CN2804377Y - Cup sliding-sleeve liquid-proof check valve - Google Patents
Cup sliding-sleeve liquid-proof check valve Download PDFInfo
- Publication number
- CN2804377Y CN2804377Y CN 200520021134 CN200520021134U CN2804377Y CN 2804377 Y CN2804377 Y CN 2804377Y CN 200520021134 CN200520021134 CN 200520021134 CN 200520021134 U CN200520021134 U CN 200520021134U CN 2804377 Y CN2804377 Y CN 2804377Y
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- CN
- China
- Prior art keywords
- main body
- sliding sleeve
- well
- leather cup
- rod
- 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
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Abstract
The utility model relates to a leather bowl type sliding-sleeve liquid-proof check valve, which is composed of an upper joint, a spring, a sliding sleeve, a leather bowl, a baffle ring, a through rod, a main body and a lower joint, wherein annular space is arranged between the upper joint and the main body, and the spring and the sliding sleeve are arranged in the annular space. The leather bowl is arranged on the inside of the sliding sleeve and the baffle ring is arranged on the lower part of the sliding sleeve. A side hole is arranged on the main body, and the middle part of the main body is provided with four oil inlet or water inlet passages. The middle part of the main body is connected with the lower part of the upper joint and the lower part is connected with the lower joint. The through rod is arranged in the four oil inlet or water inlet passages on the main body, and the upper part of the through rod is connected with the baffle ring by threads and the lower part is connected with the main body by a cutting off male pin. When used for an oil well, the leather bowl type sliding-sleeve liquid-proof check valve is connected to the lower part of a working barrel and is matched with a water blocking pipe column. Magnetic positioning can not be influenced, and thus underground workload can be reduced. When used for a water well, the leather bowl type sliding-sleeve liquid-proof check valve is connected to the lower part of a protecting packer (which is an eccentric water distributor of the lowest level) below a well completion pipe column of a water injection well, and thus the well can be back washed for a long term. When the sealing of the packer is not relieved, the utility model has the function of pressure relief, and the pipe column can be prevented from upwards propping.
Description
Technical field:
The utility model relates to a kind of downhole tool, specifically is the anti-liquid ball-and-seat of oil well or well employed a kind of complementary downhole tool-leather cup formula sliding sleeve in job execution and daily production.
Background technology:
In job execution and daily production, often a kind of ball-and-seat that uses is as complementary downhole tool.The ball-and-seat of former usefulness is made up of valve bonnet, valve ball and ball seat.Following in use the foot of this ball-and-seat at completion tubular column, at following completion tubular column, when testing envelope debugging and water filling, the dirty sheet that corrodes on booty in the tubing string or the tube inner wall deposits easily, the top of falling ball-and-seat blocks the inner surplus chamber of ball-and-seat, make it can't operate as normal, can not anti-flushing well, can cause whole tubing string actual effect for a long time.Big and the packer of back-pressure that serious is in the well operation in the well during deblocking, top phenomenon on the tubing string do not occur, causes down-hole accident.
Summary of the invention:
The purpose of this utility model is to provide a kind of leather cup formula sliding sleeve to prevent the liquid ball-and-seat at the problems referred to above
The utility model purpose is to be achieved by following technical proposals: it is made of the anti-liquid ball-and-seat of leather cup formula sliding sleeve top connection, spring, sliding sleeve, leather cup, shelves ring, through rod, main body and lower contact; Between top connection and the main body annular space is arranged, place spring, sliding sleeve in the annular space; Leather cup is placed on the inboard of sliding sleeve; Baffle ring is installed in the bottom of sliding sleeve; Have side opening on the main body, there are four oil-feeds or aquaporin in the middle part, and the middle part connects the bottom of top connection, and the bottom connects lower contact; Through rod is installed in four oil-feeds or aquaporin on the main body, and top is threaded with baffle ring, and the bottom is cut off pin and connected main body.
The anti-liquid ball-and-seat of leather cup formula sliding sleeve is avoided the sealing of ball and ball seat, but utilizes the principle of sliding sleeve and cup packing side opening to finish the single current sealing, gets out of the way central passage simultaneously, makes booty and dirty sheet fall into tail pipe by this instrument.The anti-liquid ball-and-seat of leather cup formula sliding sleeve is along with tubing string is gone into the well together when underground work, under the effect of pressure, the oil-feed or the aquaporin of this instrument are opened, utilize the up and down of sliding sleeve, finish the opening and closing of contralateral exposure by leather cup, thereby realize oil well pump that seating nipple is combined into it, and normally the carrying out of water injection well water filling and each procedure work of anti-flushing well in the down-hole operate as normal.At any time the blanking plug that all can throw, put is set in the bottom of the anti-liquid ball-and-seat of leather cup formula sliding sleeve simultaneously, and purpose is to satisfy the needs of different running strings.
The utlity model has following advantage and good effect: promptly can be used for well, also can be used for oil well.
1. when the utility model is used for oil well, connect bottom at seating nipple, replace original standing valve, constitute a complete oil well pump structure, direct union tail in its underpart, can blowout prevention, whole tubing string is communicated up and down, during following pipe in the tubing string if any booty, can directly fall into tail pipe, be unlikely to the seating nipple of oil well pump is blocked, guarantee piston operate as normal in seating nipple.When the utility model is used for oil well and water plugging string be used, do not influence magnetic location, reduce the underground work amount, only need after the success of giving up, the upper lifting pipe post drops into blanking plug from oil pipe and just can carry out next procedure during to pump setting depth.
2. when the utility model is used for well, this instrument is connected the bottom of protecting packer under the water injection well completion tubular column (or subordinate eccentric injection mandrel), at its underpart union tail.When the water injection well completion tubular column is gone into the well (or normal water filling), sliding sleeve and leather cup are closed side opening, thereby guarantee the sealing of its tubing string, when discharging packer, descending at the effect low sleeve of pressure, promote through rod and cut off pin, oil-feed or aquaporin are opened, when the well anti-flushing well, up at the effect low sleeve of pressure, side opening is opened, realized anti-flushing well.The utlity model has long-term not timing ground tubing string is carried out anti-flushing well, be unlikely to be blocked and whole tubing string was lost efficacy and cause advantage such as down-hole accident by foul and dirty sheet.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a structural representation in the utility model;
Fig. 3 is the structural representation of top connection in the utility model;
Fig. 4 is the structural representation of sliding sleeve in the utility model;
Fig. 5 is the structural representation of leather cup in the utility model;
Fig. 6 is the structural representation of main body in the utility model;
Fig. 7 is the structural representation of lower contact in the utility model;
Fig. 8 is the structural representation of the middle-grade ring of the utility model;
Fig. 9 is the structural representation of through rod in the utility model.
The specific embodiment:
Fig. 1 is an agent structure schematic diagram of the present utility model, also is the installment state structural representation when being used for oil well.The anti-liquid ball-and-seat of leather cup formula sliding sleeve is made of top connection 1, spring 2, sliding sleeve 3, leather cup 4, shelves ring 5, through rod 6, main body 7 and lower contact 9 among the figure.The bottom of top connection 1 is threaded the portion's slip within it of back formation sliding sleeve 3 and seals with main body 7 element, top connection 1 is connected with tubing string or other instrument, and the structure of top connection is referring to Fig. 3.Spring 2 is installed in the annular space between top connection 1 and the main body 7, and its effect is to promote sliding sleeve 3 to reset under the situation of no external force.Sliding sleeve 3 is installed in the annular space between top connection 1 and the main body 7, it specifically is the bottom that is contained in spring 2, its effect is up and down under the effect of pressure and spring 2, the gaging hole 10 that sliding sleeve 3 drives on the leather cup 4 up and down opening and closing main bodys, do not leak by the liquid in the whole tubing string of packing_seal in its outside packing groove simultaneously, the structure of sliding sleeve 3 is referring to Fig. 4.Leather cup 4 is in the inboard of sliding sleeve, and in sliding sleeve 3 was installed in annular space between top connection 1 and the main body 7, effect was the gaging hole 10 that opens and closes on the main body 7, and the structure of leather cup is referring to Fig. 5.Main body 7 middle parts link to each other with the bottom of top connection 1, gaging hole 10 is opened on main body 7, there are four oil-feeds or aquaporin 11 in the middle and lower part, the position is the corresponding access site that is communicated with oil sets annular space, the bottom of main body 7 connects lower contact 9, can prevent that through rod 6 from falling in the well, simultaneously by lower contact 9 union tails or other instrument, the structure of main body 7 is seen Fig. 6, and the structure of lower contact 9 is seen Fig. 7.Through rod 6 is installed in four oil-feeds or aquaporin on the main body 7, and at certain position, top is threaded with baffle ring 5 by dowel fixes.Through rod 6 is installed in before going into the well in four oil-feeds or aquaporin 11 on the main body 7, prevents that liquid from entering tubing string in oil-feed or aquaporin 11, plays sealing (anti-liquid) effect.When going into the well back release packer, descending at the effect low sleeve 3 of pressure, promotion through rod 6 is cut off pin and is opened oil-feed or aquaporin, realizes check action, and the concrete structure of through rod 6 is seen Fig. 9.Baffle ring 5 is installed in the annular space between top connection 1 and the main body 7, specifically is to be threaded with through rod 6 in the bottom of sliding sleeve 3, mainly is to be used to hang through rod 6, and the concrete structure of baffle ring 5 is seen Fig. 8.When release was given up, under the effect of pressure, sliding sleeve 3 was descending, oil-feed or aquaporin 11 are opened, and after the success of giving up, the upper lifting pipe post is to pump setting depth, again blanking plug 8 is dropped in the tubing string, finish the check action of tubing string, thereby guarantee that oil well pump is in the down-hole operate as normal.
Fig. 2 is an agent structure schematic diagram of the present utility model, also is the installment state structural representation when being used for well, wherein the same Fig. 1 of each component locations and connected mode.When the utility model is used for well, this instrument is connected the bottom of protecting packer under the water injection well completion tubular column (or subordinate eccentric injection mandrel), at its underpart union tail.When the well completion tubular column is gone into the well (or normal water filling), sliding sleeve and leather cup are closed side opening, thereby guarantee the sealing of its tubing string, when discharging packer, descending at the effect low sleeve of pressure, promote through rod and cut off pin, oil-feed or aquaporin are opened, when the well anti-flushing well, up at the effect low sleeve of pressure, side opening is opened, realized anti-flushing well.
Claims (3)
1, the anti-liquid ball-and-seat of a kind of leather cup formula sliding sleeve is characterized in that: it is made of top connection (1), spring (2), sliding sleeve (3), leather cup (4), shelves ring (5), through rod (6), main body (7) and lower contact (9); Between top connection (1) and the main body (7) annular space is arranged, place spring (2), sliding sleeve (3) in the annular space, leather cup (4) is placed on the inboard of sliding sleeve (3); Baffle ring (5) is installed in the bottom of sliding sleeve (3); Have side opening (10) on the main body (7), there are four oil-feeds or aquaporin (11) in the middle part, and the middle part connects the bottom of top connection (1), and the bottom connects lower contact (9); Through rod (6) is installed in four oil-feeds or aquaporin (11) on the main body (7), and top is threaded with baffle ring (5), and the bottom is cut off pin and is connected with main body (7).
2, the anti-liquid ball-and-seat of leather cup formula sliding sleeve according to claim 1, it is characterized in that: described sliding sleeve (3) drives the gaging hole (10) on leather cup (4) the up and down opening and closing main bodys (7).
3, the anti-liquid ball-and-seat of leather cup formula sliding sleeve according to claim 1 is characterized in that: be provided with blanking plug (8) in the bottom of the anti-liquid ball-and-seat of leather cup formula sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021134 CN2804377Y (en) | 2005-06-26 | 2005-06-26 | Cup sliding-sleeve liquid-proof check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520021134 CN2804377Y (en) | 2005-06-26 | 2005-06-26 | Cup sliding-sleeve liquid-proof check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2804377Y true CN2804377Y (en) | 2006-08-09 |
Family
ID=36909671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520021134 Expired - Fee Related CN2804377Y (en) | 2005-06-26 | 2005-06-26 | Cup sliding-sleeve liquid-proof check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2804377Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
| CN110821443A (en) * | 2018-08-09 | 2020-02-21 | 中国石油天然气股份有限公司 | RD valve perforation protector and layered perforation oil testing tubular column |
-
2005
- 2005-06-26 CN CN 200520021134 patent/CN2804377Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522881A (en) * | 2016-12-07 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Downhole isolating valve |
| CN110821443A (en) * | 2018-08-09 | 2020-02-21 | 中国石油天然气股份有限公司 | RD valve perforation protector and layered perforation oil testing tubular column |
| CN110821443B (en) * | 2018-08-09 | 2021-09-28 | 中国石油天然气股份有限公司 | RD valve perforation protector and layered perforation oil testing tubular column |
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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: 20060809 |