CN206987782U - A kind of underground floating ball device - Google Patents
A kind of underground floating ball device Download PDFInfo
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- CN206987782U CN206987782U CN201720752041.5U CN201720752041U CN206987782U CN 206987782 U CN206987782 U CN 206987782U CN 201720752041 U CN201720752041 U CN 201720752041U CN 206987782 U CN206987782 U CN 206987782U
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- inner casing
- seat body
- ball device
- pipe string
- floating ball
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Abstract
The utility model provides a kind of underground floating ball device, including shell；The inner casing being fixed in shell, intrastructure are the sleeve with blind end and open end, and opening is provided with the side wall of the close blind end of inner casing；Ball seat body in inner casing, ball seat body is configured to hollow sleeve, and can be slided exposing between the first position of opening and the second place for closing opening；The ball cover being installed at the open end of inner casing, ball cover are configured to top and periphery and are equipped with the hollow out cylindrical cover of through hole, and the receiving space for accommodating spheroid is formd between ball cover and ball seat body；And the stopping means being arranged between inner casing and ball seat body.When can realize that pipe seals in well, the annular space of pipe string and floating ball device is single circulation status of the annular space into pipe string, when pipe string in place after, the annular space of pipe string and floating ball device is in not circulation status, and can be always maintained at this state.
Description
Technical field
The utility model belongs to petroleum industry downhole tool technical field, and in particular to a kind of underground floating ball device.
Background technology
In the operation process such as Cementing, completion, pressure break, often using float collar, float shoe.Float collar, float shoe are a kind of ball-and-seats,
The purpose is to ensure that the fluids such as drilling fluid, cement mortar realize the one-way flow of pipe string and float collar, the annular space of float shoe.Specifically
Say, be exactly the fluid such as drilling fluid, cement mortar can circulate out of pipe string into annular space, and can not be out of annular space into pipe string
Circulation, to realize specific technological process.
At present also have a kind of automatic grouting float collar float plug, be the state of two-way circulating when pipe seals in well, when pipe string in place after,
Suppressed out of pipe string, the function of automatic grouting float collar float plug is changed into as common float collar float plug, and its state is become by two-way circulating
For one-way flow, to realize follow-up construction technology.
With the development of petroleum works technology, New Technologies continuously emerge.When sealing in well sometimes for pipe in pipe string
With the annular space of float collar, float shoe for annular space into pipe string it is negotiable, and pipe string is to the non-marketable single circulation status of annular space, and when pipe
After going here and there in place, need again in pipe string and float collar, the annular space of float shoe are in the state not circulated.
Utility model content
The technical problems to be solved in the utility model is overcome the deficiencies in the prior art, there is provided a kind of underground is filled with ball float
Put, can realize in pipe string when pipe seals in well be in the annular space of the floating ball device annular space into pipe string it is negotiable, and pipe string to
The non-marketable single circulation status of annular space, and when pipe string in place after, with being in not flow forever in the annular space of floating ball device in pipe string
Logical state.
In order to solve the above technical problems, the utility model proposes technical scheme be：
A kind of underground floating ball device, including：Shell；The inner casing being fixed in shell, intrastructure are with blind end
With the sleeve of open end, opening is provided with the side wall of the close blind end of inner casing；Ball seat body in inner casing, ball seat body
Hollow sleeve is configured to, and can be slided exposing between the first position of opening and the second place for closing opening
It is dynamic；The ball cover being installed at the open end of inner casing, ball cover is configured to top and periphery is equipped with the hollow out cylindrical cover of through hole, and
And the receiving space for accommodating spheroid is formd between ball cover and ball seat body；And the limit being arranged between inner casing and ball seat body
Position device.
When entering well, the device is connected with pipe string.During pipe string tripping in, because inner casing is provided with opening, because
This can form flow channel in floating ball device.That is, downhole fluid can pass through the areole of ball cover, ball seat body
Opening on inner passage and inner casing and form fluid communication.Therefore, spheroid is in floating state in a liquid, with ball cover phase
Contact.It is now negotiable into pipe string for annular space, and pipe string is to the non-marketable single circulation status of annular space.When pipe string in place after,
From well head pump liquid, spheroid contacts with ball seat body under the effect of pump liquid pressure and blocks the entrance of ball seat body, therefore
Into sealing state in pipe string, thus allow for building the pressure.When pressure reaches determination degree in pipe string, ball and ball seat body can be promoted
The closing end in contact until ball seat body and inner casing is moved along together, and ensures that ball seat body can not in the presence of stopping means
Retreat, now opening is closed by ball seat body, it is achieved thereby that pipe string is in permanent closed state, the underground technique to implement new carries
For supporting.
For above-mentioned technical proposal, the further improvement that can be also discussed below.
In a specific embodiment, stopping means includes jump ring, and the inner circumferential of the periphery of ball seat body and inner casing
It is respectively provided with the first jump-ring slot and the second jump-ring slot for accommodating jump ring.
Opening is configured to open when jump ring is in the first jump-ring slot, and is closed when jump ring is in the second jump-ring slot
Close.
Pipe string can so be ensured when entering well, the annular space with floating ball device is in that annular space is negotiable into pipe string, and is managed
Go here and there to the non-marketable single circulation status of annular space.When pipe string in place after, well head pump liquid pressure effect under, jump ring enter
When second jump-ring slot, pipe string is in permanent closed state.
In a specific embodiment, stopping means also includes shear pin, and the inner circumferential of inner casing and ball seat body is outer
Shear pin hole is correspondingly arranged on week, shear pin is arranged in shear pin hole.
Under the position-limiting action of shear pin, it is possible to achieve when pipe seals in well, the positioning between ball seat body and inner casing is firm, makes pipe
String and the annular space of floating ball device are in that annular space is negotiable into pipe string, and pipe string is to the non-marketable single circulation status of annular space.When
Pipe string in place after, under the pressure effect of well head pump liquid, shear pin can be cut, promote ball seat body forward slip, closing stream
Through hole, it is in permanent closed state to realize pipe string.
In one preferred embodiment, ball seat body is provided with for the one end contacted with spheroid and spheroid coordinates
It part, can so ensure spheroid and ball seat body close-fitting contact, block the entrance of ball seat body, it is ensured that into sealing shape in pipe string
State, built the pressure.
Specifically, in order to further ensure that the pipe string permanent closed state of pipe string afterwards in place, set between shell and inner casing
There is the first sealing ring to ensure the sealing between shell and inner casing.Also, it is provided with the second sealing ring between inner casing and ball seat body to come
Ensure the sealing between ball seat body and inner casing.Further, the 3rd sealing ring is provided between inner casing and ball seat body.
In a specific embodiment, in order to simplify the structure of underground floating ball device of the present utility model, inner casing
With shell to be threadedly coupled, ball cover with inner casing to be threadedly coupled, in floating ball device assembled by this dismountable connected mode
With it is simple and convenient when changing, safeguarding.
In a specific embodiment, connect in order to facilitate floating ball device and pipe series winding, set respectively at the both ends of shell
There is the internal thread or external screw thread connect with pipe series winding.
Compared with prior art, the utility model has the advantage of with following function：When pipe seals in well, pipe string and ball float
The annular space of device is that annular space is negotiable into pipe string, and pipe string is to the non-marketable single circulation status of annular space.When pipe string in place
Afterwards, from well head pump liquid, the annular space of pipe string and floating ball device is in not circulation status, it is possible to achieve and suppress, build the pressure in pipe, and
And the not circulation status of the annular space of this pipe string and floating ball device can be always maintained at, provide branch to implement new underground technique
Hold.
Brief description of the drawings
The utility model will be hereinafter described in more detail based on embodiment and refer to the attached drawing.Wherein：
Fig. 1 schematically illustrates the underground floating ball device of the utility model embodiment under open mode；
Fig. 2 is schematically illustrated be closed under the utility model embodiment underground floating ball device.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not drawn according to the ratio of reality.
Embodiment
Further detailed utility model, but not therefore is made to the utility model below in conjunction with the drawings and specific embodiments
And limit the scope of protection of the utility model.
Fig. 1 and Fig. 2 schematically illustrates the underground floating ball device 10 of the utility model embodiment.Such as Fig. 1 and Fig. 2 institutes
Show, the underground floating ball device 10 of the present embodiment includes：Shell 1 and the inner casing 2 being fixed in shell 1, specifically, the structure of shell 1
Make as the tubular structure of installation can be coordinated with pipe string, inner casing 2 is configured with the sleeve of blind end and open end, in inner casing 2
Side wall close to closed end is provided with opening 12；Ball seat body 3 in inner casing 2, ball seat body 3 are configured to hollow sleeve, and
And it can be slided exposing between the first position of opening 12 and the second place for closing opening 12；It is installed on inner casing 2
Ball cover 5 at open end, ball cover 5 are configured to top and periphery and are equipped with the hollow out cylindrical cover of through hole, and in ball cover 5 and ball
The receiving space for accommodating spheroid 4 is formd between pedestal 3；And the stopping means 6 being arranged between inner casing 2 and ball seat body 3.
During pipe string tripping in, spheroid 4 is floated in ball cover 5, and the material that spheroid 4 is selected, its density should be as far as possible small, such as high
Molecular material；Or spheroid 4 is it is so structured that hollow sphere.
As depicted in figs. 1 and 2, in the present embodiment, stopping means 6 includes jump ring 61, and it, which is contained in, is arranged in ball seat body
Periphery on the first jump-ring slot 62.Meanwhile the first jump-ring slot for accommodating jump ring 61 is also disposed with the inner circumferential of inner casing 2
65.Opening 12 is configured to open when jump ring 61 is in the first jump-ring slot 62, and is in the second jump-ring slot 65 in jump ring 61
Closed when interior.Pipe string can so be ensured when entering well, the annular space with floating ball device is that annular space is negotiable into pipe string, and pipe string
To the non-marketable single circulation status of annular space.When pipe string in place after, under the pressure effect of well head pump liquid, jump ring enters the
When two jump-ring slots, pipe string is in permanent closed state.Further, in the present embodiment, stopping means 6 also includes shear pin
63, and shear pin hole 64 is correspondingly arranged on the periphery of the inner circumferential of inner casing 2 and ball seat body 3, shear pin 63 is arranged in shear pin hole 64.
Under the position-limiting action of shear pin, it is possible to achieve when pipe seals in well, the positioning between ball seat body and inner casing is firm, makes pipe string and ball float
The annular space of device is negotiable into pipe string in annular space, and pipe string is to the non-marketable single circulation status of annular space.When pipe string in place
Afterwards, under the pressure effect of well head pump liquid, shear pin 63 can be cut, promotes ball seat body toward front slide to close opening,
It is in permanent closed state to realize pipe string.
When entering well, floating ball device 10 is connected with pipe string.As shown in figure 1, during pipe string tripping in, due to inner casing 2
Opening 12 is provided with, therefore flow channel can be formed in floating ball device 10.That is, downhole fluid can pass through ball
Cover 5 areole, the inner passage of ball seat body 3 and the opening 12 on inner casing 2 and formed and be in fluid communication.Therefore, spheroid 4 exists
It is in floating state in liquid, is in contact with ball cover 5.It is now negotiable into pipe string for annular space, and pipe string is non-negotiable to annular space
Single circulation status.As shown in Fig. 2 when pipe string in place after, from well head pump liquid, spheroid 4 is under the effect of pump liquid pressure
Contacted with ball seat body 3, block the entrance of ball seat body 3, therefore thus allow for building the pressure into sealing state in pipe string.When pipe string
When interior pressure reaches the shear strength of shear pin 63, shear pin 63 is cut, and promotes spheroid 4 and ball seat body 3 to be moved along together, jump ring 61
Depart from the first jump-ring slot 62 on ball seat body and enter in the jump-ring slot 65 of inner casing, now the blind end of ball seat body 3 and inner casing 2
Contact, and ensure that ball seat body can not retreat in the presence of jump ring 61.Now opening 12 is closed by ball seat body 3, so as to real
It is in permanent closed state to have showed pipe string, and the underground technique to implement new provides support.
As depicted in figs. 1 and 2, in the present embodiment, in order to further ensure that the pipe string permanent closing shape of pipe string afterwards in place
State, the first sealing ring 7 is provided between shell 1 and inner casing 2 to ensure the sealing between shell and inner casing.Also, inner casing 2 and ball
The second sealing ring 8 is provided with upstream region between pedestal 3 to ensure the sealing between ball seat body and inner casing.Further,
The 3rd sealing ring 9 is additionally provided with downstream area between inner casing 2 and ball seat body 3.
As depicted in figs. 1 and 2, specifically, in the present embodiment, it is interior in order to simplify the structure of underground floating ball device 10
For shell 2 with shell 1 to be threadedly coupled, ball cover 5 is to be threadedly coupled with inner casing 2.The connected mode of this detachable enters luggage in device
It is simple and convenient when matching somebody with somebody and change, safeguarding.Connect in order to facilitate underground floating ball device 10 and pipe series winding, distinguish at the both ends of shell 1
Provided with the internal thread or external screw thread connect with pipe series winding.
As depicted in figs. 1 and 2, in one preferred embodiment, ball seat body 3 for contact with spheroid 4 one
End is provided with the part coordinated with spheroid 4.In such manner, it is possible to ensure spheroid and ball seat body close-fitting contact, entering for ball seat body is blocked
Mouthful, it is ensured that into sealing state in pipe string, built the pressure.
According to above-described embodiment, the underground floating ball device that the utility model is related to can be realized：When pipe seals in well, pipe string
Annular space with floating ball device is that annular space is negotiable into pipe string, and to the non-marketable single circulation status of annular space in pipe string；When
Pipe string in place after, from well head pump liquid, the annular space of pipe string and floating ball device is in not circulation status, it is possible to achieve is beaten in pipe
Press, build the pressure, and the not circulation status of the annular space of this pipe string and floating ball device can be always maintained at, to implement new underground
Technique provides support.
Although the utility model is described by reference to preferred embodiment, the scope of the utility model is not being departed from
In the case of, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as being not present
Structural hazard, the every technical characteristic being previously mentioned in each embodiment can combine in any way.The utility model is simultaneously
It is not limited to specific embodiment disclosed herein, but all technical schemes including falling within the scope of the claims.
Claims (10)
- A kind of 1. underground floating ball device, it is characterised in that including：Shell；The inner casing being fixed in the shell, the intrastructure is the sleeve with blind end and open end, in the inner casing The side wall of close blind end be provided with opening；Ball seat body in the inner casing, the ball seat body is configured to hollow sleeve, and can expose the circulation Slided between the first position in hole and the second place for closing the opening；The ball cover being installed at the open end of the inner casing, the ball cover are configured to top and periphery and are equipped with the hollow out circle of through hole Cylindricality cover, and form between the ball cover and the ball seat body receiving space for accommodating spheroid；WithThe stopping means being arranged between the inner casing and the ball seat body.
- 2. underground floating ball device according to claim 1, it is characterised in that the stopping means includes jump ring, and The periphery of the ball seat body and the inner circumferential of the inner casing are respectively provided with the first jump-ring slot and the second jump-ring slot for accommodating jump ring.
- 3. underground floating ball device according to claim 2, it is characterised in that the opening is configured in the jump ring Open when in first jump-ring slot, and closed when the jump ring is in second jump-ring slot.
- 4. the underground floating ball device according to Claims 2 or 3, it is characterised in that the stopping means also includes shear pin, And shear pin hole is correspondingly arranged on the periphery of the inner circumferential of the inner casing and the ball seat body, the shear pin is arranged in the shear pin In hole.
- 5. underground floating ball device according to any one of claim 1 to 3, it is characterised in that the use of the ball seat body The part coordinated with the spheroid is provided with the one end contacted with the spheroid.
- 6. underground floating ball device according to any one of claim 1 to 3, it is characterised in that the shell with it is described The first sealing ring is provided between inner casing.
- 7. underground floating ball device according to any one of claim 1 to 3, it is characterised in that the inner casing with it is described At least one of the second sealing ring and the 3rd sealing ring are provided between ball seat body.
- 8. underground floating ball device according to any one of claim 1 to 3, it is characterised in that the inner casing with it is described Shell is threaded connection.
- 9. underground floating ball device according to any one of claim 1 to 3, it is characterised in that the ball cover with it is described Inner casing is threaded connection.
- 10. underground floating ball device according to any one of claim 1 to 3, it is characterised in that the both ends of the shell The one kind being respectively equipped with the internal thread and external screw thread connect with pipe series winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720752041.5U CN206987782U (en) | 2017-06-26 | 2017-06-26 | A kind of underground floating ball device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720752041.5U CN206987782U (en) | 2017-06-26 | 2017-06-26 | A kind of underground floating ball device |
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| Publication Number | Publication Date |
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| CN206987782U true CN206987782U (en) | 2018-02-09 |
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| CN201720752041.5U Active CN206987782U (en) | 2017-06-26 | 2017-06-26 | A kind of underground floating ball device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006735A (en) * | 2021-03-22 | 2021-06-22 | 中国石油天然气集团有限公司 | Floating ball type self-grouting floating hoop and continuous uninterrupted casing running method |
-
2017
- 2017-06-26 CN CN201720752041.5U patent/CN206987782U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006735A (en) * | 2021-03-22 | 2021-06-22 | 中国石油天然气集团有限公司 | Floating ball type self-grouting floating hoop and continuous uninterrupted casing running method |
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