A production device for a wellhead

Abstract

The application relates to the technical field of heavy oil thermal recovery production of oil fields, and particularly discloses a mining device for a wellhead, which comprises a plurality of microwave processors arranged in parallel on a main oil path and a discharge pipe, and the liquid inlets and outlets of the microwave processors are respectively connected with the main oil path and the discharge pipe; wherein the microwave processor comprises a processing tank and a plurality of magnetrons, each magnetron is arranged in the processing tank; and a rotating driving mechanism is arranged in the processing tank, each magnetron is arranged on the rotating driving mechanism, and the rotating driving mechanism is used for driving the plurality of magnetrons to rotate around the rotating driving mechanism. The application improves the problem that the wellhead is easily blocked by high-condensation oil, and reduces the operation and maintenance cost of an oil and gas mining system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heavy oil thermal recovery production in oil fields, and specifically provides a mining device for a wellhead. BACKGROUND

[0002] In oil production operations, the oil production wellhead is a key node for crude oil production, and its transportation stability directly determines the oil production efficiency. The plugging problem of high pour point oil at the wellhead has long plagued the development of the industry and become a core technical bottleneck restricting the continuity of wellhead operations. The pour point of high pour point oil is generally higher than 30℃, and the pour point of high pour point oil in some special block oilfields even breaks through 40℃ (such as the pour point of high pour point oil in a certain oilfield block in Bohai reaching 42℃), which forms a sharp contradiction with the low temperature environment often encountered at the wellhead.

[0003] Under the low temperature working condition of the wellhead, the wax molecules in the high pour point oil will quickly precipitate, aggregate and interweave to form a three-dimensional network crystal structure, resulting in a sharp deterioration of the rheological properties of the crude oil. When the wellhead temperature is lower than the wax precipitation point of the crude oil, the apparent viscosity of the crude oil increases exponentially, for example, the apparent viscosity of the high pour point oil in a certain block is only 200 mPa·s at 35℃, and when the wellhead temperature drops to 25℃, the viscosity increases to 5000 mPa·s. At the same time, the pressure drop gradient of the wellhead pipeline increases sharply, exceeding 1.5 MPa / km, and in extreme cases, the high pour point oil will form a rigid colloid, directly causing complete plugging of the wellhead lumen, not only causing interruption of oil production operations, but also possibly causing safety hazards such as abnormal wellhead pressure.

[0004] The current flow protection measures for high pour point oil plugging at the oil production wellhead rely on two technical paths of chemical viscosity reducer injection and electric heat tracing heating, but both have significant defects in wellhead scene application. Among them, the chemical viscosity reducer is easy to react with impurities in the crude oil after being injected at the wellhead, causing pipe wall scaling, with a scaling rate of more than 2 mm / year, which will reduce the cross-sectional area of the wellhead lumen in the long run. At the same time, it is also prone to reverse emulsification, with a viscosity rebound rate exceeding 30%, which cannot achieve stable plugging prevention. The electric heat tracing technology is limited by the heat exchange efficiency in the narrow space of the wellhead, with a comprehensive thermal efficiency of less than 40%, and there is a significant temperature control lag, with a temperature fluctuation range of ±5~8℃, which makes it difficult to accurately match the anti-plugging temperature requirements of high pour point oil at the wellhead. The limitations of these two technologies directly lead to high costs of flow protection of high pour point oil at the wellhead, accounting for more than 60% of the total cost of oil production.

[0005] In recent years, microwave heating technology has been gradually applied to the field of high pour point oil treatment due to its characteristics of rapid heating and targeted heating. The core principle is to act on high molecular hydrocarbons in high pour point oil through microwave heating equipment to promote the vibration of chemical bonds of hydrocarbons and achieve selective cracking of long-chain alkanes to generate short-chain hydrocarbons, thereby significantly reducing the pour point and viscosity of crude oil and alleviating the plugging problem from the root. However, the existing microwave heating equipment has the problems of large size and complex structure due to the limitation of structural design, and mostly uses high-power magnetrons as core components, which not only has high single maintenance cost, but also is difficult to adapt to the narrow installation space of oil extraction wellhead, and cannot meet the actual application requirements of wellhead site.

[0006] Therefore, in view of the special narrow space of oil extraction wellhead, low-cost operation and maintenance, and high operation stability requirements, it is urgent to develop a small-sized, low-maintenance-cost, and low-failure-rate high pour point oil microwave treatment equipment to effectively solve the problem of high pour point oil plugging at wellhead and ensure the continuity and safety of oil extraction operation. SUMMARY

[0007] The embodiment of the present application provides an exploitation device for wellhead, which solves the problem of easy plugging of oil extraction wellhead by high pour point oil in the prior art and reduces the operation and maintenance cost of the oil and gas exploitation system.

[0008] The present application provides an exploitation device for wellhead, comprising: a plurality of microwave processors arranged in parallel on a main oil line, and an oil discharge pipe, the liquid inlet and liquid outlet of the plurality of microwave processors being respectively connected to the main oil line and the oil discharge pipe; wherein the microwave processor comprises: a processing tank and a plurality of magnetrons, each magnetron being arranged in the processing tank; and a rotating drive mechanism arranged in the processing tank, each magnetron being arrayed on the rotating drive mechanism, and the rotating drive mechanism being used to drive the plurality of magnetrons to rotate around the rotating drive mechanism.

[0009] In a possible implementation, the exploitation device further comprises: a gas-liquid separator and a gas storage tank; wherein the liquid inlet and liquid outlet of the gas-liquid separator are arranged in series on the main oil line, and the gas outlet of the gas-liquid separator is connected to the gas storage tank; and the gas-liquid separator is arranged at the end of the main oil line away from the microwave processor.

[0010] In a possible implementation, the mining device further comprises: a flow distribution assembly, the flow distribution assembly comprising a pressure sensor, a liquid level meter; wherein the pressure sensor is arranged on the main oil line; the liquid level meter is arranged in the processing tank, and the liquid level meter is arranged higher than the top end of the magnetron; a plurality of electric shut-off valves are arranged at the liquid inlet of each processing tank; a controller is connected to the pressure sensor, the liquid level meter, and the electric shut-off valves, the controller receives the pressure sensor signal, and controls the number of opened electric shut-off valves according to a preset pressure threshold; the controller receives the liquid level meter signal, and closes the electric shut-off valve of the processing tank when the liquid level in the processing tank is higher than a set upper limit, and starts the magnetron in the processing tank; when the liquid level is lower than a set lower limit, the electric shut-off valve of the processing tank is opened, and the magnetron in the processing tank is closed.

[0011] In a possible implementation, the processing tank comprises: a tank body and an oil feeding pipe, one end of the oil feeding pipe being connected to the main oil line, and the other end being connected to the tank body; a conical bottom being arranged at the bottom surface of the tank body, a wide end of the conical bottom being connected to the bottom end of the tank body; an oil discharge groove being arranged on the surface of the conical bottom and close to the center; one end of the oil discharge pipe being connected to the oil discharge groove; the bottom end of the rotary driving mechanism being rotationally sealed with the oil feeding pipe, and the top end being arranged in the tank body; a dirt discharge groove being arranged between the oil discharge groove and the rotary driving mechanism; and a dirt collection tank being sleeved on the circumferential outer wall of the rotary driving mechanism, the top surface of the dirt collection tank being connected to the dirt discharge groove.

[0012] In a possible implementation, the rotary driving mechanism comprises: an adapter pipe, the bottom end of the adapter pipe being rotationally connected to the oil feeding pipe, and the top end of the adapter pipe penetrating through the bottom surface of the tank body, the adapter pipe being rotationally sealed with the bottom surface of the tank body; a belt pulley being arranged on the circumferential outer wall of the adapter pipe, the belt pulley being arranged at the lower part of the tank body, and the belt pulley being used for belt connection to drive the output shaft of the motor; a plurality of mounting rod assemblies, one end of each of the mounting rod assemblies being connected to the circumferential outer wall of the top end of the adapter pipe, each of the mounting rod assemblies being arranged in an annular array, and each of the magnetrons being arranged at the end of the mounting rod assembly away from the adapter pipe.

[0013] In one possible implementation, the mounting rod assembly includes: an extension rod, one end of which is mounted on the top of the adapter pipe, with each extension rod arranged radially; a first rotating rod, the bottom end of which is rotatably mounted on the end of the extension rod away from the adapter pipe, and the top end of which is connected to the magnetron; a second rotating rod, the bottom end of which is disposed through the middle section of the extension rod, and the other end of which is used to mount a gear transmission assembly, one end of which drives and connects to the first rotating rod; a lifting rod, the top end of which is fixedly mounted on the top surface of the tank body; a fixed gear, fixedly mounted on the bottom end of the lifting rod, and the other end of the gear transmission assembly meshes with the fixed gear; a three-pronged rod, the center of which is fixedly mounted on the circumferential outer wall of the lifting rod above the fixed gear; and the top ends of each of the second rotating rods are rotatably mounted on the respective ends of the three-pronged rod.

[0014] In one possible implementation, the gear transmission assembly includes: a first gear mounted on the top of the second rotating rod, the first gear meshing with the fixed gear; and a second gear disposed on the circumferential outer wall of the first rotating rod near the magnetron, the second gear meshing with the side of the first gear away from the fixed gear.

[0015] In one possible implementation, a cleaning component is provided at the end of the second rotating rod away from the three-pronged rod. The cleaning component includes: a connecting rod with its top end connected to the second rotating rod; and a cleaning blade disposed at the bottom end of the connecting rod.

[0016] In one possible implementation, the connecting rod has a spiral blade on its circumferential outer wall, and the spiral blade is arranged to spiral along the circumferential outer wall of the connecting rod.

[0017] In one possible implementation, the mining apparatus further includes a preheating mechanism comprising: a coil wound around the circumferential outer wall of the main oil passage, the inlet end of the coil being connected to the top of the processing tank; and an oil-free screw vacuum pump, the input end of which is connected to the other end of the coil, and the output end of which is connected to the gas storage tank.

[0018] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0019] The main oil circuit delivers high-pour-point oil to each microwave processor. The microwave processor consists of multiple magnetrons and a processing tank. When high-pour-point oil is filled into the processing tank, the rotation drive mechanism is activated, causing multiple magnetrons to rotate around the rotation drive mechanism. During the slow rotation of the magnetrons, the high-pour-point oil in the processing tank is stirred. At the same time, the magnetrons generate microwave energy that acts on the polar water molecules and wax crystal network in the high-pour-point oil. The polar water molecules vibrate at high speed and generate heat under the action of the microwave alternating electric field. The mineralization ions in the high-pour-point oil are excited by the heat, and the charges they carry cause dynamic changes in the local micro electric field, forming a composite field environment with the microwave electromagnetic field. This composite field environment acts on the wax crystal network of the high-pour-point oil, and destroys the wax crystal network through the synergistic effect of electromagnetic shear force and thermal effect, accelerating the dispersion and melting of wax crystals, lowering the pour point of the high-pour-point oil, and improving the problem of pipeline equipment blockage that is easy to occur when collecting high-pour-point oil.

[0020] The microwave processor uses multiple low-power magnetrons instead of high-power magnetrons. Low-power magnetrons are relatively small in size, simple in structure, and inexpensive. They are also cheaper and more convenient to maintain and replace than high-power magnetrons. This improves the problem of high operating costs caused by the need for system shutdown for maintenance after the failure of traditional high-power magnetrons.

[0021] The rotating drive mechanism drives the magnetron to stir the high-pour-point oil in the processing tank. The stirring efficiency is high. Compared with the traditional stirring device, it avoids the phenomenon of high-pour-point oil gelatinizing on the surface of the magnetron due to insufficient stirring and excessive temperature near the magnetron. This reduces manufacturing costs and makes the high-pour-point oil more thoroughly stirred and heated more evenly when heated. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the mining device provided by the present invention.

[0024] Figure 2 This is a schematic diagram of the microwave processor structure provided by the present invention.

[0025] Figure 3 This is a schematic diagram of the processing tank structure provided by the present invention.

[0026] Figure 4 yes Figure 3 An enlarged schematic diagram of region A in the middle.

[0027] Figure 5This is a schematic diagram of the rotation drive mechanism provided by the present invention.

[0028] Figure 6 This is a schematic diagram of the mounting rod assembly structure provided by the present invention.

[0029] Figure 7 This is a schematic diagram of the cleaning component structure provided by the present invention.

[0030] Figure 8 This is a schematic diagram of the preheating mechanism provided by the present invention.

[0031] icon:

[0032] 100-Microwave Processor;

[0033] 110 - Processing tank; 111 - Tank body; 112 - Oil inlet pipe; 113 - Conical bottom; 114 - Oil drain trough; 115 - Sewage drain trough; 116 - Sludge collection tank;

[0034] 120-magnetron;

[0035] 130 - Rotary drive mechanism; 131 - Adapter pipe; 132 - Pulley;

[0036] 140 - Mounting rod assembly; 141 - Extension rod; 142 - First rotating rod; 143 - Second rotating rod; 144 - Lifting rod; 145 - Fixed gear; 146 - Trident; 147 - Gear transmission assembly; 1471 - First gear; 1472 - Second gear;

[0037] 150 - Cleaning component; 151 - Connecting rod; 152 - Cleaning blade; 153 - Spiral blade;

[0038] 200-oil drain pipe;

[0039] 300-Gas-Liquid Separator;

[0040] 400 - Gas storage tank;

[0041] 500 - Main oil circuit;

[0042] 600 - Flow distribution assembly; 610 - Pressure sensor; 620 - Level gauge; 630 - Electric shut-off valve;

[0043] 700 - Preheating mechanism; 710 - Coil; 720 - Oil-free screw vacuum pump. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0046] Example 1

[0047] Please see Figures 1-8 A wellhead extraction device includes: multiple microwave processors 100 arranged in parallel on a main oil passage 500, and an oil drain pipe 200. The inlet and outlet of the multiple microwave processors 100 are respectively connected to the main oil passage 500 and the oil drain pipe 200. The microwave processors 100 include: a processing tank 110 and multiple magnetrons 120, each magnetron 120 being disposed within the processing tank 110; and a rotation drive mechanism 130, disposed within the processing tank 110, with each magnetron 120 arrayed on the rotation drive mechanism 130. The rotation drive mechanism 130 is used to drive the multiple magnetrons 120 to rotate around the rotation drive mechanism 130.

[0048] In the above embodiment, the main oil circuit 500 delivers high-pour-point oil to each microwave processor 100. The microwave processor 100 consists of multiple magnetrons 120 and a processing tank 110. When high-pour-point oil is filled into the processing tank 110, the rotation drive mechanism 130 is activated, driving multiple magnetrons 120 to rotate around the rotation drive mechanism 130. During the slow rotation of the magnetrons 120, the high-pour-point oil in the processing tank 110 is stirred. At the same time, the magnetrons 120 generate microwave energy that acts on the polar water molecules and wax crystal network in the high-pour-point oil. The polar water molecules vibrate at high speed and generate heat under the action of the microwave alternating electric field. The mineralization ions in the high-pour-point oil are excited by the heat movement, and the charges they carry cause local micro-electric field dynamic changes, forming a composite field environment with the microwave electromagnetic field. This composite field environment acts on the wax crystal network of the high-pour-point oil, and destroys the wax crystal network through the synergistic effect of electromagnetic shear force and thermal effect, accelerating the dispersion and melting of wax crystals, reducing the pour point of the high-pour-point oil, and improving the problem of pipeline equipment blockage that is easy to occur when collecting high-pour-point oil.

[0049] The microwave processor 100 uses multiple low-power magnetrons 120 instead of high-power magnetrons 120. The low-power magnetrons 120 are relatively small in size, simple in structure, and inexpensive. They are also cheaper and more convenient to maintain and replace than high-power magnetrons 120. This improves the problem of high operating costs caused by the need for the entire system to be shut down for maintenance after the failure of the traditional high-power magnetron 120.

[0050] The rotary drive mechanism 130 drives the magnetron 120 to stir the high-pour-point oil in the processing tank 110. The stirring efficiency is high. Compared with the traditional stirring device, it avoids the phenomenon of high-pour-point oil gelatinizing on the surface of the magnetron 120 due to insufficient stirring, which causes the temperature near the magnetron 120 to be too high. This reduces manufacturing costs and makes the high-pour-point oil more thoroughly stirred and heated more evenly when heated.

[0051] Example 2

[0052] Please see Figures 1-8 The conveying device also includes a gas-liquid separator 300 and a gas storage tank 400; wherein, the inlet and outlet of the gas-liquid separator 300 are respectively connected in series on the main oil circuit 500, and the outlet pipe of the gas-liquid separator 300 is connected to the gas storage tank 400; the gas-liquid separator 300 is located at the end of the main oil circuit 500 away from the microwave processor 100.

[0053] In the above embodiment, before the high-pour-point oil enters each microwave processor 100, the high-pour-point oil in the main oil circuit 500 is separated into gas by a gas-liquid separator 300. The gas-liquid separator 300 is a gas-liquid cyclone separator with a degassing efficiency of ≥99%, a tangential flow velocity of 15m / s, and suppresses slug flow (flow fluctuation rate <3%). The separated gas is discharged into the gas storage tank 400 for storage through the top exhaust valve.

[0054] The gas-liquid separator 300 is used to efficiently remove free gas, prevent oil and gas from mixing and entering the microwave processor 100, ensure that microwave energy acts continuously, stably and evenly on the oil, avoid oil and gas alternating impact on the magnetron 120 causing flow and pressure fluctuations, eliminate microwave reflection loss caused by gas interference, and ensure heating stability and long-term operation of the equipment.

[0055] Example 3

[0056] Please see Figures 1-8 The mining apparatus also includes: a flow distribution assembly 600, which includes a pressure sensor 610 and a level gauge 620; wherein the pressure sensor 610 is located on the main oil circuit 500; the level gauge 620 is located inside the processing tank 110, and the level gauge 620 is positioned above the top of the magnetron 120; multiple electric shut-off valves 630 are provided, and the multiple electric shut-off valves 630 are respectively located at the inlet of each processing tank 110; and a controller, which connects the pressure sensor 610, the level gauge 620, and the electric shut-off valve 630. The controller receives a signal from the pressure sensor 610 and controls the number of electric shut-off valves 630 to be opened according to a preset pressure threshold. The controller also receives a signal from the level gauge 620. When the liquid level in the processing tank 110 is higher than the set upper limit, the electric shut-off valve 630 of the processing tank 110 is closed and the magnetron 120 in the processing tank 110 is activated. When the liquid level is lower than the set lower limit, the electric shut-off valve 630 of the processing tank 110 is opened and the magnetron 120 in the processing tank 110 is closed.

[0057] In the above embodiments, the controller realizes the dynamic distribution of high-pour-point oil. When the system starts, the pressure sensor 610 monitors the pressure in the main oil circuit 500 in real time and transmits the analog signal to the controller. The controller dynamically adjusts the number of electric shut-off valves 630 that are opened according to the preset pressure threshold. If the pressure is too low, the number of electric shut-off valves 630 that are opened is reduced, some microwave processors 100 are shut down, and the liquid supply flow of some microwave processors 100 is increased to ensure that some microwave processors 100 can work normally. If the pressure in the main pipeline is too high, more electric shut-off valves 630 are opened, and high-pour-point oil is processed by multiple microwave processors 100 to achieve the effect of depressurizing the main pipeline.

[0058] Meanwhile, the level gauge 620 monitors the liquid level in the processing tank 110 in real time. When the liquid level is higher than the upper threshold, the controller immediately closes the electric shut-off valve 630 of the processing tank 110, stopping the liquid intake of the processing tank 110. The controller then opens the magnetron 120 in the processing tank 110 to "de-pour" the high-pour-point oil in the processing tank 110. When the liquid level is lower than the lower threshold, the controller closes the magnetron 120 in the processing tank 110 and opens the electric shut-off valve 630 of the processing tank 110, allowing more high-pour-point oil to enter the processing tank 110 until the liquid level is higher than the upper threshold. The level gauge 620 and the electric shut-off valve 630 dynamically adjust whether the processing tank 110 is receiving liquid, preventing the magnetron 120 from starting dry burning when the high-pour-point oil level is below the magnetron 120.

[0059] Example 4

[0060] Please see Figures 1-8 The processing tank 110 includes: a tank body 111 and an oil inlet pipe 112, one end of which is connected to the main oil passage 500 and the other end of which is connected to the tank body 111; a conical bottom 113, which is located on the bottom surface of the tank body 111 and has its wide end connected to the bottom end of the tank body 111; an oil drain trough 114, which is located on the surface of the conical bottom 113 and close to the center; an oil drain pipe 200, one end of which is connected to the oil drain trough 114; a rotary drive mechanism 130, whose bottom end is rotaryly sealed with the oil inlet pipe 112 and whose top end is located inside the tank body 111; a sludge drain trough 115, which is located between the oil drain trough 114 and the rotary drive mechanism 130; and a dirt collection tank 116, which is sleeved on the circumferential outer wall of the rotary drive mechanism 130 and has its top surface connected to the sludge drain trough 115.

[0061] In the above embodiment, when the microwave processor 100 is working, the high-pour-point oil enters the upper oil pipe 112 through the main oil passage 500, and finally enters the rotary drive mechanism 130 through the upper oil pipe 112. The rotary drive mechanism 130 is rotatably mounted on the outer wall of the top end of the upper oil pipe 112 and rotates to seal with the outer wall of the upper oil pipe 112. After passing through the rotary drive mechanism 130, the high-pour-point oil enters the tank 111, where it is processed by the magnetron 120 installed in the tank 111. After the high-pour-point oil is processed, it is discharged into the drain pipe 200 through the drain groove 114 located near the inner ring of the conical bottom 113 on the bottom surface of the tank 111. The conical bottom 113 is inverted, with the center depositing downwards. This allows the treated high-pour-point oil above the conical bottom 113 to deposit towards the center and be collected through the oil drain trough 114. Finally, the treated high-pour-point oil is discharged through the oil drain pipe 200. The sludge drain trough 115 is used to collect crystals generated during the microwave treatment of the high-pour-point oil. These crystals are then stored in the dirt collection tank 116. A filter screen is provided on the side of the oil drain trough 114 near the tank body 111. The filter screen is used to block large particulate impurities as well as crystallized and gelatinized dirt, preventing impurities from entering the oil drain pipe 200 through the oil drain trough 114.

[0062] Example 5

[0063] Please see Figures 1-8 The rotary drive mechanism 130 includes a transfer pipe 131, with its bottom end rotatably connected to an oil pipe 112 and its top end passing through the bottom surface of the tank body 111. The transfer pipe 131 is rotatably sealed to the bottom surface of the tank body 111. A pulley 132 is located on the circumferential outer wall of the transfer pipe 131 and is located at the lower part of the tank body 111. The pulley 132 is used to connect the output shaft of the drive motor via a belt. Multiple mounting rod assemblies 140 are provided. One end of each mounting rod assembly 140 is connected to the circumferential outer wall of the top end of the transfer pipe 131. The mounting rod assemblies 140 are arranged in a ring array. Each magnetron 120 is installed at the end of the mounting rod assembly 140 away from the transfer pipe 131.

[0064] In the above embodiment, when it is necessary to drive the magnetron 120 to rotate around the axis of the transfer tube 131 inside the tank 111, the drive motor is started. The output shaft of the drive motor rotates and drives the pulley 132 to rotate via the belt, thereby driving the transfer tube 131 to rotate on the bottom surface of the tank 111. The transfer tube 131 rotates and seals with the bottom surface of the tank 111 and the upper oil pipe 112 respectively. When the transfer tube 131 rotates, it drives the multiple mounting rod assemblies 140 arrayed at its top to rotate around its axis. The mounting rod assemblies 140 correspond one-to-one with the magnetron 120. Then, the rotation of the transfer tube 131 drives each magnetron 120 to rotate around the axis of the transfer tube 131. The rotation of each magnetron 120 achieves the purpose of stirring the high-pour-point oil inside the tank 111.

[0065] Example 6

[0066] Please see Figures 1-8 The mounting rod assembly 140 includes: an extension rod 141, one end of which is mounted on the top of the adapter pipe 131, with each extension rod 141 arranged radially; a first rotating rod 142, the bottom end of which is rotatably mounted on the end of the extension rod 141 away from the adapter pipe 131, and the top end of which is connected to the magnetron 120; a second rotating rod 143, the bottom end of which is set through the middle section of the extension rod 141, and the other end of which is used to mount a gear transmission assembly 147, one end of which drives and connects to the first rotating rod 142; a lifting rod 144, the top end of which is fixedly mounted on the inner top surface of the tank body 111; a fixed gear 145, which is fixedly mounted on the bottom end of the lifting rod 144, and the other end of the gear transmission assembly 147 meshes with the fixed gear 145; a three-pronged rod 146, the center of which is fixedly mounted on the outer circumferential wall of the lifting rod 144 above the fixed gear 145; and the top ends of each second rotating rod 143 are rotatably mounted on each end of the three-pronged rod 146.

[0067] In the above embodiment, when the adapter pipe 131 is driven to rotate, it drives each extension rod 141 to rotate around the axis of the adapter pipe 131, which in turn drives the magnetron 120 on each extension rod 141 to rotate. When the extension rod 141 drives the first rotating rod 142 to rotate, since the fixed gear 145 is fixed with the lifting rod 144, the gear transmission assembly 147 drives the first rotating rod 142 to rotate, which in turn drives the magnetron 120 to rotate. This achieves the magnetron 120 rotating around the adapter pipe 131 while also rotating on its own axis, further avoiding the phenomenon of excessively high pour point temperature of the oil near the magnetron 120 causing paste formation on the surface of the magnetron 120.

[0068] Example 7

[0069] Please see Figures 1-8 The gear transmission assembly 147 includes: a first gear 1471, which is mounted on the top of the second rotating rod 143 and meshes with a fixed gear 145; and a second gear 1472, which is located on the outer circumferential wall of the first rotating rod 142 near the magnetron 120 and meshes with the side of the first gear 1471 away from the fixed gear 145.

[0070] In the above embodiment, when the adapter tube 131 rotates, causing the extension rod 141 and the first rotating rod 142 to rotate around the axis of the adapter tube 131, the first gear 1471 rotates along with the extension rod 141 around the axis of the adapter tube 131. During the rotation of the first gear 1471, since the fixed gear 145 is fixed, the first gear 1471 will rotate on its own axis. Then, the first gear 1471 drives the second gear 1472 meshing with it to rotate, so that the second gear 1472 drives the first rotating rod 142 to rotate, thereby achieving the effect of rotation during the rotation of the magnetron 120.

[0071] Example 8

[0072] Please see Figures 1-8 The second rotating rod 143 is provided with a cleaning component 150 at the end away from the three-pronged rod 146. The cleaning component 150 includes: a connecting rod 151, the top end of which is connected to the second rotating rod 143; and a cleaning blade 152, which is located at the bottom end of the connecting rod 151.

[0073] In the above embodiment, when the cleaning component 150 is working, the first gear 1471 rotates, driving the second rotating rod 143 to rotate. When the second rotating rod 143 rotates on the extension rod 141, it drives the connecting rod 151 to rotate, so that the connecting rod 151 drives the cleaning blade 152 at its bottom end to rotate around the axis of the connecting rod 151. The continuously rotating cleaning blade 152 scrapes away the dirt accumulated on the bottom panel of the tank 111, and finally discharges it through the drain trough 115.

[0074] It is worth noting that during the rotation of the second rotating rod 143, the continuously rotating cleaning blade 152 stirs the high-pour-point oil located at the bottom of the tank 111, avoiding uneven heating of the high-pour-point oil at the bottom due to lack of stirring. At the same time, after the treated high-pour-point oil is discharged through the drain trough 114, the drain pipe 200 is closed and the bottom of the tank 111 is cleaned by the cleaning blade 152. The cleaning blade 152 continuously rotates and pushes the scraped dirt into the drain trough 115. Then the dirt tank is closed, and the transfer pipe 131 replenishes the high-pour-point oil in the oil supply pipe 112 into the tank 111 for the next batch of high-pour-point oil to "de-pour".

[0075] Example 9

[0076] Please see Figures 1-8 The connecting rod 151 is provided with a spiral blade 153 on its outer circumference, and the spiral blade 153 is arranged to spiral around the outer circumference of the connecting rod 151.

[0077] In the above embodiment, when the connecting rod 151 rotates, it drives the spiral blade 153 on its circumferential outer wall to rotate. Then, the spiral blade 153 stirs the high-pour-point oil at the bottom of the tank 111 and moves it continuously upward to the top of the tank 111, thereby improving the overall mixing efficiency of the high-pour-point oil in the tank 111 and avoiding the existence of heating dead zones.

[0078] Example 10

[0079] Please see Figures 1-8 The mining apparatus also includes a preheating mechanism 700, which includes: a coil 710, which is wrapped around the outer wall of the main oil passage 500, with the air inlet end of the coil 710 connected to the top of the processing tank 110; and an oil-free screw vacuum pump 720, with the input end connected to the other end of the coil 710 and the output end connected to the gas storage tank 400.

[0080] In the above embodiment, the preheating mechanism 700 is used to supply the gas generated by the high-pour-point oil heated by the magnetron 120 in the tank 111 to the main oil circuit 500, thereby preheating the main oil circuit 500 with high-temperature gas, thus shortening the heating time of the magnetron 120 and saving electricity. After the oil-free screw vacuum pump 720 is started, it acts on the upper part of the tank 111 through the coil 710 and pipeline, so that a negative pressure is generated in the upper part of the tank 111. The negative pressure environment is conducive to the further precipitation of gas from the high-pour-point oil in the tank 111. Then, the high-temperature gas extracted is heated by the coil 710 to heat the high-pour-point oil in the main oil circuit 500, so that the temperature of the high-pour-point oil in the main oil circuit 500 rises, improving the processing efficiency of the microwave processor 100. Finally, the gas temperature in the main oil circuit 500 gradually decreases and is finally discharged into the gas storage tank 400 for storage.

[0081] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0082] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A wellhead extraction device, characterized in that, include: Multiple microwave processors (100) are connected in parallel on the main oil circuit (500), and an oil drain pipe (200) is provided. The inlet and outlet of each microwave processor (100) are respectively connected to the main oil circuit (500) and the oil drain pipe (200). The microwave processor (100) includes: A processing tank (110) and a plurality of magnetrons (120), each of the magnetrons (120) being disposed within the processing tank (110); and, A rotation drive mechanism (130) is provided inside the processing tank (110), and each of the magnetrons (120) is arrayed on the rotation drive mechanism (130). The rotation drive mechanism (130) is used to drive the multiple magnetrons (120) to rotate around the rotation drive mechanism (130). The processing tank (110) includes: a tank body (111) and an oil inlet pipe (112), one end of the oil inlet pipe (112) is connected to the main oil circuit (500), and the other end is connected to the tank body (111). The rotation drive mechanism (130) includes a transfer pipe (131), the bottom end of which is rotatably connected to the upper oil pipe (112), and the top end is provided through the bottom surface of the tank body (111). The transfer pipe (131) is rotatably sealed to the bottom surface of the tank body (111). A pulley (132) is provided on the outer circumferential wall of the transfer pipe (131), and the pulley (132) is provided at the lower part of the tank body (111). The pulley (132) is used to connect the output shaft of the drive motor with a belt. The mounting rod assembly (140) is provided in multiple ways. One end of each mounting rod assembly (140) is connected to the outer circumferential wall of the top end of the adapter pipe (131). Each mounting rod assembly (140) is arranged in a ring array. Each magnetron (120) is installed at the end of the mounting rod assembly (140) away from the adapter pipe (131).

2. The wellhead extraction device according to claim 1, characterized in that, It also includes: a gas-liquid separator (300) and a gas storage tank (400); among which, The inlet and outlet of the gas-liquid separator (300) are connected in series on the main oil circuit (500), and the outlet pipe of the gas-liquid separator (300) is connected to the gas storage tank (400). The gas-liquid separator (300) is located at the end of the main oil passage (500) away from the microwave processor (100).

3. The wellhead extraction device according to claim 1, characterized in that, Also includes: A flow distribution assembly (600) includes a pressure sensor (610) and a level gauge (620); wherein, The pressure sensor (610) is located on the main oil circuit (500); The level gauge (620) is located inside the processing tank (110), and the level gauge (620) is positioned above the top of the magnetron (120); Multiple electric shut-off valves (630) are provided, and the multiple electric shut-off valves (630) are respectively located at the liquid inlet of each of the processing tanks (110); The controller is connected to the pressure sensor (610), the level gauge (620), and the electric shut-off valve (630). The controller receives the signal from the pressure sensor (610) and controls the number of electric shut-off valves (630) to be opened according to a preset pressure threshold. The controller receives the signal from the level gauge (620). When the liquid level in the processing tank (110) is higher than the set upper limit, it closes the electric shut-off valve (630) of the processing tank (110) and starts the magnetron (120) in the processing tank (110). When the liquid level is lower than the set lower limit, it opens the electric shut-off valve (630) of the processing tank (110) and closes the magnetron (120) in the processing tank (110).

4. The wellhead extraction device according to claim 1, characterized in that, The processing tank (110) also includes: A conical bottom (113) is provided on the bottom surface of the tank body (111), and the wide end of the conical bottom (113) is connected to the bottom end of the tank body (111); An oil drain groove (114) is provided on the surface of the conical bottom (113) and near the center. One end of the oil drain pipe (200) is connected to the oil drain trough (114); The bottom end of the rotary drive mechanism (130) is rotaryly sealed with the upper oil pipe (112), and the top end is located inside the tank body (111); A drain trough (115) is provided between the oil drain trough (114) and the rotary drive mechanism (130); A dirt collection tank (116) is fitted on the outer circumferential wall of the rotating drive mechanism (130), and the top surface of the dirt collection tank (116) is connected to the drain trough (115).

5. The wellhead extraction apparatus according to claim 1, characterized in that, The mounting rod assembly (140) includes: an extension rod (141), one end of which is mounted on the top of the adapter tube (131), and each of the extension rods (141) is arranged in a radiating manner; The first rotating rod (142) is rotatably mounted at the bottom end of the extension rod (141) away from the adapter tube (131), and the top end is connected to the magnetron (120). The second rotating rod (143) has its bottom end passing through the middle section of the extension rod (141), and its other end is used to install a gear transmission assembly (147). One end of the gear transmission assembly (147) is driven to connect to the first rotating rod (142). The lifting rod (144) is fixedly installed at its top end on the inner top surface of the tank body (111); A fixed gear (145) is fixedly installed at the bottom end of the hoisting rod (144), and the other end of the gear transmission assembly (147) meshes with the fixed gear (145). The three-pronged lever (146) is fixedly installed at the center on the outer circumferential wall of the hoisting rod (144) on the upper part of the fixed gear (145); The top end of each of the second rotating rods (143) is rotatably mounted on each end of the trident (146).

6. The wellhead extraction apparatus according to claim 5, characterized in that, The gear transmission assembly (147) includes: a first gear (1471) mounted on the top of the second rotating rod (143), the first gear (1471) meshing with the fixed gear (145); The second gear (1472) is located on the outer circumferential wall of the first rotating rod (142) near the magnetron (120), and the second gear (1472) meshes with the first gear (1471) on the side away from the fixed gear (145).

7. The wellhead extraction apparatus according to claim 5, characterized in that, The second rotating rod (143) has a cleaning assembly (150) at the end away from the three-pronged rod (146), the cleaning assembly (150) comprising: Connecting rod (151), the top end of which is connected to the second rotating rod (143); A cleaning blade (152) is located at the bottom end of the connecting rod (151).

8. The wellhead extraction apparatus according to claim 7, characterized in that, The connecting rod (151) has a spiral blade (153) on its outer circumferential wall, and the spiral blade (153) is arranged to spiral along the outer circumferential wall of the connecting rod (151).

9. The wellhead extraction apparatus according to claim 2, characterized in that, It also includes a preheating mechanism (700), which includes: A coil (710) is wound around the outer wall of the main oil passage (500), and the air inlet end of the coil (710) is connected to the top of the processing tank (110); An oil-free screw vacuum pump (720) has its input end connected to the other end of the coil (710) and its output end connected to the gas storage tank (400).

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