CN108571298A - Packing device - Google Patents
Packing device Download PDFInfo
- Publication number
- CN108571298A CN108571298A CN201710145283.2A CN201710145283A CN108571298A CN 108571298 A CN108571298 A CN 108571298A CN 201710145283 A CN201710145283 A CN 201710145283A CN 108571298 A CN108571298 A CN 108571298A
- Authority
- CN
- China
- Prior art keywords
- enclosing element
- interior
- piston
- packing
- packing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012856 packing Methods 0.000 title claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 48
- 230000002265 prevention Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000012946 outsourcing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
Abstract
The present invention relates to a kind of packing devices comprising packing element and the promotion packing element are so that multiple piston mechanisms that the packing element radial outward expansion deforms.Larger power can be generated to packing element by multiple piston mechanisms, and is which thereby enhanced packing element and expanded the success rate set.
Description
Technical field
The present invention relates to oil field well technical field of tools, more particularly to a kind of packing device.
Background technology
Packing is the significant process in completion practice in well, is commonly used for the shape between tubing string and outer layer sleeve or the borehole wall
At barrier, so that the upstream annular space and downstream annular space at this separate.
However, packing device in the prior art usually has that setting force is inadequate, and thus it is difficult to successfully realize
It sets.Such case is especially common for shallow well, small-scale well, high angle hole and staged fracturing.It can not normally set
Very detrimental effect can be generated to subsequent job, and job scheduling can be seriously affected, reduce operating efficiency.
The high packing device of success rate is set therefore, it is necessary to a kind of.
Invention content
In view of the above-mentioned problems, the present invention proposes and a kind of setting the high packing device of success rate.
According to the invention it is proposed that a kind of packing device comprising packing element and the promotion packing element are so that the packing element
Multiple piston mechanisms of radial outward expansion deformation.
In this packing device, larger power can be generated to packing element by multiple piston mechanisms, and which thereby enhance
Packing element expands the success rate set.
In one embodiment, multiple piston mechanisms are concurrently arranged.
In one embodiment, multiple piston mechanisms are disposed in series.
In one embodiment, multiple piston mechanisms are arranged in order and connect in the axial direction.
In one embodiment, the piston mechanism includes interior enclosing element and is set in the outside of the interior enclosing element and energy
Relative to the outer enclosing element that the interior enclosing element moves in the axial direction, be provided between the interior enclosing element and outer enclosing element with
The fixed fixed separator of interior enclosing element, the shape between the interior enclosing element and outer enclosing element of the side of the fixed separator
At first piston chamber, second piston chamber is formed between the interior enclosing element and outer enclosing element of the other side of the fixed separator,
Wherein, when the pressure of the first piston intracavitary is less than the pressure of the second piston intracavitary, the outer enclosing element is towards the
Direction where two plunger shafts is axially moveable to push the packing element.
In one embodiment, it is configured in the outer enclosing element for by the outer space of the outer enclosing element and institute
State the first through hole of first piston chamber connection.
In one embodiment, it is configured in the interior enclosing element for by the inner space of the interior enclosing element and institute
State the second through-hole of second piston chamber connection.
In one embodiment, the outer enclosing element is connect with the interior enclosing element by shear pin, wherein when promoting
When the outer enclosing element reaches first pressure relative to the power that the interior enclosing element is axially moveable, the shear pin is cut.
In one embodiment, the packing device further include be arranged between the piston mechanism and the packing element it is anti-
Move back mechanism.
In one embodiment, the retreating prevention mechanism includes relative to the outer receiving member in the axial direction fixed
One anti-back pieces and the second anti-back pieces with the described first anti-back pieces cooperation being arranged in the interior enclosing element, described first is anti-
It is configured on one in back pieces and the second anti-back pieces towards another in the described first anti-back pieces and the second anti-back pieces
One ratchet, another in the first anti-back pieces and the second anti-back pieces are configured with matched with the ratchet
Slot.
Compared with the prior art, the advantages of the present invention are as follows：Packing element can be generated by multiple piston mechanisms larger
Power, and which thereby enhance packing element and expand the success rate set.
Description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 is the structural schematic diagram of one embodiment of packing device according to the present invention；
Fig. 2 is the structural schematic diagram of one embodiment of the piston mechanism in packing device according to the present invention.
In the accompanying drawings, identical component uses identical reference numeral.Attached drawing is not according to actual ratio.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 schematically shows one embodiment of packing device 1 according to the present invention.As shown in Figure 1, packing device
1 include packing element 30 and multiple piston mechanisms, these piston mechanisms can push packing element 30 so that its radial outward expansion deformation from
And it realizes and sets.Show two piston mechanisms 10A, 10B, it should be appreciated that more pistons can also be set in Fig. 1
Mechanism.The thrust (that is, setting force) of bigger can be provided to packing element 30 by the way that multiple piston mechanisms are arranged, to promote it to set.
In one embodiment, multiple piston mechanisms can be mutually parallel.Phase is not present between parallel piston mechanism
The relationship of interaction.For example, multiple piston mechanisms can mutually be arranged and all act directly on packing element 30.
In another embodiment, multiple piston mechanisms are serially connected.Exist between concatenated piston mechanism and pushes
Relationship.Piston mechanism 10A and piston mechanism 10B series connection, piston mechanism 10B can be pushed directly in the embodiment shown in fig. 1
Packing element 30, and piston mechanism 10A is then to push directly on piston mechanism 10B and push packing element 30 indirectly.Preferably, as shown in Figure 1,
Concatenated piston mechanism 10A, 10B are arranged in order in the axial direction.The packing device 1 of this set closes the most in space utilization
Reason.
Fig. 2 shows one embodiment of single piston mechanism 10A.The structure of piston mechanism 10B can be with piston mechanism 10A
It is identical, can also be any other appropriate configuration that can realize its effect.Below with reference to Fig. 2 to the structure of piston mechanism 10A
It is described in detail.
As shown in Fig. 2, piston mechanism 10A includes interior enclosing element 11 and outer enclosing element 12.For example, interior enclosing element 11 and outsourcing
Enclose the form that part 12 may be configured to tubing string.Outer enclosing element 12 is spaced apart with interior enclosing element 11, and its upstream end and downstream
End can extend radially inwardly with the 11 slideable engagement of interior enclosing element.Thus one, in interior enclosing element 11 and outer enclosing element 12
Between can form cavity as shown in Figure 1.The cavity is arranged on the fixed separation between interior enclosing element 11 and outer enclosing element 12
Part 13 separates, and is respectively formed first piston chamber 14 and second piston chamber 15.Fixed separator 13 is fixed with interior enclosing element 11, example
Such as can on it, downstream both sides be arranged clamp spring, itself and 11 phase of interior enclosing element are fixed.In this case, work as first piston
When pressure in chamber 14 is less than the pressure in second piston chamber 15, outer enclosing element 12 will by towards second piston chamber 15 (in Fig. 1
Be direction towards right in Fig. 2) push, so as to be moved towards packing element 30 and push packing element 30.
First through hole 16 can be opened up in outer enclosing element 12.The first through hole 16 is by first piston chamber 14 and outer enclosing element 12
Outer space connection.Annular space of the outer space between outer enclosing element 12 and the inner wall or the borehole wall of outer layer sleeve the case where
Under, the pressure in first piston chamber 14 is identical as the pressure in annular space.It should be understood that can also be incited somebody to action by the first through hole 16
First piston chamber 14 is connected to other pressure regulating mechanisms appropriate.
In addition, can also open up the second through-hole 17 in interior enclosing element 11.Second through-hole 17 by second piston chamber 15 with it is interior
The inner space of enclosing element 11 is connected to, and the pressure in second piston chamber 15 is identical as the pressure in the inner space as a result,.It uses
Person can be by the pressure that controls the pressure in the inner space to change in second piston chamber 15.
Outer enclosing element 12 can be connect by shear pin 21 with interior enclosing element 11.When the pressure in second piston chamber 15 reaches
When to a certain degree (for example, when the difference of the pressure in it is with first piston chamber 14 is sufficiently large), which cuts.This
When, it can start to set.
In the embodiment shown in fig. 1, outer to surround for piston mechanism 10A, 10B for being sequentially connected in series setting
Part is threadably secured connection.In this case, outer enclosing element and the interior enclosing element for only existing in the piston mechanism 10A of upstream are logical
Cross the connection of shear pin 21.Moreover it is preferred that the part of the outer enclosing element and interior enclosing element engaged with shear pin 21 is kept away
Over enclosing element and interior enclosing element sealing first piston chamber 14 and second piston chamber 15 part, to avoid sealing function by not
Good influence.Preferably, outer enclosing element is configured with the extension upstream extended relative to first piston chamber 14 with interior enclosing element,
It is attached by shear pin 21 at the part.
In addition, as shown in Figure 1, packing device 1 further includes retreating prevention mechanism.
In one embodiment, retreating prevention mechanism includes the slips 24 extended from outer enclosing element towards packing element, and setting exists
Guide sleeve 23 between outer enclosing element and packing element, the outer diameter of guide sleeve 23 along from outer enclosing element to the direction packing element by
It is cumulative big.The inner surface of slips 26 and the outer surface of guide sleeve 23 are slidably matched.In the mistake that outer enclosing element is moved towards packing element
Cheng Zhong, slips 26 are also moved towards packing element.Simultaneously as the cooperation of slips 26 and guide sleeve 23, slips 26 is also radially outward
Expansion with the inner wall of outer layer sleeve or the borehole wall until engage.Being provided on slips 26 can engage with the inner wall of outer layer sleeve or the borehole wall
Ratchet, so as to play the role of for packing device 1 position.
Preferably, slips 24 (or outer enclosing element) is connect with guide sleeve 23 by shear pin 22.At the beginning, in outsourcing
When enclosing part movement, slips 24 and guide sleeve 23 also move together.Slips 26 will not be with the inner wall or the borehole wall of outer layer sleeve at this time
Engagement.When shear pin 22 is cut due to by sufficiently large power, relatively moved between guide sleeve 23 and slips 24,
Enable slips 24 that can extremely be engaged with the inner wall of outer layer sleeve or the borehole wall with radial outward dilations.
In another embodiment, retreating prevention mechanism includes relative to fixed first anti-back in the axial direction of outer receiving member
Part and the second anti-back pieces with the first anti-back pieces cooperation being arranged in interior enclosing element.Here it should be understood that first is anti-
Back pieces can be set up directly in the groove on the inside of outer enclosing element, or also can be as shown in Figure 1, the setting of the first anti-back pieces 26
In the groove of other 25 insides of sleeve moved together with outer enclosing element.Correspondingly, in the second anti-back pieces can be set up directly on
In enclosing element, may also be arranged on in the mutually fixed other structures of interior enclosing element.
For example, the first anti-back pieces can be directed towards the ratchet of the second anti-back pieces, and the second anti-back pieces are to match with the ratchet
The slot of conjunction.As needed, the second anti-back pieces are ratchet and the first anti-back pieces are that slot is also possible.
As shown in Figure 1, also anti-bulge loop 31 can be respectively set in the upstream end of packing element 30 and downstream end, to prevent packing element 30
Leading Edge Deformation, and ensure that packing element 30 can smoothly and normally forced expansion.
Herein, " upstream " refers to the direction close to well head, and relatively, " downstream " refers to the side close to shaft bottom
To.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited in texts
Disclosed in specific embodiment, but include all technical solutions fallen within the scope of the appended claims.
Claims (10)
1. a kind of packing device comprising packing element and push the packing element so that the packing element radial outward expansion deformation it is more
A piston mechanism.
2. packing device according to claim 1, which is characterized in that multiple piston mechanisms are concurrently arranged.
3. packing device according to claim 1, which is characterized in that multiple piston mechanisms are disposed in series.
4. packing device according to claim 3, which is characterized in that multiple piston mechanisms are in the axial direction successively
It arranges and connects.
5. the packing device according to any one of Claim 1-3, which is characterized in that the piston mechanism includes interior packet
The outer enclosing element for enclosing part and being set in the outside of the interior enclosing element and capable of in the axial direction being moved relative to the interior enclosing element,
Be provided between the interior enclosing element and outer enclosing element with the interior fixed fixed separator of enclosing element, fixed separate described
First piston chamber, the interior packet in the other side of the fixed separator are formed between the interior enclosing element and outer enclosing element of the side of part
Formation second piston chamber between part and outer enclosing element is enclosed,
Wherein, when the pressure of the first piston intracavitary is less than the pressure of the second piston intracavitary, the outer enclosing element court
It is axially moveable to the direction where second piston chamber to push the packing element.
6. packing device according to claim 5, which is characterized in that be configured in the outer enclosing element for will be described
The first through hole that the outer space of outer enclosing element is connected to the first piston chamber.
7. packing device according to claim 5 or 6, which is characterized in that be configured in the interior enclosing element for inciting somebody to action
The second through-hole that the inner space of the interior enclosing element is connected to the second piston chamber.
8. the packing device according to any one of claim 5 to 7, which is characterized in that the outer enclosing element with it is described interior
Enclosing element is connected by shear pin,
Wherein, when the power for promoting the outer enclosing element to be axially moveable relative to the interior enclosing element reaches first pressure, institute
State shear pin cutting.
9. the packing device according to any one of claim 1 to 8, which is characterized in that the packing device further includes setting
Set the retreating prevention mechanism between the piston mechanism and the packing element.
10. packing device according to claim 8, which is characterized in that the retreating prevention mechanism includes relative to the outer appearance
Receive part the fixed first anti-back pieces and what is be arranged in the interior enclosing element match with the described first anti-back pieces in the axial direction
The the second anti-back pieces closed,
It is configured on one in the first anti-back pieces and the second anti-back pieces towards the described first anti-back pieces and described
Another ratchet in two anti-back pieces, another in the first anti-back pieces and the second anti-back pieces be configured with it is described
The matched slot of ratchet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145283.2A CN108571298A (en) | 2017-03-13 | 2017-03-13 | Packing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145283.2A CN108571298A (en) | 2017-03-13 | 2017-03-13 | Packing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108571298A true CN108571298A (en) | 2018-09-25 |
Family
ID=63578206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710145283.2A Pending CN108571298A (en) | 2017-03-13 | 2017-03-13 | Packing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108571298A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030192687A1 (en) * | 2001-07-27 | 2003-10-16 | Baker Hughes Incorporated | Downhole actuation system utilizing electroactive fluids |
| CN2616669Y (en) * | 2003-05-10 | 2004-05-19 | 尹婷 | Double-sealing flushing packer |
| CN103982157A (en) * | 2013-02-07 | 2014-08-13 | 韦特福特/兰姆有限公司 | Hydraulic setting packer with piston communicated with annulus |
| CN205638342U (en) * | 2016-05-18 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | Multistage hydraulic compresses packer |
| WO2016190885A1 (en) * | 2015-05-28 | 2016-12-01 | Halliburton Energy Services, Inc. | Viscous damping systems for hydrostatically set downhole tools |
-
2017
- 2017-03-13 CN CN201710145283.2A patent/CN108571298A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030192687A1 (en) * | 2001-07-27 | 2003-10-16 | Baker Hughes Incorporated | Downhole actuation system utilizing electroactive fluids |
| CN2616669Y (en) * | 2003-05-10 | 2004-05-19 | 尹婷 | Double-sealing flushing packer |
| CN103982157A (en) * | 2013-02-07 | 2014-08-13 | 韦特福特/兰姆有限公司 | Hydraulic setting packer with piston communicated with annulus |
| WO2016190885A1 (en) * | 2015-05-28 | 2016-12-01 | Halliburton Energy Services, Inc. | Viscous damping systems for hydrostatically set downhole tools |
| CN205638342U (en) * | 2016-05-18 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | Multistage hydraulic compresses packer |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180925 |