Explosion-proof electromagnetic heater pry for gathering and transportation pipeline of oil field

Abstract

The utility model discloses an explosion-proof electromagnetic heater pry for an oil field gathering and transportation pipeline, which relates to the technical field of oil well pipelines and comprises an explosion-proof pipe body, the explosion-proof pipe body comprises a heat conduction inner pipe, an electromagnetic coil, a heat insulation layer, an impermeable layer and an explosion-proof outer pipe, and the electromagnetic coil is sleeved outside the heat conduction inner pipe. According to the anti-explosion electromagnetic heater pry for the gathering and transportation pipeline of the oil field, the electromagnetic coil is spirally wound on the heat conduction inner pipe in the extending direction in the circumferential direction, after alternating current is introduced into the electromagnetic coil, carriers of the heat conduction inner pipe move irregularly at a high speed, and the carriers collide and rub with atoms to generate heat energy; compared with a traditional heating mode, the electromagnetic heating pry has the advantages that due to the fact that a metal body is adopted for directly and actively heating, the power density is large, the heating speed is higher, heat transfer loss is avoided, more energy is saved in use, open fire and heating media do not exist, operation is safer, and the environment is cleaner.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well pipelines, in particular to an explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipelines. Background Technique

[0002] The sum of oil and gas reservoirs within the same oil and gas production area controlled by a single geological structure (or formation) factor. An oil and gas field may have one or more oil and gas reservoirs. An oilfield mainly refers to an oil reservoir in the same area, and a gas field mainly refers to a gas reservoir. Currently, it is difficult to exploit high, condensate, and viscous oils in oilfields because the content of gum, asphaltene, wax, etc. in these crude oils is high. Therefore, during the oil production process, since the temperature gradually decreases from the bottom of the well to the wellhead, this leads to the phenomenon of solidification, wax deposition, and blockage during the lifting of crude oil in the oil pipe, affecting the operation of the oil well. For this reason, it is necessary to heat the oilfield gathering and transportation pipelines to prevent the phenomenon of solidification, wax deposition, and blockage of crude oil.

[0003] When heating, if traditional heating methods are used, there are defects such as difficult elimination of open flames, difficult temperature control, and large heat losses, and it is extremely easy to occur explosion accidents, with relatively large potential safety hazards. In addition, when applying oil well pipelines, the docking problem needs to be considered to avoid leakage during oil transportation due to too large docking gaps, resulting in waste of resources. At the same time, oil is a flammable item and is very likely to catch fire when exposed to flames. Therefore, it is necessary to prevent leakage and improve the sealing performance of the oil well pipeline docking.

[0004] Therefore, in view of this, in response to the deficiencies of the existing structure, research and improvement are carried out, and an explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipelines is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide an explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipelines to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipelines, including an explosion-proof pipe body, characterized in that the explosion-proof pipe body includes a heat-conducting inner pipe, an electromagnetic coil, a heat-insulating layer, an anti-seepage layer, and an explosion-proof outer pipe. The electromagnetic coil is sleeved outside the heat-conducting inner pipe, and a heat-insulating layer made of asbestos material is sleeved outside the electromagnetic coil. The heat-conducting inner pipe is made of ferromagnetic cast iron conductor material, and an electromagnetic coil is spirally wound circumferentially along the extending direction of the heat-conducting inner pipe. After the electromagnetic coil is energized with an alternating current, the heat-conducting inner pipe is uniformly heated. The anti-seepage layer made of high-density polyethylene material is sleeved outside the heat-insulating layer, and the explosion-proof outer pipe made of stainless steel flexible material is sleeved outside the anti-seepage layer.

[0007] Further, a buried pipe penetrating the heat insulation layer, the anti-seepage layer and the explosion-proof outer pipe is embedded on one side of the explosion-proof pipe body, and a threading pipe is externally connected to the buried pipe.

[0008] Further, the explosion-proof pipe body is fixed on the skid-mounted frame, and connecting flanges are integrally fixed at both ends of the explosion-proof pipe body.

[0009] Further, a sunken inner groove is formed outside the middle hole of the connecting flange, and a sealing gasket is embedded inside the inner groove.

[0010] Further, a mating flange is externally connected to the connecting flange, and an outer convex ring matching the inner groove is fixed outside the middle hole of the mating flange.

[0011] Further, fastening bolts are circumferentially and arrayedly distributed on the mating flange, and the mating flange is fastened to the reserved hole positions of the connecting flange through the fastening bolts.

[0012] Further, the mating flange is fixed at both ends of the connecting pipe, and a valve is arranged in the middle of the connecting pipe.

[0013] Further, a thermocouple is externally connected to the explosion-proof pipe body, the electromagnetic coil is externally connected with an explosion-proof sleeve through the buried pipe, and the end of the explosion-proof sleeve is electrically connected to the air-cooled explosion-proof electromagnetic heater.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. When the utility model is in use, an electromagnetic coil is circumferentially and spirally wound along the extending direction of the heat-conducting inner pipe in the present application. After an alternating current is passed through the electromagnetic coil, the carriers in the heat-conducting inner pipe move at high speed and randomly, and the carriers collide and rub against the atoms to generate heat energy, so as to heat the crude oil in the pipe body. Compared with the traditional heating method, the electromagnetic heating skid in the present application directly and actively generates heat by a metal body, and has a large power density, so the heating speed is faster. The loss of heat transfer is avoided, so it is more energy-saving in use, and there is no open flame and heating medium, so the operation is safer and the environment is cleaner.

[0016] 2. When the utility model is in use, the sealing surfaces of the connecting flanges at both ends of the explosion-proof pipe body in the present application are provided with inner grooves and sealing gaskets are embedded therein. In this way, when combined and sealed with the outer convex ring of the mating flange, a socket structure is formed, so that the sealing gasket is restricted in the inner groove and will not move outwards to cause leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the external structure of the explosion-proof pipe body of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the connecting flange of the utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the explosion-proof tube body of the present utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of the device of the present utility model.

[0021] In the figure: 1. Explosion-proof tube body; 101. Heat-conducting inner tube; 102. Electromagnetic coil; 103. Thermal insulation layer; 104. Anti-seepage layer; 105. Explosion-proof outer tube; 2. Embedded tube; 3. Conduit; 4. Skid-mounted frame; 5. Connecting flange; 6. Inner groove; 7. Sealing gasket; 8. Matching flange; 9. Fastening bolt; 10. Connecting pipe; 11. Valve; 12. Thermocouple; 13. Explosion-proof sleeve; 14. Air-cooled explosion-proof electromagnetic heater. Specific embodiments

[0022] The following further describes in detail the embodiments of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0023] As Figures 1 to 4 shown, an explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipelines includes an explosion-proof tube body 1. The explosion-proof tube body 1 includes a heat-conducting inner tube 101, an electromagnetic coil 102, a thermal insulation layer 103, an anti-seepage layer 104, and an explosion-proof outer tube 105. The heat-conducting inner tube 101 is made of ferromagnetic cast iron conductor material, and the electromagnetic coil 102 is spirally wound circumferentially along the extending direction of the heat-conducting inner tube 101. After the electromagnetic coil 102 is energized with an alternating current, the heat-conducting inner tube 101 is uniformly heated. In this application, the electromagnetic coil 102 is spirally wound circumferentially along the extending direction of the heat-conducting inner tube 101. After the electromagnetic coil 102 is energized with an alternating current, the carriers in the heat-conducting inner tube 101 move at high speed and randomly, and the carriers collide and rub against the atoms to generate heat energy, thereby achieving the effect of heating the crude oil in the tube. Compared with the traditional heating method, the electromagnetic heating skid in this application directly actively generates heat by using a metal body, with a large power density, faster heating speed, avoiding heat transfer loss, thus being more energy-efficient, and having no open flame and heating medium, making the operation safer and the environment cleaner. The electromagnetic coil 102 is sleeved outside the heat-conducting inner tube 101, and the thermal insulation layer 103 made of asbestos material is sleeved outside the electromagnetic coil 102. The anti-seepage layer 104 made of high-density polyethylene material is sleeved outside the thermal insulation layer 103, and the explosion-proof outer tube 105 made of stainless steel flexible material is sleeved outside the anti-seepage layer 104;

[0024] As Figures 1 to 2As shown in the figure, a buried pipe 2 is embedded on one side of the explosion-proof pipe body 1, passing through the heat insulation layer 103, the anti-seepage layer 104 and the explosion-proof outer pipe 105. The buried pipe 2 is externally connected with a threading pipe 3. The explosion-proof pipe body 1 is fixed on the skid-mounted frame 4. Both ends of the explosion-proof pipe body 1 are integrally fixed with connecting flanges 5. A sunken inner groove 6 is formed outside the central hole of the connecting flange 5, and a sealing gasket 7 is embedded inside the inner groove 6. In this application, the sealing surface of the connecting flanges 5 at both ends of the explosion-proof pipe body 1 is provided with an inner groove 6 and a sealing gasket 7 is embedded therein. When combined and sealed with the outer convex ring of the matching flange 8, a socket structure is formed, so that the sealing gasket 7 is restricted inside the inner groove 6 and will not move outward to cause leakage. The connecting flange 5 is externally connected with a matching flange 8, and an outer convex ring matching the inner groove 6 is fixed outside the central hole of the matching flange 8. The matching flange 8 is circumferentially and arrayedly distributed with fastening bolts 9, and the matching flange 8 is fastened to the reserved hole positions of the connecting flange 5 through the fastening bolts 9. The matching flange 8 is fixed at both ends of the connecting pipe 10, and a valve 11 is arranged in the middle of the connecting pipe 10. The explosion-proof pipe body 1 is externally connected with a thermocouple 12. The electromagnetic coil 102 is externally connected with an explosion-proof sleeve 13 through the buried pipe 2, and the end of the explosion-proof sleeve 13 is electrically connected to the air-cooled explosion-proof electromagnetic heater 14.

[0025] Working principle: When using this kind of explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipelines, in this application, the electromagnetic coil 102 is circumferentially and spirally wound along the extending direction of the heat-conducting inner pipe 101. After the alternating current is passed into the electromagnetic coil 102, the carriers in the heat-conducting inner pipe 101 move at high speed and randomly, and the carriers collide and rub with the atoms to generate heat energy, thus achieving the effect of heating the crude oil in the pipe body. Compared with the traditional heating method, this electromagnetic heating skid in this application directly and actively generates heat by the metal body, with a large power density, so the heating speed is faster. It avoids the loss of heat transfer, so it is more energy-saving in use. And there is no open fire and heating medium, making the operation safer and the environment cleaner. In this application, the sealing surface of the connecting flanges 5 at both ends of the explosion-proof pipe body 1 is provided with an inner groove 6 and a sealing gasket 7 is embedded therein. When combined and sealed with the outer convex ring of the matching flange 8, a socket structure is formed, so that the sealing gasket 7 is restricted inside the inner groove 6 and will not move outward to cause leakage.

[0026] The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. An explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipelines, comprising an explosion-proof pipe body (1), characterized in that: The explosion-proof pipe body (1) comprises a heat-conducting inner pipe (101), an electromagnetic coil (102), a heat-insulating layer (103), an anti-seepage layer (104) and an explosion-proof outer pipe (105); the heat-conducting inner pipe (101) is covered with an electromagnetic coil (102) on the outside, and the electromagnetic coil (102) is covered with an asbestos-made heat-insulating layer (103) on the outside; the heat-conducting inner pipe (101) is made of a ferromagnetic cast iron conductor material, and the heat-conducting inner pipe (101) is spirally wound with the electromagnetic coil (102) in a circumferential direction along an extension direction; and after an alternating current is passed through the electromagnetic coil (102), the heat-conducting inner pipe (101) is uniformly heated; the heat-insulating layer (103) is covered with an anti-seepage layer (104) made of a high-density polyethylene material on the outside, and the anti-seepage layer (104) is covered with an explosion-proof outer pipe (105) made of a stainless steel flexible material on the outside.

2. The explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipeline according to claim 1 is characterized in that: An embedded pipe (2) penetrating the thermal insulation layer (103), the anti-seepage layer (104) and the explosion-proof outer pipe (105) is embedded on one side of the explosion-proof pipe body (1), and a threading pipe (3) is externally connected to the embedded pipe (2).

3. The explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipeline according to claim 1 is characterized in that: The explosion-proof pipe body (1) is fixed on the skid-mounted frame (4), and connecting flanges (5) are integrally fixed to both ends of the explosion-proof pipe body (1).

4. The explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipeline according to claim 3 is characterized in that: A sunken inner groove (6) is provided outside the hole of the connecting flange (5), and a sealing gasket (7) is embedded inside the inner groove (6).

5. The explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipeline according to claim 3 is characterized in that: The connecting flange (5) is externally connected to a matching flange (8), and an outer convex ring matching the inner groove (6) is fixed to the outside of the hole in the matching flange (8).

6. The explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipeline according to claim 5, characterized in that: The matching flange (8) is provided with fastening bolts (9) arranged in a circumferential array, and the matching flange (8) is fastened to the reserved holes of the connecting flange (5) via the fastening bolts (9).

7. The explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipeline according to claim 5, characterized in that: The matching flanges (8) are fixed to both ends of the connecting pipe (10), and a valve (11) is provided in the middle of the connecting pipe (10).

8. The explosion-proof electromagnetic heater skid for oilfield gathering and transportation pipeline according to claim 1 is characterized in that: The explosion-proof tube body (1) is externally connected to a thermocouple (12), the electromagnetic coil (102) is externally connected to an explosion-proof sleeve (13) via an embedded tube (2), and the end of the explosion-proof sleeve (13) is electrically connected to an air-cooled explosion-proof electromagnetic heater (14).

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