Z-shaped steel wire sealing load-bearing detection cable

Abstract

The utility model relates to a Z-shaped steel wire sealing load-bearing detection cable, and belongs to the technical field of oil field logging cables in petroleum engineering. According to the technical scheme, the cable comprises a cable core (1) and an armored steel wire layer armored outside the cable core (1), the armored steel wire layer comprises an inner layer and an outer layer, the inner layer is formed by armoring a circular inner-layer armored steel wire (2) or a Z-shaped inner-layer armored steel wire (3), the outer layer is formed by armoring a Z-shaped outer-layer armored steel wire (4), the circular inner-layer armored steel wire (2) or the Z-shaped inner-layer armored steel wire (3) is armored outside the cable core, and the Z-shaped outer-layer armored steel wire (4) is armored outside the cable core. And the Z-shaped outer layer armoring steel wire (4) is armoured at the outer side of the circular inner layer armoring steel wire (2) or the Z-shaped inner layer armoring steel wire (3). The utility model has the advantages that two adjacent Z-shaped steel wires can be well embedded together, the gap is small, the armoring directions of the inner and outer layers of Z-shaped steel wires are opposite, the gaps are staggered, and the sealing effect is good.

Description

Technical Field

[0001] The utility model relates to a Z-shaped steel wire sealed load-bearing detection cable, belonging to the technical field of well logging cables in petroleum engineering and oil fields. Background Art

[0002] Load-bearing probe cables are commonly used in oilfield logging, ensuring downhole electrical measurements while withstanding mechanical loads. As well depth increases, oil and gas pressures also rise, placing higher demands on the cable's load capacity and sealing at the surface wellhead.

[0003] The outer armored steel wires of traditional load-bearing detection cables are round, and there are many gaps between the steel wires. A large amount of sealing material needs to be filled when sealing the wellhead, but the sealing effect and efficiency are very low. Utility Model Content

[0004] The purpose of the utility model is to provide a Z-shaped steel wire sealed load-bearing detection cable, which greatly reduces the gaps between the steel wires. The cable is easy to seal after being lowered into the well, reduces the accident rate, and solves the above-mentioned problems existing in the background technology.

[0005] The technical solution of the utility model is:

[0006] A Z-shaped steel wire sealed load-bearing detection cable comprises a cable core and an armored steel wire layer armored outside the cable core. The armored steel wire layer consists of an inner and outer layers. The inner layer is armored with round inner armored steel wire or Z-shaped inner armored steel wire, and the outer layer is armored with Z-shaped outer armored steel wire. The round inner armored steel wire or Z-shaped inner armored steel wire is armored outside the cable core, and the Z-shaped outer armored steel wire is armored outside the round inner armored steel wire or Z-shaped inner armored steel wire.

[0007] Furthermore, the armoring directions of the Z-shaped inner armor steel wire and the Z-shaped outer armor steel wire are opposite.

[0008] Furthermore, the cable core comprises an insulating core 1, the insulating core 1 comprises a conductor 1 and an insulation 1, and the conductor 1 is extruded with an insulation 1.

[0009] Furthermore, there are multiple insulating cores one, and the multiple insulating cores one are twisted into a cable, a layer is added in the middle of the cable core, and a tape is wrapped around the cable core.

[0010] Furthermore, the cable core includes an optical fiber unit, which consists of an optical fiber, grease filling, a steel tube sheath and a lining layer. The steel tube sheath is arranged outside the multiple optical fibers, grease filling is provided between the steel tube sheath and the multiple optical fibers, and a lining layer is provided outside the steel tube sheath.

[0011] Furthermore, the cable core also includes two insulating cores, a plurality of two insulating cores are twisted circumferentially around the optical fiber unit to form a cable, a second filling layer is added in the middle of the cable core, and a second wrapping tape is wrapped around the outside of the cable core.

[0012] Furthermore, the insulated wire core 2 includes a conductor 2 and an insulation 2, and the conductor 2 is extruded with the insulation 2.

[0013] The positive effects of the utility model are as follows: by armoring a layer of Z-shaped outer armored steel wire outside the original round armored steel wire of the cable core, or replacing the original round armored steel wire with a Z-shaped inner armored steel wire, and armoring a layer of Z-shaped outer armored steel wire outside the Z-shaped inner armored steel wire, the overall double-layer armor layer is formed with good sealing effect; the two adjacent Z-shaped steel wires can be well embedded together with a small gap, which plays a sealing role under the action of external pressure, and the inner and outer layers of Z-shaped steel wire armor are in opposite directions, the gaps are staggered, and the sealing effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the first embodiment of the present utility model;

[0015] Figure 2 This is a structural diagram of the second embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the cable core structure of the third embodiment of the present utility model;

[0017] Figure 4 This is a schematic diagram of the cable core structure of the fourth embodiment of the present utility model;

[0018] Figure 5 This is a schematic diagram of the cable core structure of the fifth embodiment of the present utility model;

[0019] Figure 6 This is a schematic diagram of the cable core structure of Example 6 of the utility model;

[0020] Figure 7 This is a schematic diagram of the cable core structure of Example 7 of the utility model;

[0021] Figure 8 This is a schematic diagram of the cable core structure of the eighth embodiment of the present utility model;

[0022] In the figure: cable core 1, round inner armor steel wire 2, Z-shaped inner armor steel wire 3, Z-shaped outer armor steel wire 4, conductor 1 51, insulation 1 61, conductor 2 52, insulation 2 62, filling layer 1 71, filling layer 2 72, wrapping tape 1 81, wrapping tape 2 82, optical fiber 9, jelly filling 10, steel pipe sheath 11, lining 12. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Refer to the attached Figure 1 Embodiment 1 provides a Z-type steel wire sealed load-bearing detection cable, comprising a cable core 1 and an armored steel wire layer armored outside the cable core 1, wherein the armored steel wire layer is composed of an inner and an outer layer, the inner layer is armored with a circular inner armored steel wire 2, and the outer layer is armored with a Z-type outer armored steel wire 4. The circular inner armored steel wire 2 is armored outside the cable core 1, and the Z-type outer armored steel wire 4 is armored outside the circular inner armored steel wire 2.

[0025] In this embodiment, a layer of Z-shaped outer armored steel wire is armored outside the original round armored steel wire of the cable core to form a double-layer armored steel wire layer. Two adjacent Z-shaped steel wires can be well embedded together with a small gap, thereby improving the sealing effect.

[0026] Refer to the attached Figure 2 A second embodiment provides a Z-shaped steel wire sealed load-bearing detection cable, comprising a cable core 1 and an armored steel wire layer armored around the cable core 1. The armored steel wire layer comprises an inner and outer layer, an inner layer comprised of Z-shaped inner armored steel wires 3, and an outer layer comprised of Z-shaped outer armored steel wires 4. The Z-shaped inner armored steel wires 3 are armored around the cable core, and the Z-shaped outer armored steel wires 4 are armored around the outer sides of the Z-shaped inner armored steel wires 3. The Z-shaped inner armored steel wires 3 and the Z-shaped outer armored steel wires 4 are armored in opposite directions.

[0027] Preferably, the tensile strength of the Z-shaped inner layer armored steel wire 3 and the Z-shaped outer layer armored steel wire 4 is not less than 1500 MPa. By using the Z-shaped steel wires with a tensile strength of not less than 1500 MPa in opposite directions in the insulation outer layer armor of the cable core, the adjacent Z-shaped steel wires can be well embedded together and play a sealing role under the action of external pressure. In this embodiment, 0.8mm 2 Up to 2.5mm 2 The small-section Z-shaped steel wire is tightly arranged, and the overall armor outer diameter is 5.6mm to 12.8mm.

[0028] In this embodiment, two adjacent Z-shaped steel wires can be well embedded together with a small gap, and the inner and outer layers of Z-shaped steel wire armor are in opposite directions with staggered gaps, resulting in a good sealing effect.

[0029] The cable core 1 is of any structure. Figure 3 To the attached Figure 8 The cable core 1 is described with reference to several structures shown in the figure, wherein the number of insulating cores is not limited to that listed in the figure, and generally the number of insulating cores ranges from 1 to 7 cores.

[0030] Refer to the attached Figure 3 In the third embodiment, the insulated wire core 1 is 1 core, and the wire core includes a conductor 1 51 and an insulation 1 61. The conductor 1 51 is extruded with an insulation 1 61, and the insulation 1 61 is armored with a circular inner armored steel wire 2 or a Z-shaped inner armored steel wire 3.

[0031] Refer to the attached Figure 4 In the fourth embodiment, the insulated core is composed of three cores, which are twisted into a cable at a certain pitch, a filling layer 71 is added in the middle of the cable core, and a wrapping tape 81 is wrapped around the outer layer of the cable core to form a cable core 1.

[0032] Refer to the attached Figure 5 In the fifth embodiment, the insulated core is 4 cores, and the 4 cores are twisted into a cable at a certain pitch. A filling layer 71 is added in the middle of the cable core, and a wrapping tape 81 is wrapped around the outer layer of the cable core to form a cable core 1.

[0033] Refer to the attached Figure 6 In the sixth embodiment, the insulated core is 7 cores, one of which is placed in the center, and the remaining 6 cores are twisted into a cable at a certain pitch. A filling layer 71 is added in the middle of the cable core, and a wrapping tape 81 is wrapped around the outer layer of the cable core to form a cable core 1.

[0034] According to the need, the optical fiber unit part can be added. The optical fiber unit is composed of optical fiber 9, grease filling 10, steel pipe sheath 11 and lining 12. Figure 7 In the embodiment seven, the optical fiber unit can be used alone, a steel tube sheath 11 is arranged outside the plurality of optical fibers 9, a grease filling 10 is arranged between the steel tube sheath 11 and the plurality of optical fibers 9, and a lining 12 is arranged outside the steel tube sheath 11.

[0035] It can also be compounded into the cable as required, see the attached Figure 8 In embodiment 8, the cable core 1 further comprises a second insulated core (power line). Multiple second insulated cores (power lines) are evenly twisted circumferentially around the optical fiber unit to form a cable. A second filler layer 72 is added to the center of the cable core, and a second wrapping tape 82 is wrapped around the outer surface of the cable core. The second insulated core (power line) comprises a second conductor 52 and a second insulation layer 62. The second conductor 52 is extruded with the second insulation layer 62.

[0036] Furthermore, the armor layer constructed with traditional round armor wires has an outwardly convex outer surface, resulting in a rough outer surface. This causes severe wear and tear on the cable during lowering and lifting, shortening its service life. The armor layer constructed with Z-shaped armor wires has a very smooth surface, significantly reducing wear and tear during lowering and lifting, extending its service life and reducing construction costs.

Claims

1. A Z-shaped steel wire sealed load-bearing detection cable, characterized by: The invention comprises a cable core (1) and an armored steel wire layer armored outside the cable core (1), wherein the armored steel wire layer is composed of an inner and an outer layer, the inner layer is armored with a circular inner armored steel wire (2) or a Z-shaped inner armored steel wire (3), and the outer layer is armored with a Z-shaped outer armored steel wire (4), the circular inner armored steel wire (2) or the Z-shaped inner armored steel wire (3) is armored outside the cable core, and the Z-shaped outer armored steel wire (4) is armored outside the circular inner armored steel wire (2) or the Z-shaped inner armored steel wire (3).

2. A Z-shaped steel wire sealed load-bearing detection cable according to claim 1, characterized in that: The armoring directions of the Z-shaped inner layer armored steel wire (3) and the Z-shaped outer layer armored steel wire (4) are opposite.

3. A Z-shaped steel wire sealed load-bearing detection cable according to claim 1 or 2, characterized in that: The cable core (1) comprises an insulating core 1, which is composed of a conductor 1 (51) and an insulation 1 (61), and the conductor 1 (51) is extruded with an insulation 1 (61).

4. The Z-shaped steel wire sealed load-bearing detection cable according to claim 3, characterized in that: The number of the insulating cores is multiple, and the multiple insulating cores are twisted into a cable, a layer (71) is added in the middle of the cable core, and a tape (81) is wrapped around the cable core.

5. A Z-shaped steel wire sealed load-bearing detection cable according to claim 1 or 2, characterized in that: The cable core (1) comprises an optical fiber unit, which is composed of an optical fiber (9), a grease filling (10), a steel tube sheath (11) and a lining layer (12). The steel tube sheath (11) is arranged outside the plurality of optical fibers (9), the grease filling (10) is arranged between the steel tube sheath (11) and the plurality of optical fibers (9), and the lining layer (12) is arranged outside the steel tube sheath (11).

6. The Z-shaped steel wire sealed load-bearing detection cable according to claim 5, characterized in that: The cable core (1) further comprises two insulating wire cores, a plurality of the two insulating wire cores are twisted around the optical fiber unit in a circumferential direction to form a cable, a second filling layer (72) is added in the middle of the cable core, and two wrapping tapes (82) are wrapped around the outside of the cable core.

7. The Z-shaped steel wire sealed load-bearing detection cable according to claim 6, characterized in that: The insulated wire core 2 comprises a conductor 2 (52) and an insulation 2 (62), and the conductor 2 (52) is extruded with the insulation 2 (62).

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