CN203441436U - Underground paraffin removing and preventing device - Google Patents
Underground paraffin removing and preventing device Download PDFInfo
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- CN203441436U CN203441436U CN201320516743.5U CN201320516743U CN203441436U CN 203441436 U CN203441436 U CN 203441436U CN 201320516743 U CN201320516743 U CN 201320516743U CN 203441436 U CN203441436 U CN 203441436U
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- plug
- protective cover
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- guide pipe
- permanent magnet
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Abstract
The utility model discloses an underground paraffin removing and preventing device which comprises an upper connector, a pipe body, an eccentric body, an upper screwed plug, a lower screwed plug, a guide pipe, a push rod, a limiting clamping pin, a plug, a compressed spring, a protective cover, a lower connector and a permanent magnet. The upper connector is arranged at the upper end of the pipe body, the eccentric body is arranged on the side face of the pipe body, a cavity communicated with the upper end of the eccentric body and the lower end of the eccentric body is formed in the eccentric body, a hole is formed between the cavity and the pipe body, the upper screwed plug and the lower screwed plug are arranged at the position of an opening of the upper end of the cavity and the position of an opening of the lower end of the cavity respectively, the lower screwed plug is provided with a seal groove and a through hole, and the guide pipe is arranged in the cavity and fixedly connected with the upper screwed plug. The push rod is inserted into the guide pipe after being connected with the limiting clamping pin, the lower end of the push rod is provided with the plug, the protective cover is connected with a ladder-shaped shell on the lower portion of the pipe body, and the permanent magnet is fixed between the protective cover and the ladder-shaped shell. The underground paraffin removing and preventing device has the advantages that when oil flow flows through the underground paraffin removing and preventing device, the magnetic field generated by the permanent magnet can inhibit precipitation and deposition of paraffin, therefore, the paraffin removal period is effectively prolonged, the well flushing time is reduced, and the paraffin removal cost is saved.
Description
Technical field
The utility model relates in oil exploitation process the downhole tool equipment for clear wax control, specifically, and the particularly clear wax-proofing apparatus in a kind of down-hole.
Background technology
In oil exploitation process, paraffin is separated out and is piled up in tube inner wall, and not only impact is produced, and also can cause oil well to block, and oil well is stopped production, and therefore, wax control and wax removal are links very important in oil recovery process.Magneto wax control device can be arranged on any position of oil pipe, oil stream can effectively suppress separating out of paraffin under the effect in magnetic field, extends period of removing the wax, but can not suppress the deposition of paraffin completely, still need regularly to carry out wax removal operation, and magneto wax control device itself do not possess wax removal function.Hot-washing wax remover is a kind of wax removal technology being most widely used, and can remove fast the paraffin depositing on tube wall.Offshore oilfield is electric immersible pump well substantially, 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 intake, 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, and flushing fluid is invaded reservoir and is easily caused the shortcomings such as reservoir damage.
In order to solve magneto wax control device, do not possess wax removal function, offshore oilfield electric immersible pump well hot-washing wax remover exists that efficiency is low, energy consumption is high, flushing fluid is invaded reservoir and easily caused the problems such as reservoir damage, need a kind of downhole hardware that simultaneously possesses wax removal and wax control function of exploitation, this device can be arranged on below wax deposition point, the deposition that can effectively suppress paraffin by magnetic fields, extend period of removing the wax, reduce well-flushing number of times, reduce wax removal cost; During hot-washing wax remover, can form short-circuit cycle, thereby effectively improve heat, wash efficiency, reduce energy consumption, avoid flushing fluid to invade reservoir and cause reservoir damage.
Utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art and a kind of clear wax-proofing apparatus in down-hole that can simultaneously realize wax control and anti-pollution thermal washing wax removal function of providing, it can be realized and reduce well-flushing number of times, reduction wax removal cost, improve heat and wash efficiency, reduce energy consumption, during well-flushing, can effectively avoid the object of reservoir pollution.
The technical scheme that the utility model solution prior art problem adopts is: the clear wax-proofing apparatus in a kind of down-hole, and it comprises upper binding head, body, eccentric body, upper plug, lower plug, guide pipe, push rod, spacing bayonet lock, plug, stage clip, protective cover, lower union joint and permanent magnet;
Wherein, upper binding head is located at the upper end of body, and eccentric body is located at the side of body, and in eccentric body, is provided with the cavity communicating with its upper and lower two ends, between described cavity and described body, is provided with the duct that described cavity is communicated with described body; Described upper plug and described lower plug are arranged at respectively the upper and lower port place of described cavity, and described lower plug is provided with seal groove and intercommunicating pore; Described guide pipe is located in described cavity, and the upper end of described guide pipe is fixedly connected with described upper plug; Described push rod is inserted in described guide pipe after being connected with spacing bayonet lock; Described push rod lower end is provided with plug, and described plug is realized in oil pipe and being sealed with described seal groove acting in conjunction under the effect of described stage clip; Described body bottom is stepped housing, and described protective cover is connected with described stepped housing by suitable interior screw thread, and described protective cover lower end is provided with for connecting the lower union joint of bottom oil pipe; Described permanent magnet is fixed between described protective cover and stepped housing.
Below above technical scheme is further elaborated:
Further, also comprise sealing ring, described protective cover upper end is provided with C shape groove, and described sealing ring is fixed in described C shape groove, and the interior side steps that described stepped housing is inserted in described protective cover upper end realizes sealing.
Further, the internal diameter of described body and described protective cover size is all identical with the internal diameter size of two ends oil pipe.
Further, the both sides of described guide pipe have symmetrically in the strip-shaped clamp groove of axis, and described spacing bayonet lock can move freely along described strip-shaped clamp groove, and described compression spring sleeve is located on guide pipe, and its top, two ends is pressed between described spacing bayonet lock and upper plug.
Further, described permanent magnet is for obtaining one group of ring-type in parallel magnetic field, vertical magnetic field or mutual magnetic field or according to certain regularly arranged arc-shaped permanent magnet.
Further, described sealing ring is heatproof >100 ℃, the sealing ring of oil resistant.
Further, described stage clip is detachable is fixed between spacing bayonet lock and upper plug.
The beneficial effects of the utility model are:
One, the clear wax-proofing apparatus in down-hole is arranged on below wax deposition point, and by electric submersible pump and packer down to clear wax-proofing apparatus below, when oily stream is flowed through the clear wax-proofing apparatus in down-hole, by described permanent magnet, produce under the effect in ， magnetic field, magnetic field, make the brilliant trend of arranging of wax consistent, the deposition that can suppress paraffin, effectively extend period of removing the wax, reduced well-flushing number of times, saved wax removal cost.
Two, during hot-washing wax remover; close vent valve, annular injection enters fluid, when injection pressure be greater than that the clear wax-proofing apparatus in down-hole sets open pressure time; on plug, move; open oil jacket circulation canal, realized short-circuit cycle, improved heat and washed efficiency; reduced energy consumption; due to the effect of packer, electric submersible pump, ball-and-seat, Y type instrument and plug, hot wash body can not flow to the reservoir position below packer, has realized heat and has washed the reservoir protection in process.
Accompanying drawing explanation
Fig. 1 is the vertical profile TV structure schematic diagram of the clear wax-proofing apparatus in the utility model down-hole;
Fig. 2 is the cross-sectional TV structure schematic diagram of position, duct described in the utility model embodiment;
Fig. 3 is the vertical profile TV structure schematic diagram of body shown in Fig. 1;
Fig. 4 is the vertical profile TV structure schematic diagram of protective cover shown in Fig. 1;
Fig. 5 is the structural representation of concrete Application Example of the present invention.
Fig. 6 is that described permanent magnet is in concrete application
anti-cured principle schematic.
The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
The specific embodiment
Below with reference to drawings and the specific embodiments, describe the technical solution of the utility model in detail, so as clearer, understand invention essence of the present utility model intuitively.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 4, the clear wax-proofing apparatus in the utility model down-hole, it comprises upper binding head 1, body 2, eccentric body 3, upper plug 6, lower plug 7, guide pipe 10, push rod 11, spacing bayonet lock 12, plug 13, stage clip 14, protective cover 15, lower union joint 16 and permanent magnet 17;
Wherein, upper binding head 1 is located at the upper end of body 2, and its effect is that the side of body 2 is provided with eccentric body 3 for connecting top oil pipe, and in eccentric body 3, be provided with the cavity 4 communicating with its upper and lower two ends, between cavity 4 and body 2, be provided with the duct 5 that cavity 4 is connected with body 2; Upper plug 6 and lower plug 7 are arranged at respectively the upper and lower port place of cavity 4, and in lower plug 7, are provided with seal groove 8 and intercommunicating pore 9; Further, guide pipe 10 is located in cavity 4, and specifically, the upper end of guide pipe 10 is fixedly connected with the upper plug 6 of cavity 4 upper ends; Meanwhile, push rod 11 is inserted in guide pipe 10 after being connected with spacing bayonet lock 12, and push rod 11 lower ends are provided with plug 13, and plug 13 is realized in oil pipe and being sealed with seal groove 8 actings in conjunction under the effect of stage clip 14; Secondly, body 2 bottoms are stepped housing 201, and protective cover 15 is connected with stepped housing 201 by suitable screw thread, and protective cover 15 lower ends are provided with for connecting the lower union joint 16 of bottom oil pipe; In the present embodiment, the utility model, with respect to traditional clear anti-cured equipment, has increased permanent magnet 17, and permanent magnet 17 is fixed between described protective cover 15 and stepped housing 201.
Specifically, permanent magnet 17 is for obtaining one group of ring-type in parallel magnetic field, vertical magnetic field or mutual magnetic field or according to certain regularly arranged arc-shaped permanent magnet.
Meanwhile, the clear wax-proofing apparatus in the utility model down-hole, also comprises sealing ring 18, and protective cover 15 upper ends are provided with C shape groove 15-1, and described sealing ring 18 is fixed in described C shape groove 15-1, and described protective cover 15 upper ends are inserted the inner side of stepped housing 201 and realized sealing.In the present embodiment, described sealing ring 18 oil resistants, and heatproof, when oil flows temperature higher than 100 ℃, on sealing ring 18 nothing impacts.
Further, the internal diameter of body 2 and protective cover 15 size is all identical with the internal diameter size of two ends oil pipe.
It should be noted that, the both sides of guide pipe 10 have symmetrically in a plurality of strip-shaped clamp groove (not shown) of axis, spacing bayonet lock 12 can move freely along described strip-shaped clamp groove (not shown), described stage clip 14 is sheathed on guide pipe 10, its top, two ends is pressed between described spacing bayonet lock 12 and upper plug 6, and stage clip 14 can arbitrarily be changed, and then regulate the pressure of opening of circulation canal.
The clear wax-proofing apparatus in the utility model down-hole, the application that it is concrete, in conjunction with Fig. 5, elaborate, as shown in Figure 5, in figure, structure comprises tubing hanger 19, oil pipe 20, sleeve pipe 21, storm valve 22, the clear wax-proofing apparatus 23 in down-hole, vent valve 24, packer 25, Y type instrument 26, seating nipple 27 and electric submersible pump 28.The clear wax-proofing apparatus 23 in the utility model down-hole is arranged on wax deposition point with upper/lower positions, below packer 25 installs down to this, but when oil stream passes through the clear wax-proofing apparatus 23 in down-hole, by the effect of permanent magnet 17, obtain parallel magnetic field, under the effect of parallel magnetic field, make the brilliant trend of arranging of wax consistent, thereby the gathering and the deposition that effectively suppress paraffin, effectively reduce well-flushing number of times, save wax removal cost, its principle schematic as shown in Figure 6.
Once wax deposition starts to affect oil well productivity, need to carry out as early as possible heat and wash operation, when washing, heat closes vent valve 24 by liquid controling pipe line, by oil jacket annular space, inject hot wash body, when oil jacket annular space internal pressure surpass that the clear wax-proofing apparatus circulation canal in down-hole sets open pressure time, wherein on plug 13 and stage clip 14, move, hot wash body is by entering oil pipe in anti-pollution thermal washing paraffin removal unit 23, thereby realized heat and washed the short-circuit cycle in process, effectively raise heat and wash efficiency, reduced energy consumption, in washing well process because having closed vent valve 24, and the effect due to seating nipple 27 and electric submersible pump 28 interior ball-and-seats, hot wash body can not flow to the reservoir position of packer below 25, thereby effectively avoided the pollution of flushing fluid to reservoir.After well-flushing completes, due to the effect of gravity and stage clip 14, the plug 13 in the clear wax-proofing apparatus 23 in down-hole moves down, and makes heat wash channel enclosed, does not affect the normal production of oil well.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model manual and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (7)
1. the clear wax-proofing apparatus in down-hole, is characterized in that: it comprises upper binding head, body, eccentric body, upper plug, lower plug, guide pipe, push rod, spacing bayonet lock, plug, stage clip, protective cover, lower union joint and permanent magnet;
Wherein, upper binding head is located at the upper end of body, and eccentric body is located at the side of body, and in eccentric body, is provided with the cavity communicating with its upper and lower two ends, between described cavity and described body, is provided with the duct that described cavity is communicated with described body; Described upper plug and described lower plug are arranged at respectively the upper and lower port place of described cavity, and described lower plug is provided with seal groove and intercommunicating pore; Described guide pipe is located in described cavity, and the upper end of described guide pipe is fixedly connected with described upper plug; Described push rod is inserted in described guide pipe after being connected with spacing bayonet lock; Described push rod lower end is provided with plug, and described plug is realized in oil pipe and being sealed with described seal groove acting in conjunction under the effect of described stage clip; Described body bottom is stepped housing, and described protective cover is connected with described stepped housing by suitable screw thread, and described protective cover lower end is provided with for connecting the lower union joint of bottom oil pipe; Described permanent magnet is fixed between described protective cover and stepped housing.
2. the clear wax-proofing apparatus in down-hole according to claim 1, it is characterized in that: also comprise sealing ring, described protective cover upper end is provided with C shape groove, and described sealing ring is fixed in described C shape groove, and the interior side steps that described stepped housing is inserted in described protective cover upper end realizes sealing.
3. the clear wax-proofing apparatus in down-hole according to claim 1, is characterized in that: the internal diameter size of described body and described protective cover is all identical with the internal diameter size of two ends oil pipe.
4. the clear wax-proofing apparatus in down-hole 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, described spacing bayonet lock can move freely along described strip-shaped clamp groove, described compression spring sleeve is located on guide pipe, and its top, two ends is pressed between described spacing bayonet lock and upper plug.
5. the clear wax-proofing apparatus in down-hole according to claim 1, is characterized in that: described permanent magnet is for obtaining one group of ring-type in parallel magnetic field, vertical magnetic field or mutual magnetic field or according to certain regularly arranged arc-shaped permanent magnet.
6. the clear wax-proofing apparatus in down-hole according to claim 2, is characterized in that: described sealing ring is heatproof >100 ℃, the sealing ring of oil resistant.
7. the clear wax-proofing apparatus in down-hole according to claim 1, is characterized in that: described stage clip is detachable to be fixed between spacing bayonet lock and upper plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320516743.5U CN203441436U (en) | 2013-08-23 | 2013-08-23 | Underground paraffin removing and preventing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320516743.5U CN203441436U (en) | 2013-08-23 | 2013-08-23 | Underground paraffin removing and preventing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203441436U true CN203441436U (en) | 2014-02-19 |
Family
ID=50092496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320516743.5U Expired - Fee Related CN203441436U (en) | 2013-08-23 | 2013-08-23 | Underground paraffin removing and preventing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203441436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542429A (en) * | 2017-10-17 | 2018-01-05 | 东北石油大学 | Impeller flow-guiding type speed change eddy flow wax-proofing apparatus |
-
2013
- 2013-08-23 CN CN201320516743.5U patent/CN203441436U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542429A (en) * | 2017-10-17 | 2018-01-05 | 东北石油大学 | Impeller flow-guiding type speed change eddy flow wax-proofing apparatus |
| CN107542429B (en) * | 2017-10-17 | 2018-05-18 | 东北石油大学 | Impeller flow-guiding type speed change eddy flow wax-proofing apparatus |
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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: 20140219 Termination date: 20200823 |