CN203847071U - Downhole safety valve - Google Patents
Downhole safety valve Download PDFInfo
- Publication number
- CN203847071U CN203847071U CN201420266823.4U CN201420266823U CN203847071U CN 203847071 U CN203847071 U CN 203847071U CN 201420266823 U CN201420266823 U CN 201420266823U CN 203847071 U CN203847071 U CN 203847071U
- Authority
- CN
- China
- Prior art keywords
- valve
- connector
- valve body
- central tube
- storm
- 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 - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 2
- 238000007906 compression Methods 0.000 abstract 2
- 230000006837 decompression Effects 0.000 abstract 2
- 239000003208 petroleum Substances 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
A downhole safety valve comprises a liquid control pipeline connector, an upper connector, a middle connector, a piston, a slotted ring, a compression spring, a connector with inner and outer threads, a central tube, a steel sleeve, a valve body, a bonnet, a lower connector, a decompression valve, a leaf spring, a pin, a torsion spring and a screw. The upper connector is sequentially connected with the middle connector, the connector with the inner and outer threads and the lower connector. The central tube is connected with the slotted ring. The bonnet is mounted on the valve body. The decompression valve, the leaf spring, the pin and the torsion spring are mounted on the bonnet. The compression spring and the steel sleeve are sequentially mounted on the connector which is provided with the inner and outer threads and located below the slotted ring and on the valve body and in the annulus of the central tube. The liquid control pipeline connector is mounted on the upper shoulder of the upper connector. The downhole safety valve is simple in structure, convenient to use, low in cost, good in sealing performance by the elastic-rigid sealing of the bonnet and the valve body, widely applicable to petroleum downhole operation processes, and the like.
Description
Technical field
The utility model relates to oil exploitation downhole safety facility, particularly a kind of storm valve.
Background technology
Existing a kind of steel wire recovery type storm valve, its structure by sending into recovering mechanism, hydraulic sleeve type opening mechanism, valve plate rigid body sealing shut-down mechanism forms, the storm valve of this structure is that oil exploitation downhole safety technique has been brought into play effect, but it exists following shortcoming or deficiency simultaneously: 1. valve plate sealing effectiveness is poor, low pressure blow-by, is not closed completely; 2. connection of thread employing rigid body sealing, can generation becoming flexible in production operation for a long time, causes the seal failure of safety valve body; 3., after safety valve is opened, valve gap and valve body sealing surface, in unprotect state, are easily adhered to by other fouls in Oil/gas Well, affect sealing effectiveness; 4. interior latus rectum is little, affects oil gas well yield and follow-up Downhole Construction.
Summary of the invention
The purpose of this utility model is to provide a kind of improved storm valve, adopt combination and the ground hydraulic control oil pipe recovery type structures such as piston, flat spring, torsion spring, Compress Spring, internal and external threads joint, central tube, valve body and valve gap, the shortcoming or the deficiency that effectively overcome or avoid existing in above-mentioned prior art.
Storm valve described in the utility model, comprises liquid controling pipe line joint, top connection, center tap, piston, grooved ring, Compress Spring, internal and external threads joint, central tube, steel bushing, valve body, valve gap, lower contact, relief valve, flat spring, pin, torsion spring, screw.Described top connection is connected with lower contact with center tap, internal and external threads joint in turn, central tube is connected with grooved ring, valve gap is installed on valve body, relief valve, flat spring, pin and torsion spring are installed on valve gap, in internal and external threads joint under grooved ring, on valve body and the annular space of central tube, Compress Spring and steel bushing are installed in turn, liquid controling pipe line jiont treatment is in the upper shoulder of top connection.
Wherein, the shoulder of described top connection is provided with oblique hole, and liquid controling pipe line jiont treatment is in oblique hole, and this oblique hole is connected with the space on center tap inner carrier top.Described internal and external threads joint is provided with step in ladder, and steel bushing is installed on the interior step of ladder of bottom.On described valve body, valve gap is installed, relief valve, flat spring and pin are installed on valve gap.Described grooved ring is the structure that middle part is provided with outer groove.The bottom of described piston is provided with inner groove, and this inner groove is meshed with the outer groove on grooved ring.Described flat spring and relief valve are fixed by screw and valve gap.Described central tube top is arranged in the inner chamber of center tap, and contacts with its inwall, and middle and upper part is connected with grooved ring, and the inner chamber of valve body is goed deep in bottom, and contacts with its inwall.
The utility model compared with prior art tool has the following advantages:
1, simple in structure, easy to use, with low cost;
2, after safety valve is opened, valve plate, in protected state, is avoided washing away of OIH gas;
3, interior latus rectum is large, does not affect Oil/gas Well output and follow-up underground work;
4, valve bonnet seal adopts elastic packing and rigid body double sealing structure, also can guarantee the sealing of valve plate in the situation that of low pressure.
5, valve gap and valve body adopt elasticity and rigid body double containment, and elastic packing adopts material filling type nonrubber seal, under low pressure can realize sealing, the sealing of high pressure rigid body, and assurance high-low pressure is not revealed.
6, upper and lower joint endoporus is sealing surface, if safety valve seal failure, by the retaining mechanism of top connection and lower contact sealing surface and top connection, also can be lowered to standby safety valve in safety valve.
7, the outer connecting thread of safety valve all adopts rigid body and rubber double sealing structure, guarantees low pressure leakproof.
Accompanying drawing explanation
Fig. 1 is a kind of example structure schematic diagram of the present utility model;
Fig. 2 is for pressing the A-A structural representation shown in Fig. 1.
Fig. 3 is for pressing the B-B structural representation shown in Fig. 2.
The specific embodiment
With reference to Fig. 1-Fig. 3, a kind of storm valve, comprise liquid controling pipe line joint 1, top connection 2, center tap 4, piston 5, grooved ring 6, Compress Spring 7, internal and external threads joint 8, central tube 9, steel bushing 10, valve body 11, valve gap 12, lower contact 13, relief valve 14, flat spring 15, pin 16, torsion spring 17, screw 18, it is characterized in that described top connection 2 in turn with center tap 4, internal and external threads joint 8 is connected with lower contact 13, central tube 9 is connected with grooved ring 6, valve gap 12 is installed on valve body 11, relief valve 14 is installed on valve gap 12, flat spring 15, pin 16 and torsion spring 17, grooved ring 6 times, in internal and external threads joint 8 on valve body 11 and the annular space of central tube 9, Compress Spring 7 and steel bushing 10 are installed in turn, liquid controling pipe line joint 1 is installed on the upper shoulder of top connection 2.
The shoulder of top connection 2 is provided with oblique hole, and liquid controling pipe line joint 1 is installed in oblique hole, and this oblique hole is connected with the space on center tap 4 inner carrier 5 tops.Internal and external threads joint 8 is provided with step in ladder, and steel bushing 10 is installed on the interior step of ladder of bottom.Valve gap 12 is installed on valve body 11, relief valve 14, flat spring 15 and pin 16 are installed on valve gap 12.Grooved ring 6 is provided with the structure of outer groove for middle part.The bottom of piston 5 is provided with inner groove, and this inner groove is meshed with the outer groove on grooved ring 6.Flat spring 15 and relief valve 14 are fixed by screw 18 and valve gap 12.Central tube 9 tops are arranged in the inner chamber of center tap 4, and contact with its inwall, and middle and upper part is connected with grooved ring 6, and the inner chamber of valve body 11 is goed deep in bottom, and contact with its inwall.On top connection 2, center tap 4, internal and external threads joint 8 and piston 5, seal 3 is installed.Lower contact 13 inner chamber top end faces can be realized face sealing after contacting with central tube 9 lower surfaces.
During use, from ground, add hydraulic pressure, highly pressurised liquid enters the space on center tap 4 inner carrier 5 tops through liquid controling pipe line joint 1, promotes piston 5 and drives central tube 9 descending, backs down valve gap 12, realizes open mode; Keep ground controlled pressure, be held open state; Release ground controlled pressure, Compress Spring 7 will move on piston 5 and central tube 9, and valve gap 12 is closed under the effect of torsion spring 17 simultaneously.
Claims (8)
1. a storm valve, comprise liquid controling pipe line joint, top connection, center tap, piston, grooved ring, Compress Spring, internal and external threads joint, central tube, steel bushing, valve body, valve gap, lower contact, relief valve, flat spring, pin, torsion spring, screw, it is characterized in that described top connection in turn with center tap, internal and external threads joint is connected with lower contact, central tube is connected with grooved ring, valve gap is installed on valve body, relief valve is installed on valve gap, flat spring, pin and torsion spring, under grooved ring, in internal and external threads joint on valve body and the annular space of central tube, Compress Spring and steel bushing are installed in turn, liquid controling pipe line jiont treatment is in the upper shoulder of top connection.
2. storm valve according to claim 1, is characterized in that the shoulder of described top connection is provided with oblique hole, and liquid controling pipe line jiont treatment is in oblique hole, and this oblique hole is connected with the space on center tap inner carrier top.
3. storm valve according to claim 1, is characterized in that described internal and external threads joint is provided with step in ladder, and steel bushing is installed on the interior step of ladder of bottom.
4. storm valve according to claim 1, is characterized in that, on described valve body, valve gap is installed, and relief valve, flat spring and pin are installed on valve gap.
5. storm valve according to claim 1, is characterized in that described grooved ring is the structure that middle part is provided with outer groove.
6. storm valve according to claim 1 or 5, is characterized in that the bottom of described piston is provided with inner groove, and this inner groove is meshed with the outer groove on grooved ring.
7. storm valve according to claim 1, is characterized in that described flat spring and relief valve are fixed by screw and valve gap.
8. storm valve according to claim 1, is characterized in that described central tube top is arranged in the inner chamber of center tap, and contacts with its inwall, and middle and upper part is connected with grooved ring, and the inner chamber of valve body is goed deep in bottom, and contacts with its inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266823.4U CN203847071U (en) | 2014-05-23 | 2014-05-23 | Downhole safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266823.4U CN203847071U (en) | 2014-05-23 | 2014-05-23 | Downhole safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847071U true CN203847071U (en) | 2014-09-24 |
Family
ID=51560105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420266823.4U Expired - Lifetime CN203847071U (en) | 2014-05-23 | 2014-05-23 | Downhole safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847071U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986779A (en) * | 2015-01-30 | 2016-10-05 | 中国石油天然气股份有限公司 | Downhole mixed gas fracturing valve |
| CN106150455A (en) * | 2015-04-01 | 2016-11-23 | 中国石油化工股份有限公司 | Located type safety control |
| WO2018223205A1 (en) * | 2017-06-06 | 2018-12-13 | Ouro Negro Tecnologias Em Equipamentos Industriais S/A | Fully electric downhole safety tool |
| CN112412396A (en) * | 2020-11-19 | 2021-02-26 | 中国石油大学(北京) | Downhole safety valve |
-
2014
- 2014-05-23 CN CN201420266823.4U patent/CN203847071U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986779A (en) * | 2015-01-30 | 2016-10-05 | 中国石油天然气股份有限公司 | Downhole mixed gas fracturing valve |
| CN105986779B (en) * | 2015-01-30 | 2018-09-04 | 中国石油天然气股份有限公司 | A kind of mixed gas fracturing valve in underground |
| CN106150455A (en) * | 2015-04-01 | 2016-11-23 | 中国石油化工股份有限公司 | Located type safety control |
| CN106150455B (en) * | 2015-04-01 | 2019-01-25 | 中国石油化工股份有限公司 | Located type safety control |
| WO2018223205A1 (en) * | 2017-06-06 | 2018-12-13 | Ouro Negro Tecnologias Em Equipamentos Industriais S/A | Fully electric downhole safety tool |
| GB2577216A (en) * | 2017-06-06 | 2020-03-18 | Ouro Negro Tecnologias Em Equipamentos Ind S/A | Fully electric downhole safety tool |
| GB2577216B (en) * | 2017-06-06 | 2022-12-28 | Ouro Negro Tecnologias Em Equipamentos Ind S/A | Fully electric downhole safety tool |
| CN112412396A (en) * | 2020-11-19 | 2021-02-26 | 中国石油大学(北京) | Downhole safety valve |
| CN112412396B (en) * | 2020-11-19 | 2021-10-26 | 中国石油大学(北京) | Downhole safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGYING RUIFENG PETROLEUM TECHNOLOGY DEVELOPMENT Free format text: FORMER OWNER: KONG LISHENG Effective date: 20150608 Owner name: SHANDONG RUIFENG PETROLEUM TECHNOLOGY CO., LTD. QI Effective date: 20150608 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 257000 DONGYING, SHANDONG PROVINCE TO: 257067 DONGYING, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150608 Address after: 257067 Shandong Province, Dongying city Dongying District five bridge Taishan Road East Patentee after: DONGYING RUIFENG PETROLEUM TECHNOLOGY DEVELOPMENT CO.,LTD. Patentee after: SHANDONG RUIFENG PETROLEUM TECHNOLOGY Co.,Ltd. Patentee after: QINGDAO RUIXIN PETROLEUM EQUIPMENT MANUFACTURING Co.,Ltd. Address before: 257000 Shandong province Dongying City West Road No. 518 Patentee before: Kong Lisheng |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |