CN209354085U - A kind of reverse circulation valve applied in layer-by-layer filling anti-sand tool - Google Patents
A kind of reverse circulation valve applied in layer-by-layer filling anti-sand tool Download PDFInfo
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- CN209354085U CN209354085U CN201821853226.6U CN201821853226U CN209354085U CN 209354085 U CN209354085 U CN 209354085U CN 201821853226 U CN201821853226 U CN 201821853226U CN 209354085 U CN209354085 U CN 209354085U
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Abstract
The utility model discloses a kind of reverse circulation valves applied in layer-by-layer filling anti-sand tool.The reverse circulation valve includes main body, positioning sleeve and inner sliding sleeve, positioning sleeve is set in the outside of main body, inner sliding sleeve is nested in the inside of main body, inner sliding sleeve is fixedly connected with positioning sleeve, the support rod being provided in the inner cavity of reverse circulation valve above inner sliding sleeve, occluding body is arranged on support rod, elastic mechanism is provided between occluding body and the upper end of support rod, under filling state, occluding body is abutted with the top of inner sliding sleeve so that elastic mechanism is in compressive state, during upper lifting pipe post reacting cycle, positioning sleeve drives inner sliding sleeve to move downward, under the promotion of elastic mechanism, occluding body moves downward so that the reverse circulation valve is closed.It pushes occluding body to realize using elastic mechanism to close, ensure that reverse circulation valve can realize closed state in any hole deviation, avoids displacement fluid leakage to stratum, the sand for avoiding sand control pipe buries, sand card phenomenon.
Description
Technical field
The utility model relates to oil field drilling completion and sand control apparatus fields, and in particular to a kind of to apply in layer-by-layer filling anti-sand work
Reverse circulation valve in tool.
Background technique
Bohai Bay Oil major part oil reservoir belongs to conveying sandstone structure, and the producing well more than 90% requires to carry out sand control work
Industry, layer-by-layer filling technique are one of more safe and effective modes in marine gravel filling or pressure crack filling anti-sand operation.
Reverse circulation valve is one of the key tool in layer-by-layer filling anti-sand tool, as follows using the course of work: to fill
Cheng Zhong, reverse circulation valve is in the open state, provides common fluid channel for returning fluid's body, and sand water mixed liquid body is from filling sliding sleeve
Into screen jacket annular space, sand is stopped by screen casing, and load fluid enters washing pipe from sealed bottom pipe with holes, flows through reverse circulation valve, enters
The small annular space of packing tool is returned and is portalled into big annular space, returned out from well head；During upper lifting pipe post reacting cycle, reverse circulation valve is closed
It closes, the displacement fluid come in from big annular space, a part from pack hole enters drilling rod to replace the mortar in drilling rod, and a part is from returning out
Hole enters the small annular space of packing tool, ends after reaching reverse circulation valve, and this prevents displacement fluid leakages to stratum, is effectively ensured
Reverse circulating fluid efficiency.
In the prior art, when reverse circulation valve is applied in the well of hole deviation larger (hole deviation is more than 60 degree), there are reacting cycles
The problem of valve can not close, and then cause most of hydraulic slip to stratum so that causing the sand of sand control pipe to bury, sand card, significantly
Increase the risk of sand control construction.
Utility model content
The purpose of the utility model embodiment is to provide a kind of reverse circulation valve applied in layer-by-layer filling anti-sand tool,
With solve the problems, such as reverse circulation valve can not close cause sand control pipe sand to bury, sand card, reduce sand control construction risk.
In order to solve the above-mentioned technical problem, the utility model embodiment provides a kind of apply in layer-by-layer filling anti-sand tool
In reverse circulation valve, including main body, positioning sleeve and inner sliding sleeve, the positioning sleeve be set in the outside of the main body, the interior cunning
Set is nested in the inside of the main body, and the inner sliding sleeve is fixedly connected with the positioning sleeve, sets in the inner cavity of the reverse circulation valve
It is equipped with the support rod being located above the inner sliding sleeve, occluding body, the occluding body and the support are arranged on the support rod
Be provided with elastic mechanism between the upper end of bar, under filling state, the occluding body abutted with the top of the inner sliding sleeve so that
The elastic mechanism is in compressive state, and during upper lifting pipe post reacting cycle, the positioning sleeve drives the inner sliding sleeve to transport downwards
Dynamic, under the promotion of the elastic mechanism, the occluding body is moved downward so that the reverse circulation valve is closed.
Optionally, under the reverse circulation valve closed state, the occluding body is abutted with the top of the inner sliding sleeve, described
There is the first gap between inner sliding sleeve and the main body inner wall, be provided with intercommunicating pore in the upper portion side wall of the inner sliding sleeve, it is described
There are the second gap between occluding body and the main body inner wall, the inner cavity of the reverse circulation valve passes through the intercommunicating pore, described the
One gap is connected to second gap.
Optionally, the main body has the first inner wall and the second inner wall positioned at upper end, and the size of second inner wall is big
In first inner wall, between the inner sliding sleeve and first inner wall, second gap is located in first gap
Between the occluding body and first inner wall, in stowing operation, the intercommunicating pore is located at the area except first inner wall
The inner cavity in domain, the reverse circulation valve is connected to by the intercommunicating pore.
Optionally, the stage portion of diameter diminution, the lower end of the positioning sleeve are provided in the lower external face of the main body
It is provided with lock ring, when the positioning sleeve moves downward so that the lock ring reaches the stage portion, the lock ring shrinks and blocks
In the stage portion.
Optionally, the inner sliding sleeve is fixedly connected with the positioning sleeve by screw, is provided on the side wall of the main body
Long hole corresponding with the screw moving range.
Optionally, the first sealing ring positioned at the long hole two sides is provided between the inner sliding sleeve and the main body inner wall
With the second sealing ring.
Optionally, there is the elastic claw of protrusion, during upper lifting pipe post reacting cycle, the elastic claw on the positioning sleeve
The sealing drum for touching filling sliding sleeve makes the positioning sleeve that inner sliding sleeve be driven to move downward.
Optionally, the positioning sleeve, which is fixed on the outer wall of the main body by shear screw, makes the reverse circulation valve
It is in the open state, during upper lifting pipe post reacting cycle, the elastic claw encounter filling sliding sleeve sealing drum move downward and
Cut the shear screw.
Optionally, the reverse circulation valve further includes sealing unit, and one end of the sealing unit and second inner wall are close
Envelope connection, the internal diameter of the sealing unit are greater than the internal diameter of first inner wall.
Optionally, the reverse circulation valve further includes the limit sleeve for fixing the support rod, the lower end of the limit sleeve
It is fastened on the junction of the main body Yu the sealing unit.
The reverse circulation valve of the utility model embodiment, during upper lifting pipe post reacting cycle, by the promotion of elastic mechanism
So that occluding body movement is to close reverse circulation valve, the closing process of the reverse circulation valve not will receive the influence of hole deviation for effect,
Hole deviation is more than that occluding body still can be pushed to move for elastic mechanism so that reverse circulation valve closing, guarantees in 60 degree or even horizontal well
Reacting cycle displacement fluid will not miss avoided to stratum sand control pipe sand bury, sand card phenomenon, greatly reduce sand control construction
Risk.
Other features and advantages of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages can pass through
Specifically noted structure is achieved and obtained in the specification, claims and drawings.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solutions of the utility model, and constitutes part of specification,
It is used to explain the technical solution of the utility model together with embodiments herein, not constitute to technical solutions of the utility model
Limitation.
Fig. 1 is that the utility model embodiment applies the cross section structure of the reverse circulation valve in layer-by-layer filling anti-sand tool to illustrate
Figure；
Fig. 2 is structural schematic diagram when reverse circulation valve shown in Fig. 1 is in close state；
Fig. 3 is the enlarged diagram of part A in Fig. 2.
Description of symbols:
1-sealing unit；2-main bodys；3-limit sleeves；
4-positioning sleeves；5-inner sliding sleeves；6-lock ring lids；
7-lock rings；8-lower contacts；9-lower covers；
14-screws；15-shear screws；16-occluding bodies；
18-elastic mechanisms；19-support rods；21-the first inner wall；
22-the second inner wall；23-long holes；24-stage portions；
25-the first gap；26-the second gap；41-elastic claws；
51-intercommunicating pores；131-the first sealing ring；132-the second sealing ring.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with attached drawing to this
The embodiment of utility model is described in detail.It should be noted that in the absence of conflict, embodiment in the application and
Feature in embodiment can mutual any combination.
The technology contents of the utility model will be discussed in detail by specific embodiment below.
Fig. 1 is that the utility model embodiment applies the cross section structure of the reverse circulation valve in layer-by-layer filling anti-sand tool to illustrate
Figure.Reverse circulation valve shown in fig. 1 is in the open state.As shown in Figure 1, the circulating valve includes main body 2, positioning sleeve 4 and inner sliding sleeve
5, positioning sleeve 4 is set in the outside of main body 2, and inner sliding sleeve 5 is nested in the inside of main body 2.Inner sliding sleeve 5 is fixedly connected with positioning sleeve 4.
Support rod 19 is provided in the inner cavity of reverse circulation valve, support rod 19 is located at the top of inner sliding sleeve 5.Closure is arranged on support rod 19
Body 16 is provided with elastic mechanism 18 between occluding body 16 and the upper end of support rod 19.Occluding body 16 is abutted with the top of inner sliding sleeve 5
So that elastic mechanism 18 is in compressive state.During upper lifting pipe post reacting cycle, positioning sleeve 4 drives inner sliding sleeve 5 to move downward,
Under the promotion of elastic mechanism 18, occluding body 16 is moved downward so that reverse circulation valve is closed.
The reverse circulation valve of the utility model embodiment, during upper lifting pipe post reacting cycle, by pushing away for elastic mechanism 18
Movement is used so that the movement of occluding body 16 is to close reverse circulation valve, and the closing process of the reverse circulation valve not will receive the shadow of hole deviation
It rings, is more than in 60 degree or even horizontal well in hole deviation, elastic mechanism 18 still can push the movement of occluding body 16 so that reverse circulation valve
Close, guarantee reacting cycle displacement fluid will not miss avoided to stratum sand control pipe sand bury, sand card phenomenon, greatly reduce
The risk of sand control construction.
Fig. 2 is structural schematic diagram when reverse circulation valve shown in Fig. 1 is in close state.Fig. 3 is the amplification of part A in Fig. 2
Schematic diagram.As shown in Figures 2 and 3, under reverse circulation valve closed state, occluding body 16 is still abutted with the top of inner sliding sleeve 5, interior
There is the first gap 25 between 2 inner wall of sliding sleeve 5 and main body, be provided with intercommunicating pore 51, occluding body 16 in the upper portion side wall of inner sliding sleeve 5
There is the second gap 26 between 2 inner wall of main body, the inner cavity of reverse circulation valve passes through intercommunicating pore 51, the first gap 25 and the second gap
26 connections.It is easily understood that the usual very little in the first gap 25 and the second gap 26, therefore, intercommunicating pore 51,25 and of the first gap
Micro- drain structure is collectively formed in second gap 26.During upper lifting pipe post reacting cycle, a small amount of liquid is leaked out by micro- drain structure, is kept away
When having exempted from above to mention reacting cycle the problem of pumping formation, while liquid lock effect is avoided, so that the movement of upper lifting pipe post reacting cycle is more held
Easily.
In the present embodiment, there is also gap between occluding body 16 and support rod 19, which can also form micro- drain structure
A part, a small amount of liquid can also gap between occluding body 16 and support rod 19 leak out.
In the present embodiment, as shown in figure 3, the upper end of the medial surface of inner sliding sleeve 5 has an oblique seat surface 52, occluding body 16 it is outer
Surface is connected on oblique seat surface 52, to realize that occluding body 16 and the top of inner sliding sleeve 5 abut.It is easily understood that in order to make
Obtaining occluding body 16 can slide along support rod 19, and there are minim gap, oblique seat surfaces 52 between usual occluding body 16 and support rod 19
Setting certain guiding role can be provided for the movement of occluding body 16, guarantee that occluding body 16 can accurately be connected to inner sliding sleeve
5 top prevents from leading to poor sealing between occluding body 16 and inner sliding sleeve 5 since occluding body 16 deviates.
The reverse circulation valve further includes sealing unit 1 and lower contact 8.Sealing unit 1 and lower contact 8 respectively with main body 2 two
End cap connects in succession.Main body 2 has the first inner wall 21 and the second inner wall 22 positioned at upper end, and the size of the second inner wall 22 is greater than first
The size of inner wall 21 is connected between second inner wall 22 and the first inner wall 21 by tapered wall transition.The lower end of sealing unit 1 and the
Two inner walls 22 are tightly connected.The internal diameter of sealing unit 1 is greater than the internal diameter of the first inner wall 21.Under the upper end of lower contact 8 and main body 2
End is tightly connected.The lower end of lower contact 8 is connect with lower cover 9.
In reverse circulation valve closed state, as shown in Figures 2 and 3, inner sliding sleeve 5 is nested in the inside of main body 2, thus, first
Gap 25 is located between inner sliding sleeve 5 and the first inner wall 21, and the second gap 26 is located between occluding body 16 and the first inner wall 21.Anti-
It recycles in the valve opening state, that is, stowing operation, as shown in Figure 1, intercommunicating pore 51 is located at the region except the first inner wall 21, at this point, instead
The inner cavity of circulating valve is connected to by intercommunicating pore 51.
Liquid is leaked out between inner sliding sleeve 5 and main body 2 in order to prevent, is provided between 2 inner wall of inner sliding sleeve 5 and main body
One sealing ring 131 and the second sealing ring 132.In the present embodiment, the first sealing ring 131 and the second sealing ring 132 are arranged at
On the outer surface of inner sliding sleeve 5, the first sealing ring 131 and the second sealing ring 132 make close between inner sliding sleeve 5 and the first inner wall 21
Envelope avoids first gap 25 leakage of the liquid for flowing through reverse circulation valve between inner sliding sleeve 5 and the first inner wall 21.
As shown in Figure 1, positioning sleeve 4 is set in the outside of main body 2, positioning sleeve 4 is fixed on main body 2 by shear screw 15
On outer wall.It can further be seen from figure 1 that positioning sleeve 4 is fixedly connected with inner sliding sleeve 5 by screw 14, in order to avoid main body 2 is to interior
The movement of sliding sleeve 5 has an impact, and long hole 23 is provided on the side wall of main body 2, and long hole 23 is corresponding with the moving range of screw 14.
Screw 14 being arranged circumferentially along inner sliding sleeve 5, correspondingly set long hole 23 quantity and position.Long hole 23 is located at first
Between sealing ring 131 and the second sealing ring 132, thus, liquid will not be revealed from long hole 23.Positioning sleeve 4 and inner sliding sleeve 5 pass through
Screw 14 across long hole 23 is fixedly connected, thus, inner sliding sleeve 5 is fixed on position as shown in Figure 1, so that at reverse circulation valve
In opening state.In Fig. 1, the upper end of inner sliding sleeve 5 is protruded except the first inner wall 21.Intercommunicating pore 51 is upper close to inner sliding sleeve 5
End, state shown in Fig. 1, intercommunicating pore 51 are located at except the first inner wall 21, and the inner cavity of reverse circulation valve is connected to by intercommunicating pore 51.
Reverse circulation valve further includes the occluding body 16 positioned at inner cavity, and in the present embodiment, occluding body 16 is steel ball, in other realities
It applies in example, occluding body can also be the other shapes such as cone.Support rod 19, occluding body 16 are provided in the inner cavity of reverse circulation valve
It is set on support rod 19.Compressible elastomeric mechanism 18, example are provided between the upper end of occluding body 16 and the upper end of support rod 19
Such as spring.Under the action of elastic mechanism 18, occluding body 16 can be moved along support rod 19, thus, support rod 19 is to block
The movement of body 16 provides guiding role, guarantees that occluding body 16 can accurately close reverse circulation valve.The lower surface of occluding body 16 with
The upper surface abutting contact of inner sliding sleeve 5, under the withstanding effect of inner sliding sleeve 5, elastic mechanism 18 is in compressive state, such as Fig. 1 institute
Show.
Under opening state shown in Fig. 1, load fluid enters washing pipe from the sealing pipe with holes being located at below reverse circulation valve, from
Reverse circulation valve lower end enters in reverse circulation valve.The upper of reverse circulation valve is flow to by intercommunicating pore 51 into the load fluid in reverse circulation valve
End as shown in Figure 1, entering the small annular space of packing tool to flow through reverse circulation valve, and is returned and is portalled into big annular space, returns out well
Mouthful.In the process, reverse circulation valve provides unobstructed fluid channel for returning fluid's body.
As depicted in figs. 1 and 2, there is the elastic claw 41 of protrusion on the outer surface of positioning sleeve 4.In upper lifting pipe post reacting cycle mistake
Cheng Zhong, elastic claw 41 can encounter the sealing drum of filling sliding sleeve, to cut shear screw 15.After shear screw 15 is cut,
Under the interaction of elastic claw and sealing drum, positioning sleeve 4 is moved downward along the axial direction of main body 2.Due to inner sliding sleeve 5 and positioning
Set 4 is fixedly connected by screw 14, thus, inner sliding sleeve 5 can also move downwardly together with positioning sleeve 4.Long hole 23 and screw 14
Moving range be adapted, therefore, positioning sleeve 4 can drive inner sliding sleeve 5 to move down along place, ensure that the suitable of reverse circulation valve
Benefit is closed.
During inner sliding sleeve 5 is moved down with positioning sleeve 4, under the action of elastic mechanism 18, occluding body 16 along
Support rod 19 moves down, so that the lower surface of occluding body 16 is connected to always on the upper surface of inner sliding sleeve 5.In the present embodiment
In, as shown in Fig. 2, the upper end of inner sliding sleeve 5 is located in 21 range of the first inner wall when reverse circulation valve is in close state.At this
In embodiment, the maximum gauge of occluding body 16 less than the first inner wall 21 size, therefore, in the impetus of elastic mechanism 18
Under, occluding body 16 enters in 21 range of the first inner wall and is connected on the upper surface of inner sliding sleeve 5 always.Under Fig. 2 state, connection
Hole 51 is stopped by the first inner wall 21, realizes the closing of reverse circulation valve.
In the present embodiment, occluding body 16 realizes the closing of reverse circulation valve under the impetus of elastic mechanism 18, no
It realizes and closes by the gravity of steel ball again, thus, the closing process of the reverse circulation valve not will receive the influence of hole deviation, super in hole deviation
60 degree are crossed even in horizontal well, elastic mechanism 18 still can push the movement of occluding body 16 with guarantee occluding body 16 always with interior cunning
The upper surface of set 5 effectively abuts, and then realizes the closing of reverse circulation valve, guarantees that reacting cycle displacement fluid will not be missed to stratum, keeps away
The sand for having exempted from sand control pipe buries, sand card phenomenon, greatly reduces the risk of sand control construction.
In the closed state of reverse circulation valve, as shown in Fig. 2, due to occluding body 16 diameter less than the first inner wall 21 ruler
It is very little, the first gap 25 is formed between the outer wall of inner sliding sleeve 5 and the first inner wall 21 of main body 2, therefore, still has a small amount of liquid
By the second gap 26 leakage between intercommunicating pore 51, the first gap 25, occluding body 16 and main body 2, thus attached in occluding body 16
Closely form micro- drain structure.During upper lifting pipe post reacting cycle, a small amount of liquid is leaked out by micro- drain structure, is avoided and is mentioned counter follow
When ring the problem of pumping formation, while liquid lock effect is avoided, so that the movement of upper lifting pipe post reacting cycle is easier.
After reverse circulation valve is closed, in order to avoid external force causes inner sliding sleeve 5 and the upward play of positioning sleeve 4 to lead to reverse circulation valve
Close it is unstable, as depicted in figs. 1 and 2, be provided on the lower end outer surface of main body 2 diameter diminution stage portion 24.Positioning sleeve 4
Lower end be provided with lock ring 7 and the lock ring lid 6 for covering lock ring 7.When positioning sleeve 4 moves downward until lock ring 7 moves to platform
When at rank portion 24, lock ring 7 shrinks and is stuck in stage portion 24, to prevent the upward play of positioning sleeve 4, ensure that reverse circulation valve closes
The stability of closed state.
It can further be seen from figure 1 that in the present embodiment, reverse circulation valve further includes limit sleeve 3, support rod 19 passes through limit
Set 3 is arranged in the inner cavity of sealing unit 1, and the lower end of limit sleeve 3 is fastened on the junction of main body 2 Yu sealing unit 1, thus
It ensure that the stability of limit sleeve 3, and then ensure that the stability of support rod 19.The internal diameter of limit sleeve 3 is greater than the first inner wall 21
Diameter, therefore, in the opening state of reverse circulation valve, when region except the upper end of inner sliding sleeve 5 is located at the first inner wall 21, even
Through-hole 51 not will receive the interference of limit sleeve 3 and influence to open effect.
In the description of the utility model embodiment, it is to be understood that the instruction such as term "inner", "outside", "upper", "lower"
Orientation or positional relationship be to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore should not be understood as limiting the present invention.
In the description of the utility model embodiment, it should be noted that unless otherwise clearly defined and limited, term
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Although embodiment disclosed by the utility model is as above, the content only the utility model for ease of understanding
And the embodiment used, it is not intended to limit the utility model.Technical staff in any the utility model fields,
Under the premise of not departing from spirit and scope disclosed by the utility model, it can be carried out in the form and details of implementation any
Modification and variation, but the scope of patent protection of the utility model, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of reverse circulation valve applied in layer-by-layer filling anti-sand tool, which is characterized in that including main body, positioning sleeve and interior cunning
Set, the positioning sleeve are set in the outside of the main body, and the inner sliding sleeve is nested in the inside of the main body, the inner sliding sleeve and
The positioning sleeve is fixedly connected, the support rod being provided with above the inner sliding sleeve in the inner cavity of the reverse circulation valve, described
It is arranged with occluding body on support rod, is provided with elastic mechanism between the occluding body and the upper end of the support rod, in filling shape
Under state, the occluding body is abutted with the top of the inner sliding sleeve so that the elastic mechanism is in compressive state, and upper lifting pipe post is anti-
In cyclic process, the positioning sleeve drives the inner sliding sleeve to move downward, under the promotion of the elastic mechanism, the occluding body
It moves downward so that the reverse circulation valve is closed.
2. reverse circulation valve according to claim 1, which is characterized in that under the reverse circulation valve closed state, the envelope
Stifled body is abutted with the top of the inner sliding sleeve, has the first gap, the interior cunning between the inner sliding sleeve and the main body inner wall
Intercommunicating pore is provided in the upper portion side wall of set, it is described counter to follow there are the second gap between the occluding body and the main body inner wall
The inner cavity of ring valve is connected to by the intercommunicating pore, first gap with second gap.
3. reverse circulation valve according to claim 2, which is characterized in that the main body has the first inner wall and positioned at upper end
Second inner wall, the size of second inner wall are greater than first inner wall, first gap be located at the inner sliding sleeve with it is described
Between first inner wall, second gap is between the occluding body and first inner wall, in stowing operation, the company
Through-hole is located at the region except first inner wall, and the inner cavity of the reverse circulation valve is connected to by the intercommunicating pore.
4. reverse circulation valve according to claim 1, which is characterized in that be provided with diameter in the lower external face of the main body
The lower end of the stage portion of diminution, the positioning sleeve is provided with lock ring, when the positioning sleeve moves downward so that the lock ring reaches
When the stage portion, the lock ring shrinks and is stuck in the stage portion.
5. reverse circulation valve according to claim 1, which is characterized in that the inner sliding sleeve and the positioning sleeve are solid by screw
It is fixed to connect, long hole corresponding with the screw moving range is provided on the side wall of the main body.
6. reverse circulation valve according to claim 5, which is characterized in that be arranged between the inner sliding sleeve and the main body inner wall
There are the first sealing ring and the second sealing ring positioned at the long hole two sides.
7. reverse circulation valve according to claim 1, which is characterized in that there is the elastic claw of protrusion on the positioning sleeve,
During upper lifting pipe post reacting cycle, the sealing drum that the elastic claw encounters filling sliding sleeve make the positioning sleeve drive inner sliding sleeve to
Lower movement.
8. reverse circulation valve according to claim 7, which is characterized in that the positioning sleeve is fixed on described by shear screw
Make the reverse circulation valve in the open state on the outer wall of main body, during upper lifting pipe post reacting cycle, the elastic claw
The sealing drum for encountering filling sliding sleeve moves downward and cuts the shear screw.
9. reverse circulation valve according to claim 3, which is characterized in that the reverse circulation valve further includes sealing unit, described
One end of sealing unit and second inner wall are tightly connected, and the internal diameter of the sealing unit is greater than the interior of first inner wall
Diameter.
10. reverse circulation valve according to claim 9, which is characterized in that the reverse circulation valve further includes for described in fixation
The limit sleeve of support rod, the lower end of the limit sleeve are fastened on the junction of the main body Yu the sealing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821853226.6U CN209354085U (en) | 2018-11-09 | 2018-11-09 | A kind of reverse circulation valve applied in layer-by-layer filling anti-sand tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821853226.6U CN209354085U (en) | 2018-11-09 | 2018-11-09 | A kind of reverse circulation valve applied in layer-by-layer filling anti-sand tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209354085U true CN209354085U (en) | 2019-09-06 |
Family
ID=67783336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821853226.6U Active CN209354085U (en) | 2018-11-09 | 2018-11-09 | A kind of reverse circulation valve applied in layer-by-layer filling anti-sand tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209354085U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630049A (en) * | 2018-11-09 | 2019-04-16 | 中国海洋石油集团有限公司 | A kind of reverse circulation valve |
| CN111734362A (en) * | 2020-07-01 | 2020-10-02 | 荆州市赛瑞能源技术有限公司 | Large-drift-diameter sand prevention process for filling gravel layer at a time |
| CN114809986A (en) * | 2022-04-12 | 2022-07-29 | 中海油田服务股份有限公司 | Double-pipeline control hydraulic sliding sleeve and well completion tool |
-
2018
- 2018-11-09 CN CN201821853226.6U patent/CN209354085U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630049A (en) * | 2018-11-09 | 2019-04-16 | 中国海洋石油集团有限公司 | A kind of reverse circulation valve |
| CN109630049B (en) * | 2018-11-09 | 2021-04-06 | 中国海洋石油集团有限公司 | Reverse circulation valve |
| CN111734362A (en) * | 2020-07-01 | 2020-10-02 | 荆州市赛瑞能源技术有限公司 | Large-drift-diameter sand prevention process for filling gravel layer at a time |
| CN114809986A (en) * | 2022-04-12 | 2022-07-29 | 中海油田服务股份有限公司 | Double-pipeline control hydraulic sliding sleeve and well completion tool |
| CN114809986B (en) * | 2022-04-12 | 2024-02-13 | 中海油田服务股份有限公司 | Double-pipeline control hydraulic sliding sleeve and well completion tool |
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