CN2360592Y - Underground safety control device - Google Patents
Underground safety control device Download PDFInfo
- Publication number
- CN2360592Y CN2360592Y CN 98243853 CN98243853U CN2360592Y CN 2360592 Y CN2360592 Y CN 2360592Y CN 98243853 CN98243853 CN 98243853 CN 98243853 U CN98243853 U CN 98243853U CN 2360592 Y CN2360592 Y CN 2360592Y
- Authority
- CN
- China
- Prior art keywords
- safety control
- control device
- seating nipple
- sucker rod
- downhole safety
- 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 claims abstract description 25
- 210000002445 nipple Anatomy 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 2
- 239000003129 oil well Substances 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
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- Joints Allowing Movement (AREA)
Abstract
A downhole safety control device comprises an upper joint, a lower joint, a spring, a sealing element and the like. The pressure-bearing sleeve is connected with the upper joint and the lower joint, the inner cavity of the pressure-bearing sleeve is provided with a working barrel and a spring, the sucker rod passes through the working barrel, the combined sealing device is arranged on the sucker rod and is tightly combined with the working barrel, and the annular space between the working barrel and the sucker rod is sealed. The utility model discloses a safety device in pit is applicable to the safety control in pit of sucker-rod pump oil well, the safety control in pit of specially adapted screw pump oil recovery well.
Description
The utility model relates to oil field development sucker rod pumping downhole safety control device, and it comprises top connection, lower contact, spring and seal.
On the 24th page of " petroleum machinery " 1997 the 9th phase, delivered one piece and be entitled as the article of " offshore field storm valve ", a kind of storm valve is disclosed, its purpose provides safety control under a kind of marine flowing well oil recovery and the electric pump well producing well, it is configured to valve plate formula seal shaft oil flow channel structure, be applicable to flowing well and electric pump well, its shortcoming mainly is not fit into the sucker rod pumping well, does not more fit into the rotation rod pumping well, as screw pump oil production well.
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art and a kind of sucker rod pump that is applicable to is provided, and swingle pump particularly is as the downhole safety control device of screw bolt well.
The purpose of this utility model reaches like this: the downhole safety control device that comprises upper and lower joint, spring and seal, pressure-bearing interlocks and connects, lower contact, its inner chamber installation work tube and spring, sucker rod passes seating nipple, combination sealing arrangement is installed on it, closely cooperate with seating nipple, form the sealing of annular space between seating nipple and the sucker rod.
The purpose of this utility model can also reach by following measure: the combination sealing arrangement of downhole safety control device comprises seal receptacle, black box and target seeker, is installed on the sucker rod.Black box comprises that " V " type seal and " ladder " type seal combination form, and are installed on the seal receptacle.The anti-rotation pin is arranged in the top connection, match with the seating nipple rail groove, and in its groove, move,, the anti-rotation pin is installed in the top connection with control seating nipple axial rotation, and the bigger drum type inner chamber of design.
The utility model is in closed condition owing to the active force of spring is combined closely combination sealing arrangement on the sucker rod and seating nipple when going into the well, when suppressing by the hydraulic pressure hole, hydraulic coupling push the work forward the tube move downward, and compression spring, make that combination sealing arrangement disengages on seating nipple and the sucker rod, thereby open the annular space oil flow channel between seating nipple and the sucker rod, when the urgent closing well of needs, only need release hydraulic coupling, under the effect of spring, seating nipple is resetted, and combine closely with combination sealing arrangement and seal oil flow channel, thereby realize security control oil well.
The utility model can be realized the static state and the dynamic seal (packing) of swingle and oil pipe annular space and set upright problem automatically, takes the double-layer seal form of the hard sealing of low pressure soft seal and high pressure to guarantee safety control long-term work under high pressure; Rail groove on its seating nipple matches with the pin of top connection; The restraint of labour tube rotates with sucker rod, guarantees effective long term seal of sucker rod and seating nipple.Reach safety, environmental requirement in field produces.
Drawing explanation of the present utility model: Fig. 1 is main TV structure figure of the present utility model; Fig. 2 is the combination sealing arrangement front view; Fig. 3 is the utility model seating nipple schematic diagram.
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, pressure-bearing cover 10 links to each other with lower contact 13 with top connection 6, seating nipple 9 and spring 12 are contained in pressure-bearing cover inner chamber, between pressure-bearing cover and the seating nipple combination sealing 11 is housed, last sucker rod 1 and lower sucker rod 5 pass the seating nipple inner chamber, on the combination sealing arrangement that comprises seal receptacle 2, black box 7 and target seeker 8.Seating nipple and combination sealing arrangement are combined closely, the annular flow passage between sealing sucker rod and the seating nipple.Anti-rotation pin 3 is installed in the top connection 6, matches with the rail groove 14 of seating nipple, carry out vertically (to) motion, prevent that seating nipple from axially rotatablely moving, in order to avoid influence sealing effectiveness.Fluid head 4 connects hydraulic system, and when liquid feeding was depressed into certain pressure reduction, seating nipple moved down, and compression spring 12, and annulus access is opened, and sucker rod is free to rotate, keeps bad empty inner fluid unimpeded.Venting pressure, seating nipple sets back under the effect of spring, combines closely with combination sealing arrangement, closes annulus access, keeps sealing, realizes security control.
As accompanying drawing 2, the black box of the combination sealing arrangement of installing on the sucker rod comprises 6 " V " type seal and 1 " ladder " type seal of having automatic compensating action, and this hermetically-sealed construction is realized effective, reliable radial and axial sealing to the rotation roofbolt.
As accompanying drawing 3, rail groove is arranged on the seating nipple, to match with the anti-rotation pin in the rail groove, seating nipple influences sealing effectiveness with the sucker rod plane of rotation when preventing that seal receptacle from contacting with seating nipple.
The utility model has the following advantages compared with prior art:
1. be applicable to the security control with swingle pumpingh well, effectively cut off between sucker rod and oil pipe Annular flow, reach the security control purpose.
2. the employing combination sealing arrangement seals reliably, gets final product again radial seal of axial seal but have. But both low pressure soft seals, but high pressure seals firmly again.
3. seating nipple has pressure-bearing and sealing double action.
The utility model is applicable to land, the marine downhole safety control that the bar producing well is arranged.
Claims (6)
1. a downhole safety control device comprises upper and lower joint, spring and seal, it is characterized in that pressure-bearing interlock connect, lower contact, its inner chamber installation work tube and spring, sucker rod passes seating nipple, combination sealing arrangement is installed on it, is closely cooperated, form sealing with seating nipple.
2. downhole safety control device according to claim 1 is characterized in that combination sealing arrangement comprises seal receptacle, black box and target seeker, is installed on the sucker rod.
3. downhole safety control device according to claim 1 and 2 is characterized in that black box comprises that " V " type seal and " ladder " type seal combination form, and are installed on the seal receptacle.
4. downhole safety control device according to claim 1 is characterized in that the anti-rotation pin is arranged in the top connection, matches with the seating nipple rail groove.
5. according to claim 1 or 4 described downhole safety control devices, it is characterized in that vertical rail groove is arranged on the seating nipple, the anti-rotation pin moves therein.
6. downhole safety control device according to claim 1 and 2 is characterized in that the anti-rotation pin is installed in the top connection, and bigger drum type inner chamber is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98243853 CN2360592Y (en) | 1998-12-16 | 1998-12-16 | Underground safety control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98243853 CN2360592Y (en) | 1998-12-16 | 1998-12-16 | Underground safety control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2360592Y true CN2360592Y (en) | 2000-01-26 |
Family
ID=33990154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98243853 Expired - Fee Related CN2360592Y (en) | 1998-12-16 | 1998-12-16 | Underground safety control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2360592Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147714A (en) * | 2013-03-05 | 2013-06-12 | 中国海洋石油总公司 | Annulus safety device applied to electric submersible pump producing well |
| CN107013179A (en) * | 2017-06-13 | 2017-08-04 | 山东威德福高原人工举升装备有限公司 | One kind has underground blow-out preventing device and method in rod recovering system oil pipe |
-
1998
- 1998-12-16 CN CN 98243853 patent/CN2360592Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147714A (en) * | 2013-03-05 | 2013-06-12 | 中国海洋石油总公司 | Annulus safety device applied to electric submersible pump producing well |
| CN107013179A (en) * | 2017-06-13 | 2017-08-04 | 山东威德福高原人工举升装备有限公司 | One kind has underground blow-out preventing device and method in rod recovering system oil pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |