CN203223208U - Anti-pollution hot wash paraffin removal device - Google Patents
Anti-pollution hot wash paraffin removal device Download PDFInfo
- Publication number
- CN203223208U CN203223208U CN 201320187166 CN201320187166U CN203223208U CN 203223208 U CN203223208 U CN 203223208U CN 201320187166 CN201320187166 CN 201320187166 CN 201320187166 U CN201320187166 U CN 201320187166U CN 203223208 U CN203223208 U CN 203223208U
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- guide pipe
- pipe
- cavity
- push rod
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Abstract
The utility model discloses an anti-pollution hot wash paraffin removal device which is mainly composed of a center pipe, an eccentric body, a compressed spring, an upper screwed plug, a lower screwed plug, a guide pipe, a push rod and a cone-shaped plug. The upper end and the lower end of the center pipe are connected with an upper oil pipe and a lower oil pipe, the eccentric body is arranged on one side of the center pipe, a cavity is formed in the eccentric body and communicated with the upper end and the lower end of the eccentric body, a drill way is formed in the pipe wall of the center pipe, and the center pipe is connected with the cavity through the drill way. The upper screwed plug and the lower screwed plug are arranged on the upper port and the lower port of the cavity, a cone-shaped hole is formed in the lower screwed plug, the guide pipe is arranged in the cavity, and the upper end of the guide pipe is fixedly connected with the upper screwed plug. The upper end of the push rod is inserted into the guide pipe, the lower end of the push rod is provided with the cone-shaped plug, and the cone-shaped plug seals the cone-shaped hole under the action of the compressed spring. The device is connected to the position below a paraffin precipitation point, achieves short-circuit hot wash circulating paraffin removal, improves hot wash efficiency, reduces using amount of well flushing fluid and energy consumption, saves well flushing time and meanwhile effectively avoids pollution to a reservoir stratum by the well flushing fluid.
Description
Technical field
The utility model relates to the downhole tool of hot-washing wax remover in the oil exploitation, particularly a kind of anti-pollution hot-washing wax remover device.
Background technology
In the oil exploitation process, oil well paraffinication has a strong impact on the ordinary production of oil well, even oil well is stopped production, and needs regularly to remove the wax that deposits on the tube wall, guarantees the ordinary production of oil well.Hot-washing wax remover is a kind of wax removal technology that is most widely used, and can thoroughly remove the paraffin that deposits on the tube wall.The offshore oilfield major part is electric pump well, only can carry out the wax removal operation by oil jacket annular space cycling hot wash body, the hot wash body of this method by well head through the packer vent valve to the electric submersible pump intake, by electric submersible pump hot wash body is discharged from oil pipe together with well liquid, can thoroughly remove the paraffin that deposits on the tube wall, but it is low to exist heat to wash efficient, the flushing fluid consumption is big, the energy consumption height, rate when the long influence of duration of well flushing is produced, flushing fluid is invaded reservoir and is easily caused shortcomings such as reservoir damage.
Efficient is low, the flushing fluid consumption is big, energy consumption is high, duration of well flushing is long, flushing fluid is invaded reservoir and caused problems such as reservoir damage for the heat that solves electric immersible pump well hot-washing wax remover operation existence is washed, the needs exploitation is a kind of can be directly installed on below the wax deposition point, can form the device of short-circuit cycle during hot-washing wax remover, wash efficient, reduce the flushing fluid consumption, cut down the consumption of energy, reduce duration of well flushing, effectively avoid flushing fluid to invade reservoir formation reservoir damage thereby effectively improve heat.
Summary of the invention
The utility model purpose is to overcome deficiency of the prior art, a kind of anti-pollution hot-washing wax remover device that can realize that short-circuit cycle heat is washed is provided, washes efficient, reduce the flushing fluid consumption, cut down the consumption of energy, reduce duration of well flushing, effectively avoid the purpose of reservoir damage thereby realized improving heat.
The utility model addresses the above problem the technical scheme of taking:
Anti-pollution hot-washing wax remover device, it is mainly by central tube, eccentric body, stage clip, last plug, following plug, guide pipe, push rod, the taper plug is formed, the two ends up and down of described central tube are connected with oil pipe up and down, eccentric body is located at a side of central tube, be provided with in the eccentric body and its cavity of communicating of two ends up and down, the tube wall of described central tube is provided with the duct that central tube is connected with described cavity, last plug and following plug are located at the upper and lower port place of cavity, described plug down is provided with bellmouth, guide pipe is located in the cavity, fixedly connected with last plug in its upper end, the upper end of described push rod is inserted in the guide pipe, the lower end is provided with described taper plug, and this taper plug seals described bellmouth under the effect of pressing bullet.
The both sides of described guide pipe have symmetrically in the strip-shaped clamp groove of axis, be provided with the spacing bayonet lock that can move freely along draw-in groove in the described strip-shaped clamp groove, compression spring sleeve is contained in the periphery of guide pipe, its two ends roof pressure is between spacing bayonet lock and last plug, fixedlys connected with the bottom surface of spacing bayonet lock in the upper end of push rod.
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 an end of described stage clip is stuck in the pressure spring slot.
Described portion of bottom center of going up 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.
The sealant on described taper plug body of casting surface by the interior body of casting and in being located at is formed.
Described sealant is the oil resistant elastic caoutchouc.
The utility model beneficial effect: the hot-washing wax remover device is installed in below the wax deposition point, with the electric submersible pump packer down to anti-pollution hot-washing wax remover device below, close vent valve during hot-washing wax remover, annular space injects hot water, after annular pressure reaches certain value, compressing taper plug makes on it and moves, thereby opens circulation canal, realizes short-circuit cycle; After heat washed into, because the effect of self gravitation and stage clip, plug moved down the sealing that realizes passage.Heat is washed in the process; wash the shortening in loop because of heat; thereby effectively raise heat and wash efficient; reduced the flushing fluid consumption; reduced energy consumption, saved duration of well flushing simultaneously, owing to being used of the utility model and packer, electric submersible pump ball-and-seat and Y pipe plug; hot wash body can not flow to the reservoir position, has realized the hot reservoir protection of washing in the process.
Description of drawings
Fig. 1 is vertical profile TV structure schematic diagram of the present utility model;
Fig. 2 is cross-sectional TV structure schematic diagram of the present utility model;
Fig. 3 is the structural representation of guide pipe shown in Figure 1;
Fig. 4 is the vertical view of spacing bayonet lock shown in Figure 1;
Fig. 5 is the sectional view along A-A line shown in Figure 4;
Fig. 6 is the vertical profile TV structure schematic diagram of taper plug shown in Figure 1;
Fig. 7 is the structural representation of concrete Application Example of the present utility model.
Among the figure: 1, top connection; 2, central tube; 3, go up 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, following plug; 13, lower contact; 14, nipple; 15, draw-in groove; 16, card is stupefied; 17, pressure spring slot; 18, screwed hole; 19, screw; 20, the interior body of casting; 21, sealant.
The specific embodiment
Shown in Fig. 1,2,3,4,5, a kind of anti-pollution hot-washing wax remover device is made up of top connection 1, central tube 2, last 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, following plug 12 and lower contact 13.The top connection 1 of central tube 2 is used for being connected oil pipe up and down with lower contact 13, central tube 2 internal diameters are identical with pipe aperture, central tube 2 one sides are provided with eccentric body 7, the cavity 9 that is communicated with is up and down arranged in the middle of the eccentric body 7, there is duct 5 to be communicated with between cavity and the central tube, the cavity upper end is by last plug 3 sealings, the nipple 14 of guide pipe 4 upper ends is located in the screw of plug center, there is symmetrical draw-in groove 15 the 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 two ends roof pressure is between spacing bayonet lock 8 and last plug 3, and the upper end of push rod 10 is connected with the screwed hole 18 of the bottom surface of spacing bayonet lock, and the lower end connects with the screw 19 that is connected taper plug 11, on the following plug 12 bellmouth that matches with the taper plug is arranged, the common realization of bellmouth and the taper plug sealing of plug down.During hot-washing wax remover, the annular injection between sleeve pipe and oil pipe is gone into fluid, moves on compressing taper plug and the stage clip, thereby has set up the passage of oil pipe and annular space, has realized short-circuit cycle; Heat washes and finishes because the effect of self gravitation and stage clip pushes back bellmouth with plug the sealing when realizing ordinary production.
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 an end of described stage clip 6 is stuck in the pressure spring slot 17.
As shown in Figure 6, the sealant 21 on described taper plug 11 body of casting 20 surfaces by the interior body of casting 20 and in being located at is formed, and described sealant 21 is the high elastic rubber of oil resistant, and the screw 19 on the aforesaid taper plug is positioned on the body of casting 20.
Application of the present utility model: as shown in Figure 7, structure comprises tubing hanger 14-1, oil pipe 14-2, sleeve pipe 14-3, storm valve 14-4, anti-pollution hot-washing wax remover device 14-5, vent valve 14-6, packer 14-7, Y type instrument 14-8, seating nipple 14-9 and electric submersible pump 14-10 among the figure.Anti-pollution hot-washing wax remover device is installed in the wax deposition point with upper/lower positions, below packer installs down to this, when washing, heat closes vent valve by liquid controling pipe line, inject hot wash body by the oil jacket annular space, when oil jacket annular space internal pressure surpass that anti-pollution hot-washing wax remover device sets open pressure the time, wherein move on taper plug and the stage clip, hot wash body is by entering oil pipe in the anti-pollution hot-washing wax remover device, thereby realized hot short-circuit cycle of washing in the process, effectively raise heat and wash efficient, reduce the flushing fluid consumption, reduced energy consumption, saved duration of well flushing, in the washing well process because having closed vent valve, and because the effect of ball-and-seat in seating nipple and the electric submersible pump, hot wash body can not flow to packer with upper/lower positions, thereby has effectively avoided the pollution of flushing fluid to reservoir.After well-flushing was finished, because the effect of gravity and stage clip power, the taper plug moved down in the anti-pollution hot-washing wax remover device, made heat wash the passage sealing, did not influence the ordinary production of oil well.
Claims (9)
1. anti-pollution hot-washing wax remover device, it is characterized in that: it is mainly by central tube, eccentric body, stage clip, last plug, following plug, guide pipe, push rod, the taper plug is formed, the two ends up and down of described central tube are connected with oil pipe up and down, eccentric body is located at a side of central tube, be provided with in the eccentric body and its cavity of communicating of two ends up and down, the tube wall of described central tube is provided with the duct that central tube is connected with described cavity, last plug and following plug are located at the upper and lower port place of cavity, described plug down is provided with bellmouth, guide pipe is located in the cavity, fixedly connected with last plug in its upper end, the upper end of described push rod is inserted in the guide pipe, the lower end is provided with described taper plug, and this taper plug seals described bellmouth under the effect of pressing bullet.
2. anti-pollution hot-washing wax remover device according to claim 1, it is characterized in that: the both sides of described guide pipe have symmetrically in the strip-shaped clamp groove of axis, be provided with the spacing bayonet lock that can move freely along draw-in groove in the described strip-shaped clamp groove, compression spring sleeve is contained in the periphery of guide pipe, its two ends roof pressure is between spacing bayonet lock and last plug, fixedlys connected with the bottom surface of spacing bayonet lock in the upper end of push rod.
3. a kind of anti-pollution hot-washing wax remover device according to claim 2, it is characterized in that: the upper end of described push rod is threaded with the bottom surface of spacing bayonet lock.
4. a kind of anti-pollution hot-washing wax remover device according to claim 2 is characterized in that: 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 an end of described stage clip is stuck in the pressure spring slot.
5. a kind of anti-pollution hot-washing wax remover device according to claim 1 is characterized in that: described portion of bottom center of going up plug is provided with screw, and the upper end of described guide pipe is threaded with described screw.
6. a kind of anti-pollution hot-washing wax remover device according to claim 1 is characterized in that: the internal diameter size of described central tube is identical with the internal diameter size of the oil pipe at its two ends.
7. a kind of anti-pollution hot-washing wax remover device according to claim 1, it is characterized in that: described taper plug is connected with the end thread of push rod.
8. a kind of anti-pollution hot-washing wax remover device according to claim 1 is characterized in that: the sealant on described taper plug body of casting surface by the interior body of casting and in being located at is formed.
9. a kind of anti-pollution hot-washing wax remover device according to claim 8, it is characterized in that: described sealant is the oil resistant elastic caoutchouc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320187166 CN203223208U (en) | 2013-04-15 | 2013-04-15 | Anti-pollution hot wash paraffin removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320187166 CN203223208U (en) | 2013-04-15 | 2013-04-15 | Anti-pollution hot wash paraffin removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203223208U true CN203223208U (en) | 2013-10-02 |
Family
ID=49250213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320187166 Expired - Fee Related CN203223208U (en) | 2013-04-15 | 2013-04-15 | Anti-pollution hot wash paraffin removal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203223208U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195392A (en) * | 2013-04-15 | 2013-07-10 | 中国海洋石油总公司 | Anti-pollution thermal washing wax removing device |
-
2013
- 2013-04-15 CN CN 201320187166 patent/CN203223208U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195392A (en) * | 2013-04-15 | 2013-07-10 | 中国海洋石油总公司 | Anti-pollution thermal washing wax removing device |
| CN103195392B (en) * | 2013-04-15 | 2016-05-25 | 中国海洋石油总公司 | Anti-pollution thermal washing paraffin removal unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| 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: 20131002 Termination date: 20200415 |