Oil pipe wax cleaning device and method

Abstract

The present application relates to the technical field of oilfield exploitation, and in particular to an oil pipe wax cleaning device and method. The oil pipe wax cleaning device is used to clean wax from the oil pipe of the oil production equipment, and the oil pipe wax cleaning device includes a pipeline assembly, a drive assembly and a liquid injection assembly; the pipeline assembly includes a pipeline, a first valve body and a plurality of second valve bodies, the first valve body is arranged at one end of the pipeline, and the plurality of second valve bodies are arranged in sequence along the length direction of the pipeline, and the pipeline is used to be placed into the oil pipe; the drive assembly connects the end of the pipeline away from the first valve body, and the drive assembly is used to drive the pipeline to move in the oil pipe; the liquid injection assembly connects the end of the pipeline away from the first valve body, and the liquid injection assembly is used to input fluid into the pipeline. In the above manner, wax deposition on the oil pipe can be prevented and wax can be cleaned from the oil pipe, thereby ensuring the working stability of the oil production equipment and extending the service life of the oil production equipment.

Description

Technical Field

[0001] The present application relates to the technical field of oilfield exploitation, and in particular to an oil pipe wax cleaning device and method. Background Art

[0002] In oil production, as the temperature and pressure of oil decrease and gas precipitates, the paraffin in the oil will precipitate and adhere to the inner wall of the oil pipe of the oil production equipment, resulting in wax deposition. If wax deposition is not treated, it will reduce the flow rate of the oil pipe and the output of the oil production equipment, and at the same time increase the load of the oil production equipment, causing production accidents.

[0003] In the prior art, wax removal is usually achieved by returning to the factory for wax removal, hot washing for wax removal, manual wax removal, chemical wax removal, and biological wax removal. When the oil pipe is blocked by wax, the equipment can only be stopped and returned to the factory for wax removal, which affects the working stability of the oil production equipment. When the oil pipe is blocked, the equipment will be damaged and the life of the equipment will be shortened. Summary of the invention

[0004] The embodiments of the present application aim to provide an oil pipe wax cleaning device and method, so as to at least improve the working stability of the oil production equipment and extend the service life of the oil production equipment.

[0005] In order to solve the above technical problems, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides an oil pipe wax cleaning device for cleaning oil pipes of oil production equipment, the oil pipe wax cleaning device comprising a pipeline assembly, a drive assembly and an injection assembly; the pipeline assembly comprises a pipeline, a first valve body and a plurality of second valve bodies, the first valve body being arranged at one end of the pipeline, the plurality of second valve bodies being arranged in sequence and spaced apart along the length direction of the pipeline, and the pipeline being used to be placed into the oil pipe; the drive assembly is connected to an end of the pipeline away from the first valve body, and the drive assembly is used to drive the pipeline to move in the oil pipe; the injection assembly is connected to an end of the pipeline away from the first valve body, and the injection assembly is used to input fluid into the pipeline.

[0007] In some embodiments, the opening pressure of the first valve body is respectively less than the opening pressures of the plurality of second valve bodies.

[0008] In some embodiments, the opening pressures of the plurality of second valve bodies increase sequentially from an end close to the first valve body toward an end away from the first valve body.

[0009] In some embodiments, the drive assembly includes a bracket, a reel and a drive member; the reel is rotatably disposed on the bracket, and one end of the pipeline facing away from the first valve body is wound around the reel; the drive member is connected to the reel, and the drive member can drive the reel to rotate relative to the bracket to drive the pipeline to move in the oil pipe.

[0010] In some embodiments, the reel includes a connected water inlet and a water outlet, and the water outlet is connected to the pipeline; the drive assembly also includes a joint, the two ends of the joint are respectively connected to the water inlet and the injection assembly, and the reel can rotate relative to the joint.

[0011] In some embodiments, the drive assembly also includes a first guide wheel, which is rotatably disposed on the bracket, the rotation axis of the first guide wheel is parallel to the rotation axis of the reel, the first guide wheel is disposed on one side of the reel in a radial direction, and the pipeline is wound around the reel after passing through the first guide wheel.

[0012] In some embodiments, the drive assembly also includes a second guide wheel, the rotation axis of the second guide wheel is parallel to the rotation axis of the reel, the second guide wheel is arranged on one side of the reel along the radial direction, and the second guide wheel is used to guide the pipeline from above the oil pipe to the reel.

[0013] In some embodiments, the injection assembly includes a liquid storage cylinder, which is connected to the pipeline, and the injection assembly also includes a heater and / or a pressurizer; the heater is connected to the liquid storage cylinder; the pressurizer is connected to the liquid storage cylinder.

[0014] In some embodiments, the number of the pipeline components and the number of the drive components are respectively several, each of the pipeline components is connected to a corresponding one of the drive components, and several of the pipeline components are respectively connected to the injection components.

[0015] In some embodiments, the oil pipe wax cleaning device further includes a plurality of third valve bodies, and one end of the pipeline of each pipeline assembly that is away from the first valve body is connected to a corresponding one of the third valve bodies.

[0016] In some embodiments, the oil pipe wax cleaning device also includes a controller, which is electrically connected to the first valve body, the plurality of second valve bodies, the drive assembly and the injection assembly, respectively, and the controller can control the first valve body, the plurality of second valve bodies, the drive assembly and the injection assembly to open or close, respectively.

[0017] In a second aspect, an embodiment of the present application provides a method for clearing wax from an oil pipe, which is based on an oil pipe clearing device for clearing wax from an oil pipe, and the method includes: a pipeline component is placed into the oil pipe; a first valve body and a plurality of second valve bodies are closed, and fluid is input into the pipeline; detecting whether the oil pipe has been cleared of wax; if not, the first valve body is opened to allow the fluid in the pipeline to be discharged to the oil pipe through the first valve body; if the pressure of the fluid in the pipeline reaches a first preset pressure, the plurality of second valve bodies are opened to allow the fluid in the pipeline to be discharged to the oil pipe through the plurality of second valve bodies; if the pressure of the fluid in the pipeline reaches a second preset pressure, the pipeline is driven to move toward the opening direction of the oil pipe; wherein the first preset pressure is less than the second preset pressure.

[0018] In some embodiments, inputting the fluid into the pipeline includes: heating the fluid and then inputting it into the pipeline.

[0019] In some embodiments, opening the first valve body comprises: pressurizing the fluid in the pipeline to an opening pressure of the first valve body, and the first valve body opens.

[0020] In some embodiments, the opening of the plurality of second valve bodies includes: when the fluid in the pipeline is pressurized to an opening pressure of a corresponding one of the second valve bodies, the corresponding one of the second valve bodies is opened.

[0021] In some embodiments, the detecting whether the wax cleaning of the oil pipe is completed includes: detecting the working current of the oil production equipment, and if the working current is greater than a preset current, it is determined that the wax cleaning of the oil pipe is not completed.

[0022] The oil pipe wax cleaning device and method of the embodiment of the present application, by passing a pipe through the oil pipe, the liquid injection component inputs fluid into the pipe to heat the pipe, thereby preventing wax from forming on the oil pipe and cleaning the wax of the oil pipe; a first valve body and a plurality of second valve bodies are arranged on the pipe, so that the fluid in the pipe can be discharged into the oil pipe, thereby cleaning the wax inside the oil pipe, and the driving component can drive the pipe to move in the oil pipe, further improving the wax cleaning effect of the oil pipe, thereby ensuring the working stability of the oil production equipment and extending the service life of the oil production equipment.

[0023] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0025] Figure 1 It is a structural schematic diagram of the oil pipe wax cleaning device and the oil pipe in the embodiment of the present application;

[0026] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the middle drive assembly;

[0027] Figure 3 yes Figure 1 A schematic plan view of the mid-drive assembly;

[0028] Figure 4 is a flow chart of a method for removing wax from an oil pipe according to an embodiment of the present application;

[0029] Figure 5 yes Figure 4 Detailed flow chart of the wax removal method for Sinopec pipes.

[0030] The reference numerals in the specific implementation manner are as follows:

[0031] 100. Oil pipe wax cleaning device;

[0032] 1. Pipeline assembly; 11. Pipeline; 12. First valve body; 13. Second valve body;

[0033] 2. driving assembly; 21. bracket; 22. reel; 221. water outlet; 23. driving member; 24. first guide wheel; 25. second guide wheel; 26. joint;

[0034] 3. Liquid injection assembly; 31. Pressurizer; 32. Heater; 33. Liquid storage cylinder; 34. Connecting pipe;

[0035] 4. Controller;

[0036] 5. The third valve body;

[0037] 200. Oil production equipment; 210. Oil pipe; 220. Fluid pump; 230. Control cabinet. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. It should be noted that when an element is described as "fixed on" another element, it can be directly on another element, or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element, or there can be one or more centered elements therebetween. It should be noted that, if there is no conflict, the various features in the embodiments of the present application can be combined with each other, all within the scope of protection of the present application. In addition, although the functional modules are divided in the device schematic diagram and the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in a different order from the module division in the device schematic diagram or the flow chart.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0040] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0041] In the description of the embodiments of the present application, the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meanings and therefore cannot be understood as limiting the scope of protection of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0042] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0043] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0044] See also Figure 1 The embodiment of the present application provides an oil pipe wax removal device 100, which is used to remove wax from an oil pipe 210 of an oil production equipment 200. To facilitate understanding of the technical solution and working principle of the oil pipe wax removal device 100, the structure of the oil production equipment 200 is briefly described:

[0045] See also Figure 1 The oil production equipment 200 includes an oil pipe 210, a fluid pump 220 and a control cabinet 230. The fluid pump 220 is connected to the oil pipe 210, and the fluid pump 220 can extract the fluid in the well and transport the fluid to the well through the oil pipe 210, thereby realizing oil production. The control cabinet 230 is electrically connected to the fluid pump 220, and the control cabinet 230 can detect the working current of the fluid pump 220 when it is working. When the fluid pump 220 is working, if the resistance encountered by the fluid pump 220 is large, the working current of the fluid pump 220 will increase, that is, by detecting the working current of the fluid pump 220, the severity of wax deposition in the oil pipe 210 can be judged.

[0046] The specific structure of the oil pipe wax cleaning device 100 is described in detail below.

[0047] The oil pipe wax removal device 100 includes a pipe assembly 1, a drive assembly 2 and a liquid injection assembly 3. The pipe assembly 1 includes a pipe 11, a first valve body 12 and a plurality of second valve bodies 13. The first valve body 12 is arranged at one end of the pipe 11, and the plurality of second valve bodies 13 are arranged in sequence along the length direction of the pipe 11. The pipe 11 is used to be placed in the oil pipe 210. The drive assembly 2 is connected to the end of the pipe 11 away from the first valve body 12, and the drive assembly 2 is used to drive the pipe 11 to move in the oil pipe 210. The liquid injection assembly 3 is connected to the end of the pipe 11 away from the first valve body 12, and the liquid injection assembly 3 is used to input fluid into the pipe 11.

[0048] For the above pipeline component 1, see Figure 1 The outer diameter of the pipeline component 1 is smaller than the inner diameter of the oil pipe 210 , so the pipeline component 1 can be inserted into the oil pipe 210 , and there is a gap between the pipeline component 1 and the oil pipe 210 for fluid to pass through, which does not affect the oil production work of the oil pipe 210 .

[0049] As for the first valve body 12 and the second valve body 13, the first valve body 12 and the second valve body 13 can be opened so that the fluid in the pipeline 11 enters the oil pipe 210 to flush the wax deposits in the oil pipe 210, thereby improving the wax removal efficiency. Among them, the first valve body 12 is arranged at the end of the pipeline 11 facing downhole. When the oil pipe 210 is blocked with wax, the first valve body 12 can be opened to flush from below the wax blockage, so that the oil pipe 210 is pressurized to flush the wax deposits, thereby improving the efficiency of cleaning the oil pipe 210. Several second valve bodies 13 are all arranged on the side of the first valve body 12 facing uphole, and several second valve bodies 13 are arranged in sequence at intervals, so that different positions of the oil pipe 210 can be flushed.

[0050] In some embodiments, there are multiple first valve bodies 12, which are arranged at intervals around the circumference of the pipeline 11. The multiple first valve bodies 12 surrounding the pipeline 11 can be opened simultaneously to spray fluid into the oil pipe 210, thereby improving the wax removal efficiency.

[0051] In some embodiments, a plurality of second valve bodies 13 form a plurality of second valve body groups, and the plurality of second valve body groups are sequentially spaced along the length direction of the pipeline 11, and each second valve body group includes a plurality of second valve bodies 13. In each second valve body group, the plurality of second valve bodies 13 are spaced along the circumference of the pipeline 11, and the plurality of second valve bodies 13 can be opened simultaneously to spray fluid into the oil pipe 210, further improving the wax removal efficiency.

[0052] For the above drive assembly 2, see Figure 2 and Figure 3 The driving assembly 2 includes a bracket 21, a reel 22 and a driving member 23. The reel 22 is rotatably arranged on the bracket 21, and one end of the pipeline 11 away from the first valve body 12 is wound on the reel 22; the driving member 23 is connected to the reel 22, and the driving member 23 can drive the reel 22 to rotate relative to the bracket 21, so as to wind one end of the pipeline 11 on the reel 22, and drive the other end of the pipeline 11 to move in the oil pipe 210. The driving member 23 can also drive the reel 22 to reverse, unwind the pipeline 11 to the oil pipe 210, so that the pipeline 11 is inserted into the oil pipe 210. By driving the reel 22 to rotate by the driving member 23, the winding and unwinding of the pipeline 11 can be realized.

[0053] The pipe 11 may be made of a flexible material, such as a rubber pipe, a flexible steel pipe, etc., so that the pipe 11 can be easily wound onto the reel 22 .

[0054] The driving member 23 is a servo motor, which can drive the reel 22 to rotate and control the rotation angle of the reel 22, thereby passing the pipeline 11 through the preset position of the oil pipe 210. It can be understood that in some other embodiments, the driving member 23 can also be other structures, such as a stepping motor, a rotary cylinder, etc., which are not limited here.

[0055] In some embodiments, see Figure 2 and Figure 3 The reel 22 includes a water inlet (not shown) and a water outlet 221 which are connected to each other, and the water outlet 221 is connected to the pipeline 11; the driving assembly 2 also includes a joint 26, and the two ends of the joint 26 are connected to the water inlet and the injection assembly 3 respectively, and the reel 22 can rotate relative to the joint 26. Specifically, the interior of the reel 22 is provided with a channel (not shown) for the passage of fluid, and the water inlet and the water outlet 221 are respectively arranged at the two ends of the channel. Among them, the water inlet is arranged on the end face of the reel 22, which is convenient for the installation of the joint 26, and can prevent the joint 26 and the injection assembly 3 from interfering with the reel 22 when the reel 22 rotates. The water outlet 221 is arranged on the outer peripheral surface of the reel 22, and one end of the pipeline 11 is connected to the water outlet 221, which is convenient for winding the pipeline 11 around the outer peripheral surface of the reel 22.

[0056] In some embodiments, see Figure 2 and Figure 3 The driving assembly 2 further includes a first guide wheel 24, which is rotatably disposed on the bracket 21, and whose rotation axis is parallel to the rotation axis of the reel 22. The first guide wheel 24 is disposed on one side of the reel 22 in the radial direction, and the pipe 11 is wound around the reel 22 after passing through the first guide wheel 24. The first guide wheel 24 can change the direction of the pipe 11 and can support the pipe 11, so that the direction of the pipe 11 is more reasonable, thereby reducing the friction force when the reel 22 is wound and unwound.

[0057] In some embodiments, see Figure 1 The driving assembly 2 further includes a second guide wheel 25, the rotation axis of the second guide wheel 25 is parallel to the rotation axis of the reel 22, the second guide wheel 25 is arranged on one side of the reel 22 in the radial direction, and the second guide wheel 25 is used to guide the pipeline 11 from the top of the oil pipe 210 to the reel 22. In practical applications, the reel 22 is generally arranged on one side of the oil pipe 210 in the radial direction, and the second guide wheel 25 is arranged above the oil pipe 210, so that the pipeline 11 extending from the oil pipe 210 can be guided to the reel 22, thereby facilitating the reeling and unreeling of the pipeline 11 and preventing the pipeline 11 from being entangled or damaged.

[0058] In some embodiments, the number of pipeline components 1 and the number of drive components 2 are respectively several, each pipeline component 1 is connected to a corresponding drive component 2, and several pipeline components 1 are respectively connected to injection components 3. Therefore, the oil pipe wax removal device 100 can remove wax from multiple oil pipes 210 at the same time, and multiple pipeline components 1 can share one injection component 3 and one controller, which is conducive to reducing the use cost and realizing common control.

[0059] In some embodiments, see Figure 2 and Figure 3 The oil pipe wax cleaning device also includes a plurality of third valve bodies 5, and one end of the pipe 11 of each pipeline assembly 1 that is away from the first valve body 12 is connected to a corresponding third valve body 5. Specifically, the third valve body 5 is arranged between the injection assembly 3 and the joint 26, so that the fluid in the injection assembly 3 can be controlled to enter the pipeline assembly 1. When there are multiple pipeline assemblies 1, by controlling each third valve body 5 separately, it is possible to independently control whether each pipeline assembly 1 passes fluid. In some other embodiments, the third valve body 5 can also be directly arranged on the pipeline 11 or the injection assembly 3, which is not limited here.

[0060] For the above mentioned injection assembly 3, please refer to Figure 1 , the injection assembly 3 includes a pressurizer 31 and a heater 32. The pressurizer 31 is connected to the pipeline 11, and the pressurizer 31 is used to pressurize the fluid flowing into the pipeline 11; the heater 32 is connected to the pipeline 11, and the heater 32 is used to heat the fluid flowing into the pipeline 11. Among them, the pressurizer 31 can be connected between the heater 32 and the pipeline 11, that is, the fluid is heated first and then pressurized. The heater 32 can be set according to actual needs, such as a cast aluminum heater, a cup heater, an aluminum plate stacked heater, a ceramic heater, an infrared heater, a glass tube heater and an electromagnetic heater, etc., to heat the fluid passing therein. The pressurizer 31 can be set according to actual needs, such as including a spiral booster pump, a turbocharger pump, etc., to increase the pressure of the fluid when the fluid is transported to the pipeline assembly 1. It can be understood that the injection assembly 3 may not include a pressurizer 31 and / or a heater 32, that is, the fluid is heated or pressurized by an external device.

[0061] In some embodiments, the fluid can be heated to a preset temperature by the heater 32, and then the pressurizer 31 is turned on to pressurize the fluid to ensure that the fluid entering the pipeline 11 has a high temperature. The fluid can be a liquid, a gas, or a liquid-gas mixture, such as water, oil, steam, an oil-gas mixture, etc., and it only needs to be able to conduct heat to the pipeline 11.

[0062] In some embodiments, see Figure 1 The liquid injection assembly 3 includes a liquid storage cylinder 33, which is connected to the pipeline 11. The liquid storage cylinder 33 is also connected to the pressurizer 31 and the heater 32. The liquid storage cylinder 33 is used to store fluid to provide fluid to the pressurizer 31 and the heater 32.

[0063] In some embodiments, please refer to Figure 1The injection assembly 3 further includes a plurality of connecting tubes 34, one end of which is connected to the liquid storage cylinder 33, and the other end of which is connected to the joint 26. The pressurizer 31 and the heater 32 are respectively connected to the middle of the connecting tube 34, so that the fluid in the liquid storage cylinder 33 can flow into the pressurizer 31 and the heater 32 through the connecting tube 34, and the fluid in the pressurizer 31 and the heater 32 can flow into the pipeline 11 through the connecting tube 34, the joint 26, and the channel in the reel 22 in sequence. It can be understood that in some other embodiments, the pressurizer 31 and the heater 32 can also be arranged at one end of the connecting tube 34, and the liquid storage cylinder 33 can be arranged in the middle of the connecting tube 34, so that the fluid can be heated and / or pressurized and stored in the liquid storage cylinder 33. The connection sequence of the pressurizer 31, the heater 32, and the liquid storage cylinder 33 can be set according to actual needs and is not limited here.

[0064] In some embodiments, see Figure 1 The oil pipe wax removal device 100 further includes a controller 4, which is electrically connected to the drive assembly 2 and the injection assembly 3. The controller 4 can control the drive assembly 2 and the injection assembly 3 to be turned on or off. The working state of the drive assembly 2 and the injection assembly 3 can be controlled, for example, the drive assembly 2 drives the pipeline 11 to move in the oil pipe 210, and the injection assembly 3 is controlled to input fluid into the pipeline 11. It can be understood that in some other embodiments of the present application, the controller 4 can be omitted, and the drive assembly 2 and the injection assembly 3 can be manually controlled, which does not affect the function of the oil pipe wax removal device 100.

[0065] In some embodiments, the control cabinet 230 includes a controller 4, that is, the controller 4 is disposed in the control cabinet 230, and the controller 4 is electrically connected to the fluid pump 220, the drive assembly 2, and the injection assembly 3, respectively, and the fluid pump 220, the drive assembly 2, and the injection assembly 3 are integrated and controlled by the controller 4. The controller 4 can be used to control the fluid pump 220 to work, and to obtain the working current of the fluid pump 220. The controller 4 can obtain the working current of the fluid pump 220, and then judge the severity of wax deposition in the oil pipe 210, and can control the driving assembly 2 and the injection assembly 3 to work according to the severity of wax deposition in the oil pipe 210, so as to implement the corresponding wax removal scheme.

[0066] When the wax deposition in the oil pipe 210 is relatively mild, it is only necessary to input fluid into the pipe 11 through the injection assembly 3 to heat the pipe 11 to melt the wax blocks in the oil pipe 210; when the wax deposition in the oil pipe 210 is relatively serious, the first valve body 12 and the second valve body 13 can be opened to flush the oil pipe 210; when the wax deposition in the oil pipe 210 is particularly serious, the pipe 11 can be driven to move in the oil pipe 210 through the drive assembly 2 while inputting fluid into the oil pipe 210, so that the first valve body 12 and the second valve body 13 on the pipe 11 are flushed close to the wax deposition area, thereby improving the wax removal effect. Among them, the power of the heating fluid can also be controlled according to the severity of the wax deposition in the oil pipe 210, which can not only reduce the energy consumption generated by the heating fluid, but also ensure the wax removal effect on the oil pipe 210.

[0067] It is understandable that in some other embodiments, the controller 4 may not be set in the control cabinet 230, for example, it may be set on the fluid pump 220 or in the drive component 2. The controller 4 is electrically connected to the control cabinet 230. The setting method of the controller 4 can be selected according to actual needs and is not limited here.

[0068] It can be understood that in some other embodiments, the number of controllers 4 can be multiple. For example, the fluid pump 220, the drive component 2, and the injection component 3 are each provided with a separate controller 4, and the multiple controllers 4 are respectively electrically connected to the control cabinet 230. The number of controllers 4 can be selected according to actual needs and is not limited here.

[0069] In some embodiments, the first valve body 12 and the plurality of second valve bodies 13 are respectively pressure valves, i.e. valves that can be opened automatically under a certain pressure. When the pressure of the fluid in the pipeline 11 is greater than or equal to the opening pressure of the first valve body 12, the first valve body 12 will automatically open, so that the fluid will be ejected from the first valve body 12; when the pressure of the fluid in the pipeline 11 is greater than or equal to the opening pressure of the plurality of second valve bodies 13, the plurality of second valve bodies 13 will automatically open, so that the fluid will be ejected from the second valve body 13.

[0070] It can be understood that in some other embodiments, the first valve body 12 and the plurality of second valve bodies 13 can also be electronic valves, and the controller 4 is electrically connected to the first valve body 12 and the plurality of second valve bodies 13, and the first valve body 12 and the plurality of second valve bodies 13 can be controlled to open or close respectively through the controller 4.

[0071] In some embodiments, the opening pressures of the plurality of second valve bodies 13 are greater than the opening pressure of the first valve body 12, and the opening pressures of the plurality of second valve bodies 13 increase in sequence from the end close to the first valve body 12 toward the end away from the first valve body 12. Specifically, when cleaning the oil pipe 210, the first valve body 12 is first opened to input fluid into the oil pipe 210. If the wax deposited area is not washed through, the pressure of the fluid in the oil pipe 210 will gradually increase, and then the pressure of the fluid in the pipeline 11 will also gradually increase; as the pressure of the fluid in the pipeline 11 increases, the plurality of second valve bodies 13 are also automatically opened in sequence from bottom to top, gradually enhancing the flushing effect on the oil pipe 210 until the oil pipe 210 is washed through. When the oil pipe 210 is washed through, the pressure of the fluid in the pipeline 11 decreases, and the first valve body 12 and the plurality of second valve bodies 13 are automatically closed in sequence from top to bottom. If the second valve body 13 at the top is finally opened, it means that the fluid cannot wash through the oil pipe 210, and the driving assembly 2 can be used to drive the pipeline 11 to move in the oil pipe 210 to clean the wax from the oil pipe 210. It should be noted that the above-mentioned direction from bottom to top is from the direction close to the first valve body 12 to the direction away from the first valve body 12; the above-mentioned direction from top to bottom is from the direction away from the first valve body 12 to the direction close to the first valve body 12; the above-mentioned second valve body at the top is the second valve body farthest from the first valve body 12.

[0072] Since the liquid in the pipe 11 is flowing, the pressure of the fluid in the pipe 11 may not increase gradually along the gravity direction. By making the opening pressure of the first valve body 12 smaller than the opening pressure of the second valve body 13, the problem that the first valve body 12 is not opened first can be improved. In addition, by making the opening pressures of the second valve bodies 13 increase sequentially from bottom to top, the problem that the second valve bodies 13 are not opened sequentially from bottom to top can be improved.

[0073] It can be understood that, in some other embodiments, the opening pressure of the first valve body 12 and the opening pressure of several second valve bodies 13 may also be the same, or the opening pressure of the first valve body 12 is greater than the opening pressure of several second valve bodies 13, and the opening pressure of the first valve body 12 and the opening pressure of several second valve bodies 13 can be set according to actual needs and are not limited here.

[0074] In other embodiments, a heater is provided inside the pipe wall of the pipe 11, and the fluid can be heated after being input into the pipe 11, or the pipe 11 can be directly heated by the heater. The specific heating method of the pipe 11 is not limited herein.

[0075] The present application also provides a method for removing wax from an oil pipe, which removes wax from an oil pipe 210 based on an oil pipe removing wax device 100. Figure 4 and Figure 5 , the oil pipe wax removal method includes:

[0076] S1: The pipeline 11 is placed into the oil pipe 210, the first valve body 12 and the plurality of second valve bodies 13 are closed, and fluid is input into the pipeline 11;

[0077] S2: Check whether the oil pipe 210 has been dewaxed;

[0078] If not, execute method S3;

[0079] S3: the first valve body 12 is opened, so that the fluid in the pipeline 11 is discharged to the oil pipe 210 through the first valve body 12;

[0080] S4: If the pressure of the fluid in the pipeline 11 reaches the first preset pressure, the plurality of second valve bodies 13 are opened, so that the fluid in the pipeline 11 is discharged to the oil pipe 210 through the plurality of second valve bodies 13;

[0081] S5: If the pressure of the fluid in the pipeline 11 reaches the second preset pressure, the pipeline 11 is driven to move toward the opening direction of the oil pipe 210 .

[0082] In some embodiments, the method of S1 comprises:

[0083] S11: the driving component 2 puts the pipeline 11 into the oil pipe 210, the first valve body 12 and the plurality of second valve bodies 13 are closed, and the injection component 3 heats the fluid;

[0084] S12: Open the third valve body 5 to input the heated fluid into the pipeline 11.

[0085] Specifically, the driving member 23 drives the reel 22 to rotate so as to put the pipe 11 into the oil pipe 210. The first valve body 12 and the plurality of second valve bodies 13 are all in a closed state. The heater 32 of the injection assembly 3 heats the fluid to a preset temperature. The third valve body 5 is opened so that the heated fluid is input into the pipe 11 to heat the pipe 11, thereby clearing the wax from the oil pipe 210. The preset temperature can be set according to actual needs and is not limited here. It is understandable that in some other embodiments, a heater 32 can also be set in the pipe 11 to heat the fluid after inputting it into the pipe 11.

[0086] In some embodiments, the method of S2 includes:

[0087] S21: After a preset time, detecting the working current of the oil production equipment 200;

[0088] S22: Determine whether the working current is greater than the preset current;

[0089] If the working current is less than or equal to the preset current, it is determined that the wax cleaning of the oil pipe 210 is completed, and the wax cleaning is ended;

[0090] If the working current is greater than the preset current, it is determined that the wax cleaning of the oil pipe 210 is not completed, and method S3 is executed.

[0091] Specifically, after the heated fluid heats the pipeline 11 for a preset time, the controller 4 detects the working current of the fluid pump 220 and determines whether the working current is greater than the preset current; if the oil pipe 210 is not blocked by wax, and the working current of the fluid pump 220 is less than or equal to the preset current, it is determined that the wax removal of the oil pipe 210 is completed; if the oil pipe 210 is blocked by wax, the working current of the fluid pump 220 will increase, that is, the working current of the fluid pump 220 is greater than the preset current, and it is determined that the wax removal of the oil pipe 210 is not completed. Among them, the preset current is greater than or equal to the working current, the preset current can be set according to actual needs, and the preset time can be set according to actual needs, which are not limited here.

[0092] In some embodiments, the severity of wax deposition in the oil pipe 210 can also be determined by the detected working current. The greater the working current, the more severe the wax deposition in the oil pipe 210. The corresponding wax removal method can be selected according to the severity of wax deposition in the oil pipe 210, that is, one of the methods S3, S4, and S5 can be selected, or a combination of two of the methods S3, S4, and S5 can be selected, or methods S3, S4, and S5 can be selected to be executed simultaneously.

[0093] In some embodiments, after the heated fluid heats the pipe 11 for a preset time, the controller 4 continuously detects the working current of the fluid pump 220; within the preset detection time, if the working current is always less than or equal to the preset current, it is determined that the wax removal of the oil pipe 210 is completed; if the working current is continuously greater than the preset current, it is determined that the wax removal work cannot be completed by heating the pipe 11, and method S3 needs to be executed. Among them, the preset detection time can be set according to actual needs and is not limited here.

[0094] In some embodiments, the controller 4 detects the working current of the fluid pump 220, which can be performed simultaneously with the step of inputting the heated fluid into the pipeline 11. Specifically, when the heated fluid is input into the pipeline 11, the controller 4 continuously detects the working current of the fluid pump 220 within a preset detection time, and then determines whether the wax cleaning is completed.

[0095] In some embodiments, the method of S3 includes:

[0096] S31: the injection assembly 3 pressurizes the fluid in the pipeline 11;

[0097] S32: Detecting the pressure of the fluid in the pipeline 11 to determine whether the pressure of the fluid in the pipeline 11 reaches the opening pressure of the first valve body 12;

[0098] S33: If the pressure of the fluid in the pipeline 11 is greater than or equal to the opening pressure of the first valve body 12, the first valve body 12 is opened, and the fluid in the pipeline 11 is discharged into the oil pipe 210 through the first valve body 12;

[0099] If the fluid pressure in the pipeline 11 is lower than the opening pressure of the first valve body 12 , the first valve body 12 remains closed.

[0100] Specifically, the pressurized fluid is input into the pipeline 11 through the pressurizer 31, and the pressure of the fluid in the pipeline 11 is detected. If the fluid pressure in the pipeline 11 is less than the opening pressure of the first valve body 12, the first valve body 12 remains closed; the injection assembly 3 continues to pressurize the fluid in the pipeline 11 until the pressure of the fluid at the bottom of the pipeline 11 is greater than or equal to the opening pressure of the first valve body 12, then the first valve body 12 automatically opens, and the fluid continues to be introduced into the pipeline 11 and discharged into the oil pipe 210 through the first valve body 12 to flush the wax deposited in the oil pipe 210. The fluid discharged from the first valve body 12 to the oil pipe 210 can be the fluid heated by the injection assembly 3.

[0101] In some embodiments, after the method of S32, if the fluid pressure in the pipeline 11 is less than the opening pressure of the first valve body 12, it is determined that the wax cleaning of the oil pipe 210 is completed, and the wax cleaning is ended.

[0102] In some embodiments, the first valve body 12 is a pressure valve, and the pressure of the fluid in the pipeline 11 can be detected by the first valve body 12, that is, the first valve body 12 is preset with an opening pressure, and when the pressure of the fluid in the pipeline 11 is greater than the opening pressure of the first valve body 12, the fluid in the pipeline 11 pushes the valve core of the first valve body 12, so that the first valve body 12 automatically opens. It can be understood that in some other embodiments, a pressure detection device electrically connected to the first valve body 12 can also be provided, and the pressure of the fluid in the pipeline 11 can be detected by the pressure detection device, and the opening and closing of the first valve body 12 can be controlled.

[0103] In some embodiments, the fluid may be pressurized without using the pressurizer 31 , for example, by continuously introducing the fluid into the pipeline 11 to increase the pressure of the fluid in the pipeline 11 , thereby opening the first valve body 12 .

[0104] It is understandable that in some embodiments, method S1 can be performed periodically to achieve regular wax removal in the oil pipe 210. Specifically, the heated fluid is introduced into the pipeline 11 through the injection assembly 3 at intervals, thereby preventing or slowing down wax deposition in the oil pipe 210.

[0105] In some embodiments, in the method of S33, after the first valve body 12 is opened, the method further includes:

[0106] S331: Detect the pressure of the fluid in the pipeline 11 to determine whether the wax cleaning is completed;

[0107] If the pressure of the fluid in the pipeline 11 is less than the opening pressure of the first valve body 12, it is determined that the wax removal of the oil pipe 210 is completed, and the first valve body 12 is closed;

[0108] If the pressure of the fluid in the pipeline 11 is greater than or equal to the opening pressure of the first valve body 12, it is determined that the wax cleaning is not completed and the first valve body 12 remains open.

[0109] Specifically, if the wax cleaning of the oil pipe 210 is completed, the fluid in the oil pipe 210 is lifted to the well by the fluid pump 220, so that the pressure of the fluid in the pipeline 11 is reduced to less than the opening pressure of the first valve body 12, and the first valve body 12 is automatically closed; if the wax cleaning of the oil pipe 210 is not completed, the pressure of the fluid in the pipeline 11 will continue to be greater than or equal to the opening pressure of the first valve body 12, so that the first valve body 12 remains open.

[0110] In some embodiments, the method of S3 further includes:

[0111] S34: Determine whether the pressure of the fluid in the pipeline 11 reaches a first preset pressure;

[0112] If the pressure of the fluid in the pipeline 11 is less than the first preset pressure, it is determined that the wax cleaning work can be completed by opening the first valve body 12, and the wax cleaning is ended;

[0113] If the pressure of the fluid in the pipeline 11 is greater than or equal to the first preset pressure, it is determined that the wax cleaning operation cannot be completed, and method S4 is executed.

[0114] After the first valve body 12 is opened, fluid is continuously input into the oil pipe 210. If the oil pipe 210 is clogged with wax, the pressure inside the oil pipe 210 will increase, and the pressure of the fluid in the pipeline 11 will continue to increase to be greater than or equal to the first preset pressure. That is, if the wax removal work cannot be completed by flushing the oil pipe 210 by opening the first valve body 12, method S4 is executed.

[0115] In some embodiments, the method of S4 includes:

[0116] S41 : a plurality of second valve bodies 13 are opened, and the fluid in the pipeline 11 is discharged into the oil pipe 210 through the plurality of second valve bodies 13 .

[0117] Specifically, when the fluid pressure in the pipeline 11 rises to a value greater than or equal to the first preset pressure, the plurality of second valve bodies 13 are opened, and the fluid is continuously introduced into the pipeline 11 and discharged into the oil pipe 210 through the plurality of second valve bodies 13, so that the fluid in the pipeline 11 is discharged from all locations along the length direction of the oil pipe 210 to flush the interior of the oil pipe 210 for wax removal. By providing a plurality of second valve bodies 13, the fluid can be discharged near the wax deposited area of ​​the oil pipe 210 for flushing, so that the fluid at the wax deposited area can maintain temperature and pressure, thereby saving energy consumption and enhancing the wax removal effect. Among them, the first preset pressure is greater than or equal to the opening pressure of the plurality of second valve bodies 13.

[0118] In some embodiments, the method of S41 further includes:

[0119] S4101: setting the opening pressures of a plurality of second valve bodies 13 respectively;

[0120] S4102: When the fluid in the pipeline 11 is pressurized to the opening pressure of a corresponding second valve body 13, the corresponding second valve body 13 is opened.

[0121] Specifically, the plurality of second valve bodies 13 are all pressure valves. From the end close to the first valve body 12 toward the end away from the first valve body 12, the plurality of second valve bodies 13 include the first second valve body 13, the second second valve body 13, the third second valve body 13, and the Nth second valve body 13, which are arranged in sequence. The opening pressures of the plurality of second valve bodies 13 increase in sequence. When the pressure in the pipeline 11 rises to the first preset pressure, the first second valve body 13 automatically opens; if the wax cleaning in the oil pipe 210 is not completed, the fluid pressure in the pipeline 11 continues to rise to the opening pressure of the second second valve body 13, so that the second second valve body 13 automatically opens; if the wax cleaning in the oil pipe 210 is not completed, the fluid pressure in the pipeline 11 continues to rise to the opening pressure of the third second valve body 13, so that the third second valve body 13 automatically opens... until the fluid pressure in the pipeline 11 continues to rise to the opening pressure of the Nth second valve body 13, so that the Nth second valve body 13 automatically opens. The first preset pressure is equal to the opening pressure of a second valve body 13 closest to the first valve body 12, the opening pressures of several second valve bodies 13 are greater than or equal to the first preset pressure, and the opening pressure of the first valve body 12 is less than the first preset pressure.

[0122] It is understandable that in some other embodiments, the opening pressures of several second valve bodies 13 may also be the same, that is, the opening pressures of several second valve bodies 13 are equal to the first preset pressure. When the fluid pressure in the pipeline 11 is greater than or equal to the first preset pressure, several second valve bodies 13 are opened at the same time to clean the inside of the oil pipe 210.

[0123] It is understandable that, in some other embodiments, the opening pressure of several second valve bodies 13 may also be lower than the opening pressure of the first valve body 12, that is, several second valve bodies 13 are opened first to flush the oil pipe 210, and when several second valve bodies 13 are unable to complete the wax removal work on the oil pipe 210, the first valve body 12 is opened to flush the oil pipe 210.

[0124] In some embodiments, in the method of S41, after the plurality of second valve bodies 13 are opened, the method further includes:

[0125] S411: Detect the pressure of the fluid in the pipeline 11 to determine whether the oil pipe 210 has been dewaxed;

[0126] If the pressure of the fluid in the pipeline 11 is less than the opening pressure of the first valve body 12, it is determined that the wax removal of the oil pipe 210 is completed, and the first valve body 12 and the plurality of second valve bodies 13 are all closed;

[0127] If the pressure of the fluid in the pipeline 11 is greater than or equal to the first preset pressure, it is determined that the wax cleaning is not completed, and the first valve body 12 and at least one second valve body 13 remain open.

[0128] Specifically, during the wax cleaning process, if the wax deposited part of the oil pipe 210 is washed through, so that the fluid pressure in the pipeline 11 gradually decreases, then the plurality of second valve bodies 13 are automatically closed in sequence; if the fluid pressure in the pipeline 11 is greater than or equal to the opening pressure of the first valve body 12, and the fluid pressure in the pipeline 11 is less than the first preset pressure, then the first valve body 12 is opened, and the plurality of second valve bodies 13 are closed; if the wax cleaning of the oil pipe 210 is completed, the pressure of the fluid in the pipeline 11 is reduced to less than the opening pressure of the first valve body 12, and the first valve body 12 and the plurality of second valve bodies 13 are automatically closed. If the wax cleaning in the oil pipe 210 is not completed, the pressure of the fluid in the pipeline 11 will continue to be greater than the first preset pressure, and the first valve body 12 and at least one second valve body 13 will remain open.

[0129] In some embodiments, the method of S4 further includes:

[0130] S42: Determine whether the pressure of the fluid in the detection pipeline 11 reaches a second preset pressure;

[0131] If the pressure of the fluid in the pipeline 11 is less than the second preset pressure, it is determined that opening a number of second valve bodies 13 can complete the wax cleaning work, and the wax cleaning is ended;

[0132] If the pressure of the fluid in the pipeline 11 is greater than or equal to the second preset pressure, it is determined that the wax cleaning operation cannot be completed, and method S5 is executed.

[0133] Specifically, after several second valve bodies 13 are opened, wax cleaning in the oil pipe 210 is not completed, so that the pressure inside the oil pipe 210 continues to increase, and then the fluid pressure of the pipeline 11 continues to increase. That is, it is determined that opening several second valve bodies 13 to flush the oil pipe 210 cannot complete the wax cleaning work, and method S5 is executed.

[0134] In some embodiments, the method of S5 includes:

[0135] S51: The driving component 2 drives the pipeline 11 to move toward the opening direction of the oil pipe 210, and the first valve body 12 and the plurality of second valve bodies 13 follow the movement of the pipeline 11. The first valve body 12 and the plurality of second valve bodies 13 discharge fluid into the oil pipe 210 to flush the inner wall of the oil pipe 210.

[0136] Specifically, the driving member 23 drives the reel 22 to rotate, and the pipe 11 is wound onto the reel 22, so that the pipe 11 moves toward the wellbore, and the first valve body 12 and the plurality of second valve bodies 13 follow the pipe 11 to move in the oil pipe 210, and the wax blocks in the oil pipe 210 are scraped off through the pipe 11, and the fluid passing through the first valve body 12 and the plurality of second valve bodies 13 can flush the inner wall of the oil pipe 210 along the length direction of the oil pipe 210. It can be understood that the wax blocks are attached between the oil pipe 210 and the pipe 11, and by reeling in the pipe 11, the pipe 11 moves in the oil pipe 210, and the wax blocks will be broken under the action force between the oil pipe 210 and the pipe 11, and the fluid sprayed from the first valve body 12 and the second valve body 13 will disperse and melt the wax blocks, thereby accelerating the wax cleaning efficiency.

[0137] The second preset pressure is greater than the first preset pressure, and the opening pressures of the plurality of second valve bodies 13 are all less than the second preset pressure. When the plurality of second valve bodies 13 are all opened, if the wax cleaning is not completed and the fluid pressure of the fluid in the pipeline 11 continues to increase until the fluid pressure increases to a level greater than or equal to the second preset pressure, the controller 4 controls the driving member 23 of the driving assembly 2 to open, thereby driving the reel 22 to reel up the pipeline 11.

[0138] The driving component 2 can also drive the pipeline 11 to move in the direction away from the opening of the oil pipe 210 , that is, the driving component 2 drives the pipeline 11 to move in the oil pipe 210 .

[0139] In some embodiments, the method of S5 further includes:

[0140] S52: Detect the pressure of the fluid in the pipeline 11 to determine whether the oil pipe 210 has been dewaxed;

[0141] If the pressure of the fluid in the pipeline 11 is less than the opening pressure of the first valve body 12, it is determined that the wax removal of the oil pipe 210 is completed, and the driving component 2 stops driving the pipeline 11;

[0142] If the pressure of the fluid in the pipeline 11 is greater than or equal to the opening pressure of the first valve body 12, it is determined that the wax removal is not completed, and the driving component 2 drives the pipeline 11 to move repeatedly in the oil well.

[0143] Specifically, when the wax deposition in the oil pipe 210 is serious, the driving assembly 2 can drive the pipe 11 to move repeatedly in the oil pipe 210, that is, to reel in and unreel the pipe 11 repeatedly, so as to fully remove the wax deposition in the oil pipe 210. After the wax removal in the oil pipe 210 is completed, the pipe 11 is unreeled into the oil pipe 210.

[0144] It is understandable that in some other embodiments, when the driving assembly 2 drives the pipeline 11 to move in the oil pipe 210, the first valve body 12 and the plurality of second valve bodies 13 may be partially opened, for example, only the first valve body 12 is opened, or a portion of the second valve bodies 13 is opened, or all the second valve bodies 13 are opened, or the first valve body 12 and a portion of the second valve bodies 13 are opened, as long as the wax cleaning work of the oil pipe 210 can be completed, which is not limited here. That is, when the driving assembly 2 drives the pipeline 11 to move in the oil pipe 210, the first valve body 12 and / or the plurality of second valve bodies 13 are opened.

[0145] It can be understood that in some other embodiments, when the driving component 2 drives the pipeline 11 to move in the oil pipe 210, the first valve body 12 and several second valve bodies 13 can be all closed, and the wax blocks are broken up by moving the pipeline 11 in the oil pipe 210, and the wax blocks are melted through the pipeline 11.

[0146] The oil pipe wax cleaning device 100 and method of the embodiment of the present application can prevent wax deposition on the oil pipe 210 by inserting the pipe 11 inside the oil pipe 210; by inputting fluid into the oil pipe 210 and driving the pipe 11 to move inside the oil pipe 210, the inside of the oil pipe 210 is cleaned of wax, thereby ensuring the working stability of the oil production equipment and extending the service life of the oil production equipment.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Under the concept of the present application, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present application as above, which are not provided in detail for the sake of simplicity. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An oil pipe wax removal device, used for removing wax from the oil pipe of oil production equipment, characterized in that: include: A pipeline assembly, comprising a pipeline, a first valve body and a plurality of second valve bodies, wherein the first valve body is arranged at one end of the pipeline, and the plurality of second valve bodies are arranged in sequence and at intervals along the length direction of the pipeline, and the pipeline is used to be placed in an oil pipe; A driving assembly connected to an end of the pipeline away from the first valve body, the driving assembly being used to drive the pipeline to move in the oil pipe; A liquid injection assembly connected to an end of the pipeline away from the first valve body, the liquid injection assembly is used to input fluid into the pipeline; Wherein, the method for removing wax from an oil pipe based on the oil pipe wax removal device comprises: The pipeline is placed into the oil pipe, the first valve body and the plurality of second valve bodies are closed, and fluid is input into the pipeline; Check whether the oil pipe has been dewaxed; If not, the first valve body is opened, so that the fluid in the pipeline is discharged to the oil pipe through the first valve body; If the pressure of the fluid in the pipeline reaches a first preset pressure, the plurality of second valve bodies are opened, so that the fluid in the pipeline is discharged to the oil pipe through the plurality of second valve bodies; If the pressure of the fluid in the pipeline reaches a second preset pressure, driving the pipeline to move toward the opening direction of the oil pipe; Wherein, the first preset pressure is lower than the second preset pressure.

2. The oil pipe wax removal device according to claim 1, characterized in that: The opening pressure of the first valve body is respectively smaller than the opening pressures of the plurality of second valve bodies; and / or The opening pressures of the plurality of second valve bodies increase sequentially from an end close to the first valve body toward an end away from the first valve body.

3. The oil pipe wax removal device according to claim 1, characterized in that: The drive assembly comprises: Bracket; A reel, rotatably disposed on the bracket, and an end of the pipeline away from the first valve body is wound around the reel; A driving member is connected to the reel, and the driving member can drive the reel to rotate relative to the bracket to drive the pipeline to move in the oil pipe.

4. The oil pipe wax removal device according to claim 3, characterized in that: The reel comprises a water inlet and a water outlet which are connected to each other, and the water outlet is connected to the pipeline; The driving assembly also includes a joint, two ends of which are respectively connected to the water inlet and the liquid injection assembly, and the reel can rotate relative to the joint.

5. The oil pipe wax removal device according to claim 3, characterized in that: The driving assembly further comprises a first guide wheel, the first guide wheel is rotatably disposed on the bracket, the rotation axis of the first guide wheel is parallel to the rotation axis of the reel, the first guide wheel is disposed on one side of the reel in a radial direction, and the pipeline is wound around the reel after passing through the first guide wheel; and / or The drive assembly also includes a second guide wheel, the rotation axis of the second guide wheel is parallel to the rotation axis of the drum, the second guide wheel is arranged on one side of the drum along the radial direction, and the second guide wheel is used to guide the pipeline from above the oil pipe to the drum.

6. The oil pipe wax removal device according to claim 1, characterized in that: The liquid injection assembly includes a liquid storage cylinder, the liquid storage cylinder is communicated with the pipeline, and the liquid injection assembly also includes: a heater, the heater being in communication with the liquid storage cylinder; and / or A pressurizer is connected to the liquid storage cylinder.

7. The oil pipe wax removal device according to any one of claims 1 to 6, characterized in that: The number of the pipeline components and the number of the driving components are respectively several, each of the pipeline components is connected to a corresponding driving component, and several of the pipeline components are respectively connected to the injection components.

8. The oil pipe wax removal device according to claim 7, characterized in that: It also includes a plurality of third valve bodies, and one end of the pipeline of each pipeline assembly that is away from the first valve body is connected to a corresponding one of the third valve bodies.

9. The oil pipe wax removal device according to any one of claims 1 to 6, characterized in that: It also includes a controller, which is electrically connected to the first valve body, the plurality of second valve bodies, the drive assembly and the injection assembly respectively, and the controller can control the first valve body, the plurality of second valve bodies, the drive assembly and the injection assembly to open or close respectively.

10. A method for removing wax from an oil pipe, characterized in that: The oil pipe wax cleaning device according to any one of claims 1 to 9 is used for oil pipe wax cleaning.

11. The oil pipe wax removal method according to claim 10, characterized in that: The inputting of the fluid into the pipeline comprises: heating the fluid and then inputting it into the pipeline; and / or The first valve body is opened by: pressurizing the fluid in the pipeline to the opening pressure of the first valve body, and the first valve body is opened; and / or The opening of the plurality of second valve bodies includes: when the fluid in the pipeline is pressurized to an opening pressure of a corresponding one of the second valve bodies, the corresponding one of the second valve bodies is opened.

12. The oil pipe wax removal method according to any one of claims 10-11, characterized in that: The detection of whether the oil pipe is wax-cleared includes: The working current of the oil production equipment is detected. If the working current is greater than the preset current, it is determined that the wax cleaning of the oil pipe is not completed.

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