Anti-freezing and heat-insulating device for shaft equipment

Abstract

The utility model relates to an anti-freezing and heat-insulating device for shaft equipment. Specifically, the anti-freezing and heat-insulating device for the shaft equipment comprises a heat source layer, a heat-insulating layer and a protective layer, the heat source layer is an electric heating layer, the outer side of the heat source layer is sequentially covered with the heat-insulating layer and the protective layer to form an integral composite layered structure, and a connecting structure used for being detachably installed on the shaft equipment is arranged on the composite layered structure. When the anti-freezing and heat-insulating device for the wellbore equipment is used, the heat source layer, the heat-insulating layer and the protective layer are combined into an integrated structure, and the composite layered structure can be directly wrapped on the wellbore equipment needing anti-freezing and heat-insulating during use, so that the wellbore equipment is prevented from being damaged by low temperature, high temperature, water, oil, corrosion and the like; the anti-freezing, heat preservation and protection functions of shaft equipment are achieved, repeated bundling is not needed, mounting and dismounting are convenient and fast, repeated utilization can be achieved, and the working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment for extracting oil, gas and water-soluble substances from wells, in particular to an antifreeze and heat-insulating device for wellbore equipment. Background Art

[0002] Winter production and construction are inevitable in the professional construction of oil and gas field development and production wells in my country's petroleum industry. In winter construction, in order to ensure on-site safe production operations, all grassroots oil and gas production units must take anti-freezing and heat preservation measures for on-site equipment and pipelines to avoid problems such as icing and freezing of on-site equipment and pipelines, which may cause safety accidents or abnormal production interruptions. At present, there are two main insulation measures for wellbore equipment taken on site: the first is to use steam pipelines as the main heating source. The steam pipelines are set on one side of the wellbore equipment, and the steam pipelines and wellbore equipment are protected by thermal insulation plastic sheets. In this scheme, the steam pipes, thermal insulation layers, and protective layers are constructed separately, and need to be bundled many times, with a long construction period, poor reuse rate, and the temperature is not easy to check and control. It is also prone to water leakage and air leakage, posing a safety hazard. The second is to use electric heating tapes as the main heating source. The electric heating tapes are wrapped around the outer periphery of the wellbore equipment that needs antifreeze and heat preservation, and on this basis, thermal insulation plastic sheets are added for protection. In this scheme, the electric heating tapes, thermal insulation layers, and protective layers are constructed separately, and need to be bundled many times. The construction period is long, the reuse rate is poor, the temperature is not easy to check and control, and there are safety hazards.

[0003] The existing technology adopts a method of separately constructing the heat source layer, the insulation layer, and the protective layer for the antifreeze and heat preservation devices of the wellbore equipment, which needs to be bundled many times and is difficult to reuse. Therefore, the existing antifreeze and heat preservation devices of the wellbore equipment have the technical problem of being difficult to install and disassemble. Utility Model Content

[0004] The utility model aims to provide an antifreeze and heat preservation device for wellbore equipment, so as to solve the technical problem that the antifreeze and heat preservation device for wellbore equipment in the prior art is difficult to install and disassemble.

[0005] The utility model discloses an antifreeze and heat preservation device for wellbore equipment, comprising a heat source layer, a heat preservation layer and a protective layer. The heat source layer is an electric heating layer. The outer side of the heat source layer is sequentially covered with a heat preservation layer and a protective layer to form an overall composite layer structure. The composite layer structure is provided with a connection structure for detachable installation on the wellbore equipment.

[0006] The utility model pioneers an antifreeze and heat preservation device for wellbore equipment, which combines a heat source layer, a heat insulation layer and a protective layer into an integrated structural design. When in use, the composite layered structure can be directly wrapped around the wellbore equipment that requires antifreeze and heat preservation to prevent damage to the wellbore equipment by low and high temperatures, water, oil and corrosion, thereby achieving the triple functions of antifreeze, heat preservation and protection for the wellbore equipment. It does not require multiple bundling, and is quick and easy to install and disassemble. It can be used multiple times with high work efficiency.

[0007] Furthermore, a connecting structure is arranged on the protective layer, and the protective layer is located at the outermost side of the composite layered structure. There is no need to arrange a connecting structure between the heat source layer and the thermal insulation layer to prevent damage to the structure of the heat source layer and the thermal insulation layer. By using the method of the outermost layer covering the inner layer, the connection with the antifreeze and thermal insulation device of the wellbore equipment is tighter and the sealing effect is better. The heat generated by the heat source layer is less likely to be lost, and corrosive liquids such as water and oil are not easy to enter, thereby achieving better antifreeze and thermal insulation and protection effects.

[0008] Furthermore, one end of the protective layer in the winding direction protrudes out of the insulation layer and the heat source layer, and the connection structure includes Velcro respectively arranged at both ends of the winding direction of the protective layer. The round hair surface and the burr surface of the Velcro are in full contact to fix the antifreeze and heat preservation device of the wellbore equipment on the wellbore equipment. The Velcro is a flexible material, the joints fit better, the sealing performance is improved, the antifreeze and heat preservation and protection effects are more stable, and the fixing effect is better.

[0009] Furthermore, both ends of the protective layer in the length direction protrude from the insulation layer and the heat source layer, and the connection structure also includes bundling holes arranged at both ends of the protective layer in the length direction. There are multiple bundling holes and they are arranged at intervals in the winding direction. The two ends of the antifreeze and heat preservation device of the wellbore equipment in the length direction are fixed through the bundling holes, so that the antifreeze and heat preservation device of the wellbore equipment is more firmly fixed on the wellbore equipment, and the sealing performance of the antifreeze and heat preservation device of the wellbore equipment in the length direction is better, thereby improving the antifreeze and heat preservation efficiency.

[0010] Furthermore, the thermal insulation layer is adhered to the heat source layer, and the protective layer is adhered to the thermal insulation layer. The adhesive connection makes the layers fit tightly and not easy to peel off. Before installation, the thermal insulation layer is tightly wrapped on the heat source layer, and the protective layer is tightly wrapped on the thermal insulation layer to prevent other media from entering between the layers and affecting the antifreeze and thermal insulation effect of the antifreeze and thermal insulation device of the wellbore equipment.

[0011] Furthermore, the insulation layer is a flame retardant layer, which prevents the external temperature from being too high or the temperature of the wellbore equipment from being too high, thereby preventing the fire from expanding the combustion range. When the external fire source is outside, since the operation is at the oil and gas production site, the fire source is prevented from spreading to the wellbore equipment and causing a large-scale fire. When the electric heating of the wellbore equipment's antifreeze and insulation device generates a fire source, the fire source is prevented from spreading to other wellbore equipment and causing a large-scale fire, thereby improving the safety of on-site construction.

[0012] Furthermore, the heat source layer adopts an electric heating device, which is an electric belt or a silicone rubber heating sheet. After power is turned on, the current passes through the electric belt or the silicone rubber heating sheet, generating a certain amount of heat, which is conducted out by the electric belt or the silicone rubber heating sheet to provide heat energy. The electric belt and the silicone heating sheet have high heating efficiency. After the heat source layer contacts the wellbore equipment, the generated heat energy is transferred to the equipment. The electric belt and the silicone heating sheet can be evenly arranged on the heat source layer, which can provide a stable heat source for the wellbore equipment, reduce heat exchange losses, and improve efficiency.

[0013] Furthermore, the antifreeze and heat preservation device for wellbore equipment includes a temperature control digital display device, which is conductively connected to the heat source layer and is located outside the composite layered structure, and is used to control and observe the temperature of the heat source layer. The temperature of the heat source layer can be observed in real time, and device failure can be discovered in time to prevent the wellbore equipment from being damaged due to the antifreeze and heat preservation device for wellbore equipment failing to achieve the antifreeze effect.

[0014] Furthermore, the temperature control digital display device includes a transformer device matched with the temperature control digital display device, so that the wellbore equipment antifreeze and insulation device meets the requirements of different voltage levels. The heat source layer is connected to the power supply through the temperature control digital display device to provide a stable power supply for the heat source layer, and is equipped with a transformer device so that the device can adapt to different voltages, thereby improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the first embodiment of the antifreeze and heat preservation device for wellbore equipment of the utility model;

[0016] Figure 2 for Figure 1 AA view in the figure;

[0017] Figure 3 This is a schematic structural diagram of the first embodiment of the antifreeze and heat preservation device for wellbore equipment of the utility model after being installed on the wellbore equipment;

[0018] In the figure: 1. Heat source layer; 2. Insulation layer; 3. Protective layer; 4. Bundling holes; 5. Temperature control digital display device; 6. Plug; 7. Wellbore equipment; 8. Velcro. DETAILED DESCRIPTION

[0019] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0020] Specific example 1 of the antifreeze and heat preservation device for wellbore equipment of the utility model:

[0021] The antifreeze and heat preservation device of the wellbore equipment is as follows Figure 1-Figure 3As shown, it includes: a heat source layer 1, a heat preservation layer 2 and a protective layer 3. The heat source layer 1 is covered with the heat preservation layer 2 and the protective layer 3 in sequence on the outside to form an integral composite layered structure. The composite layered structure is provided with a connection structure for detachably mounting with the wellbore equipment 7 when it is wrapped on the wellbore equipment 7. The temperature control of the heat source layer 1 adopts the connection between the heat source layer 1 and the temperature control digital display device 5. The temperature control digital display device 5 is located outside the composite layered structure and is used to observe the temperature of the wellbore equipment antifreeze and heat preservation device. The other end of the temperature control digital display device 5 is connected to a plug 6, and the temperature control digital display device is equipped with a corresponding transformer device to meet the requirements under different voltages.

[0022] In the first embodiment of the present invention, the heat source layer 1, the thermal insulation layer 2 and the protective layer 3 are integrated into a composite layered structure. The heat source layer 1 adopts an electric heating device, and adopts an electric belt heating method or a silicone rubber heating sheet heating method. The current passes through the electric belt or the silicone rubber heating sheet to generate a certain amount of heat, and the electric belt or the silicone rubber heating sheet conducts to provide heat energy. The heat source layer 1 is in contact with the wellbore equipment 7, and the generated heat energy is transferred to the equipment to achieve an antifreeze effect; the thermal insulation layer 2 is adhered to the heat source layer 1, and the thermal insulation layer 2 adopts a flame-retardant thermal insulation material, that is, the thermal insulation layer is also a flame-retardant layer, which isolates the heat generated by the heat source layer 1 from the outside world to achieve thermal insulation and flame retardancy; the protective layer 3 is adhered to the thermal insulation layer 2, and the protective layer 3 adopts salt-alkali resistant, corrosion-resistant, oil-resistant, water-resistant, and high-temperature resistant materials to isolate the thermal insulation layer 2 from the outside world to prevent rainwater, ice and snow from invading.

[0023] In the first embodiment, the connection structure is arranged on the protective layer 3, and one end of the protective layer 3 in the winding direction protrudes from the thermal insulation layer 2 and the heat source layer 1. The connection structure includes Velcro 8 respectively arranged at the two ends of the protective layer 3 in the winding direction. The round hair surface and the burr surface of the Velcro 8 fully contact to fix the antifreeze and heat preservation device of the wellbore equipment on the wellbore equipment 7. Both ends of the length direction of the protective layer 3 protrude from the thermal insulation layer 2 and the heat source layer 1. The connection structure also includes bundling holes 4 arranged at both ends of the length direction of the protective layer. There are multiple bundling holes 4 and they are arranged at intervals in the winding direction. The bundling holes 4 and Velcro 8 are both used to fix the antifreeze and heat preservation device of the wellbore equipment on the wellbore equipment 7 and to install and disassemble the antifreeze and heat preservation device of the wellbore equipment as a whole.

[0024] In the first embodiment, one end of the temperature control digital display device 5 is connected to the heat source layer 1, and the other end is connected to the plug 6, which can be connected to a power source to achieve a conductive connection between the temperature control digital display device and the heat source layer and to control and display the temperature of the wellbore equipment antifreeze and insulation device. The temperature control digital display device 5 includes a transformer device matched with the temperature control digital display device 5 to meet the voltage level requirements of 12V\24V\36V\110V\220V.

[0025] In the first embodiment of the present invention, the composite layered structure is fixedly installed on the wellbore equipment 7 that needs antifreeze and heat preservation through the bundling holes 4 and the Velcro 8. After the heat source layer 1 is powered on, the temperature is displayed and a certain amount of heat is provided to the wellbore equipment 7. The wellbore equipment antifreeze and heat preservation device can be installed on the wellbore pipeline in sequence with multiple pieces wrapped around it for antifreeze and heat preservation. If a piece is damaged, the damaged wellbore equipment antifreeze and heat preservation device can be disassembled and replaced to improve the insulation and antifreeze efficiency. By transposing the temperature control digital display, it is checked whether each piece is working properly. After replacing the piece of the wellbore equipment antifreeze and heat preservation device that cannot work properly, the wellbore equipment can be antifreeze and heat preservation again. The interchangeable design improves the utilization rate of the device. When the device is not in use, it can be recycled and stored, and can be reused to reduce waste.

[0026] Of course, the antifreeze and heat preservation device for wellbore equipment of the present utility model is not limited to the above-mentioned embodiments. The following also lists several other implementation methods of the antifreeze and heat preservation device for wellbore equipment based on the design concept of the present utility model.

[0027] For example, in other embodiments, different from the above-mentioned embodiment 1, a plurality of hidden buckles that can cooperate with each other are respectively provided at both ends of the composite layered structure in the winding direction, and bundling holes are provided at both ends of the composite layered structure in the length direction, and there are multiple bundling holes and they are arranged at intervals in the winding direction, and the antifreeze and heat preservation device of the wellbore equipment is bundled to the wellbore equipment through the bundling holes and the hidden buckles.

[0028] For example, in other embodiments, different from the above-mentioned embodiment 1, the connection structure only includes Velcro arranged at both ends of the winding direction of the protective layer, and one end of the protective layer in the winding direction slightly protrudes out of the insulation layer and the heat source layer. The antifreeze and heat preservation device of the wellbore equipment only needs to be fixed with Velcro at both ends of the winding direction of the protective layer.

[0029] For example, in other embodiments, different from the above-mentioned embodiment 1, the connection structure only includes bundling holes arranged at both ends of the length direction of the protective layer, there are multiple bundling holes and they are arranged at intervals in the winding direction, both ends of the length direction of the protective layer protrude from the insulation layer and the heat source layer, and the wellbore equipment antifreeze and heat preservation device only uses the bundling holes at both ends of the length direction of the protective layer for bundling and fixing.

[0030] For example, in other embodiments, different from the above-mentioned embodiment 1, the connection structure includes zippers respectively arranged at both ends of the protective layer in the winding direction, and one end of the protective layer in the winding direction slightly protrudes from the thermal insulation layer and the heat source layer, that is, after the double-row teeth of the zipper are engaged, the protruding protective layer cover is arranged on the zipper.

[0031] For example, in other embodiments, different from the above-mentioned embodiment 1, the connection structure also includes strapping straps arranged at both ends of the length direction of the protective layer, the strapping straps are arranged along the winding direction of the protective layer, the strapping straps are longer than the winding width of the protective layer, and the wellbore equipment antifreeze and insulation device is bundled to the wellbore equipment with the strapping straps.

[0032] For example, in other embodiments, different from the above-mentioned embodiment 1, the heat source layer, the thermal insulation layer and the protective layer are connected by zippers, that is, a zipper is set between the thermal insulation layer and the heat source layer, and a zipper is set between the protective layer and the thermal insulation layer, so as to form a composite layer structure with the heat source layer, the thermal insulation layer and the protective layer.

[0033] For example, in other implementations, different from the above-mentioned embodiment 1, the temperature control digital display device is not only used to test and control the surface temperature of the heating layer and the heat source layer, but is also configured to monitor the temperature of the insulation layer, so that it can be intuitively observed from the outside whether the insulation effect is appropriate.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wellbore equipment antifreeze and heat preservation device, characterized in that: The invention comprises a heat source layer (1), a heat insulation layer (2) and a protective layer (3), wherein the heat source layer (1) is an electric heating layer, and the heat insulation layer (2) and the protective layer (3) are sequentially covered on the outer side of the heat source layer (1) to form an integral composite layer structure, wherein the composite layer structure is provided with a connection structure for detachably mounting on the wellbore equipment (7) when the wellbore equipment (7) is wrapped around the wellbore equipment (7).

2. The antifreeze and heat preservation device for wellbore equipment according to claim 1 is characterized in that: The connection structure is arranged on the protective layer (3).

3. The antifreeze and heat preservation device for wellbore equipment according to claim 2 is characterized in that: One end of the protective layer (3) in the winding direction protrudes from the thermal insulation layer (2) and the heat source layer (1), and the connection structure comprises Velcro (8) respectively arranged at two ends of the protective layer (3) in the winding direction, and the round hair surface and the burr surface of the Velcro (8) are in full contact to fix the wellbore equipment antifreeze and thermal insulation device on the wellbore equipment (7).

4. The antifreeze and heat preservation device for wellbore equipment according to claim 3 is characterized in that: Both ends of the protective layer (3) in the length direction are protruding from the thermal insulation layer (2) and the heat source layer (1), and the connection structure further comprises binding holes (4) arranged at both ends of the protective layer (3) in the length direction, and there are a plurality of binding holes (4) arranged at intervals in the winding direction.

5. The antifreeze and heat preservation device for wellbore equipment according to any one of claims 1 to 4, characterized in that: The thermal insulation layer (2) is adhered to the heat source layer (1), and the protective layer (3) is adhered to the thermal insulation layer (2).

6. The antifreeze and heat preservation device for wellbore equipment according to claim 5 is characterized in that: The thermal insulation layer (2) is a flame retardant layer.

7. The antifreeze and heat preservation device for wellbore equipment according to any one of claims 1 to 4, characterized in that: The heat source layer (1) adopts an electric heating device, and the electric heating device is an electric heating belt or a silicone rubber heating sheet.

8. The antifreeze and heat preservation device for wellbore equipment according to claim 1 is characterized in that: The wellbore equipment antifreeze and heat preservation device comprises a temperature control digital display device (5), which is electrically connected to the heat source layer (1) and is located outside the composite layer structure, and is used to control and observe the temperature of the heat source layer (1).

9. The antifreeze and heat preservation device for wellbore equipment according to claim 8 is characterized in that: The temperature control digital display device (5) comprises a voltage transformer matched with the temperature control digital display device (5).

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