Rodless oil extraction heating system
By designing a rodless oil production heating system, heating components, sealing components and control components are used to heat paraffin crystallize in oil production operations, the problem of paraffin precipitation in oil pipes is solved, the oil production efficiency and safety are improved, and the risk of environmental pollution is reduced.
Patent Information
- Application Number
- CN202520488544.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2035-03-20
AI Technical Summary
During the oil production process of high wax wells, paraffin in the oil pipe precipitates and adheres to the inner wall of the oil pipe, resulting in a decrease in crude oil flow rate, a decrease in production efficiency, and may lead to downhole motor shutdown or damage, increasing maintenance costs. The existing pole-free oil production method requires the suspension of production for hot water or steam treatment. The project volume is large and cannot completely solve the wax problem. It also poses safety and environmental pollution risks.
A rodless oil production heating system is designed, including heating components, sealing components and control components. The heating component is inserted into the oil pipe of the oil production tree and heats it with a cable core and an insulation layer assembly. The sealing component seals the gap between the oil production tree and the heating component, and controls the component to adjust the heating time and heating power to prevent paraffin crystallization.
It realizes heating paraffin crystals while oil production operations to prevent them from condensing, improves mining efficiency, reduces the cost of cleaning paraffin crystals and environmental pollution risks, and improves the safety and operating life of the equipment.
Smart Images
Figure CN222823221U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rodless oil production, in particular to a rodless oil production heating system. Background Art
[0002] During the oil production process of high-wax wells, due to the lower formation temperature in the middle and upper part of the oil pipe close to the ground, the paraffin in the crude oil precipitates into crystals in the oil pipe and adheres to the inner wall of the oil pipe. As the attached paraffin continues to increase, the oil passage in the oil pipe continues to shrink, the resistance of the crude oil in the oil pipe increases, and the flow rate is greatly reduced, which not only reduces production efficiency, but also may cause the downhole motor to shut down or be damaged, thereby increasing maintenance and repair costs.
[0003] In the existing rodless oil production field, the main method currently used is to solve the waxing problem by stopping production and using hot water or steam. However, the oil well must be shut down during the construction process, and several tool vehicles are required for coordinated treatment, which involves a large amount of engineering work. Moreover, this treatment method cannot completely solve the waxing problem, and repeated hot well washing is required at intervals. This waxing treatment method not only requires stopping production, but also requires long-term investment of more manpower and material resources. The construction process and the treatment of the well washing fluid also face the risks of safety and environmental pollution. Utility Model Content
[0004] In view of this, an embodiment of the utility model provides a rodless oil production heating system, the main purpose of which is to provide a rodless oil production heating system that can operate without stopping production and can prevent wax from forming on the inner wall of the oil pipe.
[0005] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:
[0006] The utility model embodiment provides a rodless oil production heating system, the device comprising:
[0007] Heating components;
[0008] A sealing component, the sealing component comprising an upper component, a lower component, a clamping component and a sealing component, the upper component is detachably connected to the lower component, the lower part of the lower component is connected to the Christmas tree, the lower component has a first channel, the clamping component is arranged between the upper component and the lower component, the upper component has a second channel, the sealing component is arranged at the upper part of the second channel, and the heating component passes through the sealing component, the second channel, the clamping component, the first channel and the Christmas tree in sequence and extends into the interior of the oil pipe;
[0009] A control component, the control component includes a power supply component, a modulation component, an isolation transformer and a main control component, the main control component is connected to the modulation component, the power supply component and the isolation transformer are connected to the modulation component, and the isolation transformer is connected to the heating component.
[0010] Furthermore, the clamping component includes a clamping ring and a clamping sleeve, the clamping ring is fixed to the outside of the heating component, the clamping sleeve is installed on the upper part of the first channel, and the outer side of the clamping ring is attached to the inner side of the clamping sleeve.
[0011] Furthermore, the sealing component includes a sealing sleeve, a sealing packing layer and a sealing cover, the sealing sleeve is arranged on the upper part of the first channel, the sealing packing layer is arranged between the sealing sleeve and the heating component, and the sealing cover is installed on the top of the upper end component.
[0012] Furthermore, the heating component includes a cable core, an insulating layer assembly and a cable outer shell, and the insulating layer assembly is sleeved between the cable core and the cable outer shell.
[0013] Furthermore, the insulating layer assembly includes an insulating film, a thermal insulation filler layer, a pressure-resistant filler layer and a wear-resistant filler layer, the insulating film is arranged between the cable core and the thermal insulation filler layer, the pressure-resistant filler layer is arranged between the thermal insulation filler layer and the wear-resistant filler layer, and the wear-resistant filler layer is arranged between the pressure-resistant filler layer and the cable outer shell.
[0014] Furthermore, the heating component also includes a cable guide head, and the cable guide head is installed at one end of the cable core.
[0015] Furthermore, the power supply component includes a power supply component and a rectification component, the power supply component is connected to the rectification component, and the rectification component is connected to the modulation component.
[0016] Furthermore, the main control component includes a PLC controller and an interaction component, the interaction component is connected to the PLC controller, and the PLC controller is connected to the modulation component.
[0017] Compared with the prior art, the utility model has the following technical effects:
[0018] In the technical solution provided by the embodiment of the utility model, the function of the heating component is to heat the paraffin crystals in the oil pipe; the function of the sealing component is to seal the gap between the Christmas tree and the heating component, the sealing component includes an upper component, a lower component, a clamping component and a sealing component, the upper component is detachably connected to the lower component, the lower part of the lower component is connected to the Christmas tree, the lower component has a first channel, the clamping component is arranged between the upper component and the lower component, the upper component has a second channel, the sealing component is arranged at the upper part of the second channel, the heating component passes through the sealing component, the second channel, the clamping component, the first channel and the Christmas tree in sequence and extends into the interior of the oil pipe; the function of the control component is to adjust the heating power, heating time and heating protection of the heating component, the control component includes a power supply component, a modulation component, an isolation transformer and a main control component, the main control component is connected to the modulation component, the power supply component and the isolation transformer are connected to the modulation component, the isolation transformer is connected Regarding the heating component, compared with the prior art, the wax deposition problem is solved by stopping production and using hot water or steam. However, the oil well must be stopped during the construction process, and several tool vehicles are required for coordinated treatment, which involves a large amount of engineering work. Moreover, this treatment method cannot completely solve the wax deposition problem, and it is necessary to repeat hot well washing at intervals. This wax deposition treatment method not only requires stopping production, but also requires long-term investment of more manpower and material resources. The construction process and the treatment of the well washing fluid also face the risks of safety and environmental pollution. In the present technical solution, by inserting the heating component into the oil pipe of the Christmas tree, the control component adjusts the heating time and heating power, the paraffin crystals in the oil pipe are heated and melted, and the sealing component seals the gap between the Christmas tree and the heating component to prevent leakage during oil production. Not only can the paraffin crystals be heated while the oil production operation is in progress to prevent the paraffin crystals from condensing, which greatly improves the mining efficiency, but also reduces the labor cost and equipment cost invested in cleaning the paraffin crystals, and also improves the safety of the equipment and reduces the environmental pollution caused by the paraffin cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A structural schematic diagram of a rodless oil production heating system provided by an embodiment of the utility model;
[0020] Figure 2 A schematic diagram of the structure of a rodless oil production heating system and an oil production tree provided in an embodiment of the utility model;
[0021] Figure 3 A schematic diagram of the planar structure of a rodless oil production heating system and an oil production tree provided in an embodiment of the utility model;
[0022] Figure 4A schematic diagram of the structure of a heating component provided in an embodiment of the utility model;
[0023] Figure 5 A schematic structural diagram of a control component provided in an embodiment of the utility model.
[0024] Among them, 1-heating component, 11-cable core, 121-insulating film, 122-thermal insulation filler layer, 123-pressure-resistant filler layer, 124-wear-resistant filler layer, 13-cable housing, 14-cable guide head, 2-sealing component, 21-upper end component, 22-lower end component, 231-clamping ring, 232-ferrule, 241-sealing sleeve, 242-sealing filler layer, 243-sealing cover, 25-cavity, 26-first channel, 27-second channel, 311-power supply component, 312-rectifier component, 32-modulation component, 33-isolation transformer, 341-PLC controller, 342-interactive component, 9-oil tree, 91-oil pipe, 92-oil outlet. DETAILED DESCRIPTION
[0025] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0026] like Figures 1 to 5 As shown, the embodiment of the utility model provides a rodless oil production heating system, the device comprising:
[0027] Heating element 1;
[0028] A sealing component 2, the sealing component 2 comprises an upper component 21, a lower component 22, a clamping component and a sealing member, the upper component 21 is detachably connected to the lower component 22, the lower part of the lower component 22 is connected to the Christmas tree 9, the lower component 22 has a first passage 26, the clamping component is arranged between the upper component 21 and the lower component 22, the upper component 21 has a second passage 27, the sealing member is arranged at the upper part of the second passage 27, the heating component 1 passes through the sealing member, the second passage 27, the clamping component, the first passage 26 and the Christmas tree 9 in sequence and extends into the interior of the oil pipe 91;
[0029] The control component includes a power supply component, a modulation component 32, an isolation transformer 33 and a main control component, wherein the main control component is connected to the modulation component 32, the power supply component and the isolation transformer 33 are connected to the modulation component 32, and the isolation transformer 33 is connected to the heating component 1.
[0030] In the technical solution provided by the embodiment of the utility model, the function of the heating component 1 is to heat the paraffin crystals in the oil pipe 91; the function of the sealing component 2 is to seal the gap between the Christmas tree 9 and the heating component 1, and the sealing component 2 includes an upper component 21, a lower component 22, a clamping component and a sealing member, the upper component 21 is detachably connected to the lower component 22, the lower part of the lower component 22 is connected to the Christmas tree 9, the lower component 22 has a first channel 26, the clamping component is arranged between the upper component 21 and the lower component 22, and the sealing member is provided with a plurality of sealing members. The upper end component 21 has a second channel 27, the sealing member is arranged at the upper part of the second channel 27, the heating component 1 passes through the sealing member, the second channel 27, the clamping member, the first channel 26 and the Christmas tree 9 in sequence and extends into the oil pipe 91; the function of the control component is to adjust the heating power and heating time of the heating component 1, the control component includes a power supply component, a modulation component 32, an isolation transformer 33 and a main control component, the main control component is connected to the modulation component 32, the power supply component and the isolation transformer 33 are connected to the The modulation component 32, the isolation transformer 33 is connected to the heating component 1. Compared with the prior art, the wax deposition problem is solved by stopping production and using hot water or steam. However, the oil well must be stopped during the construction process, and several tool vehicles are required for coordinated treatment, which has a large amount of engineering work. Moreover, this treatment method cannot completely solve the wax deposition problem, and it is necessary to repeat the hot well washing at intervals. This wax deposition treatment method not only requires stopping production, but also requires long-term investment of more manpower and material resources. The construction process and the treatment of the well washing fluid also face the risks of safety and environmental pollution. In this technical solution, by inserting the heating component 1 into the oil pipe 91 of the oil tree 9, the control component adjusts the heating time and heating power, and the paraffin crystals in the oil pipe 91 are heated and melted. The sealing component 2 seals the gap between the oil tree 9 and the heating component 1 to prevent leakage during oil production. Not only can the paraffin crystals be heated while the oil production operation is in progress to prevent the paraffin crystals from condensing, which greatly improves the mining efficiency, but also reduces the labor cost and equipment cost invested in cleaning the paraffin crystals, and also improves the safety of the equipment and reduces the environmental pollution caused by the cleaning process of the paraffin.
[0031] The function of the heating component 1 is to heat the paraffin crystals in the oil pipe 91. The heating component 1 mainly adopts a heating cable. Specifically, the heating component 1 includes a cable core 11, an insulating layer component and a cable casing 13. The insulating layer component is sleeved between the cable core 11 and the cable casing 13. The cable core 11 is used as a conductor to conduct electrical energy. The cross-sectional area of the cable core 11 matches the heater power. Specifically, in order to reduce the skin effect, the cable core 11 preferably adopts a single-core multi-strand copper core. The insulating layer component is composed of multiple layers of materials to wrap the cable core 11. The function of the cable casing 13 is to utilize the skin effect. Eddy currents are formed on its surface to generate heat energy, and the heat energy is dissipated into the well fluid flowing through the oil pipe 91, thereby raising the temperature of the well fluid to prevent wax deposition and increase the fluidity of the well fluid. In addition, the cable housing 13 can also provide support, sealing and protection for the heating component 1. The cable housing 13 is preferably a seamless steel pipe made of carbon steel with high magnetic permeability. The function of the sealing component 2 is to seal the gap between the Christmas tree 9 and the heating component 1, and the sealing component 2 also has the function of fixing and carrying the heating component 1. The sealing component 2 includes an upper component 21, a lower component 22, a clamping component and a sealing member. The upper component 21 is detachably connected to the lower component 22, the lower part of the lower component 22 is connected to the Christmas tree 9, the lower component 22 has a first channel 26, the clamping component is arranged between the upper component 21 and the lower component 22, the upper component 21 has a second channel 27, the sealing member is arranged at the upper part of the second channel 27, the heating component 1 passes through the sealing member, the second channel 27, the clamping member, the first channel 26 and the Christmas tree 9 in sequence and extends into the interior of the oil pipe 91, the upper component 21 and the lower component The upper component 21 is provided with an oil outlet hole 92 on the side thereof, and a clamping component is provided in the cavity 25. The lower component 22 is installed on the upper end of the Christmas tree 9 by bolts, and the upper component 21 is installed on the upper part of the lower component 22 by bolts. The clamping component is provided in the cavity 25 between the upper component 21 and the lower component 22, and can fix the heating component 1. The sealing member is provided on the upper part of the upper component 21, and the sealing member is sleeved on the outside of the heating component 1. At the same time, the sealing member can seal the gap between the heating component 1 and the upper component 21.The function of the control component is to adjust the heating power and heating time of the heating component 1. The control component includes a power supply component, a modulation component 32, an isolation transformer 33 and a main control component. The main control component is connected to the modulation component 32, the power supply component and the isolation transformer 33 are connected to the modulation component 32, the isolation transformer 33 is connected to the heating component 1, the power supply component supplies power to the entire device, the modulation component 32 modulates the direct current into the intermediate frequency pulse voltage required by the heating component 1, the isolation transformer 33 has a three-level output, and can isolate and amplify the pulse voltage. The role of isolation is to prevent load failure from causing control end failure, and the role of amplification is to reduce the current by amplifying the voltage, thereby reducing the loss on the circuit. consumption, and meet the heating power requirements. The main control component facilitates personnel to transport and transmit instructions to the equipment, and facilitates personnel to control the heating. In this technical solution, by inserting the heating component 1 into the oil pipe 91 of the Christmas tree 9, the control component adjusts the heating time and heating power, and the paraffin crystals in the oil pipe 91 are heated and melted. The sealing component 2 seals the gap between the Christmas tree 9 and the heating component 1 to prevent leakage during oil production. Not only can the paraffin crystals be heated during the oil production operation to prevent the paraffin crystals from condensing, which greatly improves the production efficiency, but also reduces the labor cost and equipment cost of cleaning the paraffin crystals, and also improves the safety of the equipment and reduces the environmental pollution caused by the cleaning process. ;
[0032] Furthermore, the clamping component includes a clamping ring 231 and a clamping sleeve 232 , the clamping ring 231 is fixed to the outside of the heating component 1 , the clamping sleeve 232 is installed on the upper part of the first channel 26 , and the outer side of the clamping ring 231 is attached to the inner side of the clamping sleeve 232 . In this embodiment, the clamping component is further defined, and the clamping component includes a clamping ring 231 and a ferrule 232. The clamping ring 231 adopts a conical cable clamp, and the ferrule 232 adopts a conical cable ferrule 232. The clamping ring 231 and the ferrule 232 cooperate with each other to fix the position of the heating component 1. The sealing component includes a sealing sleeve 241, a sealing packing layer 242 and a sealing cover 243. The sealing sleeve 241 is arranged on the upper part of the first channel 26, and the sealing packing layer 242 is arranged between the sealing sleeve 241 and the heating component 1. The sealing cover 243 is installed on the top of the upper end component 21, and the sealing sleeve 241 is installed on the upper part of the upper end component 21. The sealing packing layer 242 is arranged between the sealing sleeve 241 and the heating component 1. The sealing packing layer 242 is made of a material that is resistant to high temperature and has a small expansion coefficient. The sealing cover 243 is installed on the upper part of the sealing sleeve 241, which can compact the sealing packing layer 242, thereby improving the sealing performance. The specific installation steps are as follows:
[0033] The lower end of the ferrule 232 is wedged and stuck in the first channel 26, and then the heating component 1 is sent into the oil pipe 91 along the ferrule 232 and the first channel 26. After the heating component 1 reaches the predetermined position, the retaining ring 231 is installed and fixed on the heating component 1, and then the retaining ring 231 is dropped into the ferrule 232 so that the ferrule 232 and the retaining ring 231 are fully fitted, and then one end of the heating component 1 is passed through the seal and the second channel 27, and then the lower end component 22 and the upper end component 21 are connected, the heating component 1 passes through the sealing sleeve 241, and then the sealing packing layer 242 is placed in the gap between the sealing sleeve 241 and the heating component 1, and the sealing cover 243 is tightened to compact the sealing packing layer 242 to complete the installation.
[0034] Furthermore, the insulating layer assembly includes an insulating film 121, a thermal insulation filler layer 122, a pressure-resistant filler layer 123 and a wear-resistant filler layer 124, the insulating film 121 is arranged between the cable core 11 and the thermal insulation filler layer 122, the pressure-resistant filler layer 123 is arranged between the thermal insulation filler layer 122 and the wear-resistant filler layer 124, and the wear-resistant filler layer 124 is arranged between the pressure-resistant filler layer 123 and the cable outer shell 13. In this embodiment, the insulating layer component is further defined, and the insulating film 121 is made of polyimide film. The insulating film 121 is the innermost insulating material to provide insulation protection for the cable core 11. The heat-insulating filler layer 122 is a high-temperature resistant insulating filler, mainly made of high-temperature phlogopite mica, which can provide the main insulation protection. The pressure-resistant filler layer 123 is made of a pressure-resistant heat-insulating filler, mainly polytetrafluoroethylene, which has the function of resisting high pressure and reducing the heat of the cable sheath 13 from being sensed to the inside of the cable, while providing a certain degree of flexible support. The wear-resistant filler layer 124 has the function of filling the gap between the heat-insulating filler layer 122 and the cable sheath 13, playing a role of stability and lubrication, preferably glass fiber. Optionally, the heating component 1 also includes a cable guide head 14, which is installed at one end of the cable core 11, and its function is to provide a good guiding effect for the heating component 1 to enter the well, and at the same time seal the cable core 11 inside the heating component 1. The material of the guide head is consistent with that of the cable sheath 13, which is convenient for welding.
[0035] Furthermore, the power supply component includes a power supply component 311 and a rectifying component 312, wherein the power supply component 311 is connected to the rectifying component 312, and the rectifying component 312 is connected to the modulating component 32. In this embodiment, the power supply component is further defined, wherein the power supply component 311 mainly adopts an AC power supply to provide electric energy to the entire device, and the rectifying component 312 rectifies the AC power supply into a DC power supply, and then transmits it to the modulating component 32. The modulating component 32 adopts an IGBT and a driving module, and modulates the DC power rectified by the rectifying component 312 into the intermediate frequency pulse voltage required by the heating component 1 by receiving the PWM signal of the main control component, and then outputs it to the isolation transformer 33.
[0036] Furthermore, the main control component includes a PLC controller 341 and an interactive component 342, wherein the interactive component 342 is connected to the PLC controller 341, and the PLC controller 341 is connected to the modulation component 32. In this embodiment, the main control component is further defined, and the PLC controller 341 and the interactive component 342 are connected by a communication cable, so that the PLC data is displayed, and the instructions from the on-site personnel are transmitted to the PLC controller 341, so that the PLC controller 341 controls the heating by setting parameters; and records the operation data from the PLC controller 341; the interactive component 342 adopts a touch-screen dedicated computer with a storage function, and the interactive component 342 enables the on-site personnel to intuitively understand the real-time operation of the heating system, and can also view the historical operation data and historical trends of the heating system, and make timely adjustments. The PLC controller 341 implements manual or automatic control of the heater through instructions from the interactive component 342 or the automation network, and analyzes, judges, and processes the sensor data such as the collected current and temperature. , realizing short circuit, open circuit, overcurrent, overload, overtemperature and other protections for the heating system; according to the oil outlet temperature, PID control is performed on the heating power to reduce energy consumption while preventing wax deposition, thereby achieving the purpose of energy saving and efficiency improvement; the smooth adjustment of PID can reduce the impact of the system on the power grid, and the PLC controller 341 is connected to the automation network through the communication port, which is convenient for centralized and efficient management of the automation system. In this technical solution, the wax deposition treatment method of high-wax wells in the original rodless oil production process is changed, from shutting down for wax removal to preventing wax deposition in the production process, which improves the crude oil production efficiency, reduces the workload of on-site construction, reduces the difficulty of construction, and at the same time reduces the risks of safety and environmental pollution caused by construction, ensures the smoothness of the oil circuit of the oil pipeline 91, reduces the failure of the unit, increases the operating life of the unit, and improves the production efficiency and performance ratio.
[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A rodless oil production heating system, characterized in that: include: Heating components; A sealing component, the sealing component comprising an upper component, a lower component, a clamping component and a sealing member, the upper component is detachably connected to the lower component, the lower part of the lower component is connected to the Christmas tree, the lower component has a first channel, the clamping component is arranged between the upper component and the lower component, the upper component has a second channel, the sealing member is arranged at the upper part of the second channel, and the heating component passes through the sealing member, the second channel, the clamping component, the first channel and the Christmas tree in sequence and extends into the interior of the oil pipe; A control component, the control component includes a power supply component, a modulation component, an isolation transformer and a main control component, the main control component is connected to the modulation component, the power supply component and the isolation transformer are connected to the modulation component, and the isolation transformer is connected to the heating component.
2. The rodless oil production heating system according to claim 1, characterized in that: The clamping component includes a clamping ring and a clamping sleeve, wherein the clamping ring is fixed on the outside of the heating component, and the clamping sleeve is installed on the upper part of the first channel, and the outer side of the clamping ring is attached to the inner side of the clamping sleeve.
3. The rodless oil production heating system according to claim 2, characterized in that: The sealing member comprises a sealing sleeve, a sealing packing layer and a sealing cover, wherein the sealing sleeve is arranged at the upper part of the first channel, the sealing packing layer is arranged between the sealing sleeve and the heating component, and the sealing cover is installed on the top of the upper end component.
4. The rodless oil production heating system according to claim 1, characterized in that: The heating component comprises a cable core, an insulating layer assembly and a cable outer shell, wherein the insulating layer assembly is sleeved between the cable core and the cable outer shell.
5. The rodless oil production heating system according to claim 4, characterized in that: The insulating layer assembly includes an insulating film, a thermal insulation filler layer, a pressure-resistant filler layer and a wear-resistant filler layer. The insulating film is arranged between the cable core and the thermal insulation filler layer, the pressure-resistant filler layer is arranged between the thermal insulation filler layer and the wear-resistant filler layer, and the wear-resistant filler layer is arranged between the pressure-resistant filler layer and the cable outer shell.
6. The rodless oil production heating system according to claim 4, characterized in that: The heating component further comprises a cable guide head mounted at one end of the cable core.
7. A rodless oil production heating system according to any one of claims 1 to 6, characterized in that: The power supply component includes a power supply component and a rectifying component, the power supply component is connected to the rectifying component, and the rectifying component is connected to the modulation component.
8. The rodless oil production heating system according to claim 7, characterized in that: The main control component includes a PLC controller and an interaction component, the interaction component is connected to the PLC controller, and the PLC controller is connected to the modulation component.