CN206845145U - A kind of stepping producing formation protector - Google Patents
A kind of stepping producing formation protector Download PDFInfo
- Publication number
- CN206845145U CN206845145U CN201720670882.1U CN201720670882U CN206845145U CN 206845145 U CN206845145 U CN 206845145U CN 201720670882 U CN201720670882 U CN 201720670882U CN 206845145 U CN206845145 U CN 206845145U
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- Prior art keywords
- mandrel
- plug
- packing element
- valve element
- top connection
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Abstract
It the utility model is related to a kind of stepping producing formation protector; it is made up of top connection, valve element, spring, plug mandrel, plug, packing element, packing element mandrel etc.; valve element is arranged on inside top connection; top connection has lateral flow hole; spring housing is on valve element; plug mandrel and plug are enclosed on packing element mandrel; packing element is located at plug mandrel lower end; plug is close together with sleeve pipe when instrument is gone into the well; plug mandrel and plug while descending compression packing element during anti-flushing well; make packing element Expansion sealing, valve element is realized and sealed with packing element mandrel under thrust in flushing fluid.
Description
Technical field
A kind of a kind of downhole tool that production is asked for oil extraction in oil field and formation testing is the utility model is related to, belongs to a kind of stepping
Producing formation protector.
Background technology
During prior art oil field machinery oil well backwash, especially permanently effective instrument does not avoid lost circulation from arriving
Stratum, the presence of this phenomenon make the well workover cycle shorten, reduce oil recovery efficiency, add mechanical oil well management cost and
Maintenance cost.
Utility model content
The technical problems to be solved in the utility model is：Flushing fluid when overcoming oil field machinery oil well backwash in the prior art
A kind of easily technical problem of the leakage to stratum, there is provided stepping producing formation protector.
Technical scheme is used by the utility model solves its technical problem：
A kind of stepping producing formation protector, including top connection, valve element, spring, plug mandrel, plug, packing element, packing element core
Axle；The sliding eye of semi-closed structure is internally provided with the tip position of top connection, wherein valve element is arranged on upper by sliding eye
Inside joint, the open end of sliding eye is provided with the support ring A of annular, the support ring of annular is provided with the bottom of valve element
B, connected between support ring A and support ring B by spring, spring housing is sliding between valve element and sliding eye inwall on valve element
Dynamic connection, a discharge opeing cavity is provided with the bottom of the top connection, the bottom end of the valve element extend into discharge opeing cavity
Interior, the aperture position that discharge opeing cavity is corresponded in the side wall of top connection is provided with lateral flow hole；The packing element mandrel is fixed on
The bottom of joint, packing element mandrel are internally provided with a drain line connected with discharge opeing cavity, and plug mandrel is socketed in glue
On the outer wall of tube filler axle, packing element is equally socketed on the outer wall of packing element mandrel and is located at plug mandrel lower end, in the plug mandrel
Outer wall be also socketed with plug.
As further improvement of the utility model, the ring that a section is T-shaped structure is provided with the plug mandrel
The embedding groove of shape, the bottom of the plug are fixed on plug mandrel by section for the annular mosaic block of T-shaped.
It is triangle that as further improvement of the utility model, on the outer wall of the plug, array, which is provided with some sections,
Convex annular barring.
As further improvement of the utility model, the bottom of the packing element mandrel is provided with a protruding ring, described convex
Play the annular fixing groove for being provided with that a section is T-shaped structure between the top of ring and the bottom of plug mandrel, the packing element
It is embedded into foregoing fixing groove.
As further improvement of the utility model, there is a diameter to be more than drain line in the end set of the valve element
The lug boss of internal diameter.
The beneficial effects of the utility model are：
The task of the utility model patent is to provide a kind of downhole tool, prevents from washing in stepping producing well anti-flushing well is crossed into
Well liquid enters stratum, can both improve well-flushing efficiency, also protect stratum not to be contaminated, and colleague saves flushing fluid, final real
Now extend well workover cycle and cost-effective purpose.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is structural representation of the present utility model；
Figure includes：Top connection 1, valve element 2, spring 3, plug mandrel 4, plug 5, packing element 6, packing element mandrel 7.
Embodiment
The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram,
Only illustrate basic structure of the present utility model in a schematic way, therefore it only shows the composition relevant with the utility model.
As shown in figure 1, the utility model is a kind of stepping producing formation protector, including top connection, valve element, spring, glue
Fill in mandrel, plug, packing element, packing element mandrel；The sliding eye of semi-closed structure is internally provided with the tip position of top connection, wherein
Valve element is arranged on inside top connection by sliding eye, the open end of sliding eye is provided with the support ring A of annular, in valve element
Bottom be provided with annular support ring B, connected between support ring A and support ring B by spring, spring housing on valve element,
It is slidably connected between valve element and sliding eye inwall, a discharge opeing cavity is provided with the bottom of the top connection, the valve element
Bottom end is extend into discharge opeing cavity, and the aperture position that discharge opeing cavity is corresponded in the side wall of top connection is provided with lateral flow
Hole；The packing element mandrel is fixed on the bottom of top connection, and packing element mandrel is internally provided with a row connected with discharge opeing cavity
Liquid pipeline, there is a diameter to be socketed in more than the lug boss of drain line internal diameter, plug mandrel in the end set of the valve element
On the outer wall of packing element mandrel, the annular embedding groove that a section is T-shaped structure, the plug are provided with the plug mandrel
Bottom by section for T-shaped annular mosaic block be fixed to plug mandrel on, be also socketed with the outer wall of the plug mandrel
Plug, array is provided with the convex annular barring that some sections are triangle, the bottom of the packing element mandrel on the outer wall of the plug
Portion is provided with a protruding ring, and it is T-shaped knot that a section is provided between the top of the protruding ring and the bottom of plug mandrel
The annular fixing groove of structure, packing element is socketed on the outer wall of packing element mandrel and its axial both ends is embedded into foregoing fixing groove.
Underground desired depth is arrived under stepping producing formation protector oil pipe, stepper motor is connected in downhole tool is altered
Among filter sieve tube, when normally producing, formation fluid enters stepping producing formation protector after screen casing filters, by top
Flow orifice enters oil sets annular space, during anti-flushing well in the presence of flushing fluid plug mandrel and plug descending compression packing element simultaneously
Expansion sealing, valve element is realized and sealed with packing element mandrel under thrust in flushing fluid, flushing fluid can not be largely entered stratum,
So as to reach protection stratum purpose, when stopping well-flushing, spring promotes valve element up, reopens flow channel, realizes normal raw
Production.
Using it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, pass through above-mentioned description, related work people
Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real
The content being not limited to new technical scope on specification, it is necessary to which its technology is determined according to right
Property scope.
Claims (5)
1. a kind of stepping producing formation protector, it is characterized in that：Including top connection, valve element, spring, plug mandrel, plug, glue
Cylinder, packing element mandrel；The sliding eye of semi-closed structure is internally provided with the tip position of top connection, wherein valve element passes through sliding eye
Inside top connection, the open end of sliding eye is provided with the support ring A of annular, the bottom of valve element is provided with annular
Support ring B, connected between support ring A and support ring B by spring, spring housing is on valve element, in valve element and sliding eye
It is slidably connected between wall, a discharge opeing cavity is provided with the bottom of the top connection, the bottom end of the valve element is extend into
In discharge opeing cavity, the aperture position that discharge opeing cavity is corresponded in the side wall of top connection is provided with lateral flow hole；The packing element mandrel
The bottom of top connection is fixed on, packing element mandrel is internally provided with a drain line connected with discharge opeing cavity, plug mandrel
It is socketed on the outer wall of packing element mandrel, packing element is equally socketed on the outer wall of packing element mandrel and is located at plug mandrel lower end, described
The outer wall of plug mandrel is also socketed with plug.
2. a kind of stepping producing formation protector as claimed in claim 1, it is characterized in that：One is provided with the plug mandrel
Individual section is the annular embedding groove of T-shaped structure, and the bottom of the plug is fixed to glue by section for the annular mosaic block of T-shaped
Fill on mandrel.
3. a kind of stepping producing formation protector as claimed in claim 2, it is characterized in that：Array is set on the outer wall of the plug
It is equipped with the convex annular barring that some sections are triangle.
4. a kind of stepping producing formation protector as claimed in claim 2, it is characterized in that：The bottom of the packing element mandrel is set
There is a protruding ring, the ring that a section is T-shaped structure is provided between the top of the protruding ring and the bottom of plug mandrel
The fixing groove of shape, the packing element are embedded into foregoing fixing groove.
5. a kind of stepping producing formation protector as claimed in claim 1, it is characterized in that：Have in the end set of the valve element
One diameter is more than the lug boss of drain line internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720670882.1U CN206845145U (en) | 2017-06-11 | 2017-06-11 | A kind of stepping producing formation protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720670882.1U CN206845145U (en) | 2017-06-11 | 2017-06-11 | A kind of stepping producing formation protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206845145U true CN206845145U (en) | 2018-01-05 |
Family
ID=60799553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720670882.1U Active CN206845145U (en) | 2017-06-11 | 2017-06-11 | A kind of stepping producing formation protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206845145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035337A (en) * | 2017-06-11 | 2017-08-11 | 江苏航天鸿鹏数控机械有限公司 | A kind of stepping producing formation protector |
-
2017
- 2017-06-11 CN CN201720670882.1U patent/CN206845145U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035337A (en) * | 2017-06-11 | 2017-08-11 | 江苏航天鸿鹏数控机械有限公司 | A kind of stepping producing formation protector |
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| GR01 | Patent grant |