CN201705287U - Anti-backflow lubricating nipple of pumping well mouth - Google Patents
Anti-backflow lubricating nipple of pumping well mouth Download PDFInfo
- Publication number
- CN201705287U CN201705287U CN2010202126730U CN201020212673U CN201705287U CN 201705287 U CN201705287 U CN 201705287U CN 2010202126730 U CN2010202126730 U CN 2010202126730U CN 201020212673 U CN201020212673 U CN 201020212673U CN 201705287 U CN201705287 U CN 201705287U
- Authority
- CN
- China
- Prior art keywords
- housing
- oil
- spring
- fixed
- backflow
- 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
Landscapes
- Safety Valves (AREA)
Abstract
An anti-backflow lubricating nipple of a pumping well mouth is applied to an oil pumping well mouth to prevent the backflow of crude oil in an oil extraction system caused by low pressure of stratum or loss of a pump pipe. A hexagonal plug is fixed at an internal thread end of a shell, a stepped central hole of the shell is provided with a cone valve seat on which a valve ball is arranged, the shell is provided with a compression spring and a spring seat inside, and the spring seat is fixed in the central hole at the inner end of the hexagonal plug. The side wall of the shell is provided with an oil guide hole. The effect of the anti-backflow lubricating nipple gives play to the anti-backflow function by being installed in a lubricating nipple sleeve of a Christmas tree.
Description
Technical field
The utility model relates to technical field of petroleum extraction, and particularly a kind of pumpingh well surface choke is a kind of surface choke of causing the crude oil in the oil extraction system to reflux because of the leakage of stratum low pressure or pump line of preventing.
Background technology
At present, in the oil recovery production practices, the extraction liquid in the surface line pours in down a chimney in well sometimes.Pipeline liquid flows to flow backwards in the well and brings very big error to continuous data, geological personnel according to the analysis that error is arranged, formulate control measures to oil well, can not accurately formulate rational oil recovery scheme to oil well, can make wrong generation scheme.The main cause that extraction liquid pours in down a chimney in well is that oilwell produced fluid amount is low because oil-well strata pressure is low, feed flow is not enough; The poor sealing performance of oil well pump particularly, two valves leakages; Oil pipe has leak source.After well stops, the oil well of oil pipe leak source particularly, it is especially serious to pour in down a chimney phenomenon.So all will close the production valve after stopping to recover the oil, prevent extraction liquid and in well, pour in down a chimney phenomenon at every turn at once.
The utility model content
The purpose of this utility model is: a kind of mouth of pumped oil well anti counter-flowing oil nozzle is provided, is used for the pumpingh well that the pump condition is relatively poor, tubing string is missed, prevent that the extraction liquid in the surface line from pouring in down a chimney in oil well, guarantee the ordinary production of oil well.
The technical solution adopted in the utility model is: mouth of pumped oil well anti counter-flowing oil nozzle, mainly be made up of six side's plugs, spring base, spring, housing and valve ball, housing is the cylinder bodily form, and the stepped central hole is arranged in housing, end at housing has external screw thread, can be connected with pipeline.The other end at housing has internal thread, is fixed with one six side's plug on the housing internal thread; Six side's plugs, one end has external screw thread, and an end is positive hexahedron.There is the valve seat of taper seat in housing stepped central hole, and a valve ball is arranged on valve seat, and the compression spring is arranged in housing, and an end of spring is pressed in valve ball top, and the spring other end is fixed on the spring base, and spring base is fixed in the inner centre bore of six side's plugs.On the sidewall of housing, oil guiding hole is arranged.The similar ball-and-seat of structure.
In order to prevent to produce relative rotation between six side's plugs and the housing, in housing and six side's plug junctions, join and be drilled with screw, in screw, be fixed with a pin, will be fixing between housing and the six side's plugs.
When in mouth of pumped oil well anti counter-flowing oil nozzle, having suppressed high pressure, can in time high pressure be released and prevent to hurt sb.'s feelings, on the wall of the male end of housing, be drilled with relief hole.Housing is rotated to when external screw thread occurring, and anti counter-flowing oil nozzle inner high voltage liquid (gas) flows out by pressure relief vent, pressure can be laid down automatically, and building the pressure of preventing to cause because of valve ball is stuck hurted sb.'s feelings.
When the producing well ordinary production, oil well pump lifting shaft bottom crude oil, because the pressure of pit shaft has been higher than the pressure of gathering line, crude oil backs down valve, crude oil flows to the oil-collecting line from the oil guiding hole of refluence oil nozzle.When the pressure in shaft bottom was lower than the oil-collecting linear pressure, spring launched to head on valve ball automatically, makes the crude oil of oil-collecting line can not enter the shaft bottom.
The beneficial effects of the utility model: the utility model mouth of pumped oil well anti counter-flowing oil nozzle is installed in the production tree oil nozzle cover and plays the anti counter-flowing effect.Can overcome in production practices, since oil-well strata feed flow deficiency, the well of oil pipe leakage, and after well stopped, the phenomenon that the liquid of surface line pours in down a chimney in well can also effectively prevent to take off the well head crude oil leakage pollution problems that causes because of polished rod breaks.Anti counter-flowing oil nozzle simplicity of design of the present utility model, on-the-spot installation is very convenient.
Description of drawings
Fig. 1 is the utility model mouth of pumped oil well anti counter-flowing oil nozzle structural profile schematic diagram.
Among the figure, 1. six side's plugs, 2. spring base, 3. spring, 4. pin, 5. housing, 6. oil guiding hole, 7. valve ball, 8. relief hole.
The specific embodiment
Embodiment 1: with a mouth of pumped oil well anti counter-flowing oil nozzle is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model mouth of pumped oil well anti counter-flowing oil nozzle mainly is made up of six side's plugs 1, spring base 2, spring 3, pin 4, housing 5 and valve ball 7.Housing 5 is the cylinder bodily form, and the stepped central hole is arranged in housing 5, and an end little at housing 5 center-hole diameters has external screw thread.On the wall of the male end of housing 5, be drilled with the relief hole 8 of two symmetries.The other end at housing 5 has internal thread, is fixed with one six side's plug 1 on housing 5 internal threads; Six side's plugs, 1 one ends have external screw thread, and an end is positive hexahedron.In housing 5 and six side's plugs, 1 junction, join and be drilled with a screw, in screw, be fixed with a pin 4.
There is the valve seat of taper seat at the step place in housing 5 stepped central holes, and a valve ball 7 (valve ball) is arranged on valve seat, and a compression spring 3 is arranged in housing 5, and an end of spring 3 is pressed in valve ball 7 tops, and spring 3 other ends are fixed on the spring base 2.Spring base 2 is fixed in six side's plugs, the 1 inner centre bore.Symmetry has two oil guiding holes 6 on the sidewall of housing 5.
Claims (3)
1. mouth of pumped oil well anti counter-flowing oil nozzle, mainly form by six side's plugs (1), spring base (2), spring (3), housing (5) and valve ball (7), housing (5) is the cylinder bodily form, in housing (5) the stepped central hole is arranged, and at an end of housing (5) external screw thread is arranged; It is characterized in that: the other end at housing (5) has internal thread, is fixed with one six side's plug (1) on housing (5) internal thread; Six side's plugs (1) one end has external screw thread, and an end is positive hexahedron; There is the valve seat of taper seat in housing (5) stepped central hole, a valve ball (7) is arranged on valve seat, compression spring (3) is arranged in housing (5), one end of spring (3) is pressed in valve ball (7) top, spring (3) other end is fixed on the spring base (2), spring base (2) is fixed in the inner centre bore of six side's plugs (1), and oil guiding hole (6) is arranged on the sidewall of housing (5).
2. mouth of pumped oil well anti counter-flowing oil nozzle according to claim 1 is characterized in that: in housing (5) and six side's plug (1) junctions, join and be drilled with screw, be fixed with a pin (4) in screw.
3. mouth of pumped oil well anti counter-flowing oil nozzle according to claim 1 is characterized in that: be drilled with relief hole (8) on the wall of the male end of housing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202126730U CN201705287U (en) | 2010-05-24 | 2010-05-24 | Anti-backflow lubricating nipple of pumping well mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202126730U CN201705287U (en) | 2010-05-24 | 2010-05-24 | Anti-backflow lubricating nipple of pumping well mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705287U true CN201705287U (en) | 2011-01-12 |
Family
ID=43442442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202126730U Expired - Lifetime CN201705287U (en) | 2010-05-24 | 2010-05-24 | Anti-backflow lubricating nipple of pumping well mouth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705287U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418497A (en) * | 2011-12-15 | 2012-04-18 | 中国石油集团西部钻探工程有限公司 | Spring sheet type pressure release valve |
| CN102588960A (en) * | 2012-03-02 | 2012-07-18 | 上海锅炉厂有限公司 | Fluidization blast cap used for preventing slag leakage |
| CN114934755A (en) * | 2022-07-25 | 2022-08-23 | 帕特恩(大庆)石油科技有限公司 | Composite particle sealing device for oil pumping unit wellhead and use method thereof |
-
2010
- 2010-05-24 CN CN2010202126730U patent/CN201705287U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418497A (en) * | 2011-12-15 | 2012-04-18 | 中国石油集团西部钻探工程有限公司 | Spring sheet type pressure release valve |
| CN102588960A (en) * | 2012-03-02 | 2012-07-18 | 上海锅炉厂有限公司 | Fluidization blast cap used for preventing slag leakage |
| CN114934755A (en) * | 2022-07-25 | 2022-08-23 | 帕特恩(大庆)石油科技有限公司 | Composite particle sealing device for oil pumping unit wellhead and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204703876U (en) | A kind of bridge-type concentric separated-injection tubing string | |
| CN201705287U (en) | Anti-backflow lubricating nipple of pumping well mouth | |
| CN201778731U (en) | Oil pipe hanger for marine underwater horizontal oil production tree | |
| CN101949274A (en) | Casing shut-in valve for cementing operation | |
| CN202914024U (en) | Float collar | |
| CN203394480U (en) | Layered acidification device for oil-water well | |
| CN201292816Y (en) | Self-pouring sliding bush closing type cementing machine | |
| CN201915930U (en) | Tee joint special for thermal recovery | |
| CN101839117B (en) | Annulus safety valve | |
| CN202157784U (en) | Underground check valve | |
| CN103510921B (en) | Have and flow hollow pumping equipment mutually | |
| CN203488143U (en) | Automatic mud grouting float-collar float shoe | |
| CN203626791U (en) | Differential pressure sliding sleeve with dual protection | |
| CN202970623U (en) | One-way oil draining device | |
| CN203394451U (en) | Leak-sealing water-blocking oil extraction tubular column for heavy oil horizontal well | |
| CN203347704U (en) | Well washing and oil draining device for pumping well | |
| CN206668236U (en) | The positioning acidizing device of stratified injection well | |
| CN202039816U (en) | Bidirectional back pressure valve | |
| CN202596697U (en) | Fracturing wellhead ball catching device | |
| CN201635703U (en) | Sleeve pipe pressure test plugging device | |
| CN201202458Y (en) | Minor diameter eccentric water distributing apparatus | |
| CN202810828U (en) | Oil well bridging plug testing apparatus | |
| CN203584360U (en) | Sucker rod blowout preventer | |
| CN203584382U (en) | Extract oil circulation injection and extraction device | |
| CN203420678U (en) | Low-yield wax-deposition oil well flow string |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |
|
| CX01 | Expiry of patent term |