CN107605433A - Paraffin Removal device under a kind of smart well - Google Patents
Paraffin Removal device under a kind of smart well Download PDFInfo
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- 239000012188 paraffin wax Substances 0.000 title description 3
- 230000002265 prevention Effects 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 230000005855 radiation Effects 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims description 59
- 239000003814 drug Substances 0.000 claims description 14
- 239000011152 fibreglass Substances 0.000 claims description 10
- 230000035515 penetration Effects 0.000 claims description 6
- 230000008021 deposition Effects 0.000 abstract description 18
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 239000001993 wax Substances 0.000 description 107
- 238000000034 method Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000004018 waxing Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 241001365958 Ceroplastes cirripediformis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
本发明公开了一种智能井下清防蜡装置，包括均匀分布在油管外壁的如下三个模块：强磁防蜡模块、微波加热清蜡模块和化学防清蜡模块，以上三个模块均连接有井上的地面控制箱连接。本发明以防蜡为主，清防蜡技术相结合，利用辐射厚度传感器及温度传感器对井下情况进行快速识别；利用磁控管发射微波进行井下加热，和可控的毛细管投药技术进行清蜡；利用强磁防蜡提高清蜡周期；模块整个装置可直接代替油管之间的接箍；并且，本发明无需停止生产，可智能识别井下结蜡情况，开启对应模块，清蜡效率高。
The invention discloses an intelligent downhole wax removal and anti-wax device, which comprises the following three modules evenly distributed on the outer wall of the tubing: a strong magnetic anti-wax module, a microwave heating wax removal module and a chemical anti-wax module. The above three modules are all connected with Ground control box connection on the well. The invention mainly focuses on wax prevention and combines wax removal and prevention technology, uses radiation thickness sensors and temperature sensors to quickly identify the downhole conditions; uses magnetron to emit microwaves for downhole heating, and controllable capillary tube dosing technology to remove wax; The wax removal cycle is improved by using strong magnetic wax prevention; the entire module device can directly replace the coupling between oil pipes; moreover, the invention does not need to stop production, and can intelligently identify the wax deposition in the well, open the corresponding module, and have high wax removal efficiency.
Description
技术领域technical field
本发明属于石油开采技术领域，涉及一种智能井下清防蜡装置。The invention belongs to the technical field of petroleum exploitation, and relates to an intelligent downhole wax removal and prevention device.
背景技术Background technique
在石油开采的过程中，随着井筒液柱的举升，温度和压力逐渐降低，溶解在石油中的石蜡便以结晶析出、长大聚集，沉积在管壁等固相表面上，出现结蜡现象。井下结蜡会缩小油管孔径，增大抽油杆外径，增加油流阻力，导致油管沿程损失增大，使油井减产；在结蜡井段的摩擦阻力增大，对抽油杆管发生偏磨，同时，会使得上冲程的悬点载荷增加；下冲程中的悬点载荷减小，引起交变载荷的增大，影响抽油杆工作寿命；结蜡严重时会把油井堵死，发生卡泵现象。In the process of oil extraction, as the wellbore fluid column rises, the temperature and pressure gradually decrease, and the paraffin dissolved in the oil crystallizes out, grows up and aggregates, and deposits on the solid surface such as the pipe wall, resulting in wax deposition Phenomenon. Downhole wax deposition will reduce the diameter of the tubing, increase the outer diameter of the sucker rod, increase the oil flow resistance, increase the loss along the tubing, and reduce the production of the oil well. Eccentric wear, at the same time, will increase the suspension point load in the upstroke; the suspension point load in the downstroke will decrease, causing an increase in alternating load and affecting the working life of the sucker rod; when the wax deposition is serious, the oil well will be blocked. A stuck pump has occurred.
目前现有的井下清防蜡技术有机械清蜡、热力清蜡、化学防蜡、强磁防蜡及油管内衬涂层防蜡技术等。机械清蜡是在结蜡达到一定程度时，利用机械手段进行刮蜡，但是这种方法不能清除抽油杆接头和限位器上的蜡，还需要定期辅以其他的清蜡方式；热洗清蜡存在热利用率低、洗井阀故障多等缺点；电热抽油杆清防蜡能耗高，对空心抽油杆的要求特别严格；井下微波虽然能耗低，但持续加热会损害井下设备；化学清蜡在井上投药导致药剂无法及时作用至结蜡部位。现有的清防蜡装置多使用单一清防蜡技术，并且不同油井的蜡质含量不同，结蜡速度不同，使用单一清防蜡技术，会导致能耗高，效率低，操作麻烦，没有体现以防为主，清防结合的思想。传统的清防蜡技术都是通过井口的抽油机载荷来推断井下的结蜡情况，但是井下的结蜡情况常常与井口的模拟计算厚度产生误差，造成不必要的能源或清防蜡药剂浪费。At present, the existing downhole wax removal and prevention technologies include mechanical wax removal, thermal wax removal, chemical wax removal, strong magnetic wax removal and tubing lining coating wax removal technologies, etc. Mechanical wax removal is to use mechanical means to scrape wax when the wax deposition reaches a certain level, but this method cannot remove the wax on the sucker rod joint and limiter, and it needs to be supplemented by other wax removal methods regularly; hot washing Wax removal has disadvantages such as low heat utilization rate and many failures of well flushing valves; electric-heated sucker rods have high energy consumption for wax removal, and the requirements for hollow sucker rods are particularly strict; although downhole microwave energy consumption is low, continuous heating will damage downhole Equipment; chemical paraffin removal on the well leads to the inability of the chemical to act on the wax deposition site in time. Existing wax removal and prevention devices mostly use a single wax removal and prevention technology, and different oil wells have different wax contents and wax deposition speeds. Using a single wax removal and prevention technology will lead to high energy consumption, low efficiency, and troublesome operation. Focus on prevention and combine cleanliness and defense. The traditional wax removal and anti-wax technology is to infer the downhole wax deposition situation through the load of the pumping unit at the wellhead, but the downhole wax deposition situation often has an error with the simulated calculation thickness of the wellhead, resulting in unnecessary waste of energy or wax removal and anti-wax agents .
发明内容Contents of the invention
本发明的目的是提供一种智能井下清防蜡装置，提高了现有清蜡装置的清蜡效率。The object of the present invention is to provide an intelligent downhole wax removal and prevention device, which improves the wax removal efficiency of the existing wax removal device.
本发明所采用的技术方案是，一种智能井下清防蜡装置，包括均匀分布在油管外壁的如下三个模块：强磁防蜡模块、微波加热清蜡模块和化学防清蜡模块，以上三个模块均和位于井上的地面控制箱连接；The technical solution adopted in the present invention is an intelligent downhole wax removal and prevention device, which includes the following three modules evenly distributed on the outer wall of the tubing: a strong magnetic wax removal module, a microwave heating wax removal module and a chemical wax removal module. Each module is connected to the ground control box located on the well;
强磁防蜡模块包括第一密闭保护壳，第一密闭保护壳中设置有第一控制开关，第一控制开关分别连接有第一电缆和辐射厚度传感器，第一电缆从第一密闭保护壳中穿出与地面控制箱连接，辐射厚度传感器穿过第一密闭保护壳伸到上下两油管的间隙处，第一密闭保护壳中设置有第一强电磁铁，第一强电磁铁外围环绕有第一电磁屏蔽板，第一密闭保护壳内壁上固定有第一散热器；The strong magnetic anti-wax module includes a first airtight protective shell, and a first control switch is arranged in the first airtight protective shell, and the first control switch is respectively connected with a first cable and a radiation thickness sensor, and the first cable passes through the first airtight protective shell The radiation thickness sensor passes through the first airtight protective shell and extends to the gap between the upper and lower oil pipes. The first airtight protective shell is provided with a first strong electromagnet, and the first strong electromagnet is surrounded by a second An electromagnetic shielding plate, a first radiator is fixed on the inner wall of the first airtight protective shell;
微波加热清蜡模块包括第二密闭保护壳，第二密闭保护壳中设置有第二控制开关，第二控制开关分别连接有第二电缆和温度传感器，第二电缆从第二密闭保护壳中穿出与地面控制箱连接，温度传感器穿过第二密闭保护壳伸到上下两个油管的间隙处，第二密闭保护壳中设置有与第二电缆连接的磁控管，磁控管外围环绕有第二电磁屏蔽板，且磁控管连接有第二散热器，第二散热器固定在第二密闭保护壳的内壁上。The microwave heating wax removal module includes a second airtight protective shell, and a second control switch is arranged in the second airtight protective shell, and the second control switch is respectively connected with a second cable and a temperature sensor, and the second cable passes through the second airtight protective shell. The temperature sensor is connected to the ground control box, and the temperature sensor extends through the second airtight protective shell to the gap between the upper and lower oil pipes. The second airtight protective shell is provided with a magnetron connected to the second cable, and the magnetron is surrounded by The second electromagnetic shielding plate, and the magnetron is connected with a second radiator, and the second radiator is fixed on the inner wall of the second airtight protective shell.
第一密闭保护壳与油管的连接处设置有第一丝纹，第一密闭保护壳外壁上靠近第一密闭保护壳与油管的连接处设置有第一玻璃钢穿透片。A first thread is provided at the connection between the first airtight protection shell and the oil pipe, and a first glass fiber reinforced plastic penetration piece is provided on the outer wall of the first airtight protection shell close to the connection between the first airtight protection shell and the oil pipe.
第二密闭保护壳与油管的连接处设置有第二丝纹，第二密闭保护壳外壁上靠近第二密闭保护壳与油管的连接处设置有第二玻璃钢穿透片。A second thread is provided at the junction of the second airtight protective shell and the oil pipe, and a second glass fiber reinforced plastic penetration sheet is arranged on the outer wall of the second airtight protective shell close to the junction of the second airtight protective shell and the oil pipe.
化学防清蜡模块包括第三密闭保护壳，第三密闭保护壳中设置有电控阀门，电控阀门分别连接有第三电缆、毛细管和单向阀，毛细管从第三密闭保护壳中穿出至井上，单向阀分别穿过第三密闭保护壳和上下两油管的间隙处连接有药箱，药箱固定在油管内壁。The chemical anti-wax removal module includes a third airtight protective shell, and an electric control valve is arranged in the third airtight protective shell, and the electric control valve is respectively connected with a third cable, a capillary and a one-way valve, and the capillary passes through the third airtight protective shell To the well, the one-way valve passes through the third airtight protective shell and the gap between the upper and lower oil pipes to connect with a medicine box, and the medicine box is fixed on the inner wall of the oil pipe.
第三密闭保护壳与油管的连接处设置有第三丝纹。The connection between the third airtight protective shell and the oil pipe is provided with a third thread.
药箱上均匀分布有多个孔。A plurality of holes are evenly distributed on the medicine box.
本发明的有益效果是：本发明的井下清防蜡装置以防蜡为主，清防蜡技术相结合；利用强磁防蜡提高清蜡周期；利用辐射厚度传感器及温度传感器对井下情况进行快速识别；利用磁控管16发射微波进行井下加热，和可控的毛细管24投药技术进行清蜡；整个装置可直接代替油管之间的接箍；并且，本发明无需停止生产，可智能识别井下结蜡情况，开启对应模块，清蜡效率高。The beneficial effects of the present invention are: the downhole wax removal and prevention device of the present invention is mainly based on wax removal and wax removal technology; the wax removal cycle is improved by using strong magnetic wax removal; the radiation thickness sensor and temperature sensor are used to quickly monitor the downhole identification; use the magnetron 16 to emit microwaves for downhole heating, and the controllable capillary 24 dosing technology for wax removal; the whole device can directly replace the coupling between oil pipes; moreover, the present invention can intelligently identify downhole knots without stopping production In case of wax, turn on the corresponding module, and the efficiency of wax removal is high.
附图说明Description of drawings
图1是本发明一种智能井下清防蜡装置的结构示意图；Fig. 1 is a structural representation of an intelligent downhole wax removal and prevention device of the present invention;
图2是本发明一种智能井下清防蜡装置在井下连接方式的结构示意图；Fig. 2 is a structural schematic diagram of the underground connection mode of an intelligent downhole wax removal and prevention device of the present invention;
图3是本发明一种智能井下清防蜡装置中强磁防蜡模块的结构示意图；Fig. 3 is a structural schematic diagram of a strong magnetic anti-wax module in an intelligent downhole wax removal and anti-wax device of the present invention;
图4是本发明一种智能井下清防蜡装置中微波加热清蜡模块的结构示意图；Fig. 4 is a structural schematic diagram of a microwave heating wax removal module in an intelligent downhole wax removal and prevention device of the present invention;
图5是本发明一种智能井下清防蜡装置中化学防清蜡模块的结构示意图。Fig. 5 is a structural schematic diagram of a chemical anti-wax removal module in an intelligent downhole wax removal and prevention device of the present invention.
图中，1.油管，2.控制箱，3.第一密闭保护壳，4.第一控制开关，5.第一电缆，6.辐射厚度传感器，7.第一强电磁铁，8.第一电磁屏蔽板，9.第一散热器，10.第一丝纹，11.第一玻璃钢穿透片，12.第二密闭保护壳，13.第二控制开关，14.第二电缆，15.温度传感器，16.磁控管，17.第二电磁屏蔽板，18.第二散热器，19.第二丝纹，20.第二玻璃钢穿透片，21.第三密闭保护壳，22.电控阀门，23.第三电缆，24.毛细管，25.单向阀，26.药箱，27.第三丝纹，28.孔，29.强磁防蜡模块，30.微波加热清蜡模块，31.化学防清蜡模块。In the figure, 1. Oil pipe, 2. Control box, 3. The first airtight protective shell, 4. The first control switch, 5. The first cable, 6. Radiation thickness sensor, 7. The first strong electromagnet, 8. The first An electromagnetic shielding plate, 9. the first radiator, 10. the first silk thread, 11. the first fiberglass penetration sheet, 12. the second airtight protective shell, 13. the second control switch, 14. the second cable, 15 .Temperature sensor, 16. Magnetron, 17. The second electromagnetic shielding plate, 18. The second radiator, 19. The second silk thread, 20. The second fiberglass penetration sheet, 21. The third airtight protective shell, 22 .Electric control valve, 23. Third cable, 24. Capillary tube, 25. One-way valve, 26. Medicine box, 27. Third thread, 28. Hole, 29. Strong magnetic anti-wax module, 30. Microwave heating cleaning Wax module, 31. Chemical anti-wax removal module.
具体实施方式detailed description
下面结合附图和具体实施方式对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
本发明一种智能井下清防蜡装置，结构如图1和图2所示，包括均匀分布在油管1外壁的如下三个模块：强磁防蜡模块29、微波加热清蜡模块30和化学防清蜡模块31，以上三个模块均和位于井上的地面控制箱2连接。An intelligent downhole wax removal and prevention device according to the present invention has the structure shown in Figures 1 and 2, and includes the following three modules evenly distributed on the outer wall of the tubing 1: a strong magnetic wax removal module 29, a microwave heating wax removal module 30 and a chemical anti-wax module. The wax removal module 31, the above three modules are all connected with the ground control box 2 located on the well.
如图3所示，强磁防蜡模块29包括第一密闭保护壳3，第一密闭保护壳3中设置有第一控制开关4，第一控制开关4分别连接有第一电缆5和辐射厚度传感器6，第一电缆5从第一密闭保护壳3中穿出与地面控制箱2连接，辐射厚度传感器6穿过第一密闭保护壳3伸到上下两油管1的间隙处，第一密闭保护壳3中设置有第一强电磁铁7，第一强电磁铁7外围环绕有第一电磁屏蔽板8，第一密闭保护壳3内壁上固定有第一散热器9。As shown in Figure 3, the strong magnetic anti-wax module 29 includes a first airtight protective shell 3, and a first control switch 4 is arranged in the first airtight protective shell 3, and the first control switch 4 is respectively connected with a first cable 5 and a radiation thickness The sensor 6, the first cable 5 passes through the first airtight protective shell 3 and is connected to the ground control box 2, the radiation thickness sensor 6 passes through the first airtight protective shell 3 and extends to the gap between the upper and lower oil pipes 1, and the first airtight protection The shell 3 is provided with a first strong electromagnet 7 , the first strong electromagnet 7 is surrounded by a first electromagnetic shielding plate 8 , and a first radiator 9 is fixed on the inner wall of the first airtight protective shell 3 .
其中第一密闭保护壳3与油管1的连接处设置有第一丝纹10，第一密闭保护壳3外壁上靠近第一密闭保护壳3与油管1的连接处设置有第一玻璃钢穿透片11。The connection between the first airtight protection shell 3 and the oil pipe 1 is provided with a first thread 10, and the outer wall of the first airtight protection shell 3 is provided with a first glass fiber reinforced plastic penetrating sheet close to the connection between the first airtight protection shell 3 and the oil pipe 1 11.
如图4所示，微波加热清蜡模块30包括第二密闭保护壳12，第二密闭保护壳12中设置有第二控制开关13，第二控制开关13分别连接有第二电缆114和温度传感器15，第二电缆14从第二密闭保护壳12中穿出与地面控制箱2连接，温度传感器15穿过第二密闭保护壳12伸到上下两个油管1的间隙处，第二密闭保护壳12中设置有与第二电缆14连接的磁控管16，磁控管16外围环绕有第二电磁屏蔽板17，且磁控管16连接有第二散热器18，第二散热器18固定在第二密闭保护壳12的内壁上。As shown in Figure 4, the microwave heating wax removal module 30 includes a second airtight protective shell 12, a second control switch 13 is arranged in the second airtight protective shell 12, and the second control switch 13 is respectively connected with a second cable 114 and a temperature sensor 15. The second cable 14 passes through the second airtight protective shell 12 to connect with the ground control box 2. The temperature sensor 15 passes through the second airtight protective shell 12 and extends to the gap between the upper and lower oil pipes 1. The second airtight protective shell 12 is provided with a magnetron 16 connected to the second cable 14, the magnetron 16 is surrounded by a second electromagnetic shielding plate 17, and the magnetron 16 is connected with a second radiator 18, and the second radiator 18 is fixed on On the inner wall of the second airtight protective case 12 .
其中，第二密闭保护壳12与油管1的连接处设置有第二丝纹19，第二密闭保护壳12外壁上靠近第二密闭保护壳12与油管1的连接处设置有第二玻璃钢穿透片20。Wherein, the second airtight protection shell 12 is provided with the second thread 19 at the joint of the oil pipe 1, and the second glass fiber reinforced plastic penetrating surface is provided on the outer wall of the second airtight protective shell 12 close to the joint of the second airtight protective shell 12 and the oil pipe 1. slice 20.
如图5所示，化学防清蜡模块31包括第三密闭保护壳21，第三密闭保护壳21中设置有电控阀门22，电控阀门22分别连接有第三电缆23、毛细管24和单向阀25，毛细管24从第三密闭保护壳21中穿出至井上，单向阀25分别穿过第三密闭保护壳21和油管1连接有药箱26，药箱26上均匀分布有多个孔28，其中，第三密闭保护壳21与油管1的连接处设置有第三丝纹27。As shown in Figure 5, the chemical anti-wax removal module 31 includes a third airtight protection shell 21, and the third airtight protection shell 21 is provided with an electric control valve 22, and the electric control valve 22 is respectively connected with a third cable 23, a capillary tube 24 and a single valve. The one-way valve 25 and the capillary tube 24 pass through the third airtight protective shell 21 to the well, and the one-way valve 25 respectively passes through the third airtight protective shell 21 and the oil pipe 1 to connect with the medicine box 26, and the medicine box 26 is evenly distributed with a plurality of A hole 28 , wherein a third thread 27 is provided at the junction of the third airtight protective shell 21 and the oil pipe 1 .
本发明一种智能井下清防蜡装置的具体工作原理如下：The specific working principle of an intelligent downhole wax removal and prevention device of the present invention is as follows:
药箱16中预先存放有固体防蜡剂，固体防蜡剂从孔28渗透到油管1内壁，起到防蜡作用。A solid anti-wax agent is prestored in the medicine box 16, and the solid anti-wax agent penetrates into the inner wall of the oil pipe 1 from the hole 28 to play an anti-wax effect.
接通电源后，辐射厚度传感器6将油管1的结蜡厚度相关数据通过第一电缆5传输给控制箱2，同时，温度传感器15将油管1的温度数据通过第二电缆14传输给控制箱2，由控制箱2根据所采集的数据选择是否开启强磁防蜡模块29、微波加热清蜡模块30和化学防清蜡模块31，温度传感器15识别工作温度超过设定温度20℃以上时，关闭微波加热清蜡模块30，直到工作温度降低至设定温度以下。After the power is turned on, the radiation thickness sensor 6 transmits the wax thickness related data of the oil pipe 1 to the control box 2 through the first cable 5, and at the same time, the temperature sensor 15 transmits the temperature data of the oil pipe 1 to the control box 2 through the second cable 14 The control box 2 selects whether to turn on the strong magnetic anti-wax module 29, the microwave heating wax removal module 30 and the chemical anti-wax removal module 31 according to the collected data. The wax removal module 30 is heated by microwave until the working temperature drops below the set temperature.
在辐射厚度传感器6识别无结蜡情况下，只开启强磁防蜡模块29，使强电磁铁7产生的磁场穿透玻璃钢，使得在结晶温度附近处于无序热运动中的蜡分子获得了能量，调整了彼此的磁撞方位使其不宜凝结，同时利用药箱16中的固体防蜡剂进行防蜡。When the radiation thickness sensor 6 identifies no wax deposition, only the strong magnetic anti-wax module 29 is turned on, so that the magnetic field generated by the strong electromagnet 7 penetrates the glass fiber reinforced plastic, so that the wax molecules in disordered thermal motion near the crystallization temperature obtain energy , adjusted the mutual magnetic collision orientation to make it unfavorable to condense, utilize the solid anti-wax agent in the medicine box 16 to carry out anti-wax simultaneously.
在辐射厚度传感器6识别微弱结蜡(结蜡厚度小于3mm)情况下，只开启强磁防蜡模块29，使第一强电磁铁7产生的磁场穿透第一玻璃钢穿透片11，避免蜡分子凝结，预防结蜡现象的产生。Under the situation that radiation thickness sensor 6 recognizes weak waxing (waxing thickness is less than 3mm), only open strong magnetic anti-wax module 29, make the magnetic field that the first strong electromagnet 7 produces penetrate the first FRP penetrating piece 11, avoid wax Molecular condensation prevents wax formation.
在辐射厚度传感器6识别有中等结蜡(结蜡厚度为3～6mm)的情况下，关闭强磁防蜡模块29，开启微波加热清蜡模块30，磁控管16产生的磁场穿透第二玻璃钢穿透片，对井下液体加热，油管1上的蜡垢因井下温度较高逐渐被清除，直到辐射厚度传感器6识别无结蜡情况时微波加热清蜡模块30停止工作。但是，如果微波加热清蜡模块30在工作过程中，温度传感器15识别油管1工作温度超过设定的温度20℃，微波加热清蜡模块30关闭，直到工作温度降低至设定温度以下时，微波加热清蜡模块30继续工作。When the radiation thickness sensor 6 recognizes that there is moderate wax deposition (wax deposition thickness is 3-6 mm), the strong magnetic anti-wax module 29 is turned off, the microwave heating wax removal module 30 is turned on, and the magnetic field generated by the magnetron 16 penetrates the second The glass fiber reinforced plastic penetrates the sheet to heat the downhole liquid, and the wax scale on the tubing 1 is gradually removed due to the high downhole temperature, until the radiation thickness sensor 6 recognizes that there is no wax deposition, and the microwave heating wax removal module 30 stops working. However, if the microwave heating wax removal module 30 is in operation and the temperature sensor 15 recognizes that the operating temperature of the oil pipe 1 exceeds the set temperature by 20°C, the microwave heating wax removal module 30 is closed until the operating temperature drops below the set temperature, and the microwave The heating wax removal module 30 continues to work.
在辐射厚度传感器6识别有严重结蜡(结蜡厚度大于6mm)的情况下，开启化学防清蜡模块31，电控阀门22打开，液体清蜡药品通过毛细管24由单向阀25进入药箱26中，再通过药箱26上的孔28流入油管1中，直到辐射厚度传感器6识别结蜡情况至微弱结蜡时化学防清蜡模块31停止工作。When the radiation thickness sensor 6 identifies severe wax deposition (wax deposition thickness greater than 6 mm), the chemical anti-wax removal module 31 is turned on, the electronically controlled valve 22 is opened, and the liquid wax removal medicine enters the medicine box through the capillary 24 and the one-way valve 25 26, and then flow into the oil pipe 1 through the hole 28 on the medicine box 26, until the radiation thickness sensor 6 recognizes the wax deposition and the chemical anti-wax removal module 31 stops working when the wax deposition is weak.
通过上述方式，本发明一种智能井下清防蜡装置，利用强磁防蜡延长清蜡周期；利用辐射厚度传感器6及温度传感器15对井下情况进行快速识别，利用磁控管16发射微波进行井下加热，和可控的毛细管24投药技术进行清蜡，密闭保护壳与油管1的连接处均设置有丝纹对上下两个油管1之间进行接箍，本发明具有识别井下结蜡厚度、降低结蜡周期和清蜡功能，清蜡效率高。Through the above method, an intelligent downhole wax removal and prevention device of the present invention uses strong magnetic wax prevention to prolong the wax removal period; uses the radiation thickness sensor 6 and the temperature sensor 15 to quickly identify the downhole situation, and uses the magnetron 16 to emit microwaves for downhole Heating, and controllable capillary tube 24 dosing technology to remove wax, the connection between the airtight protective shell and the oil pipe 1 is provided with silk thread to connect the upper and lower two oil pipes 1, the present invention has the ability to identify the thickness of the downhole wax deposition, reduce Waxing cycle and wax removal function, high efficiency of wax removal.
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