CN101666221A - Oil well geothermal self-energy wax-proofing device - Google Patents
Oil well geothermal self-energy wax-proofing device Download PDFInfo
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- CN101666221A CN101666221A CN200910180545A CN200910180545A CN101666221A CN 101666221 A CN101666221 A CN 101666221A CN 200910180545 A CN200910180545 A CN 200910180545A CN 200910180545 A CN200910180545 A CN 200910180545A CN 101666221 A CN101666221 A CN 101666221A
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Abstract
The invention relates a device for preventing the wax deposition of an oil well by utilizing the oil well geothermal self-energy. Super-conductor pipes are mounted in the peripheries of oil pipes, andthe diameter of each super-conductor pipe is larger than the diameter of each oil pipe and smaller than the diameter of an oil well sleeve. The oil pipes are connected through oil pipe interfaces, and a production valve and a sleeve valve are respectively arranged at the upper ends of the oil pipes and the sleeve. An automatic control system and a remote monitoring device are arranged at the above-ground part of the wax-proofing device; all the joints of the super-conductor pipes are mutually connected through connecting devices and pumped into the vacuum state for constituting a super-conducting heat transfer channel, and a super-conducting medium is arranged in the super-conducting heat transfer channel. The device utilizes the oil well geothermal technology and the vacuum super-conducting heat transfer technology for preventing the wax deposition of the oil well, thereby realizing good effects, safety, reliability and low cost, and saving funds and energy.
Description
Technical field
The present invention relates to a kind of equipment that prevents oil well paraffinication, especially a kind of oil well geothermal self-energy wax-proofing device that utilizes.
Background technology
In the oil well production process, along with formation temperature echelon from bottom to top reduces, lighter hydrocarbons are separated out gradually in the crude oil, and the temperature of tube inner wall is reduced to the temperature of wax deposition point, and the wax of separating out sticks on the tube inner wall, forms wax deposition, influences crude oil production.Therefore, the removing wax deposition is an important topic in the oil well management.For removing wax deposition, every year on average paid about 3～40,000 yuan by every mouthful of oil well, and each elephant is for removing wax deposition, and year costs in hundred million yuan.Traditional dewaxing method is the hot water well-flushing, and average every month wax removal once injects 40M at every turn in oil well
3Hot water, and kill-job three to four days influence crude oil production.Oil well is everyday in wax deposition, and the workman goes wax removal, reciprocation cycle month in and month out.
Summary of the invention
In order to solve the oil well paraffinication problem from the source, the saving fund and the energy, the inventor designs a kind of special equipment-oil well geothermal self-energy wax-proofing device that utilizes the underground heat wax control through analyzing and researching for many years and putting into practice.This equipment adopts superconducting heat transfer technology leading in the world, and with specific process structure, guiding oil well depths heat upwards is passed to the oil well paraffinication section.Because underground heat upwards transmits endlessly, makes the tube inner wall temperature surpass crude oil wax point temperature, wax is difficult to stick on the tube inner wall, has reached the purpose of wax control.
The present invention realizes its purpose by the following technical solutions: a kind of oil well geothermal self-energy wax-proofing device, be divided into underground and ground two parts, the under ground portion of this wax-proofing device is installed on the oil pumper of oil well, pumping unit of well is two-layer tubular structure, interior pipe is an oil pipe, outer tube is a sleeve pipe, around every Oil-saving pipe, install superconducting pipe, the superconducting pipe diameter greater than tubing diameter less than casing diameter, interconnect by linkage between each superconducting pipe and be evacuated, form the superconduction heat transfer path, be provided with vacuum liquid feeding valve in the top of superconduction heat transfer path, in the superconduction heat transfer path superconductive medium is housed; Overground part is equipped with automatic control system and long-distance monitorng device, and automatic control system is made up of a control cabinet, is provided with temperature controller, temperature sensing device and radio signal sensing device, electrodynamic instrument and circuit automatic closs system in the control cabinet; Long-distance monitorng device is made up of pcs signal control system and display system two parts, and automatic control system is connected with radio signal with long-distance monitorng device, and long-distance monitorng device is monitored automatic control system by radio signal.
Operating principle: oil well geothermal self-energy wax-proofing device of the present invention is installed in the oil well of ordinary production.The oil well that the degree of depth is darker, the oilbearing stratum temperature is higher, about 70～80 ℃, the heat that himself produces can satisfy the required heat of oil pipe wax control, by the heat-conducting medium in the superconduction heat transfer path heat is upwards caused the oil well paraffinication section, make wax deposition section tube inner wall temperature be higher than wax deposition point temperature, wax is difficult to stick on the tube inner wall, can reach the wax control purpose.
The oil well that has is more shallow or temperature is lower, and heat can not satisfy the wax control requirement in the oil reservoir, then need an electric heater unit be installed in the superconducting pipe of superconduction heat transfer path foot, and this electric heater unit is connected with automatic control system by cable.This electric heater unit can be heat-conducting medium electric power storage, the heating in the superconduction heat transfer path, does one for oil well wax control institute calorific requirement and replenishes, and makes wax deposition section tube inner wall temperature be higher than the temperature of wax deposition point, and wax is difficult to stick on the tube inner wall, reaches the wax control purpose.
For saving cost, also can adopt the mode that underground heat wax control and electric heating wax control are separate and work in coordination, the superconduction heat transfer path is separated into upper and lower section, described electric heater unit is installed in the bottom of superconduction heat transfer path epimere, the top oil pipe prevents wax deposition by the heat-conducting medium electrical heating; Superconduction heat transfer path hypomere is provided with the vacuum filling opening, the heat-conducting medium of packing into, and the oil well bottom utilizes geothermal self-energy wax-proofing.
Beneficial effect of the present invention is:
1. this equipment utilization oil well underground heat and superconducting heat transfer technology prevent oil well paraffinication, and every mouthful of oil well can be saved wax removal expense 3～40,000 yuan every year, and the annual wax removal expense of saving of each elephant is in hundred million yuan, and save a large amount of energy and labour.
2. not kill-job, not polluted reservoir.
3. device security is reliable.The superconducting pipe internal temperature is lower than 80 ℃, belongs to no laminated structure.
4. the scope of application is wide, is applicable to most oil wells.
5. instant effect.Installation testing finishes, and can produce wax control result the same day.
6. automaticity height.All intensification wax controls all adopt automatic control, need not manually-operated, can be in work area operating room remote monitoring.
7. durable in use.The used superconducting pipe of this equipment is all made with GB boiler seamless steel pipe, also can adopt glass reinforced plastic pipe or stainless steel tube to manufacture, and the heat-conducting medium of packing in the pipe never degenerates, the non-corrosive steel pipe.
8. maintenance cost is low.This equipment is installed in the oil well, after debugging finishes, does not move motionlessly, does not damage, and is corrosion-resistant, need make regular check on the maintenance except that robot control system(RCS), do not produce maintenance cost substantially.
Description of drawings
Below, structure of the present invention and use principle are described further by embodiments of the invention and accompanying drawing thereof.
Fig. 1 is the structural representation of first embodiment of the invention.
Fig. 2 is the structural representation of second embodiment of the invention.
Fig. 3 is the structural representation of third embodiment of the invention.
Among the figure: 1. crude exports, 2. oil pipe is 3. produced valve, 4. sleeve valve, 5. temperature signal line, the 6. cable and the signal of telecommunication, 7. automatic control system, 8. long-distance monitorng device, 9. superconducting pipe, 10. superconductive medium, 11. linkage, 12. tubing interfaces, 13. natural gases, 14. sleeve pipe, 15. electric heater units, 16. crude oil, 17. vacuum liquid feeding valve, 18. safety devices, 19. vacuum filling openings.
The specific embodiment
Oil well geothermal self-energy wax-proofing device of the present invention as shown in Figure 1 to Figure 3.
Wax-proofing device is divided into the above and following two parts of Horizon of Horizon, and overground part is provided with automatic control system 7 and long distance control system 8.
Embodiment 1: a joint superconducting pipe 9 is installed around the oil pipe 2 of oil pumper, and this superconducting pipe is that seamless steel pipe is made, and less than sleeve pipe 14 diameters, the length of superconducting pipe determines according to oil well depth the superconducting pipe diameter greater than oil pipe 2 diameters.Oil pipe 2 upper ends are crude exports 1, are equipped with on the oil pipe 2 to produce valve 3, and the upper end of sleeve pipe 14 is provided with sleeve valve 4.Be equiped with superconducting pipe 9 around the every oil pipe 2, interconnect by linkage 11 between each superconducting pipe, and the composition superconduction heat transfer path that is evacuated.Be provided with vacuum liquid feeding valve 17 in the top of superconduction heat transfer path, the superconductive medium 10 of packing in the superconduction heat transfer path.
In the present invention, oil pipe 2, superconducting pipe 9 and sleeve pipe 14 constitute three layers of sleeve structure, wherein between oil pipe 2 and the superconducting pipe 9 heat-conducting medium are housed, between the superconduction heat transfer path of being made up of many superconducting pipes and sleeve pipe, the bottom is a crude oil, and top is natural gas 13 (or air).
Architectural feature of the present invention and operating principle are:
In the oil well geothermal self-energy wax-proofing device of the present invention, each root oil pipe 2 and superconducting pipe 9 are formed an independently bilayer sleeve, and inciting somebody to action independently with linkage 11, bilayer sleeve becomes a passage by connecting in turn up and down.Add superconductive medium 10 in the passage, and the composition superconduction heat transfer path that is evacuated, being installed among the oil well casing 14, its installation site and length are foundation with the position and the length of oil well paraffinication section.At this moment, oil pipe 2, superconducting pipe 9 and sleeve pipe 14 constitute three layers of sleeve structure, wherein between oil pipe 2 and the superconducting pipe 9 heat-conducting medium 10 are housed, and between superconducting pipe 9 and the sleeve pipe 14, the bottom is a crude oil 16, and top is natural gas 13 (or air); Insert in the interior crude oil 16 of sleeve pipe the lower end of superconduction heat transfer path.
During work, the superconductive medium 10 in the superconducting pipe 9 absorbs heat from bottom crude oil 16, because of the superconductive medium vapourizing temperature is 45 ℃, the temperature of deep layer crude oil is higher, and about 70～80 ℃, therefore, superconductive medium 10 becomes gaseous state by liquid state, is full of whole piece superconduction heat transfer path from bottom to top.Because of after the superconductive medium gasification, no thermal resistance, heat transfer is exceedingly fast, and the surface temperature of oil pipe 2 is risen rapidly, and when the temperature of the temperature＞crude oil wax point of tube inner wall (wax deposition section), the wax of separating out in the crude oil then can not be bonded on the oil pipe, has reached the order ground of wax control.
Embodiment 2: the oil well that has is more shallow or temperature is lower, and heat can not satisfy the wax control requirement in the crude oil oil reservoir, then needs to take ancillary method, does one for wax control institute calorific requirement and replenishes.As shown in Figure 2, an electric heater unit 15 is installed in the superconductive medium 10 of superconduction heat transfer path foot, this electric heater unit is connected with ground automatic control system 7 by the cable and the signal of telecommunication 6; Be provided with vacuum liquid feeding valve 17 and safety device 18 in the top of superconduction heat transfer path.During work, utilize electric heater unit 15 electric power storages, heating, make wax deposition section tube inner wall temperature be higher than the temperature of wax deposition point, wax is difficult to stick on the tube inner wall, reaches the wax control purpose.
Embodiment 3: the oil well that has, and reservoir temperature is on the low side, utilizes underground heat can solve the wax deposition problem of middle and lower part, but the top wax deposition can not thoroughly solve by geothermal self-energy.For reduce the installation length of superconducting pipe 9 as far as possible, save cost, also can adopt the mode that underground heat wax control and electric heating wax control are separate and work in coordination.As shown in Figure 3, the superconduction heat transfer path is separated into upper and lower section, described electric heater unit 15 is installed in the bottom of superconduction heat transfer path epimere, and superconduction heat transfer path hypomere is provided with vacuum filling opening 19.Like this, formed in the top of oil well wax deposition section automatic electric power storage heater and superconduction heat transfer unit (HTU) have been installed separately, oil well middle part and bottom utilize underground heat and superconduction heat transfer unit (HTU), so, can form the form of oil well bottom, middle part usefulness underground heat wax control, two combinations of oil well top usefulness electrical heating wax control, reach the purpose of wax control.
Claims (4)
1, a kind of oil well geothermal self-energy wax-proofing device, be divided into underground and ground two parts, the under ground portion of this wax-proofing device is installed on the oil pumper of oil well, pumping unit of well is two-layer tubular structure, interior pipe is oil pipe (2), outer tube is sleeve pipe (14), it is characterized in that: around every Oil-saving pipe (2), install a joint superconducting pipe (9), the superconducting pipe diameter greater than tubing diameter less than casing diameter, interconnect by linkage (11) between each superconducting pipe and be evacuated, form the superconduction heat transfer path, be provided with vacuum liquid feeding valve (17) in the top of superconduction heat transfer path, superconductive medium (10) is housed in the superconduction heat transfer path; Overground part is equipped with automatic control system (7) and long-distance monitorng device (8), and automatic control system (7) is connected with radio signal with long-distance monitorng device (8).
2, oil well geothermal self-energy wax-proofing device according to claim 1, it is characterized in that: an electric heater unit (15) is installed in the superconducting pipe (9) of described superconduction heat transfer path foot, and this electric heater unit is connected with automatic control system (7) by the cable and the signal of telecommunication (6); The top of superconduction heat transfer path is provided with safety device (18).
3, oil well geothermal self-energy wax-proofing device according to claim 2, it is characterized in that: the superconduction heat transfer path is divided into upper and lower two sections, described electric heater unit (15) is installed in the bottom of superconduction heat transfer path epimere, and the top of superconduction heat transfer path hypomere is provided with vacuum filling opening (19).
4, according to claim 1,2 or 3 described oil well geothermal self-energy wax-proofing devices, it is characterized in that: described superconducting pipe (9) is made for glass reinforced plastic pipe, seamless steel pipe or stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910180545A CN101666221A (en) | 2009-10-20 | 2009-10-20 | Oil well geothermal self-energy wax-proofing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910180545A CN101666221A (en) | 2009-10-20 | 2009-10-20 | Oil well geothermal self-energy wax-proofing device |
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| CN101666221A true CN101666221A (en) | 2010-03-10 |
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| CN200910180545A Pending CN101666221A (en) | 2009-10-20 | 2009-10-20 | Oil well geothermal self-energy wax-proofing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161428A (en) * | 2013-03-27 | 2013-06-19 | 南京工业大学 | Method for improving oil temperature at outlet of oil well |
| CN106152861A (en) * | 2015-04-11 | 2016-11-23 | 黄斌 | A kind of high-temperature geothermal metallic object |
| CN106288898A (en) * | 2015-06-03 | 2017-01-04 | 黄斌 | A kind of ground Heat transmission superconduction capillary tube |
| CN110388184A (en) * | 2019-08-23 | 2019-10-29 | 张红卫 | A kind of continuous hollow stem extracting underground heat |
| CN112081568A (en) * | 2019-06-12 | 2020-12-15 | 中国石油化工股份有限公司 | Thermal recovery heavy oil combined huff-puff well selection decision method |
-
2009
- 2009-10-20 CN CN200910180545A patent/CN101666221A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161428A (en) * | 2013-03-27 | 2013-06-19 | 南京工业大学 | Method for improving oil temperature at outlet of oil well |
| CN103161428B (en) * | 2013-03-27 | 2015-12-02 | 南京工业大学 | Improve method and the structure of oil well of oil well exit oil temperature |
| CN106152861A (en) * | 2015-04-11 | 2016-11-23 | 黄斌 | A kind of high-temperature geothermal metallic object |
| CN106288898A (en) * | 2015-06-03 | 2017-01-04 | 黄斌 | A kind of ground Heat transmission superconduction capillary tube |
| CN112081568A (en) * | 2019-06-12 | 2020-12-15 | 中国石油化工股份有限公司 | Thermal recovery heavy oil combined huff-puff well selection decision method |
| CN112081568B (en) * | 2019-06-12 | 2022-12-02 | 中国石油化工股份有限公司 | Thermal recovery heavy oil combined huff-puff well selection decision method |
| CN110388184A (en) * | 2019-08-23 | 2019-10-29 | 张红卫 | A kind of continuous hollow stem extracting underground heat |
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Open date: 20100310 |