Super-long-life anti-fatigue special steel wire rope for petroleum cobalt well

Abstract

The utility model discloses a super-long-life anti-fatigue special steel wire rope for a petroleum cobalt well, and belongs to the technical field of steel wire ropes. A super-long-life anti-fatigue special steel wire rope for a petroleum cobalt well comprises an inner strand core, the inner strand core is sleeved with a buffer layer, an outer strand is twisted on the outer portion of the buffer layer, the outer strand is filled with filler, the filler is epoxy resin materials, and due to the fact that the outer strand is twisted rightwards, the outer strand is twisted rightwards, and the outer strand is twisted rightwards. The whole steel wire rope has the characteristics of creep resistance, explosion prevention and the like, the flexibility and corrosion resistance of the steel wire rope are improved, and under the complex use environment of a petroleum cobalt well, the right-twisted outer strand can improve the high-temperature resistance effect of the steel wire rope and improve the buckling fatigue resistance of the steel wire rope, so that the service life of the steel wire rope is prolonged; the inner rope core and the outer rope core are twisted rightwards in the same direction, so that the surface of the outer strand is smoother, the contact area between the outer strand and a head sheave and a roller is large, bending stress is small, fatigue resistance and abrasion resistance are good, and the service life is long.

Description

Technical Field

[0001] This application relates to the technical field of wire ropes, and particularly to an extra-long life anti-fatigue special wire rope for oil drilling. Background Art

[0002] The extra-long life anti-fatigue special wire rope for oil drilling is a wire rope designed specifically for harsh working environments such as oil drilling, and has excellent wear resistance, anti-fatigue performance, and long life characteristics. This type of special wire rope is usually made of high-strength and high-toughness steel wires and is processed through special processes to improve its corrosion resistance, anti-fatigue performance, and wear resistance.

[0003] A patent with the publication number CN219621489U discloses a long-life composite wire rope, which includes a rope core and multiple strands of wire bundles spirally wrapped around the rope core. A spiral grease replenishing tube is wrapped around the rope core, and one grease replenishing tube is arranged in each cavity formed by any two adjacent wire bundles and the rope core in the circumferential direction. A plurality of first grease outlet holes are arranged along the length direction of each grease replenishing tube. This application has the advantage of improving the service life of the wire rope.

[0004] However, the above technical solution has the following defects:

[0005] (1) In the complex working environment of oil drilling, the wire rope needs to withstand friction from objects such as pulleys, drums, and hooks. The wear resistance of the wire rope may not be sufficient to cope with this high-intensity friction. Prolonged use will cause surface wear, which will in turn affect its service life and safety. At the same time, the wire rope may break due to excessive wear or fatigue during oil drilling operations. A broken wire rope may not only cause production stoppages but also pose serious damage and threats to workers and equipment.

[0006] (2) At the same time, due to the wire rope in oil drilling operations needing to withstand alternating loads, during long-term operation, the wire rope may experience fatigue wire breakage. The working environment of oil drilling is complex, and the breakage or other failures of the wire rope may trigger risks such as fires and explosions. In addition, the breakage of the wire rope may also cause harm to workers and even endanger their lives. Utility Model Content

[0007] An object of this application is to: improve the anti-fatigue ability of the wire rope and its service life in the complex working environment of oil drilling.

[0008] To achieve the above object, the technical solution adopted in this application is: an extra-long life anti-fatigue special wire rope for oil drilling, including an inner strand core, a buffer layer is sleeved outside the inner strand core, an outer strand is twisted outside the buffer layer, and a filler is filled outside the outer strand, and the filler is an epoxy resin material.

[0009] Preferably, the number of the outer twisted strands is six, and the twist direction of the outer twisted strands is right twist.

[0010] Preferably, the outer twisted strand includes an inner rope core, an outer rope core and a friction barrier layer. The number of the inner rope cores is six, the twist direction of the inner rope cores is right twist, the number of the outer rope cores is fourteen, and the twist direction of the outer rope cores is right twist.

[0011] Preferably, both the inner rope core and the outer rope core are galvanized low-carbon steel wires, the carbon content inside the inner rope core and the outer rope core is ≤.%, and the zinc layer thickness of the galvanized layer outside the inner rope core and the outer rope core is not less than μm.

[0012] Preferably, the friction barrier layer is made of polyurethane rubber material, and a protective layer is filled inside the friction barrier layer. The protective layer is made of PCV plastic material.

[0013] Preferably, a heat-resistant layer is fixedly sleeved outside the outer twisted strand. The heat-resistant layer is mainly made of a glass fiber reinforced material.

[0014] Preferably, an insulating and wear-resistant layer is fixedly sleeved outside the heat-resistant layer. The insulating and wear-resistant layer is mainly sprayed with polyurethane paint.

[0015] Compared with the prior art, the beneficial effects of the present application are as follows:

[0016] (1) Since the twist direction of the outer twisted strands is right twist, the steel wire rope as a whole exhibits characteristics such as creep resistance and explosion prevention. At the same time, the flexibility and corrosion resistance of the steel wire rope are improved. And in the complex use environment of oil drilling, the right-twisted outer twisted strands can improve the high-temperature resistance effect of the steel wire rope, improve its anti-buckling fatigue ability, and thus improve its service life. The same right twist of the inner rope core and the outer rope core makes the surface of the outer twisted strand smoother, has a large contact area with the sheave and the drum, has a small bending stress, good fatigue resistance and wear resistance, and a long service life.

[0017] (2) Since the insulating and wear-resistant layer sprayed with polyurethane paint on the outermost part of the steel wire rope improves the wear resistance, impact resistance and insulation performance of the steel wire rope, and forms a tough protective film on the surface of the steel wire rope, extending the service life of the steel wire rope. The heat-resistant layer inside the insulating and wear-resistant layer enhances the heat insulation effect through the high-temperature resistance and corrosion resistance characteristics of the glass fiber reinforced material, making the steel wire rope more suitable for the high-temperature and corrosive environment inside the oil drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall front view three-dimensional schematic diagram proposed by the present utility model;

[0019] Figure 2 is the three-dimensional schematic diagram of the outer twisted strand proposed by the present utility model.

[0020] In the figure: 1, inner strand core; 11, buffer layer; 2, filler; 3, heat-resistant layer; 4, insulating and wear-resistant layer; 5, outer twisted strand; 51, inner rope core; 52, outer rope core; 53, protective layer; 54, friction barrier layer. Specific embodiments

[0021] Next, in combination with specific embodiments, the present application will be further described. It should be noted that, on the premise of non-conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0022] In the description of the present application, it should be noted that for orientation terms, if there are terms such as "center", "horizontal", "vertical", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence.

[0024] The terms "comprising" and "having" in the description and claims of the present application and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0025] The prior art has the following defects:

[0026] (1) In the complex working environment of oil drilling, the wire rope needs to withstand friction from objects such as pulleys, drums, and hook heads. The wear resistance of the wire rope may not be sufficient to cope with this high-intensity friction. Prolonged use will cause surface wear, which will in turn affect its service life and safety. At the same time, the wire rope may break due to excessive wear or fatigue during oil drilling operations. The broken wire rope may not only cause production stoppages but also pose serious damage and threats to workers and equipment.

[0027] (2)Meanwhile, since the wire rope needs to bear alternating loads during oil drilling operations, the wire rope may experience fatigue wire breaks after long-term operation. The working environment of oil drilling is complex, and the fracture or other failures of the wire rope may trigger risks such as fires and explosions. In addition, the fracture of the wire rope may also cause harm to the staff and even endanger their lives.

[0028] As an improvement, as Figure 1 and Figure 2 shown, the preferred embodiment of the present application is:

[0029] An extra-long life anti-fatigue special wire rope for oil drilling, including an inner strand core 1, with a buffer layer 11 sleeved outside the inner strand core 1, an outer strand 5 twisted outside the buffer layer 11, and a filler 2 filled outside the outer strand 5. The filler 2 is made of epoxy resin material.

[0030] As Figure 1 and Figure 2 shown, in this embodiment, the number of the outer strands 5 is six, and the lay direction of the outer strands 5 is right lay. The outer strand 5 includes an inner rope core 51, an outer rope core 52, and a friction barrier layer 54. The number of the inner rope cores 51 is six, and the lay direction of the inner rope cores 51 is right lay. The number of the outer rope cores 52 is fourteen, and the lay direction of the outer rope cores 52 is right lay.

[0031] Specifically, since the lay direction of the outer strands 5 is right lay, the wire rope as a whole exhibits characteristics such as creep resistance and explosion prevention. At the same time, the flexibility and corrosion resistance of the wire rope are improved. And in the complex use environment of oil drilling, the right-lay outer strands 5 can improve the high-temperature resistance effect of the wire rope, enhance its anti-buckling fatigue ability, and thus improve its service life. The same right lay of the inner rope cores 51 and the outer rope cores 52 makes the surface of the outer strand 5 smoother, with a larger contact area with the sheave and the drum, smaller bending stress, good fatigue resistance and wear resistance, and a long service life.

[0032] As Figure 2 shown, in this embodiment, both the inner rope core 51 and the outer rope core 52 are galvanized low-carbon steel wires, and the carbon content inside the inner rope core 51 and the outer rope core 52 is ≤0.25%. The zinc layer thickness of the galvanized layer outside the inner rope core 51 and the outer rope core 52 is not less than 10 μm.

[0033] Specifically, in this embodiment, since both the inner rope core 51 and the outer rope core 52 are galvanized low-carbon steel wires, the low-carbon steel wires have high strength and good toughness, which enables the twisted wire rope to bear a large amount of weight and pressure while maintaining excellent durability. This balance enables the wire rope to maintain stable working performance in the complex working environment of oil drilling. And galvanizing the outer wall of the low-carbon steel wire can significantly improve its corrosion resistance, extend its service life, enhance its strength and wear resistance.

[0034] AsFigure 2 As shown, in this embodiment, the friction barrier layer 54 is made of polyurethane rubber material, and a protective layer 53 is filled inside the friction barrier layer 54. The protective layer 53 is made of PVC plastic material.

[0035] Specifically, the friction barrier layer 54 can reduce the mutual friction between the outer strands 5, thereby reducing the friction loss between the outer strands 5, and achieving the effect of extending the service life of the wire rope. PVC plastic is used to fill inside the wire rope, which can not only stabilize the diameter of the wire rope, enhance the overall rigidity of the wire rope, but also improve the corrosion resistance and durability of the wire rope, and reduce the frictional heat during use, thereby extending the service life of the wire rope and improving the use safety factor.

[0036] As Figure 1 shown, in this embodiment, a heat-resistant layer 3 is fixedly sleeved outside the outer strand 5. The heat-resistant layer 3 is mainly made of a glass fiber reinforced material. An insulating and wear-resistant layer 4 is fixedly sleeved outside the heat-resistant layer 3. The insulating and wear-resistant layer 4 is mainly sprayed with a polyurethane coating.

[0037] Specifically, the heat-resistant layer 3 made of a glass fiber reinforced material can enhance the high-temperature resistance and corrosion resistance of the wire rope, enhance the heat insulation effect, making the wire rope more suitable for the high-temperature and corrosive environment inside the oil drilling well. The insulating and wear-resistant layer 4 sprayed with a polyurethane coating can improve the wear resistance, impact resistance and insulation performance of the wire rope, and form a tough protective film on the surface of the wire rope, extending the service life of the wire rope.

[0038] The working principle of this application is as follows:

[0039] When the staff uses the wire rope for hoisting operations in the oil drilling well, since the lay direction of the outer strand 5 is right lay, therefore, the wire rope as a whole exhibits characteristics such as creep resistance and explosion protection. At the same time, the flexibility and corrosion resistance of the wire rope are improved. And in the complex use environment of the oil drilling well, the right-lay outer strand 5 improves the high-temperature resistance effect of the wire rope, improves its anti-buckling fatigue ability, and thus improves its service life. The same right lay of the inner core 51 and the outer core 52 makes the surface of the outer strand 5 smoother, with a larger contact area with the sheave and the drum, smaller bending stress, good fatigue resistance and wear resistance, and a long service life;

[0040] Since both the inner core 51 and the outer core 52 are galvanized low-carbon steel wires, the wire rope formed by twisting can bear a large amount of weight and pressure, while maintaining excellent durability. This balance enables the wire rope to maintain stable working performance in the complex working environment of the oil drilling well, and galvanizing on the outer wall of the low-carbon steel wire significantly improves its corrosion resistance, extends the service life, enhances the strength and wear resistance;

[0041] Since the friction barrier layer 54 is made of polyurethane rubber material, it can effectively reduce the mutual friction between the outer strands 5, thereby reducing the friction loss between the outer strands 5 and achieving the effect of extending the service life of the wire rope. PVC plastic is used to fill the inside of the wire rope, which can not only stabilize the diameter of the wire rope, enhance the overall rigidity of the wire rope, but also improve the corrosion resistance and durability of the wire rope, and reduce the friction heat during use, thereby extending the service life of the wire rope and increasing the safety factor during use;

[0042] Since the heat-resistant layer 3 is provided outside the outer strands 5, the use of fiberglass-reinforced materials can enhance the high-temperature resistance and corrosion resistance of the wire rope, enhance the heat insulation effect, and make the wire rope more suitable for the high-temperature and corrosive environment inside the oil well. The insulating and wear-resistant layer 4 sprayed with polyurethane coating can improve the wear resistance, impact resistance and insulation performance of the wire rope, and form a tough protective film on the surface of the wire rope, extending the service life of the wire rope.

[0043] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. Super-long-life anti-fatigue special wire rope for oil drilling, characterized in that, It includes an inner strand core (1), a buffer layer (11) is sleeved outside the inner strand core (1), an outer twisted strand (5) is twisted outside the buffer layer (11), a filler (2) is filled outside the outer twisted strand (5), and the filler (2) is made of epoxy resin material.

2. The super-long service life and anti-fatigue special wire rope for oil drilling as claimed in claim 1, wherein, The number of the outer twisted strands (5) is six, and the twisting direction of the outer twisted strands (5) is right-handed.

3. The super-long-life anti-fatigue special wire rope for oil drilling as described in claim 2, characterized in that, The outer twisted strand (5) includes an inner rope core (51), an outer rope core (52) and a friction barrier layer (54). The number of the inner rope cores (51) is six, the twisting direction of the inner rope cores (51) is right-handed, the number of the outer rope cores (52) is fourteen, and the twisting direction of the outer rope cores (52) is right-handed.

4. The super-long-life anti-fatigue special wire rope for oil drilling as claimed in claim 3, wherein, Both the inner rope core (51) and the outer rope core (52) are galvanized low-carbon steel wires, and the carbon content inside the inner rope core (51) and the outer rope core (52) ≤ 0.25%. The zinc layer thickness of the galvanized layer outside the inner rope core (51) and the outer rope core (52) is not less than 10μm.

5. The extra-long service life and anti-fatigue special wire rope for oil drilling as described in claim 4, characterized in that, The friction barrier layer (54) is made of polyurethane rubber material, and a protective layer (53) is filled inside the friction barrier layer (54). The protective layer (53) is made of PVC plastic material.

6. The super-long-life anti-fatigue special wire rope for oil drilling as claimed in claim 2, wherein, A heat-resistant layer (3) is fixedly sleeved outside the outer twisted strand (5), and the heat-resistant layer (3) is mainly made of a glass fiber reinforced material.

7. The super-long-life anti-fatigue special wire rope for oil drilling as described in claim 6, characterized in that, An insulating and wear-resistant layer (4) is fixedly sleeved outside the heat-resistant layer (3), and the insulating and wear-resistant layer (4) is mainly sprayed with polyurethane coating.

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