CN207161045U - Fluid pressure type exempts to bore stage cementing device - Google Patents
Fluid pressure type exempts to bore stage cementing device Download PDFInfo
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- CN207161045U CN207161045U CN201720898436.6U CN201720898436U CN207161045U CN 207161045 U CN207161045 U CN 207161045U CN 201720898436 U CN201720898436 U CN 201720898436U CN 207161045 U CN207161045 U CN 207161045U
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- cementing device
- stage cementing
- shear pin
- closing
- plug
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Abstract
Exempt to bore stage cementing device the utility model proposes a kind of fluid pressure type, including：Top connection；Stage cementing device body, which is provided with circulation port, and upper end connects the top connection；Set is closed, it is located in the body and is connected by closing shear pin with the body；Sliding sleeve, it is located at described close in set and by slipping shear pin and the closing set connection；Set is opened, it is located in the body and closes set lower section positioned at described, and connects the body by opening shear pin；Under the first setting pressure effect, the set of opening can make the second place of circulation port unlatching from the first position of circulation bore closure is moved to；And shut-off plug, close set cooperation with described and build the pressure, under the 3rd setting pressure effect, slip shear pin when being cut, shut-off plug drives sliding sleeve from the body interior Automatic-falling.The fluid pressure type, which exempts from brill stage cementing device, can be used for fraclional well cementing, be bored after completion without lower drilling tool except unnecessary annex inside stage cementing device.
Description
Technical field
It the utility model is related to cementing technology field, and in particular to the fluid pressure type used during a kind of underground well cementation exempts to bore classification
Cementing device.
Background technology
, it is necessary to which tripping in sleeve pipe, carries out well cementing operation after Oil/gas Well finishing drilling.Can solve depth using two-stage cementing technology
Some technical barriers in well, ultradeep well cementing operation, a such as cementing amount is big, and engineering time length, formation fracture pressure is low,
The problems such as cement is returned less than design well depth.In addition, two-stage cementing technology is also an option that optimal cement sealing well section, section
About cement, reduce well cementation cost.
Existing stage cementing device is broadly divided into mechanical, fluid pressure type, machinery according to structure and exempts from brill formula.Mechanical classification
Cementing device need to be used cooperatively with opening plug, and operation principle is to launch to open plug in well head, reach stage cementing when opening plug
Sealing is internally formed with it during device, realization, which builds the pressure, cuts shear pin, and inner sleeve movement, circulation port, which is realized, to be opened, and is passed through after two level well cementation
Well head puts into shut-off plug again, acts on the inner sleeve of stage cementing device, realizes that shear pin is closed in the cutting that builds the pressure again, inner sleeve continues to move
Dynamic, circulation port, which is realized, closes.Fluid pressure type stage cementing device needs to realize sealing in pipe string before opening circulation port, and operation principle is
Pipe string interior sealing builds the pressure, and opening obturating plug top and bottom has ring surface product moment, when pressure reaches certain value, as caused by difference in areas
Active force cuts shear pin, opens obturating plug movement, and circulation port, which is realized, to be opened, its closing motion with it is mechanical；Machinery exempts from brill formula
Stage cementing device is realized and closed by one layer of slippage set of more increases in the inner sleeve of stage cementing device on the basis of mechanical
Close rear shut-off plug and slipped with opening plug with slippage set at stage cementing device, then fall into shaft bottom by gravity.Above-mentioned classification
Cementing device has the following disadvantages：
(1) tripping in drilling tool brill is required to after mechanically being cemented the well with fluid pressure type stage cementing device and removes cementing device inner sleeve
Annex, increase duty cycle and operating cost；
(2) internal structure is complicated, adds processing and manufacturing difficulty, reduces stability.
Utility model content
For some or all of of the above-mentioned technical problem in the presence of prior art, the utility model proposes one kind
Fluid pressure type exempts to bore stage cementing device, and the fluid pressure type, which exempts from brill stage cementing device, can be used for fraclional well cementing, need not lower brill after completion
Tool is bored except unnecessary annex inside stage cementing device.
In order to realize above goal of the invention, exempt to bore classification the utility model proposes a kind of fluid pressure type with following structure
Cementing device, including：
Top connection；
Stage cementing device body, which is provided with circulation port, and upper end connects the top connection；
Set is closed, it is located in the body and is connected by closing shear pin with the body；
Sliding sleeve, it is located at described close in set and by slipping shear pin and the closing set connection；
Set is opened, it is located in the body and closes set lower section positioned at described, and connects described by opening shear pin
Body；Under the first setting pressure effect, the set of opening can open circulation port from the first position of circulation bore closure is moved to
The second place opened；And
Shut-off plug, built the pressure with the closing set cooperation, under the 3rd setting pressure effect, when slippage shear pin is cut, pass
Occlusion drives sliding sleeve from the body interior Automatic-falling.
Fluid pressure type of the present utility model exempts to bore stage cementing device, and under circulation port opening, classification water filling can be achieved
Mud is cemented the well.And after completion, by building the pressure in the 3rd setting pressure, slippage shear pin can be voluntarily cut, realizes shut-off plug and cunning
The Automatic-falling of set, full-bore is formed, thus bored without lower drilling tool except unnecessary annex inside stage cementing device.
In one embodiment, the set of opening is connected by opening shear pin with the body, in the described first setting
Under pressure effect, the opening shear pin is cut, and the set of opening is moved to the second place from first position under pressure.
In one embodiment, under the second setting pressure effect, when the closing shear pin is cut, the shut-off plug
The sliding sleeve and the closing set is driven to move to from the first operating position above the circulation port and followed described in closing
Second operating position of annular distance.
In one embodiment, the body and it is described close set between, the body with it is described open cover, described
Seal is equipped between body and the top connection, the body and the lower contact.Meet seal request during different conditions.
In one embodiment, the body internal surface is provided with the first jump ring position, and the closing is put provided with the first card
Spring, when the closing set is moved to the second operating position, first jump ring is connected at the first jump ring position of the body.
First jump ring can prevent close set retract, close set can not retract thus circulation port can be constantly in closed mode.
In one embodiment, pressure transmission hole is additionally provided with the body, the lower end periphery face for opening set is provided with ring
Shape groove, the body correspond to the annular groove location and are provided with shoulder；When the opening set is located at first position, the ring of its lower end
Shape groove connects with the pressure transmission hole；When the opening set is located at the second place, the annular groove upper surface is connected to described
The pressure transmission hole is blocked on shoulder.
In one embodiment, the body is provided with the second jump ring position close to the pressure transmission hole, and the opening is put
Provided with the second jump ring, when the opening set is located at the second place, second jump ring is connected to the second of the body
At jump ring position.Second jump ring can prevent that opening set retracts, and ensures that follow-up cementing device well cementing operation is smoothed out.
In one embodiment, the shut-off plug be the horn mouth of the lower bands conical surface, top be the structure with inclined-plane.
In one embodiment, the interior lower end face of the sliding sleeve is provided with the step to match with the shut-off plug bottom
Face.
In one embodiment, the inclined-plane on the shut-off plug top has certain deformation plasticity.
Compared with prior art, the utility model has the advantage of：
Fluid pressure type of the present utility model exempts to bore stage cementing device by way of hydraulic pressure after fraclional well cementing terminates, classification
Retained inside cementing device without annex, realize full-bore, removed operation so as to without lower drilling tool bore, simplify construction process,
Efficiency of construction is improved, reduces expense.And simple in construction, easily operated, safety and reliability.In addition, pass through hydraulic way
Circulation port is opened, the scope of application can be expanded.
Brief description of the drawings
Preferred embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, in figure：
It is stage cementing device original state structural representation of the present utility model shown in Fig. 1；
It is structural representation of the stage cementing device of the present utility model when circulation port is opened shown in Fig. 2；
It is that the shut-off plug of stage cementing device of the present utility model enters sliding sleeve status architecture schematic diagram shown in Fig. 3；
It is the circulation port closed mode structural representation of stage cementing device of the present utility model shown in Fig. 4；
It is that stage cementing device sliding sleeve of the present utility model slips status architecture schematic diagram shown in Fig. 5；
It is status architecture schematic diagram after stage cementing device sliding sleeve of the present utility model slips shown in Fig. 6；
The structural representation of stage cementing device shut-off plug therein of the present utility model shown in Fig. 7.
In figure, identical part uses identical reference.Accompanying drawing is not drawn according to the ratio of reality.
Embodiment
In order that the technical solution of the utility model and advantage are more clearly understood, below in conjunction with accompanying drawing to the utility model
Exemplary embodiment be described in more detail.Obviously, described embodiment is only a part of the present utility model
Embodiment, rather than the exhaustion of all embodiments.And in the case where not conflicting, embodiment and implementation in the utility model
Feature in example can be combined with each other.
Inventor during invention it is noted that it is existing mechanically with fluid pressure type stage cementing device after well cementation
It is required to tripping in drilling tool brill and removes cementing device inner sleeve annex, increases duty cycle and operating cost.And existing machinery formula and liquid
Stepped cementing device internal structure is complicated, adds processing and manufacturing difficulty, reduces stability.
The deficiency for more than, embodiment of the present utility model propose a kind of fluid pressure type and exempt to bore stage cementing device, below
Illustrate.
In one embodiment, as shown in Figures 1 to 7, it is main to exempt from brill stage cementing device for fluid pressure type of the present utility model
Including：Top connection 1, stage cementing device body 2, close set 5, sliding sleeve 11, open set 8, lower contact 10 and shut-off plug 12.Its
In, the both ends of top connection 1 are equipped with screw thread, its one end connection sleeve pipe, and the other end connects the upper end of body 2.The upper end of body 2 leads to
Cross internal thread and fastener to be fixedly connected with top connection 1, the lower end of body 2 is fixed by internal thread and fastener with lower contact 10
Connection.In addition, body 2 is provided with circulation port 7 and pressure transmission hole 13.
Fig. 1 shows that fluid pressure type of the present utility model exempts to bore the original state structural representation of stage cementing device.Wherein,
The inside that set 5 is connected to body 2 by closing shear pin 6 is closed, positioned at the top of circulation port 7.Set 8 is opened by opening shear pin 14
The inside of body 2 is connected to, positioned at the underface for closing set 5, blocks circulation port 7, now opens set 8 positioned at closure circulation port
7 first position.Sliding sleeve 11 is connected to the inside of closing set 5 by slipping shear pin 3.In addition, in order to ensure the close of original state
Sealing property, seal is equipped between body 2 and top connection 1, between body 2 and closing set, between body 2 and opening set 8.Close
Close between set 5 and sliding sleeve 11 and be provided with seal.
In addition, in one embodiment, as shown in figure 1, the upper inner for being located at pressure transmission hole 13 in body 2 is provided with the second card
Spring position.In Fig. 1 state, the second jump ring position connects with pressure transmission hole 13.Open set 8 and be provided with the second jump ring 9, now the second card
Spring 9 is compressed in the neck for opening set 8.Open 8 lower ends of set and the side of body 2 is provided with shoulder, the shoulder to beat
Open and form a chamber between set 8 and body 2.
By taking two level cementing device as an example.G.I.H is finished in stage cementing device connection, one-level cementing device is completed to touch
After pressure, borehole pressure rises rapidly.Because set 8 of checking card has a different pressures bearing plane, therefore open when covering 8 and being built the pressure inside pipe
By downward active force.When pressure reaches the first setting value, open the opening that the hydraulic coupling suffered by set 8 is cut on shell and cut
Nail 14, open set 8 and be moved downwards, spill circulation port 7.
Fluid pressure type of the present utility model exempts to bore the state diagram when circulation port 7 of stage cementing device is opened as shown in Figure 2.
Now open shear pin 14 to be cut, open set 8 and be moved to the second place.8 shoulder close to the side of body 2 of set is opened to move down
Abut on the shoulder of the inner side of body 2.It is located at the second jump ring 9 opened on set 8 and clamping is opened at the second jump ring position of body 2
In the inside of body 2, opening set 8 will not block circulation port 7 again because of rollback in the presence of the second jump ring 9.
After circulation port 9 is opened, circulation canal is established inside and outside pipe, carries out two level cementing job.After cemented up, input is closed
Occlusion 12, replace mud.When mud is replaced until shut-off plug reaches stage cementing device position, shut-off plug 12 is first pressed into cunning
The inside of set 11 is until its chock plug is abutted on the step surface inside sliding sleeve 11.Continue to replace shut-off plug 12, pressure is passed by chock plug
To sliding sleeve 11, then it is delivered to by the slippage shear pin 3 installed between sliding sleeve 11 and shut-off plug 12 on closing set 5.As Fig. 3 shows
The shut-off plug 12 for having gone out stage cementing device of the present utility model enters the status architecture schematic diagram of sliding sleeve 11, in the state, closes
The chock plug of plug 12 is connected on the shoulder inside sliding sleeve 11, and pressure is passed by shut-off plug 12 through sliding sleeve 11, slippage shear pin 3, closing set 5
Pass and close shear pin 6.
When reaching the second setting pressure, close set 5 and cut closing shear pin 6.Shut-off plug 12 is with sliding sleeve 11 and closes set 5
Slide downwardly together until closing circulation port 7.As Fig. 4 shows the quilt of closing shear pin 6 of stage cementing device of the present utility model
Cut the closed mode structural representation of Posterior circle hole 7, in the state, close shear pin 6 and cut, closed shown in set 5 from Fig. 3
First operating position moves down into the second operating position shown in Fig. 4.At the second place, circulation port 7 is by closure in closing
State, the lower end for closing set 5 abut opening set 8.The first jump ring position that first jump ring 4 enters in body 2, in the work of the first jump ring
Under, closing set 5 will not retract, thus circulation port 7 is in the state closed always, smoothly completes two level well cementing operation.
Then, continue to build the pressure in pipe string.When reaching the 3rd setting pressure, sliding sleeve 11 and the cunning closed between set 5 are cut
De- shear pin 3.The shut-off plug 12 internal with it of sliding sleeve 11 slips from the inside of stage cementing device body 2, as Fig. 5 shows this practicality
New stage cementing device sliding sleeve slips status architecture schematic diagram.In a state, slip shear pin 3 to be cut, sliding sleeve 11
Internal shut-off plug 12 is slipped to the bottom of body 2 with it.Then under gravity, the shut-off plug 12 internal with it of sliding sleeve 11
Progress freely falling body drops to shaft bottom and realizes that stage cementing device exempts to bore the effect except contents in pipe string, as Fig. 6 is shown
Status architecture schematic diagram after stage cementing device sliding sleeve of the present utility model slips, in the figure, the pass internal with it of sliding sleeve 11
Occlusion 12 has been detached from stage cementing device body 2.In addition, in figure 6, body 2 and top connection 1, body 2 and lower contact 10,
Body 2 and the seal closed between set 5, body 2 and opening set 8 still function as effect, so as to ensure the sealing under the state
It is required that.
In one embodiment, as shown in fig. 7, showing stage cementing device of the present utility model shut-off plug 12 therein
Structural representation.In the figure, shut-off plug 12 be the horn mouth of the lower bands conical surface, top be the structure with inclined-plane.Due to cunning
The interior lower end face of set 11 is provided with step surface, and the bottom of shut-off plug 12 and the interior step face of sliding sleeve 11 match.It is preferable at one
In embodiment, the frustum face on the top of shut-off plug 12 has certain deformation toughness.Shut-off plug 12 i.e. shown in Fig. 7 is outwardly directed
Frustum face is made by the material with certain deformation plastics, such as the top of shut-off plug 12 uses what quality of rubber materials was fabricated to
Inclined-plane or frustum face, the frustum face can deform upon when being connected to 11 inner surface of sliding sleeve, while the shape to keep relative stability.
Although having been described for preferred embodiment of the present utility model, those skilled in the art once know substantially
Creative concept, then other change and modification can be made to these embodiments.Therefore, appended claims are intended to be construed to wrap
Include preferred embodiment and fall into having altered and/or changing for the scope of the utility model, according to embodiment of the present utility model
The change and/or modification made should all be covered within the scope of protection of the utility model.
Claims (10)
1. a kind of fluid pressure type exempts to bore stage cementing device, it is characterised in that including：
Top connection；
Stage cementing device body, which is provided with circulation port, and upper end connects the top connection；
Set is closed, it is located in the body and is connected by closing shear pin with the body；
Sliding sleeve, it is located at described close in set and by slipping shear pin and the closing set connection；
Set is opened, it is located in the body and closes set lower section positioned at described, and connects the body by opening shear pin；
It is described to open that set circulation port opens the from being moved to the first position of circulation bore closure to make under first setting pressure effect
Two positions；And
Shut-off plug, built the pressure with the closing set cooperation, under the 3rd setting pressure effect, when slippage shear pin is cut, shut-off plug
Sliding sleeve is driven from the body interior Automatic-falling.
2. stage cementing device according to claim 1, it is characterised in that it is described open set by open shear pin with it is described
Body connect, described first setting pressure effect under, it is described opening shear pin cut, it is described open set under pressure from
First position is moved to the second place.
3. stage cementing device according to claim 2, it is characterised in that under the second setting pressure effect, the pass
When closing shear pin and being cut, the shut-off plug drives the sliding sleeve and the set of closing from the first work above circulation port
Position moves to the second operating position for closing the circulation port.
4. stage cementing device according to claim 3, it is characterised in that the body covers with the closing, described
Body and described open cover, are equipped with seal between the body and the top connection, the body and lower contact.
5. stage cementing device according to claim 4, it is characterised in that the body internal surface is provided with the first jump ring
Position, the closing are put provided with the first jump ring, when the closing set is moved to the second operating position, the first jump ring clamping
At the first jump ring position of the body.
6. stage cementing device according to any one of claim 1 to 5, it is characterised in that be additionally provided with the body
Pressure transmission hole, the lower end periphery face for opening set are provided with annular groove, and the body corresponds to the annular groove location and is provided with shoulder；When
When the opening set is located at first position, the annular groove of its lower end connects with the pressure transmission hole；When the set of opening is located at second
During position, the annular groove upper surface, which is connected on the shoulder, blocks the pressure transmission hole.
7. stage cementing device according to claim 6, it is characterised in that the body is provided with close to the pressure transmission hole
Second jump ring position, the opening are put provided with the second jump ring, when the opening set is located at the second place, second card
Spring is connected at the second jump ring position of the body.
8. stage cementing device according to claim 1, it is characterised in that the shut-off plug is the loudspeaker of the lower bands conical surface
Mouth, top are the structure with inclined-plane.
9. stage cementing device according to claim 8, it is characterised in that the interior lower end face of the sliding sleeve is provided with and institute
State the step surface of shut-off plug bottom matching.
10. stage cementing device according to claim 9, it is characterised in that the inclined-plane on the shut-off plug top has one
Fixed deformation plasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720898436.6U CN207161045U (en) | 2017-07-24 | 2017-07-24 | Fluid pressure type exempts to bore stage cementing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720898436.6U CN207161045U (en) | 2017-07-24 | 2017-07-24 | Fluid pressure type exempts to bore stage cementing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207161045U true CN207161045U (en) | 2018-03-30 |
Family
ID=61714062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720898436.6U Active CN207161045U (en) | 2017-07-24 | 2017-07-24 | Fluid pressure type exempts to bore stage cementing device |
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| Country | Link |
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| CN (1) | CN207161045U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827922A (en) * | 2020-07-17 | 2020-10-27 | 江苏赛维斯石油科技有限公司 | Drilling-free stage cementing device |
| CN113863893A (en) * | 2021-11-23 | 2021-12-31 | 北京泊溪科技有限责任公司 | Drilling-free stage cementing device |
| CN114658387A (en) * | 2020-12-23 | 2022-06-24 | 中国石油化工股份有限公司 | Stage cementing device for preventing secondary grouting from being closed in advance |
-
2017
- 2017-07-24 CN CN201720898436.6U patent/CN207161045U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827922A (en) * | 2020-07-17 | 2020-10-27 | 江苏赛维斯石油科技有限公司 | Drilling-free stage cementing device |
| CN114658387A (en) * | 2020-12-23 | 2022-06-24 | 中国石油化工股份有限公司 | Stage cementing device for preventing secondary grouting from being closed in advance |
| CN113863893A (en) * | 2021-11-23 | 2021-12-31 | 北京泊溪科技有限责任公司 | Drilling-free stage cementing device |
| CN113863893B (en) * | 2021-11-23 | 2023-10-20 | 北京泊溪科技有限责任公司 | Drilling-free stage cementing device |
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