CN201236682Y - Switching type sand-prevention screening tube - Google Patents
Switching type sand-prevention screening tube Download PDFInfo
- Publication number
- CN201236682Y CN201236682Y CNU2008200258511U CN200820025851U CN201236682Y CN 201236682 Y CN201236682 Y CN 201236682Y CN U2008200258511 U CNU2008200258511 U CN U2008200258511U CN 200820025851 U CN200820025851 U CN 200820025851U CN 201236682 Y CN201236682 Y CN 201236682Y
- Authority
- CN
- China
- Prior art keywords
- switch
- program
- sand
- hydraulic pressure
- sand control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012216 screening Methods 0.000 title claims description 14
- 239000004576 sand Substances 0.000 claims abstract description 68
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000004080 punching Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims 1
- 239000003129 oil well Substances 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 abstract 5
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000011241 protective layer Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a switch-type sand control sieve tube capable of controlling the flowing of oil layer liquid into a sand control pipe. The technical proposal adopted by the utility model is as follows: a sand control sieve tube (II) mainly comprises a sand blocking filter layer, an outer protective layer, a perforation sieve tube center tube, an upper joint coupling and a lower joint B; the upper end of the perforation sieve tube center tube is connected with the upper joint coupling, and the lower end thereof is connected with the lower joint B; a hydraulic sequence switch I and a mechanical switch III are movably connected with two ends or the middle of the sand control sieve tube (II); a concentric pressure bearing tube is mounted inside the perforation sieve tube center tube of the sand control sieve tube (II); a liquid flow passage is reserved between the perforation sieve tube center tube and the concentric pressure bearing tube; and an overflow passage is controlled by the hydraulic sequence switch and the mechanical switch (III) which are mounted on the sand control sieve tube. The utility model has the beneficial effects of conveniently realizing the closure and opening of an oil layer, thereby realizing production by closing a high water bearing layer section while opening a lower water bearing layer section; and preventing the frequency of well repairing operation from increasing, thereby increasing the utilization ratio of the oil well.
Description
One, technical field:
The utility model relates to a kind of oil well sand control screen, and particularly a kind of oil reservoir liquid of can controlling flows into the interior switch type sand-prevention screening tube of anti-sandpipe.
Two, background technology:
Existing sand control screen mainly is made up of sand block filtration beds, external protection, perforating type screen base pipe and top connection box cupling, lower contact.Present existing metal wrapping wire is prevented sandpipe, metal wool sand screen; Accurate filter net type sand screen; The metal felt sand screen, the pre-filling sand screen of double-deck wrapping wire; The sand in coating phenolic resin sand screen; Pottery sand screens etc. all are this forms.More than various sand control screens be installed in the oil well and shake out fluid producing layer at once; the output liquid of oil well is under the effect of oil well production pressure reduction; flow through external protection eyelet, sand block filtration beds micropore (seam), the perforating type screen base pipe of sand control screen; screen base pipe is up to be given rise to ground by the lifting pump in the oil well along punching to enter sand control screen inside; sand grains in the produced liquid in oil well is by the outside of the sand block filtration beds of sand control screen retaining at sand control screen; make in the oil well not contained sand grains in the liquid in the lifting, thereby realized the sand control of oil well.
But, existing sand control screen is when multiple zone sand control or long well section sand control, can not layering or the flowing of segmentation control output liquid, can not realize producing a period of time, the moisture rising of produced liquid in oil well behind the sand control of layering or segmentation production, particularly oil well, not carrying out the workover treatment test can't find output water layer (or section) can't close output water layer (or section), make oil well production economic benefit variation like this,, cause the increase of operation number of times, expense height, the utilization rate of oil wells low until workover treatment.
Three, utility model content:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, a kind of switch type sand-prevention screening tube is provided, can in the oil well normal productive process, find output water layer (or section) easily and close high aquifer (or section), only low aquifer (section) be produced.
Its technical scheme is: mainly by the sand block filtration beds; external protection; perforating type screen base pipe and top connection box cupling; lower contact B forms sand control screen (II); punching screen base pipe upper end is connected on the top connection box cupling; the lower end connects lower contact B; two ends or intermediate active at sand control screen (II) connect hydraulic pressure program switch (I) and mechanical switch (III); concentric pressure-bearing pipe is installed in the perforating type screen base pipe of described sand control screen (II); leave fluid course between perforating type screen base pipe and the concentric pressure-bearing pipe; hydraulic pressure program switch and mechanical switch (III) that flow channels is installed on the sand control screen are controlled; mechanical switch (III) is opened back liquid and can be flowed into or the outflow oil reservoir by the sand block filtration beds on the sand control screen, closes the back and provides confined space for the hydraulic pressure program switch.
Above-mentioned hydraulic pressure program switch (I) mainly is made up of top connection, seal operation tube, upper piston, steel ball, single current valve body, program orbit centre pipe, track pin, spring and lower contact, the inside and outside program orbit centre pipe and the seal operation tube of flexibly connecting respectively of top connection, and the composition confined space, realize the sealing of hole D or open; Upper piston and single current valve body are connected as a single entity, and form the single current piston, and steel ball is installed in the liquid flow hole that is used in the ball seat of single current valve inner in the shutoff single current valve body, forms the single current piston.
Above-mentioned single current piston is connected as a single entity with the track pin that is fixed in the program track by change and retainer ring, spring is installed in the lower end of retainer ring, promote the single current piston and move upward, be threaded on the box cupling on the program orbit centre pipe, bear the elastic force of spring.
Above-mentioned concentric pressure-bearing pipe upwards leads to the bottom of the single current valve body of hydraulic pressure program switch (I) with the annular space that the punching screen base pipe forms; lead to the sealing shroud of mechanical switch (III) and the annular space that switch body constitutes downwards, the formation fluid of external protection, sand block filtration beds and perforating type screen base pipe by sand control screen (II) is controlled by the sliding sleeve of the single current piston of the hydraulic pressure program switch (I) on top and bottom mechanical switch (III).
Above-mentioned mechanical switch (III) is mainly by switch body, sliding sleeve, sealing shroud, transit joint is formed up and down, the two ends of sealing shroud are connected with the lower seal joint with lower contact B respectively, the two ends of switch body flexibly connect with transit joint up and down respectively, switch body is provided with the C hole, sealing shroud and switch body looping space, slide in the switch body and can slide up and down, make sliding sleeve can seal or open the C hole, seal or open the passage that oil reservoir liquid flows out ground and ground fluid inflow oil reservoir.
Above-mentioned following transit joint is connected as a single entity switch body by screw thread with dying for the sake of honour, the lower seal joint is by screw thread and sealing shroud and dead stifled being connected as a single entity, sliding sleeve retracts original position and closes the C hole again, the cut-out fluid enters the passage of oil reservoir, make inner formation of sand control screen (II) hold the interior closed chamber of pressing, thereby the hydraulic pressure program switch is implemented to open and close operation.
Above-mentioned program orbit centre pipe is provided with a plurality of track points (E, K, M, W) and (X, G, L, Y), opening and closing of hydraulic pressure program switch (I) is subjected to upper piston to be positioned at the determining positions of program orbit centre Guan Shangkong D, track pin is when track point E, the K of program central tube, M, W, upper piston is positioned at the top of hole D, steel ball top is relative with the D hole, and the hydraulic pressure program switch is in the open mode oil reservoir and can produces; Track pin is at program track X, G, and L, during the Y point, upper piston is positioned at the below in D hole, and steel ball top is shut by upper piston and program orbit centre pipe, and the hydraulic pressure program switch is in closed condition, and corresponding oil reservoir is closed.
Operating principle of the present utility model is: after switch type sand-prevention screening tube layering of the present utility model is installed in the oil well; the reservoir fluid of each layer is by outer protection tube, the sand block filtration beds of respective layer; enter the annular space of perforating type screen base pipe and concentric pressure-bearing pipe, be communicated with the feed liquor annular space of hydraulic pressure program switch and mechanical switch.Mechanical switch is a normally closed switch, generally by add hydraulic pressure in well the single current piston position of hydraulic pressure program switch is changed, and realizes opening or sealing a certain reservoir fluid.Thereby be implemented in layer production of changing in the normal productive process.Have only when needs and in oil reservoir, during squeeze note liquid, in oil reservoir, clamp-on treatment fluid behind the following TO mechanical switch, close mechanical switch again after construction is finished, unidirectional airtight condition is provided for the action of hydraulic pressure program switch.
The beneficial effects of the utility model are: the produced liquid in oil well after filtering by the sand block layer cooperates control with hydraulic pressure program switch and mechanical switch, the sealing that just can realize oil reservoir easily with open, thereby realize closing the purpose that low aquifer (section) production is opened in high aquifer (section); Avoid the increase of workover treatment number of times, improved the production economic benefit of oil well, the utilization rate of oil well is improved greatly.
Four, description of drawings:
Accompanying drawing 2 is longitudinal sectional drawings of sand control screen II of the present utility model;
Accompanying drawing 4 is schematic diagrames of program track of the present utility model.
Among the last figure: top connection (1); seal operation tube (2); upper piston (3); steel ball (4); single current valve body (5); program orbit centre pipe (6); change (7); track pin (8); program orbit centre pipe (9); spring (10) box cupling (11); concentric pressure-bearing pipe (12); lower contact (13); top connection box cupling (14); perforating type screen base pipe (15); sand block filtration beds (16); external protection (17); lower contact B (18); last transit joint (19); switch body (20); sliding sleeve (21); sealing shroud (22); following transit joint (23); die for the sake of honour (24); lower seal joint (25); dead stifled (26).
Five, the specific embodiment:
1-3 in conjunction with the accompanying drawings; the utility model will be further described: mainly by the sand block filtration beds; external protection; perforating type screen base pipe and top connection box cupling; lower contact B forms sand control screen II; punching screen base pipe upper end is connected on the top connection box cupling; the lower end connects lower contact B; two ends or intermediate active at sand control screen II connect hydraulic pressure program switch I and mechanical switch III; concentric pressure-bearing pipe is installed in the perforating type screen base pipe of described sand control screen II; leave fluid course between perforating type screen base pipe and the concentric pressure-bearing pipe; hydraulic pressure program switch and mechanical switch III that flow channels is installed on the sand control screen control; mechanical switch III opens back liquid and can flow into or the outflow oil reservoir by the filtration beds on the sand control screen, closes the back and provides confined space for the hydraulic pressure program switch.
Wherein, hydraulic pressure program switch I mainly is made up of top connection 1, seal operation tube 2, upper piston 3, steel ball 4, single current valve body 5, program orbit centre pipe 6, change 7, track pin 8, program orbit centre pipe 9, spring 10 and box cupling 11, inside and outside the linker orbit centre pipe 9 and the seal operation tube 2 respectively of top connection 1, and the composition confined space, realize the sealing of hole D or open; Upper piston 3 and single current valve body 5 are connected as a single entity, and form the single current piston, and steel ball 4 is installed in the liquid flow hole that is used in the ball seat of single current valve body 5 inside in the shutoff single current valve body 5, forms the single current piston.The single current piston is connected as a single entity with the track pin 8 that is fixed in the program track by change 7 and retainer ring 9, spring 10 is installed in the lower end of retainer ring 9, promote the single current piston and move upward, be threaded on the box cupling 11 on the program orbit centre pipe 6, bear the elastic force of spring 10.
And mechanical switch III is mainly by switch body 20, sliding sleeve 21, sealing shroud 22, transit joint 19,23 is formed up and down, the two ends of sealing shroud 22 are connected with lower seal joint 25 with lower contact B18 respectively, the two ends of switch body 20 flexibly connect with transit joint up and down 19,23 respectively, switch body 20 is provided with the C hole, sealing shroud 22 and switch body 20 looping spaces, sliding sleeve 26 can slide up and down in switch body, make sliding sleeve 26 can seal or open the C hole, seal or open the passage that oil reservoir liquid flows out ground and ground fluid inflow oil reservoir.
With reference to Fig. 1, hydraulic pressure program switch I is connected on the tubing string by top connection 1, seal operation tube 2 is by being threaded in the top connection 1, play and hang bottom tubing string weight, form confined spaces with upper piston 3 with the program orbit centre pipe 6 that is threaded in the top connection 1, realize the sealing of hole D or open.Upper piston 3 and single current valve body 5 usefulness screw threads are connected as a single entity, form the way flow piston, steel ball 4 is installed in the liquid flow hole that is used in the ball seat of single current valve body 5 inside in the shutoff single current valve body 5, form the single current piston, it is up that the liquid of only being permitted the single current valve body lower portion backs down steel ball, liquid that mustn't single current valve body top is descending, provides condition for building the pressure in the oil pipe.Track pin 8 is fixed in the program track by change 7 and retainer ring 9 and is connected as a single entity with the single current piston.Spring 10 is installed in the lower end of retainer ring 9, promotes the single current piston and moves upward.Be threaded on the box cupling 11 on the program orbit centre pipe 6; bear the elastic force of spring 10; 11 times screw threads of box cupling connect concentric pressure-bearing pipe 12; be threaded in be threaded for the 2 times top connection box cupling 14 of sand control screen II of seal operation tube in the lower contact 13; be threaded on the top connection box cupling 14 on the punching screen base pipe 15; under the lower contact B18 that is threaded; pressure-bearing pipe 12 upwards leads to the bottom of the single current valve body 5 of hydraulic pressure program switch I with the annular space that punching screen base pipe 15 forms with one heart; lead to the sealing shroud 22 and the annular space that switch body 20 constitutes of mechanical switch III downwards, make external protection 17 by sand control screen II; sand block filtration beds 16; the formation fluid of perforating type screen base pipe 15 is by sliding sleeve 21 controls of the single current piston of the hydraulic pressure program switch on top and bottom mechanical switch instrument.Last transit joint 19 is connected as a single entity concentric pressure-bearing pipe 12 and switch body 20 by screw thread; sliding sleeve 21 can slide up and down under the effect of certain steering mechanical power in switch body; shown position sliding sleeve 21 sealing C holes; sealed the passage that oil reservoir liquid outflow ground and ground fluid flow into oil reservoir; reservoir fluid can flow into concentric pressure-bearing pipe by external protection 17, sand block filtration beds 16, perforating type screen base pipe 15 and be given rise to ground when expose in 21 times enforcements of sliding sleeve C hole, and ground liquids also can enter oil reservoir by sand block filtration beds 16 through the C hole.Following transit joint 23 by screw thread with switch body 20 with die for the sake of honour and 24 be connected as a single entity, lower seal joint 25 by screw thread with sealing shroud 22 with extremely block up 26 and be connected as a single entity.Sliding sleeve 21 retracts original position and closes the C hole again, cuts off the passage that fluid enters oil reservoir, makes inner formation of switch type sand-prevention screening tube hold the interior closed chamber of pressing, so that adopt the mode of hydraulic pressure that the hydraulic pressure program switch is implemented to open and close operation.
With reference to accompanying drawing 2, the employing of opening and close of the hydraulic pressure program switch I of going up of the present utility model finishes for the inner mode of beating hydraulic pressure of switch type sand-prevention screening tube by top connection 1.Opening and closing of hydraulic pressure program switch I is subjected to upper piston 5 to be positioned at the determining positions of hole D on the program orbit centre pipe 9, track pin 11 is when program track E, K, M, W point, upper piston 5 is positioned at the top in D hole, steel ball 6 tops are relative with the D hole, and the hydraulic pressure program switch is in the open mode oil reservoir and can produces; Track pin 11 is at program track X, G, and L, during the Y point, upper piston 5 is positioned at below steel ball 6 tops in D hole to be shut by upper piston 5 and program orbit centre pipe, and the hydraulic pressure program switch is in closed condition, and corresponding oil reservoir is closed.
And the hydraulic pressure program switch shown in the accompanying drawing 1 is in open mode; it is up with the annular space that perforating type screen base pipe 15 forms that stratum output liquid enters concentric pressure-bearing pipe 12 through the external protection 17 of sand control screen II and the eyelet on the sand block filtration beds 16, backs down steel ball 4 and enter instrument inner chamber A by the D hole and caused ground by lifting.When needs sealing oil reservoir, in the A chamber, beat hydraulic pressure, hydraulic coupling acts on the downward active force of formation on the single current piston by pressure transmission hole, active force is during greater than the elastic force of spring, the single current descent of piston, arrive track bottom dead centre F up to track pin 8, the single current piston can not continue descending, the fluid course sealing that upper piston 3 will lead to the A chamber in the bottom in D hole this moment, when oil well production, the pressure in the A chamber descends, the power that acts on the single current piston diminishes, spring promotes the single current piston stroking upward, and it is up that track pin 8 can not continue the single current piston along track arrival G, and following sealing fluid can not enter the outflow that A has sealed oil reservoir liquid by force thereby upper piston 3 is still in the D hole.If need reopen this oil reservoir the time, again after the A chamber is beaten hydraulic pressure and made track pin 8 arrive H, opening well and making production makes track pin 8 enter K along track again, and upper piston 3 arrives on the D holes, and reservoir fluid backs down steel ball 4 and enters the A chamber and given rise to ground.
Claims (7)
1; a kind of switch type sand-prevention screening tube; mainly by sand block filtration beds (16); external protection (17); perforating type screen base pipe (15) and top connection box cupling (14); lower contact B (18) forms sand control screen (II); punching screen base pipe (15) upper end is connected on the top connection box cupling (14); the lower end connects lower contact B (18); it is characterized in that: two ends or intermediate active at sand control screen (II) connect hydraulic pressure program switch (I) and mechanical switch (III); concentric pressure-bearing pipe (12) is installed in the perforating type screen base pipe (15) of described sand control screen (II); leave fluid course between perforating type screen base pipe (15) and the concentric pressure-bearing pipe (12); hydraulic pressure program switch (I) and mechanical switch (III) that flow channels is installed on the sand control screen are controlled; mechanical switch (III) is opened back liquid and can be flowed into or the outflow oil reservoir by the sand block filtration beds (16) on the sand control screen, closes the back and provides confined space for the hydraulic pressure program switch.
2, switch type sand-prevention screening tube according to claim 1, it is characterized in that: described hydraulic pressure program switch (I) mainly is made up of top connection (1), seal operation tube (2), upper piston (3), steel ball (4), single current valve body (5), program orbit centre pipe (6), track pin (8), spring (10) and lower contact (13), the inside and outside program orbit centre pipe (9) and the seal operation tube (2) of flexibly connecting respectively of top connection (1), and the composition confined space, realize the sealing of hole D or open; Upper piston (3) and single current valve body (5) are connected as a single entity, and form the single current piston, and steel ball (4) is installed in the liquid flow hole that is used in the inner ball seat of single current valve body (5) in the shutoff single current valve body (5), forms the single current piston.
3, switch type sand-prevention screening tube according to claim 2, it is characterized in that: described single current piston be fixed on the interior track pin (8) of program track by change (7) and retainer ring (9) and be connected as a single entity, spring (10) is installed in the lower end of retainer ring (9), promoting the single current piston moves upward, be threaded on the box cupling (11) on the program orbit centre pipe (6), bear the elastic force of spring (10).
4; switch type sand-prevention screening tube according to claim 1; it is characterized in that: described concentric pressure-bearing pipe (12) upwards leads to the bottom of the single current valve body (5) of hydraulic pressure program switch (I) with the annular space that punching screen base pipe (15) forms; lead to the sealing shroud (22) and the annular space that switch body (20) constitutes of mechanical switch (III) downwards, make external protection (17) by sand control screen (1I); the formation fluid of sand block filtration beds (16) and perforating type screen base pipe (15) is controlled by the sliding sleeve (21) of the single current piston of the hydraulic pressure program switch (I) on top and bottom mechanical switch (III).
5, according to claim 1 or 4 described switch type sand-prevention screening tubes, it is characterized in that: described mechanical switch (III) is mainly by switch body (20), sliding sleeve (21), sealing shroud (22), transit joint (19 up and down, 23) form, the two ends of sealing shroud (22) are connected with lower seal joint (25) with lower contact B (18) respectively, the two ends of switch body (20) respectively with transit joint (19 up and down, 23) flexibly connect, switch body (20) is provided with the C hole, sealing shroud (22) and switch body (20) looping space, sliding sleeve (26) can slide up and down in switch body, make sliding sleeve (26) can seal or open the C hole, seal or open the passage that oil reservoir liquid flows out ground and ground fluid inflow oil reservoir.
6, switch type sand-prevention screening tube according to claim 5, it is characterized in that: described transit joint (23) down is connected as a single entity switch body (20) and die for the sake of honour (24) by screw thread, lower seal joint (25) is connected as a single entity by screw thread and sealing shroud (22) and dead stifled (26), sliding sleeve (21) retracts original position and closes the C hole again, the cut-out fluid enters the passage of oil reservoir, make inner formation of sand control screen (II) hold the interior closed chamber of pressing, thereby the hydraulic pressure program switch is implemented to open and close operation.
7, switch type sand-prevention screening tube according to claim 2, it is characterized in that: described program orbit centre pipe (6) is provided with a plurality of track points (E, K, M, W) and (X, G, L, Y), opening and closing of hydraulic pressure program switch (I) is subjected to upper piston (3) to be positioned at the determining positions that program orbit centre pipe (6) is gone up hole D, track pin (8) is when the track point (E, K, M, W) of program central tube, upper piston (3) is positioned at the top of hole D, steel ball (4) top is relative with the D hole, and the hydraulic pressure program switch is in the open mode oil reservoir and can produces; Track pin (8) the program track (X, G, L, in Y) when point, upper piston (3) is positioned at the below in D hole, steel ball (4) top is shut by upper piston (3) and program orbit centre pipe, the hydraulic pressure program switch is in closed condition, corresponding oil reservoir is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200258511U CN201236682Y (en) | 2008-07-19 | 2008-07-19 | Switching type sand-prevention screening tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200258511U CN201236682Y (en) | 2008-07-19 | 2008-07-19 | Switching type sand-prevention screening tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201236682Y true CN201236682Y (en) | 2009-05-13 |
Family
ID=40649421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200258511U Expired - Fee Related CN201236682Y (en) | 2008-07-19 | 2008-07-19 | Switching type sand-prevention screening tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201236682Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949278A (en) * | 2010-09-21 | 2011-01-19 | 佛山市顺德区精艺动力科技有限公司 | Protector of underground oil extraction machine |
| CN101328794B (en) * | 2008-07-19 | 2012-04-18 | 东营天华石油技术开发有限公司 | Switch type sand-prevention screening tube |
| CN105840163A (en) * | 2015-01-15 | 2016-08-10 | 深圳市百勤石油技术有限公司 | Ball seat assembly and ball sliding sleeve type fracturing device |
-
2008
- 2008-07-19 CN CNU2008200258511U patent/CN201236682Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101328794B (en) * | 2008-07-19 | 2012-04-18 | 东营天华石油技术开发有限公司 | Switch type sand-prevention screening tube |
| CN101949278A (en) * | 2010-09-21 | 2011-01-19 | 佛山市顺德区精艺动力科技有限公司 | Protector of underground oil extraction machine |
| CN105840163A (en) * | 2015-01-15 | 2016-08-10 | 深圳市百勤石油技术有限公司 | Ball seat assembly and ball sliding sleeve type fracturing device |
| CN105840163B (en) * | 2015-01-15 | 2019-03-12 | 深圳市百勤石油技术有限公司 | Ball seat assembly and ball-throwing sliding sleeve type fracturing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101328794B (en) | Switch type sand-prevention screening tube | |
| CN105604525A (en) | Multi-stage plunger gas lift device and process for combined pipe column | |
| CN108386160A (en) | Blockage removal type sand prevention pipe column structure capable of flushing lower sieve pipe of pump | |
| CN201236682Y (en) | Switching type sand-prevention screening tube | |
| CN106837294A (en) | Super-hydrophobic downhole separation system and its single-well injection-production process pipe string | |
| CN201711034U (en) | Backwash filter | |
| CN201358754Y (en) | Horizontal well hydraulic layer-change switch | |
| CN208669292U (en) | New multistage sand control air trap device | |
| CN111236918B (en) | Rock salt mine separate-layer mining pipe column and rock salt mine separate-layer mining method | |
| CN203515522U (en) | Oil nozzle type oil well output liquid control device | |
| CN201953625U (en) | Separate pumping and combined production oil pump | |
| CN108533234A (en) | Horizontal well fixed tubular column sublevel fill stoping and kit | |
| CN111706304B (en) | Filling tool with reverse circulation function | |
| CN206522126U (en) | A kind of sand filter of oil production well | |
| CN201513154U (en) | Water distribution packer, setting core and water distribution core | |
| RU108506U1 (en) | BILATERAL WELL PUMP PUMP | |
| CN2718257Y (en) | Inforced double-runner oil producing device by layer | |
| CN203146288U (en) | Lateral flow backwashing soft sealing solid plunger pump | |
| CN1327105C (en) | Zonal water injection contanst flow packer | |
| CN209539339U (en) | Diplopore small pressure difference antireflux eccentric injection mandrel | |
| CN2763488Y (en) | Constant flow packer for separated-zone water injection | |
| CN207229076U (en) | Automatic fluid control device | |
| CN202273661U (en) | Ultralow leaching well multi-layer commingled production controller | |
| CN2306312Y (en) | Well washing valve | |
| CN206554869U (en) | Salvagable well-flushing bottom sieve is blocked up |
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: 20090513 Termination date: 20100719 |