Adsorptive environment-friendly oil absorption recovery bag
By designing a multi-layered, environmentally friendly oil-absorbing and recycling bag, the problem of oil pollution during the transfer of well pipes at sea and on land has been solved. It achieves efficient adsorption and protection, enhances the bag's impact resistance and durability, and adapts to changing transportation conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CNOOC ENERGY DEV EQUIP TECH
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-24
AI Technical Summary
In existing offshore drilling operations, oil contamination on the surface of downhole pipes is prone to leaks during the transfer between the sea and land, causing environmental pollution. Furthermore, traditional prevention and control methods are inefficient, labor-intensive, and cannot adapt to harsh environments, failing to effectively protect downhole pipes from impacts and collisions during transportation.
Design a multi-layered absorbent and environmentally friendly oil-absorbing recycling bag, including a buffer layer, an oil-absorbing layer, an anti-seepage layer, an inner protective layer, and an outer protective layer. It uses flexible cushioning felt, wool absorbent material, a polymer anti-seepage membrane, thermoplastic polyurethane, and a polypropylene composite polyethylene layer. It is sewn together with sewing thread and equipped with air hole buckles and steel wire ropes to ensure that the bag maintains stability and strength in harsh environments.
It effectively protects underground pipes in harsh environments, prevents oil leakage, improves safety and environmental protection during transportation, enhances the impact resistance and durability of the bag, adapts to changing transportation conditions, and is significantly superior to traditional plastic sheeting wrapping methods.
Smart Images

Figure CN224546809U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of oil-absorbing and recycling bags, and in particular relates to an absorbent and environmentally friendly oil-absorbing and recycling bag. Background Technology
[0002] During offshore drilling, completion, and repair operations, a large number of downhole pipes need to be returned to land for centralized maintenance. The surface of the downhole pipes that need to be returned is often covered with oil. If effective protective and control measures are not taken during the transfer between the sea and land, the oil can easily leak or adhere to the contact objects, causing serious secondary pollution to the road soil and marine environment.
[0003] Existing conventional pollution prevention methods primarily rely on manual labor to cover underground pipes awaiting transfer with plastic sheeting, felt, etc. This is inefficient and non-reusable, requiring multiple people to wrap oily materials with plastic sheeting, then secure them with tape, and finally inspect for leaks and re-wrap them. This approach offers limited functionality and lacks specific protection against collisions during sea and land transport, making it unsuitable for the working conditions during transfer. It is labor-intensive, cannot guarantee against the variability of the process, and is generally considered outdated. Utility Model Content
[0004] The problem this utility model aims to solve is to provide an absorbent and environmentally friendly oil-absorbing recycling bag, which is particularly soft and sturdy, has strong impact resistance, is safe and durable, and is not easily corroded, significantly superior to the traditional plastic sheet wrapping method. The inner lining is made of green and environmentally friendly oil-absorbing material, which has excellent oil absorption effect.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an absorbent and environmentally friendly oil-absorbing recycling bag, including a recycling bag body, the recycling bag body wrapping the pipe, the recycling bag body having a multi-layer structure, the recycling bag body including, from the inside to the outside, a buffer layer, an oil-absorbing layer, a seepage-proof layer, an inner protective layer and an outer protective layer.
[0006] Furthermore, the buffer layer wraps around and cushions the pipe, and the buffer layer is a flexible buffer felt.
[0007] Furthermore, the oil-absorbing layer adsorbs and locks in oily substances on the pipe, and the oil-absorbing layer is a wool absorbent material.
[0008] Furthermore, the impermeable layer covers the buffer layer and the oil-absorbing layer to prevent the oil-water mixture from seeping out, and the impermeable layer is a polymer impermeable membrane.
[0009] Furthermore, the inner protective layer is made of a flexible and wear-resistant material, specifically thermoplastic polyurethane.
[0010] Furthermore, the outer protective layer resists external impacts during use, and the outer protective layer is made of polypropylene composite polyethylene layer.
[0011] Furthermore, the outer protective layer is a woven bag.
[0012] Furthermore, the main body of the recycling bag is a one-piece structure, and the main bodies of the recycling bag are sewn together with sewing thread.
[0013] Furthermore, the sewing thread has 8 stitches per inch and is a high-strength thread.
[0014] Furthermore, an air hole buckle is provided on each side of the main body of the recycling bag every 0.3 meters.
[0015] The advantages and positive effects of this utility model are:
[0016] 1. This utility model has a simple structure and is easy to operate. Its outer protective layer resists external impacts during use, ensuring the packaging bag maintains its physical properties and chemical stability even in harsh environments, adapting to severe working conditions during turnover. The buffer layer acts as a buffer between the tubing and the oil-absorbing bag, preventing damage to other functional materials from physical impacts during operation. The oil-absorbing layer absorbs and locks in oily substances in the mixture. The anti-seepage layer provides a barrier, preventing the leakage of oil-water mixtures. The inner protective layer mitigates damage to the main body of the recycling bag from the internal tubing. Overall, it has strong impact resistance, is safe and durable, and is not easily corroded, significantly superior to traditional plastic sheeting wrapping methods, making it suitable for widespread application.
[0017] 2. The main body of the recycling bag of this utility model is sewn together with 8 stitches per inch and reinforced twice to improve the strength and durability of the packaging bag. Buckles and air hole buckles are used to tie the main body of the recycling bag with steel wire rope, which makes it convenient and quick to fix the main body of the recycling bag.
[0018] 3. This utility model provides a high-efficiency physical oil-absorbing bag with wool as the base material. Through the design of the packaging, the oil-repellent properties of the fiber surface and the gradient staggered pore structure, it achieves high oil absorption capacity, recyclability and rapid biodegradability. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model.
[0020] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of this utility model.
[0021] In the picture:
[0022] 1. Main body of the recycling bag; 2. Buffer layer; 3. Oil-absorbing layer;
[0023] 4. Impermeable layer; 5. Inner protective layer; 6. Outer protective layer;
[0024] 7. Pipes; 8. Steel wire ropes; 9. Clips. Detailed Implementation
[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] The embodiments of this utility model will be further described below with reference to the accompanying drawings:
[0029] like Figure 1 , Figure 2 As shown, an absorbent environmentally friendly oil-absorbing and recycling bag includes a recycling bag body 1, which wraps around a pipe 7. The recycling bag body 1 has a multi-layer structure, and from the inside out, it includes a buffer layer 2, an oil-absorbing layer 3, an anti-seepage layer 4, an inner protective layer 5, and an outer protective layer 6.
[0030] Specifically, the buffer layer 2 acts as a buffer between the pipe 7 and the oil-absorbing layer 3, preventing damage to other functional materials from physical impacts during operation. Preferably, the buffer layer 2 provided in this embodiment is a flexible buffer felt.
[0031] The oil-absorbing layer 3 has oil-absorbing properties, adsorbing and locking oily substances in the mixture. It is oleophilic and hydrophobic, and other efficient and high-performance oil-absorbing materials can be used to ensure high oil absorption efficiency. Preferably, the oil-absorbing layer 3 provided in this embodiment is a wool absorbent material.
[0032] The impermeable layer 4 covers the buffer layer 2 and the oil-absorbing layer 3, and the impermeable layer 4 has barrier properties to prevent the oil-water mixture from seeping out. Preferably, the impermeable layer 4 provided in this embodiment is a polymer impermeable membrane.
[0033] The inner protective layer 5 is flexible and abrasion-resistant, mitigating damage to the main body 1 of the recycling bag caused by the internal tubing 7. Preferably, the inner protective layer 5 provided in this embodiment is thermoplastic polyurethane.
[0034] The outer protective layer 6 resists external impacts during use and possesses high strength, high density, anti-aging properties, and waterproofness. Specifically, the outer protective layer 6 is made of polypropylene composite polyethylene layer. Preferably, the outer protective layer 6 provided in this embodiment is a woven bag.
[0035] Specifically, the buffer layer 2, the seepage-proof layer 4, the inner protective layer 5, and the outer protective layer 6 are all made of composite fibers. Through the oleophobicity of the fiber surface, the adhesion of oily pollutants is reduced, achieving an easy-to-clean effect.
[0036] The main body 1 of the recycling bag is a one-piece structure. The main body 1 of the recycling bag is sewn together with a stitch length of 8 stitches per inch. The stitch length is made of polyester, which is a high-strength thread. It is reinforced twice to improve the strength and durability of the packaging bag. Avoid setting the stitch length in the center of the wrapped tube 7 so as not to affect the overall effect of blocking oil and water mixture.
[0037] Preferably, an air hole buckle is provided on each side of the main body 1 of the recycling bag every 0.3 meters. A steel wire rope 8 is threaded through the air hole buckle and used to tie the main body 1 of the recycling bag. A buckle 9 is provided between the steel wire ropes 8. The buckle 9, together with the air hole buckle, uses the steel wire rope 8 to tie the main body 1 of the recycling bag, so as to quickly and easily fix the main body 1 of the recycling bag.
[0038] During hoisting, the following situations apply:
[0039] Lifting scenario 1: Pack the oil-containing pipe material 7 to be maintained, and use a crane to lift the outer steel wire rope 8 of the main body 1 of the recycling bag and lift it into the cage for transfer. During the transfer, only the cage is lifted. After arriving at the maintenance site, the outer steel wire rope 8 of the main body 1 of the recycling bag is lifted for loading and unloading.
[0040] Scenario 2: The oil-containing pipe material 7 to be maintained is packaged but not placed in the hoisting cage. The crane lifts the outer steel wire rope 8 of the main body 1 of the recycling bag and carries it from the offshore platform to the ship, to the truck, and finally to the maintenance site.
[0041] Specifically, the methods for transferring large quantities of downhole pipes 7 include the following:
[0042] Scenario 1: Ship: In the pipe material 7 turnover method, when using ships for turnover, the ships transport the pipe material 7 and other related equipment to the offshore drilling platform or oil field. At the same time, the pipe material 7 to be maintained can be transported back to shore for processing. During the use of the ship, there is friction and compression between the ship deck and the recovery bag body 1, the pipe material 7 and the recovery bag body 1, the recovery bag body 1 and the recovery bag body 1, and the wire rope 8 and the recovery bag body 1.
[0043] The outer protective layer 6 resists external impacts during use, while the buffer layer 2 acts as a buffer between the pipe 7 and the recycling bag body 1, effectively preventing friction between the ship deck and the recycling bag body 1, between recycling bag bodies 1 and each other, and between the wire rope 8 and the recycling bag body 1, which would cause wear to the recycling bag body 1.
[0044] The inner protective layer 5 mitigates the damage to the main body 1 of the recycling bag caused by the internal pipe 7, effectively preventing wear and tear on the main body 1 of the recycling bag caused by the pipe 7.
[0045] The outer protective layer 6 resists external impacts during use, while the buffer layer 2 acts as a buffer between the pipe 7 and the recycling bag body 1, protecting the pipe 7 from compression between the vehicle and the recycling bag body 1, the pipe 7 and the recycling bag body 1, the recycling bag body 1 and the recycling bag body 1, and the steel wire rope 8 and the recycling bag body 1.
[0046] Scenario 2: Land transportation: In the turnover method of pipe 7, road transportation is used for turnover. The truck transports the pipe 7 and other related equipment to the port of departure. At the same time, the pipe 7 to be maintained can be transported to the maintenance site. During the road transportation, there is friction and compression between the vehicle and the recycling bag body 1, the pipe 7 and the recycling bag body 1, the recycling bag body 1 and the recycling bag body 1, and the steel wire rope 8 and the recycling bag body 1.
[0047] The outer protective layer 6 resists external impacts during use, while the buffer layer 2 acts as a buffer between the pipe 7 and the recycling bag body 1, protecting the pipe 7 from compression between the vehicle and the recycling bag body 1, the pipe 7 and the recycling bag body 1, the recycling bag body 1 and the recycling bag body 1, and the steel wire rope 8 and the recycling bag body 1.
[0048] The inner protective layer 5 mitigates the damage to the main body 1 of the recycling bag caused by the internal pipe 7, effectively preventing wear and tear on the main body 1 of the recycling bag caused by the pipe 7.
[0049] The outer protective layer 6 ensures that the main body of the recycling bag 1 can maintain its physical properties and chemical stability in harsh environments, effectively preventing friction between the steel wire rope 8 and the main body of the recycling bag 1, between recycling bag bodies 1 and each other, and between the steel wire rope 8 and the main body of the recycling bag 1, which would lead to wear of the main body of the recycling bag 1.
[0050] Scenario 3: Suspension and hoisting: When the offshore return pipe 7 needs to be replaced or repaired, suspension and hoisting equipment is used for turnover. This method is suitable for moving the pipe 7 over a shorter distance, such as on a drilling platform or near-shore oil field. During this process, friction and extrusion between the wire rope 8 and the recovery bag body 1 are involved, as well as impact and extrusion when the pipe is hoisted to the ground.
[0051] The outer protective layer 6 resists external impacts during use, while the buffer layer 2 acts as a buffer between the pipe 7 and the main body 1 of the recycling bag, and impacts and squeezes the pipe 7 to avoid damage to other functional materials caused by physical impacts during operation.
[0052] The outer protective layer 6 ensures that the main body 1 of the recycling bag can maintain its physical properties and chemical stability in harsh environments, effectively preventing friction between the steel wire rope 8 and the main body 1 of the recycling bag, which would lead to wear and tear on the main body 1 of the recycling bag.
[0053] The advantages and positive effects of this utility model are:
[0054] 1. This utility model has a simple structure and is easy to operate. Its outer protective layer resists external impacts during use, ensuring the packaging bag maintains its physical properties and chemical stability even in harsh environments, adapting to severe working conditions during turnover. The buffer layer acts as a buffer between the tubing and the oil-absorbing bag, preventing damage to other functional materials from physical impacts during operation. The oil-absorbing layer absorbs and locks in oily substances in the mixture. The anti-seepage layer provides a barrier, preventing the leakage of oil-water mixtures. The inner protective layer mitigates damage to the main body of the recycling bag from the internal tubing. Overall, it has strong impact resistance, is safe and durable, and is not easily corroded, significantly superior to traditional plastic sheeting wrapping methods, making it suitable for widespread application.
[0055] 2. The main body of the recycling bag of this utility model is sewn together with 8 stitches per inch and reinforced twice to improve the strength and durability of the packaging bag. Buckles and air hole buckles are used to tie the main body of the recycling bag with steel wire rope, which makes it convenient and quick to fix the main body of the recycling bag.
[0056] 3. This utility model provides a high-efficiency physical oil-absorbing bag with wool as the base material. Through the design of the packaging, the oil-repellent properties of the fiber surface and the gradient staggered pore structure, it achieves high oil absorption capacity, recyclability and rapid biodegradability.
[0057] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.
Claims
1. An absorbent and environmentally friendly oil-absorbing recycling bag, characterized in that: The device includes a recycling bag body that wraps around the pipe. The recycling bag body has a multi-layer structure and, from the inside out, includes a buffer layer, an oil-absorbing layer, a seepage-proof layer, an inner protective layer, and an outer protective layer.
2. The absorbent and environmentally friendly oil-absorbing and recycling bag according to claim 1, characterized in that: The buffer layer wraps around and cushions the pipe, and the buffer layer is a flexible buffer felt.
3. The absorbent and environmentally friendly oil-absorbing and recycling bag according to claim 1 or 2, characterized in that: The oil-absorbing layer adsorbs and locks in oily substances on the pipe, and the oil-absorbing layer is a wool absorbent material.
4. An absorbent and environmentally friendly oil-absorbing and recycling bag according to claim 1 or 2, characterized in that: The impermeable layer covers the buffer layer and the oil-absorbing layer to prevent the oil-water mixture from seeping out. The impermeable layer is a polymer impermeable membrane.
5. An absorbent and environmentally friendly oil-absorbing and recycling bag according to claim 1 or 2, characterized in that: The inner protective layer is made of a flexible and wear-resistant material, specifically thermoplastic polyurethane.
6. An absorbent and environmentally friendly oil-absorbing and recycling bag according to claim 1 or 2, characterized in that: The outer protective layer resists external impacts during use, and the outer protective layer is made of polypropylene composite polyethylene layer.
7. The absorbent and environmentally friendly oil-absorbing and recycling bag according to claim 6, characterized in that: The outer protective layer is a woven bag.
8. An absorbent and environmentally friendly oil-absorbing and recycling bag according to claim 1 or 2, characterized in that: The main body of the recycling bag is a one-piece structure, and the main body of the recycling bag is sewn together with sewing thread.
9. The absorbent and environmentally friendly oil-absorbing and recycling bag according to claim 8, characterized in that: The sewing thread has 8 stitches per inch and is a high-strength thread.
10. An absorbent and environmentally friendly oil-absorbing and recycling bag according to claim 1 or 2, characterized in that: The recycling bag has an air hole buckle every 0.3 meters on both sides of the main body.