CN2688873Y - High-strength boxed stainless steel netting filter of well top - Google Patents
High-strength boxed stainless steel netting filter of well top Download PDFInfo
- Publication number
- CN2688873Y CN2688873Y CN 200420031158 CN200420031158U CN2688873Y CN 2688873 Y CN2688873 Y CN 2688873Y CN 200420031158 CN200420031158 CN 200420031158 CN 200420031158 U CN200420031158 U CN 200420031158U CN 2688873 Y CN2688873 Y CN 2688873Y
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- boxing
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- oil
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Abstract
The utility model relates to the high-strength boxing stainless steel netting cylinder filter of a well mouth, which belongs to the filter device classes of sand prevention and edulcoration for the earth surface of the polymer displacement oil well and the water injection well of oil field for oil extraction. At present, an oil well takes measures of flooding or poly drive to realize the target of increase in yield of well yield. Owing to argillaceous silt in water or polymers does harm to the permeability of the rock formations of the oil well, the prior art adopts sand control screens and filter screen devices to clean up influence, but the effect is not good; while in use, owing to sand plug and the damage of devices, the prior art has no filtration, and the cost is increased because of well flushing, which affects oil production rate. Thus, the device adopts tubing pup joints to be supporting tubes, and the tube walls of the tubing pup joints are provided with eyelets. The exterior tube walls of the supporting tubes are sheathed with the boxing stainless steel netting cylinders. While in use, the supporting tubes has the features of pressurization, big overflowing and good penetrating quality. The utility model has the advantages of simple structure and long busy period; filter tubes are exchanged, and meanwhile remnants on tube walls of sleeve tubes are cleaned up, which shortens demounting and installing time. Thus, the high-strength boxing stainless steel netting cylinder filter of the well mouth can be widely used for filtering the argillaceous silt and impurities in the polymer displacement oil wells and flooding wells.
Description
Technical field:
The utility model relates to a kind of well head high strength boxing stainless (steel) wire tube strainer, belongs to oil field oil recovery polymer displacement oil well, water injection well ground sand control removal of impurities filter class.
Background technology:
Water drive or the poly-method of driving are adopted for increasing the oil well crude output in the oil field more, to reach the oil reservoir supercharging crude oil are driven to around the oil well, and this behave water drive or the poly-water in the process and the silt particle in the polymer and impurity of driving bring influence for the subterranean strata permeability.Oil reservoir oil impregnate duct is stopped up, caused water drive or poly-driving to fall flat.At above-mentioned situation, traditional technology all adopts the method for sand control screen down-hole sand control to go to solve, and can obtain certain effect, when still constructing, often because of sand plug need carry out well-flushing or operation, can increase because of its cost.Stop annotating the direct crude output that influences because of well-flushing or job execution time are long.In addition, also have a kind of well head filter screen device, it uses the stainless steel window screening that adopts 1 mm dia, and multi-lay winding is placed in the well head on tiny skeleton, but because Material Strength is low excessively, and area of passage is little, filters the unequal reason of eyelet size, and be eliminated.
The utility model content:
Order of the present utility model is a kind of well head high strength boxing stainless (steel) wire tube strainer that provides in order to overcome above-mentioned shortcoming, silt particle and impurity that this strainer can make oil field polymer displacement oil well and water injection well infusion carry are eliminated at the ground pithead position at an easy rate, can substitute well sandscreen fully, overcome existing technical operation cost height, and because of stopping annotating the drawback that influences crude output during operation or the well-flushing.
The utility model implementation is:
It is as overcoat by oil well casing.The overcoat left end is to take over the welded flange sealing that communicates with fluid, and right-hand member then seals with the high pressure sealing flange.Jacket bottom has feed liquor to take over.
Be equipped with a boxing stainless (steel) wire tube assembly in the overcoat, assembly be by a 73mm oil pipe as support be drilled with 300 on the pipe nipple (abbreviation parent tube) surplus a flowing hole, right-hand member is welded on the seal nipple axle center that is welded with rear position plate and elasticity spacer, left end and the sealing of stainless steel boxing net tube front connector inwall inclined-plane.Stainless steel boxing sleeve be to use equipment take the high-tech solder technology with the stainless steel wire of special cross-section (it is optional at 1.6～2.2 millimeters that the cross section is " V " type) boxing equivalent material along axis direction 20 surplus on the support rod.The slit is selected between 0.15～0.5 millimeter as required.Net tube left end is by inclined-plane hypotenuse and welded flange sealing, and right-hand member seals with the right side sealing joint, and firmly fixing stainless (steel) wire tube assembly with elasticity spacer top blind flange.Before and after location-plate promptly set upright and wall effect clearly arranged, and the handle of elasticity spacer when then playing crosswise fixed and can unload stainless steel boxing net tube assembly.
The utility model is compared with existing technology, has distinguishing feature:
Because this utility model adopted high strength boxing stainless (steel) wire tube filter, be installed in the ground pithead position, by the flange demolition, it is convenient and swift to change stainless steel boxing net tube assembly, and moment finishes, and the down-hole sand control is got the sand sieve pipe of relieving a garrison and is needed operation.Since have in the stainless net of the boxing tube assembly 73 oil pipes support pipe nipple make a call to 300 surplus flowing hole, outer cover is in boxing stainless (steel) wire tube, boxing stainless (steel) wire tube internal diameter and oil pipe crest clearance are 1mm, since boxing stainless (steel) wire tube 20 surplus a support rod from an oil-pipe external wall 1mm, making its intensity is several 10 times of window screening wound form strainer intensity.In addition during fabrication stainless steel wire through inside and outside chamfered, inside and outside sealing omits flare after the boxing, its seepage flow is splendid, because boxing stainless (steel) wire kerf spacing only between 1.6～2.2 millimeters, is calculated its area of passage and be 4.5 times along joint-cutting sand control screen area of passage.
The front and back location-plate has promptly risen sets upright positioning action, can play wall effect clearly again when taking out stainless steel boxing net tube assembly.
Description of drawings:
Figure is the utility model structural representation.
The specific embodiment:
The utility model is provided by following examples.
Below in conjunction with accompanying drawing the utility model is illustrated.
Among the figure by: 1, fluid is taken over, 2, welded flange, 3, the prelocalization plate, 4, overcoat, 5 filter assemblies, 6, bolt, 7, the concavity flange, 8, joint ring, 9, rear position plate, 10, boss flange, 11 elasticity spacers, 12, feed liquor takes over and form.
Among the figure, filter pipe 5 supports pipe nipple by boxing stainless (steel) wire tube and inner 73 millimeters oil pipes and forms.Boxing stainless (steel) wire tube be to use special equipment take solder technology with the stainless steel wire of cross section (V-type) and equivalent material 20 surplus the support rod boxing of an axis direction form.The slit is selected for use between 0.15～0.5 millimeter, and kerf spacing is 1.6～2.2 millimeters.So promptly strengthen the intensity of filtering net cylinder, increased the area of passage of filtering net cylinder again.And the steel wire in special cross section is through inside and outside chamfered, so inside and outside sealing flare slightly after the boxing, so filter pipe seepage flow is splendid.
Overcoat 4 is one 5.5 cun sleeve pipes, and the overcoat left end is to seal to take over the welded flange that communicates with fluid, and then with the high pressure flange sealing, jacket bottom leaves feed liquor and takes over right-hand member, and stainless steel boxing filter pipe assembly is adorned within it.
Prelocalization plate 3 is welded in the front connector of boxing stainless (steel) wire tube, and the first half has two air vents, and the prelocalization plate can be set upright the location can remove the outer casing inner wall residue again in unloading process.
Rear position plate 9 is welded on the net socket joint head, rises to set upright positioning action, and is porose and be welded with elasticity spacer 11 on the rear position plate, makes the stainless (steel) wire tube laterally firmly fixing after the elasticity spacer is compressed by blind flange, and is used as handle when changing the filter pipe assembly unloading.
Right side boss flange 10 seals the overcoat right-hand member with bolt 6 with recessed flange 11 pressurization rings 8 backs.
This reality has novel working method to be:
During use enterprising drain pipe of overcoat and well head liquid in-out pipe are welded.Welding finishes to open liquid valve, closes eduction valve, opens the feed liquor valve, and well head filters beginning.Close the feed liquor valve when changing the filter pipe assembly earlier, open discharge orifice (should close liquid valve for preventing to backflow) if strata pressure is high, treat that the nut of backing out bolt 6 after raffinate is put only takes off boss flange 10, after pulling elasticity spacer taking-up filter pipe assembly, with the cleaning the filter pipe assembly pack into the cover in, boss flange 10 is tighted a bolt, close discharge orifice and open the feed liquor valve, inject beginning.Can finish the utility model proposes of task.
Claims (3)
1, a kind of well head high strength boxing stainless (steel) wire tube strainer, be be overcoat (4) at the overcoat left end by oil well casing to be to take over the welded flange (2) that (1) communicates with fluid, right-hand member then seals with high pressure flange, jacket bottom has feed liquor to take over (12), filter pipe assembly (5) is arranged in the overcoat, it is characterized in that: described filter pipe (5) is as supporting pipe nipple by a 73mm oil pipe, be drilled with several flowing holes on the pipe nipple, the pipe nipple right-hand member is welded on the net socket joint head inner axes that is welded with rear position plate (9) and retainer spring sheet (11), support pipe nipple and be with a boxing stainless (steel) wire tube outward, support pipe nipple left end and the interior inclined-plane sealing of net tube left end joint, boxing stainless (steel) wire tube be by stainless steel wire (V-type cross section) boxing the axis direction equivalent material 20 surplus on the support rod, left end miter joint of filter pipe assembly and the sealing of welded flange (2) endoporus, right-hand member withstands boss flange (10) crosswise fixed with net tube right-hand member joint sealing and with elasticity spacer (11), filtering assembly (5) left end has prelocalization plate (3), and rear position plate (9) is welded with elasticity spacer (11) on it.
2, according to the described a kind of well head high strength boxing stainless (steel) wire tube strainer of claim 1; It is characterized in that: described filter pipe assembly (5) skin be boxing along the circumferential direction with the equivalent material of axis direction traveling 20 surplus the stainless (steel) wire tube of a rib, the stainless steel wire cross section is between 1.6～2.2 millimeters, V-shaped, welding back steel wire kerf spacing is between 1.6～2.2 millimeters, and the slit is selected between 0.15～0.5 millimeter.
3, according to the described a kind of well head high strength boxing stainless (steel) wire tube strainer of claim 1; It is characterized in that: be welded with elasticity spacer (11) on prelocalization plate (3), the rear position plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031158 CN2688873Y (en) | 2004-04-10 | 2004-04-10 | High-strength boxed stainless steel netting filter of well top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420031158 CN2688873Y (en) | 2004-04-10 | 2004-04-10 | High-strength boxed stainless steel netting filter of well top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2688873Y true CN2688873Y (en) | 2005-03-30 |
Family
ID=34670556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420031158 Expired - Fee Related CN2688873Y (en) | 2004-04-10 | 2004-04-10 | High-strength boxed stainless steel netting filter of well top |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2688873Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883585A (en) * | 2017-11-06 | 2018-04-06 | 湖南湘讯企业管理有限公司 | A kind of low-loss electromagnetic heater of eddy flow purification type |
| CN111729383A (en) * | 2020-06-19 | 2020-10-02 | 肖云东 | Water injection automatic filtration backwash device |
| CN115680604A (en) * | 2023-01-03 | 2023-02-03 | 胜利油田胜机石油装备有限公司 | Sand removing manifold system for oil well |
-
2004
- 2004-04-10 CN CN 200420031158 patent/CN2688873Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107883585A (en) * | 2017-11-06 | 2018-04-06 | 湖南湘讯企业管理有限公司 | A kind of low-loss electromagnetic heater of eddy flow purification type |
| CN111729383A (en) * | 2020-06-19 | 2020-10-02 | 肖云东 | Water injection automatic filtration backwash device |
| CN115680604A (en) * | 2023-01-03 | 2023-02-03 | 胜利油田胜机石油装备有限公司 | Sand removing manifold system for oil well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050330 |