CN206439023U - Packing element, packer and bridging plug with disc spring - Google Patents
Packing element, packer and bridging plug with disc spring Download PDFInfo
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- CN206439023U CN206439023U CN201621453840.4U CN201621453840U CN206439023U CN 206439023 U CN206439023 U CN 206439023U CN 201621453840 U CN201621453840 U CN 201621453840U CN 206439023 U CN206439023 U CN 206439023U
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- disc spring
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Abstract
The application is related to the packing element with disc spring, packer and the bridging plug used in field of sealing technology, more particularly to a kind of oil exploitation industry.Disc spring serves as the upper end of packing element, and disc spring includes：The mounting hole that bearing ring is surround；Outside fin, the first through hole is provided between each outside fin, outside fin tail end close to mounting hole is connected on bearing ring, outside fin head end away from mounting hole is mutually compressed with pars intermedia, and outside fin head end causes outside fin tail end to be higher than outside fin head end towards the direction extension away from mounting hole diagonally downward；When bearing ring bears axial compressive force, outside fin head end is compressed and expanded outwardly in radial directions by pars intermedia, when axial compressive force is increased to the first rated value, outside fin head end is mutually compressed with sleeve pipe, it is only necessary to which the hardness of adjustment outside fin can effectively prevent the generation of shoulder.
Description
Technical field
The application be related to used in field of sealing technology, more particularly to a kind of oil exploitation industry the packing element with disc spring,
Packer and bridging plug.
Background technology
Packer is a kind of key tool that oil field well recovers the oil, and is widely used in oil field dispensing, separate zone stimulation, layering and adopts
The several work such as oil, mechanical pipe water blockoff, packer needs to carry out the packing of annular space, to realize that oil gas is layered, and realizes annular space
The core component of packing is packing element.Bridging plug is also a kind of instrument of oil gas layering generally used in oil extraction operation.Packer and
The main distinction of bridging plug is, packer be usually pressure break, be acidified, look for the measure such as Lou to construct when staying in well temporarily, and bridge
Plug is temporarily or permanently to be stayed in measures such as sealing oil recoveries in well.Packer and central tube stay well simultaneously, mix that give up can
Individually to stay well, and bridging plug is then individually to stay well.Structurally, packer is hollow structure, can flow freely oil gas water,
And in bridging plug it is then solid construction.
As the instrument of Oil-gas Separation, packer and bridging plug are required for packing element, and packing element is used as sealed critical component, its matter
Amount directly affects the sealing effectiveness and service life of packer and bridging plug, and conclusive effect is played in packer and bridging plug.
Packing element is typically made of rubber type of material, therefore referred to as packing element.But packing element is only the technology art that agreement becomes social custom in a kind of industry
Language, the functional parts of sealing function are played for expression, and referring not only to packing element can only be made by rubber.When packing element bears one
Fixed pressure come promote its deformation be used for seal when, it is necessary to the deformability of packing element in itself be considered, if deformation deficiency can cause it
Sealing function can not be played；If deformation is excessive, packing element may be caused to be failed because of conquassation, lose recovery capability.Most of all,
When packing element is acted in underground by high-temperature steam, packing element is more that failing causes to lose by effect while HTHP
Go recovery capability.
9th phase in 2002《Petroleum machinery》Disclose《Packer compresses packing element " protrusion-dispelling " new construction》, wherein recording
Following content：" so-called protrusion-dispelling, exactly lays certain blocker ring, support member, limits device and guard member etc. in packing element end, uses
Packing element is protruded or flowed towards oil sets annular space when preventing and limiting packer setting "." because anti-lug structure is for covering
Annular gap between packer and sleeve pipe, during packer setting, once packing element deformation is contacted with casing wall, under load effect outside,
The outburst prevention device just unfolded annular space covered between packer and casing wall, prevents packing element towards prominent in this annular space, forces the packing element to be in
Respectively to uniform compression, the higher contact stress of packing element is produced and keeps, so as to obtain good sealing "." ... mainly have
Copper bowl curing type and two kinds of steel mesh or steel band curing type.The former is that the thick copper bowls of two 2mm are solidificated in into two end packing elements respectively
On certain end face, the latter is that thick 1mm or so steel mesh or steel band are solidificated on two end packing element end faces respectively ".
2013 first-phase《Oil field equipment》Disclose《Packer rubber barrel structure is improved and benefit analysis》Text
Chapter, wherein recording herein below：" string has 3 packing elements on conventional packer, is divided into the packing element physical dimension of upper, middle and lower 3
Identical and upper lower rubber cylinder is that long packing element type, middle packing element are 2 kinds of structure types of short rubber cylinder.Sent out by the research to traditional three packing elements structure
Existing, play main seal is upper packing element ".Also, carry out non-linear point by non linear finite element analysis software Abaqus
Analysis is drawn：" as axial load increases, axial compression amount also increases, and decrement increase is more apparent during beginning, and subsequent decrement increases
Slow down greatly, packing element deformation tends towards stability；With the increase of setting force, packing element gradually increases with casing-contact length.Packing element appearance
Cylinder partial limited radial deformation system, packing element inner surface deformation outward bulge as appearance, when load increase, packing element is crushed
And be compacted finally.But due to structure limitation, only upper packing element can be compacted.When operating pressure is 30MPa, upper packing element base
There is slight shoulder in this completely densified, packing element upper end, but packing element does not occur isolates phenomenon, and shoulder is within allowed band ".
The first phase in 2009《Oil field equipment》In《The improvement of high-pressure packer cartridge》In think " due to rubber
Glue top layer is easily torn, therefore considers to add layer of metal piece (such as copper sheet) on the top layer of rubber ".
But, above-mentioned prior art only analyzes the first axial compressive force of application (equivalent to " axial load ") to packing element deformation
Influence.But, it is necessary to apply top-down first axial compressive force first to packing element to make glue in actual production process
Cylinder produces preliminary sealing, and then apply can (material such as downhole gas be to packing element by the second axial compressive force from bottom to top for packing element
Impact).According to the experiment of inventor, when the first axial compressive force is 30MPa, inventor has found that almost all of packing element all can
There is shoulder, when further applying a second axial pressure (such as 15MPa or 20MPa), all packing elements can be at shoulder
Generation is isolated, and causes seal failure.
Further, inventor also found, the sealing that packing element can be of short duration when pressure is applied a second axial, but well
When the materials such as spirit body impact to packing element, the small molecule of the high temperature and high pressure steam being contained therein can be to the packing element of high polymer material
Degradation is produced, causes packing element to be followed the string first in bottom and sealing function can not be played, and then in the centre of packing element
Portion also produces degraded and followed the string, and influences the sealed long-term effect of packing element.
Utility model content
The purpose of the application is to provide a kind of new sealing structure, to prevent or reduce the generation of packing element shoulder.
According to the one side of the application there is provided a kind of packing element with disc spring, the packing element has positioned at the logical of center
It is hole, the inner surface positioned at the through hole, the outer surface corresponding with the inner surface, upper positioned at the packing element two ends respectively
End and bottom and the pars intermedia between the upper end and the bottom, the upper end are used to bear along axle
To first axial compressive force in direction, the bottom is used to bear opposite with first axial compressive force along the axial direction
The second axial compressive force, it is characterised in that
The disc spring serves as the upper end, and the disc spring includes：
Circular mounting hole positioned at middle part, the mounting hole is surround by a bearing ring and formed；
First is provided between the multiple outside fins being distributed on the bearing ring circumferential surface, each outside fin to pass through
Through hole, the outside fin tail end close to the mounting hole is connected on the bearing ring, the outside fin away from the mounting hole
Head end is mutually compressed with the pars intermedia, and the outside fin head end is caused towards the direction extension away from the mounting hole diagonally downward
The outside fin tail end is higher than the outside fin head end；
When the bearing ring bears axial compressive force, the outside fin head end is compressed by the pars intermedia and in radial direction side
Expand outwardly upwards, when the axial compressive force is increased to the first rated value, the outside fin head end is mutually compressed with sleeve pipe.
Preferably, the quantity of the disc spring is two, and two disc springs are laminated on the axial direction；
Wherein, the outside fin positioned at the disc spring of upper end covers described of the disc spring positioned at lower end
One through hole.
Preferably, the lower surface of the outside fin head end is horizontal plane.
Preferably, a part of upper surface of the bearing ring is horizontal plane.
Preferably, multiple second running through through the bearing ring on the axial direction are distributed with the bearing ring
Hole, second through hole is communicated with the mounting hole；
When the bearing ring bears the axial compressive force, the bearing ring is described in the radial direction towards close to the peace
The direction expansion in hole is filled, when the axial compressive force is increased to the second rated value, the bearing ring is mutually compressed with central tube.
Preferably, second through hole towards away from the mounting hole direction extend, intersect with the outside fin and
Through a part of outside fin.
Preferably, second through hole extends towards the direction away from the mounting hole, and with the outside fin not phase
Hand over；
The quantity of the disc spring is two, and two disc springs are laminated on the axial direction；
When laminating, the institute of the disc spring positioned at lower end is covered positioned at the outside fin of the disc spring of upper end
State the first through hole, positioned at upper end the disc spring second through hole by the pressure-bearing of the disc spring positioned at lower end
Circle is blocked.
Preferably, first through hole and second through hole be respectively positioned on it is described in the radial direction.
According to further aspect of the application there is provided a kind of packer, the packer has one of above-mentioned technical proposal institute
The packing element of restriction.
According to another aspect of the application there is provided a kind of bridging plug, there is the bridging plug one of above-mentioned technical proposal to be limited
Packing element.
The technical scheme that the application is provided at least has the following technical effect that：
1st, in one embodiment, when bearing ring bears axial compressive force, outside fin head end by pars intermedia compress and
Expand outwardly in the radial direction, when axial compressive force is increased to the first rated value, outside fin head end is mutually compressed with sleeve pipe.Now
Pars intermedia is pressed against by outside fin, it is only necessary to which the hardness of adjustment outside fin can effectively prevent the generation of shoulder.
2nd, in one embodiment, the outside fin positioned at the disc spring of upper end covers first of the disc spring positioned at lower end and passed through
Through hole.So, the outside fin of the disc spring of upper end limits pars intermedia and raised up from the first through hole of the disc spring of lower end
Length, the bulge rupture can be prevented.
Brief description of the drawings
Some specific embodiments of the application are described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference denotes same or similar part or part in accompanying drawing.In accompanying drawing：
Fig. 1 is the compression packer comprising packing element and central tube and the position relationship of sleeve pipe of the application one embodiment
Schematic diagram；
Fig. 2 is the structural representation of a packing element in the prior art；
Fig. 3 is the position relationship schematic diagram of the packing element and central tube and sleeve pipe of prior art, wherein illustrate only a part
Packing element, central tube and sleeve pipe；
Fig. 4 shows that the packing element shown in Fig. 3 is applied in the shoulder knot produced after the first axial compressive force or the second axial compressive force
Structure schematic diagram；
Fig. 5 is the structural representation of the disc spring of the application one embodiment；
Fig. 6 is the structural representation of the disc spring of the application another embodiment；
Fig. 7 is the structural representation of the disc spring of the application further embodiment.
Reference in figure is as follows：
10- packing elements, 101- outer surfaces, 102- inner surfaces, 103- through holes, 104- upper ends, 105- pars intermedias, 106- lower ends
Portion, 107- shoulders；
On the outside of fin tail end on the outside of fin on the outside of 20- disc springs, 201- mounting holes, 202- bearing rings, 203-, 204-, 205-
Fin head end, the through holes of 206- first, the through holes of 207- second；
30- central tubes；
40- sleeve pipes；
50- rigidity spacer rings；
200- compression packers；
300- thermal production well mouths；
The axial directions of A- first；
The axial directions of B- second；
F1- the first axial compressive force；
F2- the second axial compressive force.
Embodiment
Direction described below " on ", " under " it is to be used as using Fig. 2 with reference to narration.
Compression packer 200 as shown in Figure 1 has the packing element 10 of the application.During compression packer 200 is connected to
It is placed on heart pipe 30 in sleeve pipe 40.Compression packer 200 needs that different oil reservoirs, water layer are separated and held in the wellbore
By certain pressure difference, it is desirable to can descend pit shaft precalculated position, packing is tight, can have durability in underground again, it is necessary to when can be smooth
Rise.
As shown in Fig. 2 the generally tubular of packing element 10, packing element 10 has the through hole 103 positioned at center, the through hole 103 is by interior
Surface 102 limits and formed, and outer surface 101 is located at the outside of the through hole 103 corresponding with inner surface 102.When the first axial direction
Pressure F1The axial compressive force F of upper end 104 or second is acted on along the first axial direction A2Lower end is acted on along the second axial direction B
During portion 106, the entirety of packing element 10 will be axially compressed and be radially expanded (has identical with " in deforming upon for radial direction "
Implication), promote the outwardly convex of outer surface 101 and inner surface 102 be inwardly protruding.
As shown in figure 3, packing element 10 is located in the annular space that sleeve pipe 40 and central tube 30 are constituted, rigid spacer ring 50 is in axial direction
The first axial compressive force F of (i.e. the first axial direction A) from top to bottom is provided on direction1, can also remove in other embodiments
Rigid spacer ring 50 and by the first axial compressive force F can be applied to packing element 101Other parts replace.Upper end 104 is used for direct
Bear the first axial compressive force F in axial direction1, bottom 106 be used for directly bear in axial direction with first axially press
Power F1The second opposite axial compressive force F2.As a part for packing element 10, upper end 104, bottom 106 and pars intermedia 105 all should
This is flexible.As a kind of explanation to elasticity and the restriction of elastic size, as the first axial compressive force F1Put on upper end
When 104, upper end 104, pars intermedia 105 and bottom 106 are deformed upon in radial direction；As the second axial compressive force F2Apply
When bottom 106, upper end 104, pars intermedia 105 and bottom 106 are deformed upon in radial direction.Applying first axle
To pressure F1Afterwards or applying a second axial pressure F2Afterwards, inner surface 102 is sealed with central tube 30, outer surface 101 and sleeve pipe 40
Sealing.Usually, the space between inner surface 102 and central tube 30 is smaller (almost bonded to each other), and outer surface 101 and sleeve pipe
Gap between 40 is larger, and central tube 30 and sleeve pipe 40 are respectively by inner surface 102 and the maximum raised size of outer surface 101
It is defined, so causing the degree of the outwardly convex of outer surface 101 to be more than the inwardly protruded degree of inner surface 102.
As shown in figure 4, when upper end 104 is by the first axial compressive force F1When, upper end 104 can produce shoulder 107, when again
Apply a second axial pressure F2When, upper end 104 is understood isolates at shoulder 107 in figure 3.Or, although upper end 104
By the first axial compressive force F1When do not produce shoulder 107, but pressure F ought be applied a second axial again2When produce shoulder 107, by material
Expect the effect that extensibility and rigid spacer ring 50 are sheared, shoulder 107 is very easy to isolate.
Below the structure design of shoulder 107 is reduced or prevents to describe the application.
The application serves as the upper end 104 shown in Fig. 2 and Fig. 3 using disc spring 20.
In one embodiment, disc spring 20 includes：
Circular mounting hole 201 positioned at middle part, mounting hole 201 is surround by bearing ring 202 and formed.Mounting hole 201 is used for
It is set on central tube 30.
First is provided between the multiple outside fins 203 being distributed on the circumferential surface of bearing ring 202, each outside fin 203
Through hole 206.Each outside fin 203 is spaced apart by the first through hole 206.Outside fin 203 include tail end, head end and
Center section between them.Outside fin tail end 204 close to mounting hole 201 is connected on bearing ring 202, away from mounting hole
201 outside fin head end 205 is mutually compressed with pars intermedia 105, and outside fin head end 205 is diagonally downward towards away from mounting hole 201
Direction extension and cause outside fin tail end 204 to be higher than outside fin head end 205.
When bearing ring 202 bears axial compressive force, outside fin head end 205 is compressed by pars intermedia 105 and in radial direction
On expand outwardly, when axial compressive force is increased to the first rated value, outside fin head end 205 is mutually compressed with sleeve pipe 40.It is now outer
Pars intermedia 105 is pressed against by side fin 203, it is only necessary to which the hardness of adjustment outside fin 203 can effectively prevent shoulder 107
Produce.Also, after axial compressive force disappearance, disc spring 20 is overall to upspring upward in the axial direction, and outside fin head end 205 is radially
To contract on direction, be conducive to going out the packing element 10 shown in Fig. 3 from sleeve pipe 40.In one embodiment, disc spring 20 is
Metal material increases intensity, and silver or red copper can also be coated with outside fin head end 205 to increase the patch with sleeve pipe 40
It is right.
As shown in figure 5, due to having the first through hole 206 between outside fin 203, in order to prevent applying axial compressive force
When pars intermedia 105 from the bulge rupture of the first through hole 206, two disc springs 20, the two disc springs 20 are set in one embodiment
Mutually laminate in the axial direction.Of the disc spring 20 positioned at lower end is covered positioned at the outside fin 203 of the disc spring 20 of upper end
One through hole 206.So, the outside fin 203 of the disc spring 20 of upper end limits pars intermedia 105 from the disc spring 20 of lower end
The length that one through hole 206 raises up, can prevent the bulge rupture.
Upper surface in view of pars intermedia 105 is horizontal plane, in one embodiment, the following table of outside fin head end 205
Face is horizontal plane.It can so prevent outside fin head end 205 from piercing through pars intermedia 105.Or in the outside fin head shown in Fig. 5
The outer that setting extends in the horizontal direction at 205 is held, is compressed with outer with pars intermedia 105, also can be when applying axial compressive force
Pars intermedia 105 is prevented to be pierced.
Referring to Fig. 3 and Fig. 4, it is contemplated that the lower surface for being used generally the level of rigid spacer ring 50 presses to bearing ring 202,
In one embodiment, a part of upper surface of bearing ring 202 is horizontal plane, and this can increase the pressure area of rigid spacer ring 50
Prevent disc spring 20 by pressure break.
In the embodiment shown in fig. 6, it is distributed with bearing ring 202 multiple in the axial direction through the of bearing ring 202
Two through holes 207, the second through hole 207 is communicated with mounting hole 201, and this makes bearing ring 202 be formed as and multiple outside fins 203
Corresponding multiple inner side fins.
When bearing ring 202 bears axial compressive force, bearing ring 202 in other words towards close pacify in radial directions by inner side fin
The direction expansion in hole 201 is filled, when axial compressive force is increased to the second rated value, bearing ring 202 is mutually compressed with central tube 30.The knot
Structure can prevent pars intermedia 105 from producing upward projection at central tube 30.Also, after axial compressive force disappearance, disc spring 20
Overall to upspring upward in the axial direction, inner side fin is outside in radial directions (away from mounting hole 201 in other words for bearing ring 202
Direction) shrink, be conducive to the separation by the packing element 10 shown in Fig. 3 and central tube 30.
By adjusting the size of the second through hole 207, can adjust under specified axial compressive force bearing ring 202 moves down journey
Degree, so as to adjust the gap of bearing ring 202 and central tube 30.In one embodiment, the second through hole 207 is towards away from mounting hole
201 direction extension, the second through hole 207 intersects with outside fin 203 and through part outside fin 203, now in volume
Determine that bearing ring 202 under axial compressive force is mutually compressed with central tube 30, outside fin head end 205 is mutually compressed with sleeve pipe 40.
As shown in fig. 6, the first through hole 206 and the second through hole 207 are respectively positioned in the radial direction, and spaced row
Row.Because the first through hole 206 and the second through hole 207 are longer, when the disc spring 20 shown in two Fig. 6 is superimposed, in upper dish
Second through hole 207 of spring 20 coincides with the first through hole 206 of the disc spring 20 under unavoidably, it is impossible to limit pars intermedia 105
The length raised up from the first through hole 206, the second through hole 207.So in embodiment as shown in Figure 7, second runs through
Hole 207 extends towards the direction away from mounting hole 201, and non-intersect with outside fin 203.When two disc springs 20 as shown in Figure 7
When laminating in the axial direction, it is possible to reach following state by rotating the disc spring 20 of upper end：When laminating, positioned at upper end
The outside fin 203 of disc spring 20 cover the first through hole 206 of the disc spring 20 positioned at lower end, the disc spring 20 positioned at upper end
Second through hole is blocked by the bearing ring 202 of the disc spring 20 positioned at lower end, limit pars intermedia 105 from the first through hole 206,
The length that second through hole 207 raises up.
The application also provides a kind of packer, and the packer has the packing element 10 that one of above-mentioned technical proposal is limited.
The application also provides a kind of bridging plug, and the bridging plug has the packing element 10 that one of above-mentioned technical proposal is limited.
So far, although those skilled in the art will appreciate that detailed herein have shown and described the multiple of the application and show
Example property embodiment, still, still can be direct according to present disclosure in the case where not departing from the application spirit and scope
It is determined that or deriving many other variations or modifications for meeting the application principle.Therefore, scope of the present application is understood that and recognized
It is set to and covers other all these variations or modifications.
Claims (10)
1. a kind of packing element (10) with disc spring, the packing element (10), which has, is located at the through hole (103) at center, positioned at the through hole
(103) inner surface (102) at place, the outer surface (101) corresponding with the inner surface (102), respectively be located at the packing element
(10) upper end (104) and bottom (106) at two ends and positioned at the upper end (104) and the bottom (106) it
Between pars intermedia (105), the upper end (104) is used to bear the first axial compressive force in axial direction, the bottom
(106) it is used to bear second axial compressive force opposite with first axial compressive force along the axial direction, it is characterised in that
The disc spring (20) serves as the upper end (104), and the disc spring (20) includes：
Circular mounting hole (201) positioned at middle part, the mounting hole (201) is surround by a bearing ring (202) and formed；
Between the multiple outside fins (203) being distributed on the bearing ring (202) circumferential surface, each outside fin (203)
The first through hole (206) is provided with, the outside fin tail end (204) close to the mounting hole (201) is connected to the bearing ring
(202) on, the outside fin head end (205) away from the mounting hole (201) is mutually compressed with the pars intermedia (105), described outer
Side fin head end (205) causes the outside fin tail end towards the direction extension away from the mounting hole (201) diagonally downward
(204) it is higher than the outside fin head end (205)；
When the bearing ring (202) bears axial compressive force, the outside fin head end (205) is supported by the pars intermedia (105)
Press and expand outwardly in radial directions, when the axial compressive force is increased to the first rated value, the outside fin head end
(205) mutually compressed with sleeve pipe (40).
2. packing element (10) according to claim 1, it is characterised in that
The quantity of the disc spring (20) is two, and two disc springs (20) laminate on the axial direction；
Wherein, the outside fin (203) positioned at the disc spring (20) of upper end covers the disc spring positioned at lower end
(20) first through hole (206).
3. packing element (10) according to claim 1, it is characterised in that
The lower surface of the outside fin head end (205) is horizontal plane.
4. packing element (10) according to claim 1, it is characterised in that
A part of upper surface of the bearing ring (202) is horizontal plane.
5. packing element (10) according to claim 1, it is characterised in that
Multiple second running through through the bearing ring (202) on the axial direction are distributed with the bearing ring (202)
Hole (207), second through hole (207) communicates with the mounting hole (201)；
When the bearing ring (202) bears the axial compressive force, the bearing ring (202) is described in the radial direction towards close
The mounting hole (201) direction expansion, when the axial compressive force is increased to the second rated value, the bearing ring (202) with
Central tube (30) is mutually compressed.
6. packing element (10) according to claim 5, it is characterised in that
Second through hole (207) extends towards the direction away from the mounting hole (201), with outside fin (203) phase
Hand over and through a part of outside fin (203).
7. packing element (10) according to claim 5, it is characterised in that
Second through hole (207) towards away from the mounting hole (201) direction extend, and with the outside fin (203)
It is non-intersect；
The quantity of the disc spring (20) is two, and two disc springs (20) laminate on the axial direction；
When laminating, the dish positioned at lower end is covered positioned at the outside fin (203) of the disc spring (20) of upper end
First through hole (206) of spring (20), positioned at upper end the disc spring (20) second through hole (207) by positioned at
The bearing ring (202) of the disc spring (20) of lower end is blocked.
8. packing element (10) according to claim 5, it is characterised in that
First through hole (206) and second through hole (207) be respectively positioned on it is described in the radial direction.
9. a kind of packer, it is characterised in that including the packing element (10) described in one of claim 1-8.
10. a kind of bridging plug, it is characterised in that including the packing element (10) described in one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621453840.4U CN206439023U (en) | 2016-12-28 | 2016-12-28 | Packing element, packer and bridging plug with disc spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621453840.4U CN206439023U (en) | 2016-12-28 | 2016-12-28 | Packing element, packer and bridging plug with disc spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206439023U true CN206439023U (en) | 2017-08-25 |
Family
ID=59643716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621453840.4U Active CN206439023U (en) | 2016-12-28 | 2016-12-28 | Packing element, packer and bridging plug with disc spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206439023U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522873A (en) * | 2016-12-28 | 2017-03-22 | 隆学武 | Rubber sleeve with disk spring, packer and bridge plug |
| CN114412408A (en) * | 2022-01-06 | 2022-04-29 | 中国地质科学院探矿工艺研究所 | Water burst blocking device in drilling hole for horizontal rope coring |
-
2016
- 2016-12-28 CN CN201621453840.4U patent/CN206439023U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522873A (en) * | 2016-12-28 | 2017-03-22 | 隆学武 | Rubber sleeve with disk spring, packer and bridge plug |
| CN114412408A (en) * | 2022-01-06 | 2022-04-29 | 中国地质科学院探矿工艺研究所 | Water burst blocking device in drilling hole for horizontal rope coring |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181030 Address after: 100035 C 2003, Cheng Ming House, 2 Xizhimen inner street, Xicheng District, Beijing. Patentee after: Tianding LIAN sealing technology (Beijing) Co. Ltd. Address before: 100035 C 2003, Cheng Ming House, 2 Xizhimen inner street, Xicheng District, Beijing. Co-patentee before: Song Wei Patentee before: Long Xuewu |