CN210317245U - Hydrodynamic rotary demulsification paraffin scraper - Google Patents
Hydrodynamic rotary demulsification paraffin scraper Download PDFInfo
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- CN210317245U CN210317245U CN201921187675.6U CN201921187675U CN210317245U CN 210317245 U CN210317245 U CN 210317245U CN 201921187675 U CN201921187675 U CN 201921187675U CN 210317245 U CN210317245 U CN 210317245U
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- wax
- paraffin
- mandrel
- section
- impeller
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Abstract
The utility model belongs to the technical field of oil field downhole operation tools, in particular to a hydrodynamic force rotating demulsification paraffin scraper, which comprises an upper joint, a pump shell, a mandrel, an impeller, a pump body and a paraffin breaking blade, wherein the upper joint is welded together after being butted with the pump shell; the wax-breaking device is characterized by also comprising an upper bearing mechanism and a lower bearing mechanism, wherein the mandrel is fixed at the center of the pump shell through the two bearing mechanisms, at least two impellers are sleeved on the mandrel between the two bearing mechanisms, the upper impeller and the lower impeller are separated through the pump body, and the wax-breaking blade is connected to the lower end of the mandrel; the wax scraping cylinder is connected to the pipe column connected to the upper end of the upper joint in series and comprises an expanding section at the lower part, a reducing section at the upper part and a conical transition section located between the expanding section and the reducing section, and the outer diameter of the expanding section is larger than the width of the wax breaking blade. This application is compared and is washed the paraffin removal mode with the heat to and the mechanical paraffin removal mode has very ideal wax effect of scraping, scrapes the wax through setting up the two-stage, and the two-stage is scraped and is assisted mutually between the wax simultaneously, has played extension life's each other effect.
Description
Technical Field
The utility model belongs to the technical field of oil field borehole operation instrument, especially, relate to a rotatory breakdown of emulsion paraffin scraper of hydrodynamic force.
Background
In the process of oil field development, light crude oil is firstly extracted, the content of colloid and asphaltene in the crude oil in the later stage of development is continuously increased, the difficulty of extraction is increased, and a plurality of difficulties are increased for maintenance work.
Due to different embedding depths, liquid production amounts and water contents of different oil reservoirs, the wax content of crude oil, the exploitation period and other influence factors, oil production wells of oil fields have wax precipitation rules and shaft wax precipitation points with different degrees, and through research, the wax precipitation point positions of the oil wells are between 0 and 550 m. The conventional methods such as hot washing and the like cannot meet the paraffin removal requirement of an oil well, so that paraffin is accumulated in a shaft for a long time to form a hard block, and a pipe column is difficult to run in the maintenance operation of the oil well. The wax scraping device has the advantages that the wax scraping device also has the advantages that the wax scraping device is used for scraping wax by machinery, although the wax scraping device is direct, the scraped wax hard block is large in size and not easy to discharge along with well washing liquid, meanwhile, mechanical damage often occurs, the service life of the wax scraping device is short, the wax scraping operation period is long, and the operation cost is increased.
SUMMERY OF THE UTILITY MODEL
For the equal unsatisfactory problem of paraffin removal effect of solving conventional hot washing method and the direct wax scraping method of machinery among the background art, the utility model provides a rotatory breakdown of viscosity paraffin scraper, the utility model discloses a pump goes into high-pressure liquid drive impeller high-speed rotatory, drives and scrapes the high-speed rotation of wax blade, the utility model discloses power is very sufficient, and paraffin removal effect is good, simultaneously the utility model discloses have rightting function and secondary and scrape the wax function, it is outstanding to scrape the wax effect.
The utility model provides a technical scheme is: a hydrodynamic force rotating demulsification paraffin scraper comprises an upper joint, a pump shell, a mandrel, an impeller, a pump body and a paraffin breaking blade, wherein the upper joint is welded together after being butted with the pump shell; the wax-breaking device is characterized by further comprising an upper bearing mechanism and a lower bearing mechanism, the mandrel is fixed at the center of the pump shell through the upper bearing mechanism and the lower bearing mechanism, at least two impellers are sleeved on the mandrel between the two bearing mechanisms and are separated by the pump body, the impellers are of a fully-open structure, an outer spacer sleeve is sleeved outside each impeller, a middle spacer sleeve is arranged at the center of each pump body, and the wax-breaking blade is connected to the lower end of the mandrel; the paraffin scraping cylinder is connected to a pipe column connected to the upper end of the upper connector in series and comprises an expanding section at the lower part, a reducing section at the upper part and a conical transition section located between the expanding section and the reducing section, the outer diameter of the expanding section is larger than the width of the paraffin breaking blade, the inner side of the lower end of the expanding section is processed into a conical surface cutting surface, and long holes for discharging paraffin are uniformly formed in the conical transition section along the circumferential direction of the side wall of the conical transition section.
The two ends of the pump shell are respectively provided with a filter plate, wherein a support sleeve is arranged between the upper end filter plate and the upper end bearing mechanism, the upper end filter plate is supported and fixed through the support sleeve, and the lower end filter plate is welded at the lower end of the pump shell; the cross section of the mandrel is in a regular hexagon shape; the bearing mechanism comprises a one-way flat-bottom push ball bearing, a deep groove bearing with a dustproof cover and a gasket between the two bearings.
The utility model has the advantages that: according to the wax scraping device, the hydrodynamic wax scraping device indirectly drives the wax breaking blade to rotate and break dead wax by utilizing the rotation of the impeller, so that the operation time is effectively reduced, and the operation efficiency is improved; secondly, the wax is mechanically scraped through the wax scraping cylinder, so that the wax scraping device has a two-stage wax scraping function, most of dead wax is crushed by the first-stage wax scraping device, and the mechanical damage probability of the second-stage wax scraping device is reduced; the outer diameter of the second-stage wax scraping device is larger than the wax scraping diameter of the first-stage wax scraping device, so that the secondary wax scraping function is realized, the rigid centralizing function is realized, the friction between the scraper blade and the inner wall of the sleeve during rotation is reduced and protected, and the service lives of the blade and the mandrel are prolonged; wax is scraped to the two-stage and is mutually supported, uses simultaneously for the wax effect of scraping of this application is especially outstanding, and the life of wax device is scraped to the two-stage moreover all obtains guaranteeing.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of a part of the structure of the present invention.
Fig. 3 is a schematic view of a part of the structure of the present invention.
FIG. 4 is a view in elevation at A-A of FIG. 1.
FIG. 5 is a view in elevation at B-B of FIG. 1.
FIG. 6 is a view looking down at C-C in FIG. 1.
FIG. 7 is a view looking in the direction D-D of FIG. 1.
FIG. 8 is a view looking in the direction D-D of FIG. 1.
In the figure: 1-upper joint, 2-pump shell, 3-mandrel, 4-impeller, 5-pump body, 6-wax breaking blade, 7-bearing mechanism, 8-filter plate, 9-outer spacer sleeve, 10-middle spacer sleeve, 11-wax scraping cylinder, 111-expanding section, 112-conical transition section, 113-reducing section, 12-support sleeve, 13-unidirectional flat bottom pushing ball bearing, 14-gasket, 15-deep groove bearing with dust cover.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the device comprises an upper joint 1, a pump shell 2, a mandrel 3, an impeller 4, a pump body 5 and a wax breaking blade 6, wherein the upper joint 1 is welded with the pump shell 2 after being butted. The above is the structure existing in the prior art, and is not described in detail herein.
The utility model discloses an innovation point lies in:
with reference to fig. 1-8, the axial flow wax remover further comprises an upper bearing mechanism 7 and a lower bearing mechanism 7, the mandrel 3 is fixed at the center of the pump case 2 through the upper bearing mechanism 7 and the lower bearing mechanism 7, the mandrel 3 can rotate in the pump case 2, at least two impellers 4 are sleeved on the mandrel 3 between the upper bearing mechanism 7 and the lower bearing mechanism 7, the number of the impellers 4 is not clearly limited, and the impellers can be according to the needs, in this embodiment, the number of the impellers 4 is 6, the 6 wax breaking blades 6 have enough power for high-speed rotation, the wax scraping effect is very outstanding, the upper impeller 4 and the lower impeller 4 are separated through the pump body 5, as shown in fig. 2, the impellers 4 adopt a fully open structure, so that water can smoothly pass through the pump case 2, an outer spacer sleeve 9 is sleeved outside each impeller 4, the outer spacer sleeve 9 is abutted between the two pump bodies 5, so that axial play does not occur, a middle spacer sleeve, the middle spacer sleeve 10 is abutted between the two impellers 4 and is also used for axially fixing the plurality of impellers 4 so as not to generate axial movement; the wax breaking blade 6 is connected to the lower end of the mandrel 3, the connection mode can be screw connection, or connection between surfaces can be through bolts, the application is not limited to a specific connection mode, the embodiment is suitable for the inner diameter of the sleeve to be 139.7mm, and the width of the wax breaking blade 6 in the embodiment is 118 mm; when the device is used, high-pressure liquid is pumped in to drive the impeller 4 to rotate at a high speed, the rotation of the impeller 4 drives the mandrel 3 to rotate, and then the wax breaking blade 6 connected to the mandrel 3 is driven to rotate at a high speed, deposited wax in a shaft is crushed to form oil in water, and then the oil in water is taken out of the well through well washing operation.
The pipe column connected with the upper end of the upper joint 1 is connected with a wax scraping cylinder 11 in series, the wax scraping cylinder 11 comprises an expanding section 111 at the lower part, a reducing section 113 at the upper part and a conical transition section 112 positioned between the expanding section and the reducing section, the outer diameter of the expanding section 111 is larger than the width of the wax breaking blade 6, the outer diameter of the wax scraping cylinder 11 is 121mm in the embodiment and is slightly larger than the width of the wax breaking blade 6, on one hand, the wax breaking blade 6 is protected by rigid centralization, the wax breaking blade 6 is protected from friction with the inner wall of the sleeve when rotating, on the other hand, the wax scraping cylinder plays a role for the second time, the inner side of the lower end of the expanding section 111 is processed into a conical surface cutting surface, and the conical surface is relatively sharp in the descending process of the wax scraping cylinder, so that the wax scraping resistance is reduced, the tapered transition section 112 is uniformly provided with elongated holes 1121 for wax removal along the circumferential direction of the side wall thereof, and wax scraped secondarily is collected in the tapered transition section 112 and discharged through the elongated holes 1121.
The two ends of the pump shell 2 are respectively provided with a filter plate 8 to prevent large particle impurities contained in the well-flushing liquid from blocking or clamping the impeller 4, wherein a support sleeve 12 is arranged between the upper end filter plate 8 and the upper end bearing mechanism 7, the upper end filter plate 8 is supported and fixed through the support sleeve 12, and the lower end filter plate 8 is welded at the lower end of the pump shell 2.
The cross-section of the spindle 3 is regular hexagonal in order to be able to transmit the torque generated by the impeller 4.
The bearing mechanism 7 comprises a one-way flat-bottom push ball bearing 13, a deep groove bearing 15 with a dustproof cover and a gasket 14 between the two bearings, and the mechanism can know that the mandrel 3 can not only rotate in the pump shell 2, but also bear certain axial force, and further know that the wax breaking blade 6 arranged on the mandrel 3 can bear certain resistance.
The method comprises the following steps:
a. connecting the application to the bottom of a paraffin scraping pipe column;
b. when the wax removing device is put into a well, the center of the shaft is ensured to be aligned, and the wax removing device is prevented from breaking the wax blade 6 by the pier;
c. when the paraffin scraping pipe column is blocked by paraffin, the cement truck pumps high-pressure water flow to impact the impeller 4 to rotate, the paraffin breaking blade 6 is driven to break and kill the paraffin, and circulating liquid carries the broken paraffin out of the well through the annular space of the oil sleeve;
d. the secondary wax scraping cylinder 11 connected with the upper part cleans the residual wax on the inner wall of the sleeve; the diameter of the wax scraping cylinder 11 is larger than the width of the wax breaking blade 6, so that the wax scraping cylinder 11 plays a rigid righting role and protects the wax breaking blade 6 from rubbing the inner wall of the sleeve when rotating.
Maintenance and repair: use the back and use high temperature water or steam washing, accuse clean this application inside ponding, by the upper portion pour into the used oil back square, the wax blade 6 is broken in the anticlockwise rotation of relapse, makes the engine oil can form the oil film in the pump and realize anticorrosive to use next time.
According to the wax scraping device, the wax breaking blade 6 is indirectly driven to rotate by the rotation of the impeller 4 through the hydrodynamic wax scraping device to break and kill wax, so that the operation time is effectively reduced, and the operation efficiency is improved; secondly, the wax is mechanically scraped through the wax scraping cylinder 11, so that the wax scraping device has a two-stage wax scraping function, most of dead wax is crushed by the first-stage wax scraping device, and the mechanical damage probability of the second-stage wax scraping device is reduced; the outer diameter of the second-stage wax scraping device is larger than the wax scraping diameter of the first-stage wax scraping device, so that the secondary wax scraping function is achieved, the rigid centralizing function is achieved, friction between the wax breaking blade 6 and the inner wall of the sleeve when the wax breaking blade 6 rotates is reduced and protected, and meanwhile, the service lives of the wax breaking blade 6 and the mandrel 3 are prolonged; wax is scraped to the two-stage and is mutually supported, complements each other, uses simultaneously for this application scrape the wax effect especially outstanding, and the one-time through can be with the whole scrapes totally of the wax deposition in the pit shaft, and the life of wax device is scraped to the two-stage moreover all obtains guaranteeing.
Claims (4)
1. A hydrodynamic force rotating demulsification paraffin scraper comprises an upper joint (1), a pump shell (2), a mandrel (3), an impeller (4), a pump body (5) and a paraffin breaking blade (6), wherein the upper joint (1) is welded with the pump shell (2) after being butted; the method is characterized in that: the wax-breaking device is characterized by further comprising an upper bearing mechanism (7) and a lower bearing mechanism (7), the mandrel (3) is fixed at the center of the pump shell (2) through the upper bearing mechanism (7) and the lower bearing mechanism (7), at least two impellers (4) are sleeved on the mandrel (3) between the two bearing mechanisms (7), the upper impeller (4) and the lower impeller (4) are separated through the pump body (5), the impellers (4) are of a fully-open structure, an outer spacer sleeve (9) is sleeved outside each impeller (4), a middle spacer sleeve (10) is arranged at the center of each pump body (5), and the wax-breaking blade (6) is connected to the lower end of the mandrel (3; the paraffin scraping cylinder (11) is connected to a pipe column connected to the upper end of the upper connector (1) in series, the paraffin scraping cylinder (11) comprises an expanding section (111) at the lower portion, a reducing section (113) at the upper portion and a conical transition section (112) located between the expanding section and the reducing section, the outer diameter of the expanding section (111) is larger than the width of the paraffin breaking blade (6), the inner side of the lower end of the expanding section (111) is machined into a conical surface cutting surface, and long holes (1121) for discharging paraffin are uniformly formed in the conical transition section (112) along the circumferential direction of the side wall of the conical transition section.
2. The hydrodynamic rotary demulsifying paraffin scraper as claimed in claim 1, wherein: the two ends of the pump shell (2) are respectively provided with a filter plate (8), wherein a supporting sleeve (12) is arranged between the upper end filter plate (8) and the upper end bearing mechanism (7), the upper end filter plate (8) is supported and fixed through the supporting sleeve (12), and the lower end filter plate (8) is welded at the lower end of the pump shell (2).
3. The hydrodynamic rotary demulsifying paraffin scraper as claimed in claim 1, wherein: the cross section of the mandrel (3) is in a regular hexagon shape.
4. The hydrodynamic rotary demulsifying paraffin scraper as claimed in claim 1, wherein: the bearing mechanism (7) comprises a one-way flat-bottom push ball bearing (13), a deep groove bearing (15) with a dustproof cover and a gasket (14) between the two bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921187675.6U CN210317245U (en) | 2019-07-26 | 2019-07-26 | Hydrodynamic rotary demulsification paraffin scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921187675.6U CN210317245U (en) | 2019-07-26 | 2019-07-26 | Hydrodynamic rotary demulsification paraffin scraper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210317245U true CN210317245U (en) | 2020-04-14 |
Family
ID=70126032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921187675.6U Expired - Fee Related CN210317245U (en) | 2019-07-26 | 2019-07-26 | Hydrodynamic rotary demulsification paraffin scraper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210317245U (en) |
-
2019
- 2019-07-26 CN CN201921187675.6U patent/CN210317245U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200603 Address after: 163000 apartment 527, 5F, business service apartment building, No.24, phase I, yangguangjiayuan residential community, ranghu District, Daqing City, Heilongjiang Province Patentee after: Daqing Jianyu Hongtu Petroleum Technology Co.,Ltd. Address before: Room 201, Innovation Building, Office Building, Renhu Road Mass Business Incubation Base, Daqing City, Heilongjiang Province, 163000 Patentee before: DAQING RUNXIN PETROCHEMICAL TECHNOLOGY Co.,Ltd. |
|
| 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: 20200414 Termination date: 20210726 |