CN103195393B - With the anti-pollution thermal washing paraffin removal unit of injection passage - Google Patents
With the anti-pollution thermal washing paraffin removal unit of injection passage Download PDFInfo
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- CN103195393B CN103195393B CN201310129078.9A CN201310129078A CN103195393B CN 103195393 B CN103195393 B CN 103195393B CN 201310129078 A CN201310129078 A CN 201310129078A CN 103195393 B CN103195393 B CN 103195393B
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- plug
- central tube
- injection passage
- guide pipe
- push rod
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Abstract
The invention discloses a kind of anti-pollution thermal washing paraffin removal unit with injection passage, it is mainly by central tube, eccentric body, stage clip, upper plug, lower plug, guide pipe, push rod, taper plug composition, eccentric body is located at a side of central tube, in eccentric body, be provided with the cavity communicating with its upper and lower two ends, the tube wall of central tube is provided with duct, upper plug and lower plug are located at the upper and lower port place of cavity, lower plug is provided with bellmouth, the upper end of guide pipe is fixedly connected with upper plug, the upper end of push rod is inserted in guide pipe, lower end is provided with described taper plug, this taper plug seals described bellmouth under the effect of pressing bullet, on the sidewall of described central tube, establish the injection passage communicating with it, described injection passage is provided with check valve. injection passage is located at the position between central tube and eccentric body. after heat washes into, in oil pipe, inject wax control medicament by check valve and medicine-pouring hole by injection pipeline, extend the wax period of oil well, reduce well-flushing number of times, cost-saving.
Description
Technical field
The present invention relates to the downhole tool of hot-washing wax remover in oil exploitation, particularly a kind of anti-pollution thermal washing paraffin removal unit.
Background technology
In oil exploitation process, oil well paraffinication has a strong impact on the normal production of oil well, even makes oil well stop production, and needs regularly to remove the wax depositing on tube wall, ensures the normal production of oil well. Hot-washing wax remover is a kind of wax removal technology being most widely used, and can thoroughly remove the paraffin depositing on tube wall. Offshore oilfield major part is electric pump well, only can carry out wax removal operation by oil jacket annular space cycling hot wash body, the hot wash body of this method by well head through packer vent valve to electric submersible pump suction inlet, by electric submersible pump, hot wash body is discharged from oil pipe together with well liquid, can thoroughly remove the paraffin depositing on tube wall, but it is low to exist heat to wash efficiency, flushing fluid consumption is large, energy consumption is high, the long production time efficiency that affects of duration of well flushing, flushing fluid is invaded reservoir and is easily caused the shortcomings such as reservoir damage, especially can not meet even filling chemical agent and carry out the demand of wax control.
Summary of the invention
The present invention seeks to overcome deficiency of the prior art, provide a kind of and can realize the anti-pollution thermal washing paraffin removal unit with injection passage that short-circuit cycle heat is washed, thereby realized the demand that can meet even filling chemical agent and carry out wax control.
The present invention addresses the above problem taked technical scheme:
With the anti-pollution thermal washing paraffin removal unit of injection passage, it is mainly by central tube, eccentric body, stage clip, upper plug, lower plug, guide pipe, push rod, taper plug composition, the two ends up and down of described central tube are connected with upper and lower oil pipe, eccentric body is located at a side of central tube, in eccentric body, be provided with the cavity communicating with its upper and lower two ends, the tube wall of described central tube is provided with the duct that central tube is connected with described cavity, upper plug and lower plug are located at the upper and lower port place of cavity, described lower plug is provided with bellmouth, guide pipe is located in cavity, its upper end is fixedly connected with upper plug, the upper end of described push rod is inserted in guide pipe, lower end is provided with described taper plug, this taper plug seals described bellmouth under the effect of pressing bullet, on the sidewall of described central tube, establish the injection passage communicating with it, described injection passage is provided with check valve.
The both sides of described guide pipe have symmetrically in the strip-shaped clamp groove of axis, in described strip-shaped clamp groove, be provided with the spacing bayonet lock that can move freely along draw-in groove, compression spring sleeve is contained in the periphery of guide pipe, its top, two ends is pressed between spacing bayonet lock and upper plug, and the upper end of push rod is fixedly connected with the bottom surface of spacing bayonet lock.
The upper end of described push rod is threaded with the bottom surface of spacing bayonet lock.
The both sides of described spacing bayonet lock are provided with that the card of cylindrical body is stupefied, and the stupefied top of described card has pressure spring slot, and one end of described stage clip is stuck in pressure spring slot.
The portion of bottom center of described upper plug is provided with screw, and the upper end of described guide pipe is threaded with described screw.
The internal diameter size of described central tube is identical with the internal diameter size of the oil pipe at its two ends.
Described taper plug is connected with the end thread of push rod.
Described taper plug is made up of the interior body of casting and the sealant that is located at interior body of casting surface.
Described sealant is oil resistant elastic caoutchouc.
Beneficial effect of the present invention: hot-washing paraffin-remover is arranged on below wax deposition point, by electric submersible pump packer down to the anti-pollution thermal washing paraffin removal unit below with injection passage, when hot-washing wax remover, close vent valve, annular space injects hot water, annular pressure reaches after certain value, compressing taper plug makes to move on it, thereby opens circulation canal, realizes short-circuit cycle; After heat washes into, due to the effect of self gravitation and stage clip, plug moves down the sealing that realizes passage. Heat is washed in process, the shortening of washing loop because of heat, thereby effectively raise heat and wash efficiency, reduce flushing fluid consumption, reduce energy consumption, saved duration of well flushing simultaneously, due to being used in conjunction with of the present invention and packer, electric submersible pump ball-and-seat and Y pipe plug, hot wash body can not flow to reservoir position, has realized heat and has washed the reservoir protection in process; After heat washes into, in oil pipe, inject wax control medicament by check valve and medicine-pouring hole by injection pipeline, extend the wax period of oil well, reduce well-flushing number of times, cost-saving.
Brief description of the drawings
Fig. 1 is vertical profile TV structure schematic diagram of the present invention;
Fig. 2 is cross-sectional TV structure schematic diagram of the present invention;
Fig. 3 is the structural representation of guide pipe shown in Fig. 1;
Fig. 4 is the top view of spacing bayonet lock shown in Fig. 1;
Fig. 5 is the cutaway view along A-A line shown in Fig. 4;
Fig. 6 is the vertical profile TV structure schematic diagram of the plug of taper shown in Fig. 1;
Fig. 7 is the structural representation of concrete Application Example of the present invention.
In figure: 1, top connection; 2, central tube; 3, upper plug; 4, guide pipe; 5, duct; 6, stage clip; 7, eccentric body; 8, spacing bayonet lock; 9, cavity; 10, push rod; 11, taper plug; 12, lower plug; 13, lower contact; 14, nipple; 15, draw-in groove; 16, block stupefied; 17, pressure spring slot; 18, screwed hole; 19, screw; 20, the interior body of casting; 21, sealant; 22, injection passage; 23, check valve.
Detailed description of the invention
As shown in Fig. 1,2,3,4,5, with the anti-pollution thermal washing paraffin removal unit of injection passage, formed by top connection 1, central tube 2, upper plug 3, guide pipe 4, duct 5, stage clip 6, eccentric body 7, spacing bayonet lock 8, cavity 9, push rod 10, taper plug 11, lower plug 12 and lower contact 13. the top connection 1 of central tube 2 with lower contact 13 for being connected upper and lower oil pipe, central tube 2 internal diameters are identical with pipe aperture, central tube 2 one sides are provided with eccentric body 7, in the middle of eccentric body 7, there is the cavity 9 being communicated with up and down, between cavity and central tube, there is duct 5 to be communicated with, cavity upper end is sealed by upper plug 3, the nipple 14 of guide pipe 4 upper ends is located in the screw of plug center, there is symmetrical draw-in groove 15 guide pipe both sides, spacing bayonet lock 8 can move freely in draw-in groove, stage clip 6 is sleeved on the periphery of guide pipe 4, its top, two ends is pressed between spacing bayonet lock 8 and upper plug 3, the upper end of push rod 10 is connected with the screwed hole 18 of the bottom surface of spacing bayonet lock, lower end connects with the screw 19 that is connected taper plug 11, on lower plug 12, there is the bellmouth matching with taper plug, the common sealing that realizes lower plug of bellmouth and taper plug. when hot-washing wax remover, the annular injection between sleeve pipe and oil pipe enters fluid, moves, thereby set up the passage of oil pipe and annular space on compressing taper plug and stage clip, has realized short-circuit cycle, heat washes and finishes because plug is pushed back bellmouth by the effect of self gravitation and stage clip, the sealing while realizing normal production, on the sidewall of described central tube 2, establish the injection passage 22 communicating with it, described injection passage 22 is provided with check valve 23, and described injection passage 22 is located at the position between central tube 2 and eccentric body 7.
The both sides of described spacing bayonet lock 8 are provided with that the card of cylindrical body is stupefied 16, and the top of described card stupefied 16 has pressure spring slot 17, and one end of described stage clip 6 is stuck in pressure spring slot 17.
As shown in Figure 6, described taper plug 11 is made up of the interior body of casting 20 and the sealant 21 that is located at the interior body of casting 20 surfaces, the high elastic rubber that described sealant 21 is oil resistant, and the screw 19 on aforesaid taper plug is positioned on the body of casting 20.
Application of the present invention: as shown in Figure 7, in figure, structure comprises tubing hanger 14-1, oil pipe 14-2, sleeve pipe 14-3, storm valve 14-4, anti-pollution thermal washing paraffin removal unit 14-5, vent valve 14-6, packer 14-7, Y type instrument 14-8, seating nipple 14-9 and electric submersible pump 14-10 with injection passage. be arranged on wax deposition point with upper/lower positions with the anti-pollution thermal washing paraffin removal unit of injection passage, packer is below this device, when washing, heat closes vent valve by liquid controling pipe line, inject hot wash body by oil jacket annular space, when oil jacket annular space internal pressure exceed set with the anti-pollution thermal washing paraffin removal unit of injection passage open pressure time, wherein on taper plug and stage clip, move, hot wash body is by entering oil pipe in the anti-pollution thermal washing paraffin removal unit with injection passage, thereby realize heat and washed the short-circuit cycle in process, effectively raise heat and wash efficiency, reduce flushing fluid consumption, reduce energy consumption, save duration of well flushing, in washing well process because having closed vent valve, and due to the effect of ball-and-seat in seating nipple and electric submersible pump, hot wash body can not flow to packer with upper/lower positions, thereby effectively avoid the pollution of flushing fluid to reservoir. after well-flushing completes, due to the effect of gravity and pressure spring force, move down with taper plug in the anti-pollution thermal washing paraffin removal unit of injection passage, make heat wash channel enclosed, do not affect the normal production of oil well.
Claims (1)
1. the anti-pollution thermal washing paraffin removal unit with injection passage, it is characterized in that: it is mainly by central tube, eccentric body, stage clip, upper plug, lower plug, guide pipe, push rod, taper plug composition, the two ends up and down of described central tube are connected with upper and lower oil pipe, eccentric body is located at a side of central tube, in eccentric body, be provided with the cavity communicating with its upper and lower two ends, the tube wall of described central tube is provided with the duct that central tube is connected with described cavity, upper plug and lower plug are located at the upper and lower port place of cavity, described lower plug is provided with bellmouth, guide pipe is located in cavity, its upper end is fixedly connected with upper plug, the upper end of described push rod is inserted in guide pipe, lower end is provided with described taper plug, this taper plug seals described bellmouth under the effect of pressing bullet, the sidewall of described central tube is provided with the injection passage communicating with it, and described injection passage is provided with check valve, the both sides of described guide pipe have symmetrically in the strip-shaped clamp groove of axis, in described strip-shaped clamp groove, be provided with the spacing bayonet lock moving freely along strip-shaped clamp groove, compression spring sleeve is contained in the periphery of guide pipe, its top, two ends is pressed between spacing bayonet lock and upper plug, and the upper end of push rod is fixedly connected with the bottom surface of spacing bayonet lock, the upper end of described push rod is threaded with the bottom surface of spacing bayonet lock, the both sides of described spacing bayonet lock are provided with that the card of cylindrical body is stupefied, and the stupefied top of described card has pressure spring slot, and one end of described stage clip is stuck in pressure spring slot, the portion of bottom center of described upper plug is provided with screw, and the upper end of described guide pipe is threaded with described screw, the internal diameter size of described central tube is identical with the internal diameter size of the oil pipe at its two ends, described taper plug is connected with the end thread of push rod, described taper plug is made up of the interior body of casting and the sealant that is located at interior body of casting surface, described sealant is oil resistant elastic caoutchouc, described injection passage is located at the position between central tube and eccentric body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129078.9A CN103195393B (en) | 2013-04-15 | 2013-04-15 | With the anti-pollution thermal washing paraffin removal unit of injection passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129078.9A CN103195393B (en) | 2013-04-15 | 2013-04-15 | With the anti-pollution thermal washing paraffin removal unit of injection passage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103195393A CN103195393A (en) | 2013-07-10 |
| CN103195393B true CN103195393B (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310129078.9A Expired - Fee Related CN103195393B (en) | 2013-04-15 | 2013-04-15 | With the anti-pollution thermal washing paraffin removal unit of injection passage |
Country Status (1)
| Country | Link |
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| CN (1) | CN103195393B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552669A (en) * | 2018-05-31 | 2019-12-10 | 中国石油天然气股份有限公司 | Differential pressure injection tool |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR102019019059A2 (en) * | 2019-09-13 | 2021-03-30 | Petróleo Brasileiro S.A. - Petrobras | METHOD FOR SUBMARINE MANIFOLDS INCLUDING REMOVAL |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4011906A (en) * | 1975-10-31 | 1977-03-15 | Alexander Harvey C | Downhole valve for paraffin control |
| US4224993A (en) * | 1979-09-13 | 1980-09-30 | Leonard Huckaby | Dewaxing valve for use in oil wells |
| CN2213228Y (en) * | 1994-11-30 | 1995-11-22 | 北京市路达能源技术开发公司 | Through plug stick well-flushing valve |
| CN201068783Y (en) * | 2007-07-27 | 2008-06-04 | 涂中群 | Thermal washing wax-clearing anti-pollution apparatus |
| CN101205803A (en) * | 2006-12-20 | 2008-06-25 | 沈阳华威石油机械制造有限公司 | Well washing apparatus |
| CN201198750Y (en) * | 2008-05-09 | 2009-02-25 | 中国石油新疆油田分公司采油工艺研究院 | Anti-high pressure reverse circulation valve |
| CN202381044U (en) * | 2011-12-13 | 2012-08-15 | 中国海洋石油总公司 | Downhole injection device of oil-gas field |
| CN202597803U (en) * | 2012-04-24 | 2012-12-12 | 福建海洋铜业有限公司 | Self-sealing check valve |
| CN202810787U (en) * | 2012-10-23 | 2013-03-20 | 杨世豪 | Multifunctional hot washing valve |
-
2013
- 2013-04-15 CN CN201310129078.9A patent/CN103195393B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4011906A (en) * | 1975-10-31 | 1977-03-15 | Alexander Harvey C | Downhole valve for paraffin control |
| US4224993A (en) * | 1979-09-13 | 1980-09-30 | Leonard Huckaby | Dewaxing valve for use in oil wells |
| CN2213228Y (en) * | 1994-11-30 | 1995-11-22 | 北京市路达能源技术开发公司 | Through plug stick well-flushing valve |
| CN101205803A (en) * | 2006-12-20 | 2008-06-25 | 沈阳华威石油机械制造有限公司 | Well washing apparatus |
| CN201068783Y (en) * | 2007-07-27 | 2008-06-04 | 涂中群 | Thermal washing wax-clearing anti-pollution apparatus |
| CN201198750Y (en) * | 2008-05-09 | 2009-02-25 | 中国石油新疆油田分公司采油工艺研究院 | Anti-high pressure reverse circulation valve |
| CN202381044U (en) * | 2011-12-13 | 2012-08-15 | 中国海洋石油总公司 | Downhole injection device of oil-gas field |
| CN202597803U (en) * | 2012-04-24 | 2012-12-12 | 福建海洋铜业有限公司 | Self-sealing check valve |
| CN202810787U (en) * | 2012-10-23 | 2013-03-20 | 杨世豪 | Multifunctional hot washing valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552669A (en) * | 2018-05-31 | 2019-12-10 | 中国石油天然气股份有限公司 | Differential pressure injection tool |
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| Publication number | Publication date |
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| CN103195393A (en) | 2013-07-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: CNOOC (China) Limited Zhanjiang Branch Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 China oil tower, 25 Chaoyangmen North Street, Dongcheng District, Beijing Co-patentee before: CNOOC (China) Limited Zhanjiang Branch Patentee before: China National Offshore Oil Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20200415 |