CN203961911U - The down-hole wax control instrument with sand-proof function - Google Patents
The down-hole wax control instrument with sand-proof function Download PDFInfo
- Publication number
- CN203961911U CN203961911U CN201420374755.3U CN201420374755U CN203961911U CN 203961911 U CN203961911 U CN 203961911U CN 201420374755 U CN201420374755 U CN 201420374755U CN 203961911 U CN203961911 U CN 203961911U
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- China
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- sand
- outer tube
- wax
- assembly
- wax control
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Abstract
The down-hole wax control instrument with sand-proof function, is comprised of A assembly and B assembly, and A assembly is comprised of wax control compo pipe, outer tube A, union A and sand control screens A; B assembly is comprised of inner tube, outer tube B, union B and sand control screens B, sand control screens A and the welding of outer tube A port; Sand control screens B and the welding of outer tube B port; The lower end of B assembly can be sleeved in the union A of A assembly; On the inwall of outer tube A and outer tube B, be coated with wax control surface course; On inner tube wall and outer wall, be all coated with wax control surface course; On sand control screens A and sand control screens B, be provided with several equally distributed apertures.The utlity model has the function of wax control and sand control, guaranteed the unimpeded of pipeline, improved crude oil production efficiency, avoided the pollution that heat is washed, chemical well-flushing causes, effectively extended the cycle of wax removal sand removal, promote the use of and there is good economic and social benefit.
Description
Technical field
The utility model belongs to oil extraction apparatus field, particularly relates to a kind of down-hole wax control instrument with sand-proof function, is applicable to pumpingh well, flowing well and ground crude oil transportation system.
Background technology
In crude oil, generally all contain wax, there is the oil field that a lot of paraffin contents are very high in China, when oil producing operation, crude oil from the process of subsurface to surface because temperature constantly reduces, wax in crude oil can be separated out and condense on sucker rod and tube wall after temperature reaches wax precipitation point (generally 40 ℃ of left and right), the operation that finally causes pumping stops, and must remove the wax solidifying by " well-flushing " and could continue oil pumping, and clear wax control becomes the important technical links of crude oil production.
In petroleum recovering process, sand production there will be following harm: sand buries oil reservoir or pit shaft sand plug causes oil well to stop production, shake out and make that ground and underground equipment are seriously denuded, sand card, the maintenance loads such as sand washing inspection pump, the clear tank in ground increase severely, and shake out also can cause cave-in when serious and damage sleeve pipe.
Application number is that the Chinese patent of CN201320854472.4 discloses a kind of oil field well wax control instrument, by outer tube and inner active body, formed, wherein: outer tube diameter 60mm, length 600mm, its lower end closed, overcoat tube wall is evenly distributed with vertically the penetrating groove of length 300mm, width 5mm from lower surface, inner active body is the cylinder of three joint length 190mm, its surrounding is radially uniform-distribution with dead slot radially, total cross-sectional area of dead slot is controlled at 90% of the outer tube tube wall groove gross area, every two pitch cylinder active body are separated with the red copper annulus of Φ 50 * 10 * 5mm, effectively prevent and delay wax at tube wall, condensing on sucker rod, thereby extend the clean-out service cycle of oil well, being applied in of this wax control instrument also can be avoided the wash/pollution that chemical well-flushing causes of conventional heat when improving crude oil production efficiency, significant economy and social effect will make it have wide application prospect, comprise downhole crude exploitation and ground crude oil transportation.If adopt this patent, although inner active body effectively prevent and delay wax condensing on tube wall, sucker rod, still there is following defect: in the use procedure of wax control instrument, very easily cause the obstruction of spray-hole in wax-proofing apparatus, cause and stop well operations.
Summary of the invention
The purpose of this utility model is to overcome above-described problem.
The purpose of this utility model is achieved in that the down-hole wax control instrument with sand-proof function, by A assembly and B assembly, formed, A assembly is comprised of wax control compo pipe, outer tube A, union A and sand control screens A, outer tube A is enclosed within the outside of wax control compo pipe, union A and wax control compo pipe are threaded connection, wax control compo pipe is configured to upper and lower two parts, on the upper and lower two parts tube wall of wax control compo pipe, is provided with several equally distributed apertures; B assembly is comprised of inner tube, outer tube B, union B and sand control screens B, outer tube B is enclosed within the outside of inner tube, union B and outer tube B are threaded connection, on inner pipe wall, be provided with several equally distributed apertures, inner tube upper end is set to blind end, it is characterized in that: described sand control screens A and the welding of outer tube A port, be provided with several equally distributed apertures on sand control screens A.
Described sand control screens B and the welding of outer tube B port, be provided with several equally distributed apertures on sand control screens B.
The lower end of described B assembly can be sleeved in the union A of A assembly.
On described outer tube A and the inwall of outer tube B, be coated with wax control surface course.
On the inner and outer wall of described inner tube, be all coated with wax control surface course.
The utlity model has the function of wax control and sand control, guaranteed the unimpeded of pipeline, improved crude oil production efficiency, avoided the pollution that heat is washed, chemical well-flushing causes, effectively extended the cycle of wax removal sand removal, promote the use of and there is good economic and social benefit.
Accompanying drawing explanation
Fig. 1 is the mounting structure schematic diagram of the utility model A assembly.
Fig. 2 is the mounting structure schematic diagram of the utility model B assembly.
In figure: 1. union A; 2. outer tube A; 3. wax control compo pipe; 4. sand control screens A; 5. union B; 6. outer tube B; 7. inner tube; 8. sand control screens B.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
The down-hole wax control instrument with sand-proof function, by A assembly and B assembly, formed, A assembly is comprised of wax control compo pipe 3, outer tube A2, union A1 and sand control screens A4, outer tube A2 is enclosed within the outside of wax control compo pipe 3, union A1 and wax control compo pipe 3 are threaded connection, wax control compo pipe 3 is configured to upper and lower two parts, and wax control compo pipe is provided with several equally distributed apertures on two parts tube wall Shang Xia 3; B assembly is comprised of inner tube 7, outer tube B6, union B5 and sand control screens B8, outer tube B6 is enclosed within the outside of inner tube 7, union B5 and outer tube B6 are threaded connection, on inner tube 7 tube walls, be provided with several equally distributed apertures, inner tube 7 upper ends are set to blind end, described sand control screens A4 and the welding of outer tube A2 port, be provided with several equally distributed apertures on sand control screens A4; Described sand control screens B8 and the welding of outer tube B6 port, be provided with several equally distributed apertures on sand control screens B8; The lower end of described B assembly can be sleeved in the union A1 of A assembly; On described outer tube A2 and the inwall of outer tube B6, be coated with wax control surface course; On described inner tube 7 inner and outer walls, be all coated with wax control surface course.
During concrete enforcement, A assembly and B component string are connected in oil well pipeline, crude oil enters 3 parts of wax control compo pipe through sand control screens A4 from the lower end of A assembly, groove from tube wall small hole injection to outer tube A 2 and wax control compo pipe 3 under pressure, along groove, upwards flow, on from upper part groove small hole injection to wax control compo pipe 3, in part hole, flow to B assembly; When crude oil flows to B assembly through sand control screens, by 7 times stomidiums of inner tube, enter inner tube 7, area of space from inner tubal wall small hole injection to inner tube 7 and outer tube B6 upwards flows under pressure, by union B5, enter oil pumping pipeline again, during this period, sand control screens effectively stops sand grains to enter the obstruction that causes spray-hole in wax control instrument in wax control instrument; Crude oil forms turbulent flow and fully contacts with wax control alloy surface layer; By electrochemical action, change the reunion behavior of wax electronic structure of molecule and then change wax crystalline substance, effectively suppress and slow down the piece that condenses into of wax, impel the wax of separating out to float on a liquid with small crystal habit and with liquid flow, therefore effectively prevent and delay wax condensing on tube wall, sucker rod, thereby extending the clean-out service cycle of oil well.
Claims (5)
1. the down-hole wax control instrument with sand-proof function, by A assembly and B assembly, formed, A assembly is by wax control compo pipe (3), outer tube A(2), union A(1) and sand control screens A(4) form, outer tube A(2) be enclosed within the outside of wax control compo pipe (3), union A(1) be threaded connection with wax control compo pipe (3), wax control compo pipe (3) is configured to upper and lower two parts, on the upper and lower two parts tube wall of wax control compo pipe (3), is provided with several equally distributed apertures; B assembly is by inner tube (7), outer tube B(6), union B(5) and sand control screens B(8) form, outer tube B(6) be enclosed within the outside of inner tube (7), union B(5) with outer tube B(6) be threaded connection, on inner tube (7) tube wall, be provided with several equally distributed apertures, inner tube (7) upper end is set to blind end, it is characterized in that: described sand control screens A(4) with outer tube A(2) port welding, sand control screens A(4) on be provided with several equally distributed apertures.
2. the down-hole wax control instrument with sand-proof function according to claim 1, is characterized in that: described sand control screens B(8) with outer tube B(6) port welding, sand control screens B(8) on be provided with several equally distributed apertures.
3. according to the down-hole wax control instrument with sand-proof function described in claim 1, it is characterized in that: the lower end of described B assembly can be sleeved on the union A(1 of A assembly) in.
4. according to the down-hole wax control instrument with sand-proof function described in claim 1, it is characterized in that: described outer tube A(2) and outer tube B(6) inwall on be coated with wax control surface course.
5. according to the down-hole wax control instrument with sand-proof function described in claim 1, it is characterized in that: on the inner and outer wall of described inner tube (7), be all coated with wax control surface course.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420374755.3U CN203961911U (en) | 2014-07-09 | 2014-07-09 | The down-hole wax control instrument with sand-proof function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420374755.3U CN203961911U (en) | 2014-07-09 | 2014-07-09 | The down-hole wax control instrument with sand-proof function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203961911U true CN203961911U (en) | 2014-11-26 |
Family
ID=51922510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420374755.3U Expired - Fee Related CN203961911U (en) | 2014-07-09 | 2014-07-09 | The down-hole wax control instrument with sand-proof function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203961911U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266160A (en) * | 2018-04-16 | 2018-07-10 | 陕西明特石油技术有限公司 | A kind of anti-corrosion, scale-inhibiting wax-proofing apparatus and system |
| CN116927725A (en) * | 2023-09-15 | 2023-10-24 | 新疆坤隆石油装备有限公司 | Underground special oil pump oil extraction system with scale prevention and wax control functions |
-
2014
- 2014-07-09 CN CN201420374755.3U patent/CN203961911U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266160A (en) * | 2018-04-16 | 2018-07-10 | 陕西明特石油技术有限公司 | A kind of anti-corrosion, scale-inhibiting wax-proofing apparatus and system |
| CN116927725A (en) * | 2023-09-15 | 2023-10-24 | 新疆坤隆石油装备有限公司 | Underground special oil pump oil extraction system with scale prevention and wax control functions |
| CN116927725B (en) * | 2023-09-15 | 2024-02-13 | 新疆坤隆石油装备有限公司 | Underground special oil pump oil extraction system with scale prevention and wax control functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20190709 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |