermoplastic polyurethane elastomer rubber material, and the third jacket layer is extruded outside the fourth braid layer.

The technical solution based on the respective technical solutions described above is that the tensile fiber layer comprises a first woven layer, a second woven layer and a third woven layer. The first woven layer is woven from the aramid yarn obliquely outside the transmission core, the second woven layer is 100% woven from the polyester woven fabric outside the first woven layer, and the third woven layer is woven from the aramid woven fabric outside the second woven layer. .

The invention has positive effects: (1) The solid tow cable for marine seismic exploration of the invention has a simple structure, greatly reduces the cost of the product, generates buoyancy through the foamed polyethylene, and causes the cable to float in the seawater, assisting Controlling the position of the streamer hovering in the seawater, avoiding the problem of marine environment pollution caused by the damage of the streamer casing and oil leakage, is conducive to protecting the environment, and the whole streamer is evenly proportioned, and the balance of the streamer is easy to adjust. The outer sheath is made of thermoplastic polyurethane elastomer rubber (TPU) material and seamlessly bonded to the hydrophone. It not only protects the hydrophone, but also has no effect on seismic wave transmission. The data acquisition accuracy is high. This makes the reliability of the streamer greatly improved. The outer jacket also has the ability to withstand crushing and impact resistance, puncture resistance and load distribution.

(2) The solid streamer for marine seismic exploration of the present invention is provided with a tensile fiber layer, and the tensile fiber layer is provided with a first woven layer, a second woven layer and a third woven layer. The first woven layer is knitted by the aramid yarn obliquely wrapped outside the transmission wire core, the second woven layer is woven by the polyester yarn outside the first woven layer, and the third woven layer is woven by the aramid yarn to the outside of the second woven layer. The tensile strength of the streamer is greatly improved, and the elongation of the tension fiber (aramid yarn and polyester yarn) is ≤0.3% from 4kN to 22kN, which is beneficial to dragging.

(3) The power line conductor of the power line of the conductor layer of the solid streamer for marine seismic exploration of the present invention is made of tinned soft round copper wire by a stranding process, and has good flexibility, high reliability and tensile strength. Big. DC resistance ≤5.31 Ω/km at 20 °C. The power line insulation layer is made of thermoplastic polyester elastomer (TPEE) with a voltage rating of 600V and a temperature change of -55°C to 150°C.

(4) The signal line of the signal line of the conductor layer of the solid streamer for marine seismic exploration of the present invention is composed of a plurality of tinned soft round copper wires by a stranding process, and the signal line is moved. The softness is good, the multiple stranding can disperse the defects, the reliability is improved, and the combined breaking force of the stranded wire is larger than that of the single wire of the same section, and the DC resistance is ≤49.5 Ω/km at 20 °C. The signal wire core insulation layer is made of thermoplastic polyester elastomer (TPEE) with a voltage rating of 600V and a temperature change of -55°C to 150°C.

(5) The silicon gel is filled between the power lines and the signal lines of the wire layer of the solid streamer for marine seismic exploration according to the present invention, and has water resistance, ozone resistance, weathering resistance, moisture resistance, non-toxicity, tastelessness, and line shrinkage. The low-end advantages improve cable life, and the cable is safe to use, which is good for dragging.

(6) The second sheath layer of the solid streamer for marine seismic exploration of the present invention is made of thermoplastic polyurethane elastomer rubber (TPU) material, which has good wear resistance, ozone resistance, low temperature resistance, oil resistance and chemical resistance. Features such as medicines, excellent environmental resistance, high hardness, high strength and good elasticity, which is conducive to dragging operations and protect cables from impact damage.

(7) The fourth braid layer of the solid streamer for marine seismic exploration of the present invention is knitted by aramid yarn outside the second sheath layer, and has the advantages of light weight, high strength, dimensional stability, low shrinkage rate, puncture resistance and resistance. Abrasive, heat resistance, chemical resistance, mechanical properties.

(8) The third sheath layer of the solid streamer for marine seismic exploration of the present invention is made of thermoplastic polyurethane elastomer rubber (TPU) material, which has excellent wear resistance, excellent ozone resistance, high hardness and high strength. It has the advantages of good elasticity, low temperature resistance, oil resistance, chemical resistance and excellent environmental resistance, which is beneficial to the dragging operation and protects the cable from being damaged by impact.

(9) The hydrophone of the solid streamer for marine seismic exploration of the present invention is equally spaced on the main cable, and can uniformly detect the seabed signal, which is advantageous for improving data accuracy.

(10) The signal line of the solid streamer for marine seismic exploration of the present invention is provided with spare, which reduces the risk of the entire streamer being scrapped due to damage of the signal line, and reduces the cost of replacing the streamer.

(11) The solid streamer for marine seismic exploration of the present invention is provided with a plug having a terminal groove for accommodating a wiring portion of a hydrophone and a signal line in the main cable, which can protect the joint portion from being blocked. Squeeze damage.

(12) The solid streamer for marine seismic exploration of the present invention is provided with a buffer sleeve, and the buffer sleeve is made of a silicone rubber material, and has good elasticity to prevent the streamer from being squeezed by the bend during the dragging process. damage.

(13) The solid streamer for marine seismic exploration of the present invention is provided with a positioning end. After the hydrophone is installed, the positioning end is injection-molded at both ends, and the hydrophone can be accurately positioned to ensure the interval between the hydrophones. The distance is consistent, and at the same time, the position of the hydrophone in the axial direction of the main cable is prevented from changing during the use of the drag, resulting in a decrease in data accuracy.

DRAWINGS

1 is a schematic structural view of a hydrophone portion of a solid streamer for marine seismic exploration according to the present invention;

2 is a schematic structural view of a buoyancy sleeve portion of a solid streamer for marine seismic exploration according to the present invention;

3 is a schematic axial structural view of a solid streamer for marine seismic exploration according to the present invention;

4 is a schematic enlarged structural view of the transmission core of FIG. 1;

FIG. 5 is an enlarged schematic structural view of a signal line of the wire layer of FIG. 1; FIG.

Figure 6 is a schematic enlarged view of the plug.

The markings in the above figures are as follows:

Main cable 1, transmission core 1-1,

Tensile fiber layer 1-2, first woven layer 1-21, second woven layer 1-22, third woven layer 1-23,

First sheath layer 1-3,

Wire layer 1-4,

Power cord 1-41, power cord conductor 1-41-1, power cord insulation 1-41-2,

Signal line 1-42, signal line core 1-42-1, signal line core conductor 1-42-1a, signal line core insulation layer 1-42-1b,

Signal cable sheath 1-42-2,

Second sheath layer 1-5, fourth braid layer 1-6, third sheath layer 1-7,

Hydrophone 2, plug 3, buffer sleeve 4, positioning end 5,

Buoyancy sleeve 6,

Outer sheath 7.

detailed description

(Example 1)

The description of the present invention is described in terms of the specific orientation shown in FIG. 1, and the up, down, left, and right directions shown in FIG. 1 are also described in the up, down, left, and right directions.

1 to 6, the solid streamer for marine seismic exploration of the present invention includes a main cable 1, a hydrophone 2, a plug 3, a buffer sleeve 4, a positioning end 5, a buoyancy sleeve 6, and an outer sheath 7.

1 to 3, the main cable 1 includes a transmission core 1-1, a tensile fiber layer 1-2, a first sheath layer 1-3, a wire layer 1-4, a second sheath layer 1-5, and a first Four braid layers 1-6 and a third sheath layer 1-7.

1, 2 and 4, the transmission core 1-1 includes four transmission lines 1-1a and a transmission core sheath 1-1b. The four transmission lines 1-1a have the same structure and each include a transmission line conductor 1-1a-1 and a transmission line insulation 1-1a-2. The transmission line conductor 1-1a-1 is made of a plurality of tinned soft round copper wires by a stranding process. The transmission line insulation 1-1a-2 is made of a thermoplastic polyester elastomer (TPEE), and the transmission line insulation 1-1a-2 is extruded outside the transmission line conductor 1-1a-1. Four transmission lines 1-1a are twisted and combined, the transmission core sheath 1-1b is extruded outside the four transmission lines 1-1a, and the transmission core sheath 1-1b is made of thermoplastic polyurethane elastomer rubber (TPU) material. The transmission core 1-1 has a diameter of 1.5 mm to 4.0 mm, which is 3.5 mm in this embodiment.

Referring to Figures 1 and 2, the tensile fiber layer 1-2 is formed by braiding aramid yarn and/or polyester yarn outside the core of the transmission wire. The tensile fiber layer 1-2 includes a first woven layer 1-21, a second woven layer 1-22, and a third woven layer 1-23. The first woven layer 1-21 is woven from the aramid yarn obliquely outside the transmission core 1-1, and the second woven layer 1-22 is woven from the polyester woven fabric 100% outside the first woven layer 1-21, and the third woven layer 1 -23 is woven from aramid woven bag outside the second woven layer 1-22.

1 and 2, the first sheath layer 1-3 is extruded outside the tensile fiber layer 1-2, and the first sheath layer 1-3 is made of a polyethylene material.

1, 2 and 5, the wire layers 1-4 include a set of power lines 1-41 and a set of signal lines 1-42. There are four sets of power supply lines 1-41, and the four power supply lines 1-41 have the same structure, and each includes a power line conductor 1-41-1 and a power line insulation layer 1-41-2. The power line conductor 1-41-1 is made of a plurality of tinned soft round copper wires by a stranding process, and the power line conductor 1-41-1 has a diameter of 1.0 mm to 4.0 mm, which is 2.3 mm in this embodiment. The power line insulation layer 1-41-2 is made of thermoplastic polyester elastomer (TPEE), and the power line insulation layer 1-41-2 is extruded outside the power line conductor 1-41-1, and the power line insulation layer 1-41 The thickness of -2 is from 0.3 mm to 0.6 mm, which is 0.4 mm in this embodiment. The power line insulation layer 1-41-2 is marked with a corresponding color.

Referring to FIG. 1, FIG. 2 and FIG. 5, there are 10 to 14 sets of signal lines 1-42, 12 in this embodiment, and 12 signal lines 1-42 have the same structure, including signal line cores 1-42. -1 and signal line sheath 1-42-2. There are two signal wire cores 1-42-1, and two signal wire cores 1-42-1 are twisted and set. The two signal line cores 1-42-1 have the same structure, and each includes a signal line core conductor 1-42-1a and a signal line core insulating layer 1-42-1b. The signal wire core conductor 1-42-1a is made of a plurality of tinned soft round copper wires by a stranding process, and the signal wire core conductor 1-42-1a has a diameter of 0.6 mm to 1.0 mm, which is 0.8 in this embodiment. Millimeter. The signal line core insulating layer 1-42-1b is made of a thermoplastic polyester elastomer (TPEE), and the signal line core insulating layer 1-42-1b is extruded outside the signal line core conductor 1-42-1a, and the signal The thickness of the wire core insulating layer 1-42-1b is 0.1 mm to 0.4 mm, which is 0.25 mm in this embodiment. The signal wire core insulation is marked with different colors. The signal line sheath 1-42-2 is extruded from polyethylene outside the signal line filling layer 1-42-2.

1 and 2, a set of power supply lines 1-41 and a set of signal lines 1-42 are disposed at equal intervals in the circumferential direction of the main cable 1 outside the first sheath layer 1-3 to form a corresponding wire layer 1 -4. A set of power lines 1-41 and a set of signal lines 1-42 and the main cable 1 are filled with a silicone gel. The second sheath layer 1-5 is made of a thermoplastic polyurethane elastomer rubber (TPU) material, and the second sheath layer 1-5 is extruded outside the wire layers 1-4. The fourth braid layer 1-6 is woven from the aramid yarn outside the second sheath layer 1-5 with a weaving density of 30%. The third sheath layer 1-7 is made of a thermoplastic polyurethane elastomer rubber (TPU) material, and the third sheath layer 1-7 is extruded outside the fourth braid layer 1-6.

2 and 3, the buoyancy sleeve 6 is made of a foamed polyethylene material, and the foamed polyethylene is extruded on the main cable 1, and the outer diameter of the buoyancy sleeve 6 is the same as the outer diameter of the hydrophone. When the buoyancy sleeve 6 is produced, it is first wrapped around the main cable 1, and then the corresponding portion of the main cable 1 of the hydrophone 2, the plug 3, the buffer sleeve 4 and the positioning end 5 is cut off correspondingly. The buoyancy sleeve is 6 parts.

Referring to FIG. 1 and FIG. 3, the hydrophone 2 is a haval fastening structure, and the hydrophone 2 is fixedly disposed on the main cable 1 at an equal interval in the axial direction of the main cable 1. The hydrophone 2 is electrically connected to a corresponding signal line in the main cable 1. In this embodiment, the number of signal lines 1-42 of the main cable 1 is equal to the number of signal lines 1-42 to be electrically connected to the hydrophone 2. Or the number of signal lines 1-42 of the main cable 1 is larger than the number of signal lines 1-42 to be electrically connected to the hydrophone 2, which is two in the embodiment, and the two signal lines 1-42 Used as a spare line.

Referring to Figures 3 and 6, the plug 3 is an integrally molded part, and the embodiment is made of a silicone rubber material. The plug 3 has a circular column shape as a whole, and the diameter of the central through hole is the same as the outer diameter of the main cable 1. The lower portion of the plug 3 is provided with a slit extending through the inner and outer sides thereof in the front and rear direction, and the surface of the plug passes through the plug 3 Axis. The upper left side (or the right side) of the plug 3 is provided with a terminal groove 3-1 which can accommodate the wiring portion of the hydrophone 2 and the signal line in the main cable 1. The plugs 3 are sleeved on the main cable 1, and each of the hydrophones 2 is provided with a plug 3 on each of the left and right sides, and the terminal slot 3-1 of the plug 3 faces the hydrophone 2.

Referring to Fig. 3, the buffer sleeve 4 is an integrally molded part, and the embodiment is made of a silicone rubber material. The buffer sleeve 4 has a circular ring shape as a whole, and the diameter of the central through hole is the same as the outer diameter of the main cable 1. The lower portion of the buffer sleeve 4 is provided with a slit extending through the inner and outer sides thereof in the front and rear direction, and the surface of the slit passes through the buffer sleeve 4. The axis, the buffer sleeve 4 is sleeved on the main cable 1. A buffer sleeve 4 is disposed outside each of the plugs 3 on the left and right sides of each hydrophone 2. The positioning end 5 is injection molded on the main cable 1 using ABS material between the buffer sleeve 4 and the buoyancy sleeve 6 on the corresponding side.

1 to 3, the outer sheath 7 is made of thermoplastic polyurethane elastomer rubber (TPU) material, and the outer sheath 7 is extruded in the hydrophone 2, the plug 3, the buffer sleeve 4, the positioning end 5 and the buoyancy. The outer portion of the sleeve 6 is seamlessly bonded to the hydrophone 2. The outer sheath 7 has a thickness of 2.5 mm to 5 mm, which is 3.5 mm in this embodiment.

The above embodiments are merely illustrative of the invention, and are not intended to limit the invention, and various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the invention. Corresponding modifications can also be made according to the inspiration of the above embodiments, and therefore all equivalent technical solutions should be included in the patent protection scope of the present invention.

Claims

A solid streamer for marine seismic exploration, comprising: a main cable, a hydrophone, a buoyancy sleeve and an outer sheath; the hydrophone is fixedly disposed on the main cable at intervals; the hydrophone and the main cable The corresponding core is electrically connected; the buoyancy sleeve is made of foamed polyethylene material, and the foamed polyethylene is extruded on the main cable; the buoyancy sleeve is fixedly disposed on the main cable at equal intervals, and is located in two adjacent waters. Between the hearing devices; the outer sheath is made of thermoplastic polyurethane elastomer rubber material, and the outer sheath is extruded outside the hydrophone, the positioning end and the buoyancy sleeve, and is seamlessly bonded to the hydrophone.
The solid streamer for marine seismic exploration according to claim 1, further comprising: a plug; the plug is an integrally molded part; the plug is generally in the shape of a circular cylinder, and the diameter of the central through hole is outside the main cable. The diameter is the same, and the lower part of the plug has a slit extending through the inner and outer sides thereof in the front and rear direction, and the surface of the cut passes through the axis of the plug; the upper side of the plug is provided with a terminal groove, which can accommodate the hydrophone and the main cable. The wiring part of the core; the plug is sleeved on the main cable, and each plug has a plug on the left and right sides, and the plug slot of the plug faces the hydrophone; the plug is located in the hydrophone and the buoyancy sleeve The outer sheath is extruded outside the hydrophone, the plug and the buoyancy sleeve, and is seamlessly bonded to the hydrophone.
The solid streamer for marine seismic exploration according to claim 1, further comprising: a positioning end; the positioning end is injection molded between the buoyancy sleeve and the hydrophone for positioning the hydrophone to prevent water The position of the earpiece changes in the axial direction of the main cable; the outer sheath is extruded outside the hydrophone, the positioning end and the buoyancy sleeve, and is seamlessly bonded to the hydrophone.
The solid streamer for marine seismic exploration according to claim 2, further comprising: a positioning end; the positioning end is injection molded between the buoyancy sleeve and the plug for positioning the hydrophone to prevent water listening. The position of the device changes in the axial direction of the main cable; the outer sheath is extruded outside the hydrophone, the plug, the positioning end and the buoyancy sleeve, and is seamlessly bonded to the hydrophone.
The solid streamer for marine seismic exploration according to claim 4, further comprising: a buffer sleeve; the buffer sleeve is an integrally molded part; the buffer sleeve is generally in the shape of a circular cylinder, and the diameter of the central through hole is outside the main cable. The diameter is the same, and the lower part of the buffer sleeve is provided with a slit extending through the inner and outer sides thereof in the front and rear direction. The surface where the slit is located passes through the axis of the buffer sleeve, and the buffer sleeve is sleeved on the main cable; each buffer has a buffer sleeve on the left and right sides. The buffer sleeve is located between the positioning end and the plug; the outer sheath is extruded outside the hydrophone, the plug, the buffer sleeve, the positioning end and the buoyancy sleeve, and is seamlessly bonded to the hydrophone.
The solid streamer for marine seismic exploration according to any one of claims 1 to 5, wherein the main cable comprises a transmission core, a tensile fiber layer, a first sheath layer, a wire layer, and a second sheath layer; The fiber layer is made of aramid yarn and/or polyester yarn woven outside the transmission wire core; the first sheath layer is extruded outside the tensile fiber layer, the first sheath layer is made of polyethylene material; and the wire layer includes a set of power sources a line and a set of signal lines; the power line and the signal line are disposed at equal intervals along the circumferential direction of the main cable to form a corresponding wire layer outside the first sheath layer; filling the power line and the signal line with the main cable There is a silicone gel; the second sheath layer is made of a thermoplastic polyurethane elastomer rubber material, and the second sheath layer is extruded outside the wire layer.
The solid streamer for marine seismic exploration according to claim 6, wherein the transmission wire core comprises four transmission lines and a transmission core sheath; the four transmission lines have the same structure, each of which comprises a transmission line conductor and a transmission line insulation; and the transmission line conductor is plated by a plurality. The tin soft round copper wire is made by stranding process; the transmission line insulation is made of thermoplastic polyester elastomer, the transmission line insulation is extruded outside the transmission line conductor; the four transmission lines are twisted and synthesized, and the transmission core sheath is squeezed out of the four transmission lines. The transmission core sheath is made of a thermoplastic polyurethane elastomer rubber material; the transmission core has a diameter of 1.5 mm to 4.0 mm.
The solid streamer for marine seismic exploration according to claim 6, wherein the power line has four, and the four power lines have the same structure, and each includes a power line conductor and a power line insulation layer; A plurality of tinned soft round copper wires are made by a stranding process, and the power line conductor has a diameter of 1.0 mm to 4.0 mm; the power line insulation layer is made of a thermoplastic polyester elastomer, and the power line insulation layer is extruded outside the power line conductor. The thickness of the power line insulation layer is 0.3 mm to 0.6 mm; the power line insulation layer is marked with a corresponding color;

The signal lines have 10 to 14; the structure of each signal line is the same, including the signal line core and the signal line sheath; the signal line core has 2, 2 signal line cores are twisted and set; 2 The signal line core has the same structure, and includes a signal line core conductor and a signal line core insulation layer; the signal line core conductor is made of a plurality of tinned soft round copper wires by a stranding process, and the signal line core conductor is The diameter of the signal wire core insulation layer is made of thermoplastic polyester elastomer, the signal wire core insulation layer is extruded outside the signal wire core conductor, and the signal wire core insulation layer has a thickness of 0.1 mm to 0.4 mm; the signal wire core insulation layer is marked with different colors; the signal line sheath is extruded by polyethylene outside the signal line filling layer; the number of signal lines of the main cable is equal to the signal of the electrical connection required by the hydrophone The number of wires or the number of signal wires of the main cable is larger than the number of signal wires required for the hydrophone to be connected 1 to 2.
The solid streamer for marine seismic exploration according to claim 6, wherein the main cable further comprises a fourth braid layer and a third sheath layer; and the fourth braid layer is woven from the aramid filament in the second sheath layer In addition, the weaving density is 30%; the third sheath layer is made of a thermoplastic polyurethane elastomer rubber material, and the third sheath layer is extruded outside the fourth braid layer.
The solid streamer for marine seismic exploration according to claim 6, wherein the tensile fiber layer comprises a first woven layer, a second woven layer and a third woven layer; the first woven layer is woven by an aramid yarn obliquely wrapped Outside the transmission core, the second woven layer is 100% woven from the polyester woven fabric outside the first woven layer, and the third woven layer is woven from the aramid woven fabric outside the second woven layer.