CN202441329U - Oilfield self-sealing reverse circulation valve - Google Patents
Oilfield self-sealing reverse circulation valve Download PDFInfo
- Publication number
- CN202441329U CN202441329U CN2012200633994U CN201220063399U CN202441329U CN 202441329 U CN202441329 U CN 202441329U CN 2012200633994 U CN2012200633994 U CN 2012200633994U CN 201220063399 U CN201220063399 U CN 201220063399U CN 202441329 U CN202441329 U CN 202441329U
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- CN
- China
- Prior art keywords
- sleeve
- connector
- reverse circulation
- self
- circulation valve
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 18
- 239000010985 leather Substances 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 37
- 229910052802 copper Inorganic materials 0.000 claims description 29
- 239000010949 copper Substances 0.000 claims description 29
- 238000007373 indentation Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 abstract 3
- 238000010168 coupling process Methods 0.000 abstract 3
- 238000005859 coupling reaction Methods 0.000 abstract 3
- 238000005406 washing Methods 0.000 abstract 3
- 239000003984 copper intrauterine device Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of reverse circulation valves for oil fields and provides an oilfield self-sealing reverse circulation valve. The reverse circulation valve comprises a coupling, a sleeve, a central pipe and a reverse washing leather cup, wherein the internal side of the right end of the coupling is fixedly connected with the external side of the left end of the central pipe; the internal side of the sleeve is of a step shape which is narrow on the left and wide on the right; the external side of the right end of the coupling is fixedly connected with the internal side of the left part of the sleeve; a reverse washing chamber is formed between the central pipe and the right part of the sleeve; the right part of the reverse washing chamber is provided with a connector whose external diameter is less than the internal diameter of the sleeve; the internal side of the connector is fixed on the central pipe; the external side surface of the connector is of a step shape which has a narrow left part and a wide right part; and teeth are arranged at the external side surface of the left part of the connector. The oilfield self-sealing reverse circulation valve provided by the utility model has the advantages of reasonable and compact structure, convenience in use, reliability for sealing, easiness for opening and closing, uneasiness for blockage and large overflowing area; therefore, stronger adaptability and reliability are obtained and the working efficiency is greatly increased.
Description
Technical field
The utility model relates to and is used for oil field reverse circulation valve technical field, is the self-styled reverse circulation valve in a kind of oil field.
Background technology
Reverse circulation valve has played the effect that can not be substituted as a kind of oil field down-hole complete sets of Techniques instrument commonly used in the variation that realizes the tubing string function.Situation about being not closed completely in use often appears in existing reverse circulation valve, and this just causes tubing string to lose efficacy to have to propose tubing string changes instrument, has therefore caused the repetition workover treatment, has increased operating cost.
Summary of the invention
The utility model provides a kind of oil field self-styled reverse circulation valve, has overcome the deficiency of above prior art, its can solve effectively that to be not closed completely in use appear in reverse circulation valve problem.
The technical scheme of the utility model realizes like this: the self-styled reverse circulation valve in a kind of oil field comprises box cupling, sleeve, central tube and backwash leather cup; The inboard left end outside with central tube of the right-hand member of box cupling is fixed together, and the sleeve inboard is the wide step in the left narrow right side, and the right-hand member outside of box cupling is fixed together with the left part inboard of sleeve; Form the backwash chamber between the right part of central tube and sleeve, the right part in the backwash chamber has the connector of external diameter less than sleeve diameter, and the inboard of connector is fixed on the central tube; The lateral surface of connector is wide step-like of the narrow right part of left part; On the left part lateral surface of connector, teeth are arranged, the backwash leather cup comprises left plush copper and right plush copper, and left plush copper and right plush copper are fixed together; The external diameter of left side plush copper is greater than the external diameter of right plush copper; Medial surface in right plush copper has teeth, and right plush copper and connector mesh together through teeth, and left plush copper is sleeved on the inwall of sleeve and with the internal diameter of sleeve and matches; There is tapered indentations in the left end outside of left side plush copper, on the corresponding central tube in backwash chamber, the through hole that communicates with the backwash chamber is arranged.
Above through hole is two.
The inboard left end outside with central tube of the right-hand member of above box cupling is fixed together through screw thread, and the right-hand member outside of box cupling is fixed together through screw thread with the left part inboard of sleeve, and the inboard of connector is fixed on the central tube through screw thread.
Between upper binding head and the central tube sealing ring to be installed.
Between upper binding head and the central tube sealing ring to be installed.
Between above box cupling and the sleeve sealing ring is installed.
The utility model reasonable and compact in structure, easy to use, seal reliably, not only be prone to open and close, be difficult for blocking and block up, and area of passage is big, so have stronger compliance and reliability, therefore greatly improved operating efficiency.
Description of drawings
Fig. 1 looks the half section structural representation for the master of the utility model.
Coding among the figure is respectively: 1 is box cupling, and 2 is sleeve, and 3 is central tube, and 4 are the backwash chamber, and 5 is connector, and 6 is left plush copper, and 7 is right plush copper, and 8 is teeth, and 9 is tapered indentations, and 10 is through hole, and 11 is sealing ring.
The specific embodiment
As shown in Figure 1, the self-styled reverse circulation valve in a kind of oil field comprises box cupling 1, sleeve 2, central tube 3 and backwash leather cup; The inboard left end outside with central tube 3 of the right-hand member of box cupling 1 is fixed together, and the sleeve inboard is the wide step in the left narrow right side, and the right-hand member outside of box cupling 1 is fixed together with the left part inboard of sleeve 2; Form backwash chamber 4 between the right part of central tube 3 and sleeve 2, the right part in backwash chamber 4 has the connector 5 of external diameter less than sleeve 2 internal diameters, and the inboard of connector 5 is fixed on the central tube 3; The lateral surface of connector 5 is wide step-like of the narrow right part of left part; On the left part lateral surface of connector 5, teeth 8 are arranged, the backwash leather cup comprises left plush copper 6 and right plush copper 7, and left plush copper 6 is fixed together with right plush copper 7; The external diameter of left side plush copper 6 is greater than the external diameter of right plush copper 7; Medial surface in right plush copper 7 has teeth 8, and right plush copper 7 and connector 5 mesh together through teeth, and left plush copper 6 is sleeved on the inwall of sleeve 2 and with the internal diameter of sleeve 2 and matches; There is tapered indentations 9 in the left end outside of left side plush copper 6, on the central tube 3 of backwash chamber 4 correspondences, the through hole 10 that communicates with backwash chamber 4 is arranged.Like this, when tubing pressure during greater than casing pressure, the backwash leather cup just can packing oil jacket annular space; When the anti-cycle operation of needs; Suppress from sleeve pipe the inside wall that produces lateral surface that small pressure difference can make left plush copper 6 very much and sleeve 2 between oil, the cover is broken away from, the formation passage is washed, kill job; Operation finishes under the situation of oil, cover pressure balance; The lateral surface of left side plush copper 6 withstands on again on the inside wall of sleeve 2 under the effect of self elastic force, and pathway closure presses performance to guarantee that pumpingh well short circuit heat washes tubing string and proceed the ordinary production operation in unidirectional the holding of backwash leather cup.
As shown in Figure 1, as required, through hole 10 is two.
As shown in Figure 1; For the ease of installation and removal; The inboard left end outside with central tube 3 of the right-hand member of box cupling 1 is fixed together through screw thread, and the right-hand member outside of box cupling 1 is fixed together through screw thread with the left part inboard of sleeve 2, and the inboard of connector 5 is fixed on the central tube 3 through screw thread.
As shown in Figure 1, in order to increase sealing, between connector 5 and central tube 3, sealing ring 11 is installed.
As shown in Figure 1, in order to increase sealing, between box cupling 1 and the sleeve 2 sealing ring 11 is installed.
Claims (9)
1. the self-styled reverse circulation valve in oil field is characterized in that comprising box cupling (1), sleeve (2), central tube (3) and backwash leather cup; The inboard left end outside with central tube (3) of the right-hand member of box cupling (1) is fixed together; Sleeve (2) inboard is the wide step in the left narrow right side, and the right-hand member outside of box cupling (1) is fixed together with the left part inboard of sleeve (2), forms backwash chamber (4) between the right part of central tube (3) and sleeve (2); Right part in backwash chamber (4) has the connector (5) of external diameter less than sleeve (2) internal diameter; The inboard of connector (5) is fixed on the central tube (3), and the lateral surface of connector (5) is wide step-like of the narrow right part of left part, and teeth (8) are arranged on the left part lateral surface of connector (5); The backwash leather cup comprises left plush copper (6) and right plush copper (7); A left side plush copper (6) and right plush copper (7) are fixed together, and the external diameter of left plush copper (6) is greater than the external diameter of right plush copper (7), at the medial surface of right plush copper (7) teeth (8) are arranged; Right plush copper (7) and connector (5) mesh together through teeth (8); Left side plush copper (6) is sleeved on the inwall of sleeve (2) and with the internal diameter of sleeve (2) and matches, and there is tapered indentations (9) in the left end outside of left plush copper (6), on backwash chamber (4) corresponding central tube (3), the through hole (10) that communicates with backwash chamber (4) is arranged.
2. the self-styled reverse circulation valve in oil field according to claim 1 is characterized in that through hole (10) is two.
3. the self-styled reverse circulation valve in oil field according to claim 1 and 2; The inboard left end outside with central tube (3) of right-hand member that it is characterized in that box cupling (1) is fixed together through screw thread; The right-hand member outside of box cupling (1) is fixed together through screw thread with the left part inboard of sleeve (2), and the inboard of connector (5) is fixed on the central tube (3) through screw thread.
4. the self-styled reverse circulation valve in oil field according to claim 1 and 2 is characterized in that between connector (5) and the central tube (3) sealing ring (11) being installed.
5. the self-styled reverse circulation valve in oil field according to claim 3 is characterized in that between connector (5) and the central tube (3) sealing ring (11) being installed.
6. the self-styled reverse circulation valve in oil field according to claim 1 and 2 is characterized in that between box cupling (1) and the sleeve (2) sealing ring (11) being installed.
7. the self-styled reverse circulation valve in oil field according to claim 3 is characterized in that between box cupling (1) and the sleeve (2) sealing ring (11) being installed.
8.
According toThe self-styled reverse circulation valve in the described oil field of claim 4 is characterized in that between box cupling (1) and the sleeve (2) sealing ring (11) being installed.
9.
According toThe self-styled reverse circulation valve in the described oil field of claim 5 is characterized in that between box cupling (1) and the sleeve (2) sealing ring (11) being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200633994U CN202441329U (en) | 2012-02-21 | 2012-02-21 | Oilfield self-sealing reverse circulation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200633994U CN202441329U (en) | 2012-02-21 | 2012-02-21 | Oilfield self-sealing reverse circulation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441329U true CN202441329U (en) | 2012-09-19 |
Family
ID=46822782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200633994U Expired - Fee Related CN202441329U (en) | 2012-02-21 | 2012-02-21 | Oilfield self-sealing reverse circulation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441329U (en) |
-
2012
- 2012-02-21 CN CN2012200633994U patent/CN202441329U/en not_active Expired - Fee Related
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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: HAN WEIPING Free format text: FORMER OWNER: ZHOU JUNMING Effective date: 20130516 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 322304 JINHUA, ZHEJIANG PROVINCE TO: 455102 ANYANG, HENAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130516 Address after: 455102, Henan, Anyang Province North Zone fish village Patentee after: Han Weiping Address before: 322304, No. 56, former village street, Fang Zhen, Panan County, Zhejiang Patentee before: Zhou Junming |
|
| ASS | Succession or assignment of patent right |
Owner name: XI AN AONENG OIL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: HAN WEIPING Effective date: 20130609 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 455102 ANYANG, HENAN PROVINCE TO: 710000 XI AN, SHAANXI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130609 Address after: 710000 Shaanxi city in Xi'an Province Road nine, Fengcheng economic and Technological Development Zone about forty-sixth City Building 2 unit 12 floor No. 21207 Patentee after: XI'AN AONENG OIL EQUIPMENT CO., LTD. Address before: 455102, Henan, Anyang Province North Zone fish village Patentee before: Han Weiping |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20150221 |
|
| EXPY | Termination of patent right or utility model |