Skid-mounted heating device for thermal washing paraffin removal

Abstract

The utility model relates to the technical field of oil well cleaning equipment, in particular to a skid-mounted heating device for thermal washing paraffin removal. The skid-mounted heating device for thermal washing paraffin removal comprises a skid-mounted seat and a plurality of locking universal wheels fixedly mounted at the bottom end of the skid-mounted seat; the control box is mounted on the skid-mounted seat; the furnace body is fixedly mounted on the skid-mounted seat, a separation steel plate is mounted in the middle of the furnace body, an inner cavity of the furnace body is divided into a lower combustion chamber and an upper heat exchange chamber by the separation steel plate, a combustion component is mounted in the lower combustion chamber, the upper heat exchange chamber is filled with heat conduction oil, and a heat conduction pipe for circulation of a thermal washing paraffin removal medium is mounted in the upper heat exchange chamber; and the smoke pipe is installed at one end of the furnace body and communicates with the lower combustion chamber, a protection frame used for wrapping the bottom of the smoke pipe is installed on the skid-mounted base, and a liquid inlet pipe communicating with the heat conduction pipe is installed in the protection frame. The skid-mounted heating device for thermal washing paraffin removal has the advantages that waste heat is fully utilized, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well cleaning equipment, in particular to a skid-mounted heating device for hot washing and wax removal. Background Art

[0002] Waxing in oil wells is a long-standing problem in oilfield development. When crude oil is pumped from underground to the surface, the escape and expansion of dissolved gases cause the crude oil temperature to drop, causing wax to crystallize and precipitate from the crude oil in order of molecular weight. This is then deposited on the inner wall of the oil pipe, causing the wellbore to narrow and the oil well production to decrease. In severe cases, it can even clog the oil pipe and cause the well to stop production. The skid-mounted hot washing and wax removal heating device is a modular, mobile heating device used for cleaning wax deposits in oilfield wellbores and pipelines. It dissolves and removes paraffin deposits through the circulation of high-temperature hot fluid.

[0003] However, the existing skid-mounted hot washing and wax cleaning heating equipment has the problem that when fuel is burned, part of the heat will be discharged with the flue gas, which cannot fully utilize the thermal energy of the flue gas, resulting in excessive energy consumption for cleaning and heating.

[0004] Therefore, it is necessary to provide a new skid-mounted hot washing and wax removal heating device to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a skid-mounted heating device for hot washing and wax removal.

[0006] The utility model provides a skid-mounted hot washing and wax removing heating device comprising: a skid-mounted seat, and a plurality of locking universal wheels fixedly mounted on the bottom end of the skid-mounted seat;

[0007] A control box is mounted on the skid-mounted seat;

[0008] The furnace body is fixedly mounted on the skid-mounted base, and a partition steel plate is installed in the middle of the furnace body, the partition steel plate divides the inner cavity of the furnace body into a lower combustion chamber and an upper heat exchange chamber, the lower combustion chamber is installed with combustion components, the upper heat exchange chamber is filled with heat transfer oil, and the upper heat exchange chamber is installed with a heat pipe for the circulation of hot washing and wax removal medium, the liquid outlet end of the heat pipe is connected to a plunger pump, the plunger pump is installed on the skid-mounted base, and is electrically connected to the control box;

[0009] The smoke pipe is installed at one end of the furnace body and communicated with the lower combustion chamber. A protective frame for wrapping the bottom of the smoke pipe is installed on the skid-mounted seat, and a liquid inlet pipe communicated with the heat pipe is installed in the protective frame.

[0010] Preferably, the combustion component includes an end plate, which is fixedly mounted on one side of the furnace body, and a plurality of gas pipes are installed on one end of the end plate facing the lower combustion chamber, and a plurality of air holes are evenly opened on the gas pipes. An electronic igniter is installed on one side of the air holes on the plurality of gas pipes, and the electronic igniter is electrically connected to the control box. An intake manifold connected to the plurality of gas pipes is installed on the other side of the end plate, and a fuel control valve is installed on the intake manifold, and the fuel control valve is electrically connected to the control box.

[0011] Preferably, a temperature sensor is embedded in the end plate, and the temperature sensor is electrically connected to the control box.

[0012] Preferably, the heat conducting pipe and the liquid inlet pipe are both configured to be continuously bent in an S-shape.

[0013] Preferably, a partition is installed in the protective frame for wrapping both the smoke pipe and the liquid inlet pipe.

[0014] Preferably, a sealed cavity is formed between the protective frame and the partition, the sealed cavity is filled with water, and a liquid injection pipe is provided on the top partition in the protective frame.

[0015] Preferably, an electric heating rod communicating with the sealed cavity is installed on the partition, and the electric heating rod is electrically connected to the control box.

[0016] Compared with the related art, the skid-mounted hot washing and wax removal heating device provided by the utility model has the following beneficial effects:

[0017] 1. The utility model provides a skid-mounted hot washing and wax cleaning heating device. By arranging a protective frame on the smoke pipe, the liquid inlet pipe passes through the protective frame, thereby preheating the circulating cleaning medium by using the smoke from the smoke pipe, and making full use of the heat energy generated by the combustion of the fuel;

[0018] 2. A partition is set in the protective frame, and an electric heating rod is set on the partition. This further utilizes the electric heating rod to preheat the circulating cleaning medium. When used in combination with the combustion component, the circulating heating rate can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a preferred embodiment of the skid-mounted hot washing and wax removal heating device provided by the utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the skid-mounted hot washing and wax removal heating device provided by the present invention;

[0021] Figure 3 This is a partial cross-sectional view of the skid-mounted hot washing and wax removing heating device provided by the utility model.

[0022] Numbers in the figure: 1. Skid mount; 11. Locking universal wheel; 12. Protective frame; 13. Partition; 14. Liquid injection pipe; 15. Electric heating rod; 2. Furnace body; 201. Lower combustion chamber; 202. Upper heat exchange chamber; 3. Partition steel plate; 4. Combustion component; 41. End plate; 42. Gas pipe; 43. Electronic igniter; 44. Air intake manifold; 45. Fuel control valve; 46. Temperature sensor; 401. Air hole; 5. Heat pipe; 6. Plunger pump; 7. Smoke pipe; 8. Liquid inlet pipe; 9. Control box. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0025] See also Figures 1 to 3 The present invention provides a skid-mounted heating device for hot washing and wax removal, and the skid-mounted heating device for hot washing and wax removal includes:

[0026] A skid-mounted base 1, and a plurality of locking universal wheels 11 fixedly mounted on the bottom end of the skid-mounted base 1;

[0027] A control box 9 is mounted on the skid-mounted base 1;

[0028] The furnace body 2 is fixedly mounted on the skid-mounted base 1, and a partition steel plate 3 is installed in the middle of the furnace body 2. The partition steel plate 3 divides the inner cavity of the furnace body 2 into a lower combustion chamber 201 and an upper heat exchange chamber 202. The lower combustion chamber 201 is installed with a combustion component 4. The upper heat exchange chamber 202 is filled with heat transfer oil. A heat pipe 5 for circulating a hot washing and wax removal medium is installed in the upper heat exchange chamber 202. The liquid outlet of the heat pipe 5 is connected to a plunger pump 6. The plunger pump 6 is installed on the skid-mounted base 1 and is electrically connected to a control box 9.

[0029] The smoke pipe 7 is installed at one end of the furnace body 2 and is connected to the lower combustion chamber 201. The skid-mounted seat 1 is equipped with a protective frame 12 for wrapping the bottom of the smoke pipe 7, and the protective frame 12 is equipped with a liquid inlet pipe 8 connected to the heat pipe 5.

[0030] The combustion component 4 includes an end plate 41, which is fixedly mounted on one side of the furnace body 2, and a plurality of gas pipes 42 are mounted on one end of the end plate 41 facing the lower combustion chamber 201, wherein a plurality of gas holes 401 are evenly opened on the gas pipes 42, and electronic igniters 43 are mounted on one side of the gas holes 401 on the gas pipes 42, and the electronic igniters 43 are electrically connected to the control box 9. An air intake manifold 44 in communication with the gas pipes 42 is mounted on the other side of the end plate 41, and a fuel control valve 45 is mounted on the air intake manifold 44, and the fuel control valve 45 is electrically connected to the control box 9.

[0031] A temperature sensor 46 is embedded in the end plate 41 , and the temperature sensor 46 is electrically connected to the control box 9 .

[0032] It should be noted that: when in use, the skid-mounted seat 1 is flexibly arranged on the side of the wellbore that needs to be cleaned through the locking universal wheel 11, and then the liquid inlet pipe 8 is connected to the return oil end of the hot washing and wax cleaning medium, and the liquid outlet end of the plunger pump 6 is connected to the oil inlet end of the hot washing and wax cleaning medium, so as to heat the wax cleaning medium for circulating cleaning. During heating, the air intake manifold 44 is connected to the external fuel, and then the fuel (gas) flows to each air pipe 42 through the control of the fuel control valve 45 and is discharged from the air hole 401. The electronic igniter 43 is controlled to ignite, so that the fuel is ignited above the air hole 401, thereby heating the partition steel plate 3. The temperature of the heating process is controlled by the temperature control valve 45. The sensor 46 monitors and feeds the monitoring data back to the control box 9, which then uses the intelligent controller to adjust the opening of the fuel control valve 45 so that the heat-conducting oil in the upper heat exchange chamber 202 reaches the set heating temperature, thereby heat-conducting and heating the medium when it flows through the heat-conducting pipe 5. The combustion exhaust gas of the lower combustion chamber 201 is discharged from the smoke pipe 7, and is protected by the protective frame 12 during discharge, and the liquid inlet pipe 8 passes through the protective frame 12, so that the liquid inlet pipe 8 can conduct heat with the smoke pipe 7, thereby making full use of the waste heat of the flue gas to preheat the medium in the liquid inlet pipe 8, thereby making full use of the waste heat and making the entire heating device more energy-efficient.

[0033] In this embodiment, the heat conducting pipe 5 and the liquid inlet pipe 8 are both configured to be continuously bent in an S-shape, which extends the heat exchange length of the heat conducting pipe 5 and the liquid inlet pipe 8, increases the heat exchange area, and facilitates heat conduction heating of the medium flowing therethrough.

[0034] In the embodiments of the present invention, please refer to Figures 1 to 3 , a partition 13 is installed in the protective frame 12 for wrapping the smoke pipe 7 and the liquid inlet pipe 8;

[0035] A sealed cavity is formed between the protection frame 12 and the partition 13, and the sealed cavity is filled with water. A liquid injection pipe 14 is opened on the top partition 13 in the protection frame 12;

[0036] An electric heating rod 15 communicating with the sealed cavity is installed on the partition 13 , and the electric heating rod 15 is electrically connected to the control box 9 .

[0037] It should be noted that: in this way, the smoke pipe 7 is in the protective frame 12, and the protective frame 12 uses the partition 13 to form a sealed cavity. Water is injected into the sealed cavity through the liquid injection pipe 14, and the water is used as the conduction medium, so that sufficient heat conduction can be carried out between the smoke pipe 7 and the liquid inlet pipe 8, and the water is further heated by the electric heating rod 15, thereby increasing the preheating temperature of the liquid inlet pipe 8, reducing the energy demand for subsequent heating, and helping to increase the heating rate.

[0038] The working principle of the skid-mounted hot washing and wax removal heating device provided by the utility model is as follows:

[0039] During heating, the air intake manifold 44 is connected to the external fuel, and then the fuel (gas) flows to each air pipe 42 through the control of the fuel control valve 45 and is discharged from the air hole 401. The electronic igniter 43 is controlled to ignite, so that the fuel above the air hole 401 is ignited, thereby heating the partition steel plate 3. The temperature of the heating process is monitored by the temperature sensor 46, and the monitoring data is fed back to the control box 9. The control box 9 then uses the intelligent controller to adjust the opening of the fuel control valve 45 so that the heat transfer oil in the upper heat exchange chamber 202 reaches the set heating temperature, so that the medium is heat-conducted and heated when it flows through the heat transfer pipe 5. The combustion exhaust gas of the lower combustion chamber 201 is discharged from the smoke pipe 7 and is protected by the protective frame 12 during discharge. The liquid inlet pipe 8 passes through the protective frame 12, so that the liquid inlet pipe 8 can conduct heat with the smoke pipe 7, thereby fully utilizing the waste heat of the flue gas to preheat the medium in the liquid inlet pipe 8, thereby fully utilizing the waste heat, making the entire heating device more energy-efficient.

[0040] Furthermore, the smoke pipe 7 is in the protective frame 12, and the protective frame 12 uses a partition 13 to form a sealed cavity. Water is injected into the sealed cavity through the liquid injection pipe 14, and the water is used as a conductive medium, so that sufficient heat conduction can be carried out between the smoke pipe 7 and the liquid inlet pipe 8, and the water is further heated by the electric heating rod 15, thereby increasing the preheating temperature of the liquid inlet pipe 8, reducing the energy demand for subsequent heating, and helping to increase the heating rate.

[0041] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0042] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A skid-mounted heating device for hot washing and wax removal, comprising: A skid-mounted seat (1), and a plurality of locking universal wheels (11) fixedly mounted on the bottom end of the skid-mounted seat (1); A control box (9) is mounted on the skid-mounted seat (1); It is characterized by further comprising: A furnace body (2) is fixedly mounted on the skid-mounted seat (1), and a partition steel plate (3) is installed in the middle of the furnace body (2), and the partition steel plate (3) divides the inner cavity of the furnace body (2) into a lower combustion chamber (201) and an upper heat exchange chamber (202), wherein a combustion component (4) is installed in the lower combustion chamber (201), and the upper heat exchange chamber (202) is filled with heat transfer oil, and a heat conduction pipe (5) for circulating a hot washing and wax removal medium is installed in the upper heat exchange chamber (202), and the liquid outlet end of the heat conduction pipe (5) is connected to a plunger pump (6), which is installed on the skid-mounted seat (1) and electrically connected to a control box (9); A smoke pipe (7) is mounted on one end of the furnace body (2) and communicates with the lower combustion chamber (201); a protective frame (12) for wrapping the bottom of the smoke pipe (7) is mounted on the skid-mounted seat (1); and a liquid inlet pipe (8) communicating with the heat conducting pipe (5) is mounted in the protective frame (12).

2. The skid-mounted hot washing and wax removing heating device according to claim 1 is characterized in that: The combustion component (4) includes an end plate (41), the end plate (41) is fixedly mounted on one side of the furnace body (2), and a plurality of gas pipes (42) are mounted on one end of the end plate (41) facing the lower combustion chamber (201), a plurality of gas holes (401) are evenly opened on the gas pipes (42), and electronic igniters (43) are mounted on one side of the gas holes (401) on the gas pipes (42), and the electronic igniters (43) are electrically connected to the control box (9), and an air intake manifold (44) connected to the plurality of air pipes (42) is mounted on the other side of the end plate (41), and a fuel control valve (45) is mounted on the air intake manifold (44), and the fuel control valve (45) is electrically connected to the control box (9).

3. The skid-mounted hot washing and wax removing heating device according to claim 2, characterized in that: A temperature sensor (46) is embedded in the end plate (41), and the temperature sensor (46) is electrically connected to the control box (9).

4. The skid-mounted hot washing and wax removing heating device according to claim 1, characterized in that: The heat conducting pipe (5) and the liquid inlet pipe (8) are both configured to be continuously bent in an S-shape.

5. The skid-mounted hot washing and wax removing heating device according to claim 1 is characterized in that: A partition (13) is installed in the protective frame (12) for enclosing both the smoke pipe (7) and the liquid inlet pipe (8).

6. The skid-mounted hot washing and wax removing heating device according to claim 5, characterized in that: A sealed cavity is formed between the protective frame (12) and the partition (13), the sealed cavity is filled with water, and a liquid injection pipe (14) is provided on the top partition (13) in the protective frame (12).

7. The skid-mounted hot washing and wax removing heating device according to claim 6, characterized in that: An electric heating rod (15) communicating with the sealed cavity is mounted on the partition (13), and the electric heating rod (15) is electrically connected to the control box (9).

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