CN1391026A - Apparatus and method for removing wax from internal surface of sleeve pipe by high-pressure steam and compressed air - Google Patents
Apparatus and method for removing wax from internal surface of sleeve pipe by high-pressure steam and compressed air Download PDFInfo
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- CN1391026A CN1391026A CN 02132640 CN02132640A CN1391026A CN 1391026 A CN1391026 A CN 1391026A CN 02132640 CN02132640 CN 02132640 CN 02132640 A CN02132640 A CN 02132640A CN 1391026 A CN1391026 A CN 1391026A
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Abstract
An apparatus and method for removing the wax attached to inner surface of casing features that the two inlet ends of an inlet pipe are respectively joined to the high-pressure steam outlet pipe of boiler and the compressed air outlet pipe of air compressor, and its one outlet end is connected with the wax-scraping tube, so the high-pressure steam, compressed air and wax-scraping tube are combined for higher efficiency.
Description
Technical field: the present invention relates to the improvement that the oil field tubing string is removed the device of attached wax and removed attached wax method.
Background technology: the method for the attached wax of removing internal surface of sleeve pipe of widespread usage has hot-washing wax remover, sleeve pipe paraffin cutting, ground wax removal and chemical plugging removal etc. at present, but this several method all exists certain defective, only be applicable to the well that the sleeve pipe wax deposition is not serious as hot-washing wax remover, also need the oil jacket space; The ground wax removal then needs oil pipe and downhole tool are tripped out at the ground wax removal, and workload is big and effect is undesirable; The chemical plugging removal method is the cost height not only, and energy storage has pollution to oil reservoir, and the sleeve pipe and the borehole wall are all caused certain infringement, have very big danger again simultaneously, and above-mentioned several method can't be handled all to the serious well of wax deposition.Existingly in addition remove wax apparatus, so ubiquity the bad problem of wax removal effect because unreasonable structure and the supporting facility that not have to suit match with it.
Summary of the invention: the present invention is a kind of device and method that utilizes high steam and compressed air to remove the attached wax of internal surface of sleeve pipe of development, and this device can carry out paraffin removal to the serious well of wax deposition to be handled, and the sleeve pipe and the borehole wall are not had injury and pollution-free to oil reservoir.This method is simple, has low cost, high efficiency, wax removal good effectiveness.The device of the attached wax of removing internal surface of sleeve pipe of the present invention comprises paraffin cutting tubing string 1, oil return pipeline 2, well head controller 7, and it also comprises air inlet pipe 4, boiler car 5, pressure fan 6, inlet suction port 8, ball-and-seat 9; Right-hand member in air inlet pipe 4 is provided with air inlet pipe arm 4-1 and air inlet pipe arm 4-2, air inlet pipe arm 4-1 is connected with the high steam escape pipe 5-1 of boiler car 5, air inlet pipe arm 4-2 is connected with the compressed air escape pipe 6-1 of pressure fan 6, in air inlet pipe arm 4-1 He in the air inlet pipe arm 4-2, be provided with ball-and-seat 9, the left end of air inlet pipe 4 is connected with the right-hand member of inlet suction port 8, and the left end of inlet suction port 8 is connected with paraffin cutting tubing string 1.The method that the present invention utilizes high steam and compressed air to remove the attached wax of internal surface of sleeve pipe is: at first squeeze into 3.0～6.0MPa, 160～220 ℃ high steam gas by the high steam escape pipe 5-1 on the boiler car 5 in paraffin cutting tubing string 1, when pressure reached 4.0～6.0Mpa, boiler car suspended the supply high steam; Start pressure fan 6 then, the pressure-air that the compressed air that comes out in the compressed air escape pipe 6-1 of pressure fan 6 is squeezed into 3.0～12.0Mpa through air inlet pipe 4 acts on the paraffin cutting tubing string 1, and the gas ratio in oil return pipeline 2 reaches at 60%～80% o'clock to be stopped.Repeat the process of alternately suppressing of high steam and pressure-air, reach working design until paraffin cutting tubing string 1 depth of setting and require the degree of depth, finish till the whole well paraffin cutting.The present invention adopts high steam with compressed air and cooperate paraffin cutting tubing string 1 that sleeve pipe 3 is carried out wax removal.The present invention has that cost is low, speed of application is fast, and technological requirement is simple, and wax oil can directly reclaim, and environmentally safe, does not damage the characteristics of sleeve pipe, the borehole wall and oil reservoir.It can improve reservoir permeability, and the cycle of resuming production is fast, and safety factor is also than other dewaxing method height simultaneously.
Description of drawings: Fig. 1 is the structural representation of paraffin removal unit of the present invention.
The specific embodiment one: the device of the attached wax of removing internal surface of sleeve pipe of present embodiment is made up of paraffin cutting tubing string 1, oil return pipeline 2, sleeve pipe 3, air inlet pipe 4, boiler car 5, pressure fan 6, well head controller 7, inlet suction port 8, ball-and-seat 9; Right-hand member in air inlet pipe 4 is provided with air inlet pipe arm 4-1 and air inlet pipe arm 4-2, air inlet pipe arm 4-1 is connected with the high steam escape pipe 5-1 of boiler car 5, air inlet pipe arm 4-2 is connected with the compressed air escape pipe 6-1 of pressure fan 6, in air inlet pipe arm 4-1 He in the air inlet pipe arm 4-2, be provided with ball-and-seat 9, the left end of air inlet pipe 4 is connected with the right-hand member of inlet suction port 8, the left end of inlet suction port 8 is connected with paraffin cutting tubing string 1, paraffin cutting tubing string 1 is arranged in the sleeve pipe 3, is provided with oil return pipeline 2 in the upper left side of sleeve pipe 3, oil return pipeline 2 is arranged on the below of well head controller 7.
The specific embodiment two: the paraffin cutting tubing string 1 in the present embodiment is made up of oil pipe 1-1, paraffin scraper 1-2, ball-and-seat 1-3; The upper end of paraffin scraper 1-2 is fixed on the lower end of oil pipe 1-1, and the lower end of ball-and-seat 1-3 is connected with the upper end of paraffin scraper 1-2, and ball-and-seat 1-3 is arranged in the lower end of oil pipe 1-1.Other composition is identical with the specific embodiment one with annexation.
The specific embodiment three: the method that present embodiment utilizes high steam and compressed air to remove the attached wax of internal surface of sleeve pipe is: at first squeeze into 4.0～5.0MPa, 180～200 ℃ high steam gas by the high steam escape pipe 5-1 on the boiler car 5 in paraffin cutting tubing string 1, when pressure reached 5Mpa, boiler car suspended the supply high steam; Start pressure fan 6 then, the pressure-air that the compressed air that comes out in the compressed air escape pipe 6-1 of pressure fan 6 is squeezed into 4.0～10.0Mpa through air inlet pipe 4 acts on the paraffin cutting tubing string 1, and the gas ratio in oil return pipeline 2 reaches at 70% o'clock to be stopped.Repeat the process of alternately suppressing of high steam and pressure-air, reach working design until paraffin cutting tubing string 1 depth of setting and require the degree of depth, finish till the whole well paraffin cutting.Owing to the one-way of ball-and-seat 9, can stop the gentle body refluence of the phase mutual interference phenomenon of two strands of air-flows effectively.
Operating principle: paraffin cutting tubing string 1 G.I.H that will form by oil pipe 1-1 and paraffin scraper 1-2 at first, again the upper end of inlet suction port 8 with oil pipe 1-1 connected, in paraffin cutting tubing string 1, squeeze into 3.0～6.0MPa by the high steam gas outlet 5-1 on the boiler car 5 then, 160～220 ℃ high steam, when pressure reaches 4.0～6.0Mpa, suspend the supply high steam, and startup pressure fan 6, in paraffin cutting tubing string 1, squeeze into the pressure-air of 3.0～12Mpa, gas ratio in oil return pipeline 2 reaches at 60～80% o'clock to be stopped, repeat the process of alternately suppressing of high steam and pressure-air, paraffin cutting tubing string 1 is along with the air-flow of high steam and pressure-air moves down, the degree of depth that is lowered to until paraffin cutting tubing string 1 reaches the working design technological requirement, and the attached wax of internal surface of sleeve pipe is wiped off.
Claims (3)
1, utilize high steam and compressed air to remove the device of the attached wax of internal surface of sleeve pipe, it comprises paraffin cutting tubing string (1), oil return pipeline (2), well head controller (7), it is characterized in that it also comprises air inlet pipe (4), boiler car (5), pressure fan (6), inlet suction port (8), ball-and-seat (9); Right-hand member in air inlet pipe (4) is provided with air inlet pipe arm (4-1) and air inlet pipe arm (4-2), air inlet pipe arm (4-1) is connected with the high steam escape pipe (5-1) of boiler car (5), air inlet pipe arm (4-2) is connected with the compressed air escape pipe (6-1) of pressure fan (6), in air inlet pipe arm (4-1) He in the air inlet pipe arm (4-2), be provided with ball-and-seat (9), the left end of air inlet pipe (4) is connected with inlet suction port (8) right-hand member, and the left end of inlet suction port (8) is connected with paraffin cutting tubing string (1).
2, the device that utilizes high steam and compressed air to remove the attached wax of internal surface of sleeve pipe according to claim 1 is characterized in that paraffin cutting tubing string (1) is made up of oil pipe (1-1), paraffin scraper (1-2), ball-and-seat (1-3); The upper end of paraffin scraper (1-2) is fixed on the lower end of oil pipe (1-1), and the lower end of ball-and-seat (1-3) is connected with the upper end of paraffin scraper (1-2), and ball-and-seat (1-3) is arranged in the lower end of oil pipe (1-1).
3, utilize high steam and compressed air to remove the method for the attached wax of internal surface of sleeve pipe, it is characterized in that at first in paraffin cutting tubing string (1), squeezing into 3.0～6.0MPa, 160～220 ℃ high steam gas by the high steam escape pipe (5-1) on the boiler car (5), when pressure reached 4.0～6.0Mpa, boiler car suspended the supply high steam; Start pressure fan (6) then, the pressure-air that the compressed air that comes out in the compressed air escape pipe (6-1) of pressure fan (6) is squeezed into 3.0～12.0Mpa through air inlet pipe (4) acts on the paraffin cutting tubing string (1), gas ratio in oil return pipeline (2) reaches at 60%～80% o'clock to be stopped, repeat the process of alternately suppressing of high steam and pressure-air, reach working design until paraffin cutting tubing string (1) depth of setting and require the degree of depth, finish till the whole well paraffin cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021326401A CN1170051C (en) | 2002-07-18 | 2002-07-18 | Apparatus and method for removing wax from internal surface of sleeve pipe by high-pressure steam and compressed air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021326401A CN1170051C (en) | 2002-07-18 | 2002-07-18 | Apparatus and method for removing wax from internal surface of sleeve pipe by high-pressure steam and compressed air |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1391026A true CN1391026A (en) | 2003-01-15 |
| CN1170051C CN1170051C (en) | 2004-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021326401A Expired - Fee Related CN1170051C (en) | 2002-07-18 | 2002-07-18 | Apparatus and method for removing wax from internal surface of sleeve pipe by high-pressure steam and compressed air |
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| CN (1) | CN1170051C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430535A (en) * | 2011-11-04 | 2012-05-02 | 西安航空动力股份有限公司 | Surface treatment protective wax removing cabinet |
| CN101858205B (en) * | 2009-04-09 | 2013-01-16 | 侯宇 | Device for removing paraffin and washing well by gas heat carrier |
| CN101649729B (en) * | 2008-08-15 | 2013-10-16 | 北京名辉宝狮油田设备有限公司 | Oil pipe connector and heat washing and paraffin removing system |
| CN104727780A (en) * | 2015-02-04 | 2015-06-24 | 南京荣震达机械配件有限公司 | Onsite oil tube spraying device |
| CN110080722A (en) * | 2019-04-28 | 2019-08-02 | 西南石油大学 | A kind of pit shaft dynamic wax deposition wax control teaching experiment simulator |
-
2002
- 2002-07-18 CN CNB021326401A patent/CN1170051C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649729B (en) * | 2008-08-15 | 2013-10-16 | 北京名辉宝狮油田设备有限公司 | Oil pipe connector and heat washing and paraffin removing system |
| CN101858205B (en) * | 2009-04-09 | 2013-01-16 | 侯宇 | Device for removing paraffin and washing well by gas heat carrier |
| CN102430535A (en) * | 2011-11-04 | 2012-05-02 | 西安航空动力股份有限公司 | Surface treatment protective wax removing cabinet |
| CN102430535B (en) * | 2011-11-04 | 2013-08-14 | 西安航空动力股份有限公司 | Surface treatment protective wax removing cabinet |
| CN104727780A (en) * | 2015-02-04 | 2015-06-24 | 南京荣震达机械配件有限公司 | Onsite oil tube spraying device |
| CN110080722A (en) * | 2019-04-28 | 2019-08-02 | 西南石油大学 | A kind of pit shaft dynamic wax deposition wax control teaching experiment simulator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1170051C (en) | 2004-10-06 |
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Granted publication date: 20041006 Termination date: 20100718 |