CN106014328B - From swollen plugging device - Google Patents
From swollen plugging device Download PDFInfo
- Publication number
- CN106014328B CN106014328B CN201610569602.8A CN201610569602A CN106014328B CN 106014328 B CN106014328 B CN 106014328B CN 201610569602 A CN201610569602 A CN 201610569602A CN 106014328 B CN106014328 B CN 106014328B
- Authority
- CN
- China
- Prior art keywords
- packing element
- installation set
- convex platform
- annular convex
- fixed
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/122—Multiple string packers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
Abstract
The invention belongs to oil field well field of tool,More particularly to it is a kind of from swollen plugging device,Including central tube,Packing element installation set and packing element,The upper and lower ends of the central tube are provided with tubing round thread,The upper and lower ends of the packing element installation set are welded on the outside of central tube,The packing element includes fixed packing element and movable packing element,The two is made of expanded rubber,Epimere of the fixed packing element vulcanization in packing element installation set,The movable packing element is sleeved on the downside of fixed packing element,Packing element baffle ring is provided on the downside of movable packing element,Packing element baffle ring is fixed on the outside of packing element installation set by release pin,The lower end of packing element installation set is provided with retaining ring,Release glissile segment is provided between packing element baffle ring and retaining ring,One group of annular convex platform is machined on the outside of the epimere of the packing element installation set,The fixation packing element is attached on the packing element installation set section on annular convex platform and between annular convex platform.
Description
Technical field
The invention belongs to oil field well field of tool more particularly to a kind of from swollen plugging device.
Background technology
With deepening continuously for oil field development, Casing Failure is by soil corrosion, casing is of poor quality, torque wrench moment not enough etc.
Factor causes casing in oil gas water leakage during normal production.For outer blind hole below casing head, the technique taken at present is to take
Set or temporary closure are changed, due to being limited by overhaul construction team deficiency and well site condition, outer blind hole is administered with temporary envelope
Plugging column is in the majority, and temporary plugging tubing string is divided into two kinds of closing well tubing string and flow string, and the flow string of temporary closure can not
Well-flushing causes the serious well pump detection period of wax deposition short, and well-flushing is washed obstructed when lift pipe string operation, and difficulty is brought to follow-up management.Cause
This, the design simple expanded rubber plugging device of washing well is particularly important.
Invention content
Present invention offer is a kind of from swollen plugging device, to solve the problems mentioned in the above background technology.
Technical problem solved by the invention is realized using following technical scheme：The present invention provides a kind of from swollen closure
The upper and lower ends of device, including central tube, packing element installation set and packing element, the central tube are provided with tubing round thread, the glue
The upper and lower ends of cylinder installation set are welded on the outside of central tube, and the packing element includes fixed packing element and movable packing element, and the two is equal
It is made of expanded rubber, fixed packing element vulcanizes the epimere in packing element installation set, and the movable packing element is sleeved on fixed packing element
Downside is provided with packing element baffle ring on the downside of movable packing element, and packing element baffle ring is fixed on the outside of packing element installation set by release pin,
The lower end of packing element installation set is provided with retaining ring, and release glissile segment, the packing element are provided between packing element baffle ring and retaining ring
One group of annular convex platform is machined on the outside of the epimere of installation set, the fixation packing element is attached on annular convex platform and convex annular
On packing element installation set section between platform.
Annular space between the central tube and packing element installation set is not completely by between central tube and packing element installation set
Weld seam block, the weld seam is at least divided into that size and shape is three sections identical, and each section of weld seam is uniform along the axle center of central tube
Distribution.Rubber ring is provided in the release glissile segment, the shore hardness of rubber ring is not more than 80.The annular convex platform
There are two types of height, and the height of one of which annular convex platform is not more than the one third of fixed packing element maximum gauge, another annular
The height of boss is not less than 2/3rds of fixed packing element maximum gauge.The length ratio of the fixation packing element and movable packing element is
2：1.
Beneficial effects of the present invention are：
1, the present invention uses two-layer pipe, vulcanizes expanded rubber in the packing element installation set of outer layer, packing element installation set is in
There are well-flushing passages, central tube to be connect with oil pipe column between heart pipe, down toward leakage depth, is realized after expanded rubber water-swellable
Closure to casing leak source realizes washing well function while being blocked to casing.2, under working condition, two parts
The equal water-swellable of packing element plays plugging action, ensures plugging effect.It is upper propose deblocking when, since sealing surface is bigger, packing element with set
Frictional force between pipe is very big, if all fixed packing elements of packing element, the pulling force that when upper lifting pipe post needs is larger, difficulty of construction
It is larger.Packing element is divided into fixed packing element and movable packing element two parts by the present invention, when above proposing deblocking, compared with fixed packing element, and activity
Packing element is easier to be torn destruction under the action of frictional force, and to reduce pulling force when upper lifting pipe post, it is difficult to reduce construction
Degree.3, the present invention is defined the length ratio of fixed packing element and movable packing element, if length than excessive, that is, fixes packing element mistake
Long, movable packing element is too short, and the reduction that movable packing element is played the role of unseals pulling force unobvious, it is difficult to it is difficult to significantly reduce construction
Degree；If length than too small, i.e., fixed packing element is too short, and movable packing element is long, and packing element setting force will reduce, it is difficult to which guarantee is set
Fastness.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the vertical view of Fig. 1.
In figure：1- retaining rings, 2- rubber rings, 3- packing element baffle rings, 4- activity packing elements, 5- fix packing element, 6- annular convex platform, 7-
Packing element installation set, 8- central tubes, 9- release pins, 10- tubing round thread, 11- weld seams.
Specific implementation mode
The present invention is described further below in conjunction with attached drawing：
Embodiment one：
The present embodiment includes central tube 8, packing element installation set 7 and packing element, and the upper and lower ends of the central tube 8 are provided with oil
Pipe screw thread 10.
The upper and lower ends of the packing element installation set 7 are welded on the outside of central tube 8, form two-layer pipe, outer layer
Vulcanize expanded rubber in packing element installation set 7, there are well-flushing passage, the central tubes 8 between packing element installation set 7 and central tube 8
Annular space between packing element installation set 7 is not blocked by the weld seam 11 between central tube 8 and packing element installation set 7 completely, so that
Well-flushing passage is unimpeded.When construction, central tube 8 is connect with oil pipe column, after casing leakage depth, expanded rubber water-swellable
Realize that the closure to casing leak source realizes washing well function while being blocked to casing.
The weld seam 11 is at least divided into that size and shape is three sections identical, and each section of weld seam 11 is equal along the axle center of central tube 8
Even distribution.Weld seam 11 is distributed using segmented so that the stress of the junction of central tube 8 and packing element connector sleeve 7 evenly, to
The stress concentration phenomenon for weakening weld, enhances bonding strength.In addition, between at least three sections of weld seams 11, can be formed at least
Three liquid pass holes, when some liquid pass hole is blocked by sundries, other two liquid pass hole still can ensure the smooth of well-flushing passage
It is logical.
The packing element includes fixed packing element 5 and movable packing element 4, and the two is made of expanded rubber, and fixed packing element 5 vulcanizes
In the epimere of packing element installation set 7, the movable packing element 4 is sleeved on the downside of fixed packing element 5.Under working condition, two parts glue
Cylinder (fixed packing element 5 and movable packing element 4) equal water-swellable, plays plugging action, ensures plugging effect.It is upper propose deblocking when, due to
Sealing surface is bigger, and the frictional force between packing element and casing is very big, if all fixed packing elements 5 of packing element, needs when upper lifting pipe post
The pulling force wanted is larger, and difficulty of construction is also larger.Packing element is divided into 4 two parts of fixed packing element 5 and movable packing element by the present invention, above puies forward solution
Feng Shi, compared with fixed packing element 5, movable packing element 4 is easier to be torn destruction under the action of frictional force, is above carried to reduce
Pulling force when tubing string, reduces difficulty of construction.
The downside of movable packing element 4 is provided with packing element baffle ring 3, and packing element baffle ring 3 is fixed on packing element installation set by release pin 9
7 outside.There are two the functions of packing element baffle ring 3, on the one hand, packing element baffle ring 3 can limit movable packing element 4, prevent its from
It falls off in packing element installation set 7；On the other hand, when above proposing oil pipe column deblocking, although movable packing element 4 has been destroyed, due to glue
Cylinder baffle ring 3 is when being stuck, and deblocking pulling force is still excessive when causing to be difficult to unseal, and packing element baffle ring 3 can be under the action of upper lifting power
It cuts release pin 9 to move down, realizes deblocking.It ensure that the deblocking property of the present invention.
The lower end of packing element installation set 7 is provided with retaining ring 1, effect be prevent solution be honored as a queen packing element baffle ring 3 fall into it is right in well
Underground construction causes harmful effect.
Release glissile segment is provided between packing element baffle ring 3 and retaining ring 1, release sliding end is that packing element baffle ring 3 provides understanding
Activity space when envelope.Rubber ring 2 can be set in the release glissile segment, and rubber ring 2 is filled up glissile segment is discharged, can be prevented
Stone and other items is stuck in the release for discharging in glissile segment and influencing packing element baffle ring 3, cannot be solved to further obviate the present invention
The hidden danger of envelope.The shore hardness of rubber ring 2 is not more than 80 so that and rubber ring 2 is sufficiently small to the support force of packing element baffle ring 3, to
The restriction effect that rubber ring 2 moves down packing element baffle ring 3 support force of packing element baffle ring 3 is avoided, avoids deblocking pulling force not
Necessity waste.
One group of annular convex platform 6, the fixation packing element 5 attachment are machined on the outside of the epimere of the packing element installation set 7
On 7 section of packing element installation set on annular convex platform 6 and between annular convex platform 6.The setting of annular convex platform 6, enhances fixation
Adhesive force of the packing element 5 in packing element installation set 7 prevents fixed packing element 5 in outer force effect to increase the intensity of vulcanization connection
Lower and packing element installation set 7 is detached from, and the present apparatus is avoided to damage.
There are two types of the height of the annular convex platform 6, and it is maximum thick that the height of annular convex platform 6 a kind of is not more than fixed packing element 5
The one third of degree makes the highest point of such annular convex platform 6 while playing the role of enhancing the adhesive force of fixed packing element 5
Fixing glue barrel thickness be unlikely to too small, to maintain the globality of fixed packing element 5；The height of another annular convex platform 6 is not
Less than 2/3rds of fixed 5 maximum gauge of packing element, (quantity is not more than two points of former to 6 negligible amounts of such annular convex platform
One of) and be uniformly arranged in an axial direction, since its height is higher, while playing the role of enhancing the adhesive force of fixed packing element 5,
The expansion direction of packing element can also be guided, so that packing element is radially expanded, increase pressure of the packing element after expansion to casing
Power, to further enhance plugging effect.
The length ratio of the fixation packing element 5 and movable packing element 4 is 2：1.To the length of fixed packing element 5 and movable packing element 4
Than being defined, if length than excessive, i.e., fixed packing element 5 is long, and movable packing element 4 is too short, the drop that movable packing element 4 is played
The effect unobvious of low deblocking pulling force, it is difficult to significantly reduce difficulty of construction；If length than too small, i.e., fixed packing element 5 is too short, living
Dynamic packing element 4 is long, and packing element setting force will reduce, it is difficult to ensure the fastness set.
The performance of expanded rubber in said program is：Tensile strength is 6.2MPa, elongation at break 755%, shore
Hardness is 63, and it is 350% to absorb expansion rate.Expanded rubber has suitable intensity, hardness, elongation at break and absorbs expansion
Rate can be taken into account and plugging effect and set intensity, and the present invention is made more to have practical value and economic value.
Claims (1)
1. a kind of from swollen plugging device, including central tube (8), packing element installation set (7) and packing element, it is characterised in that：The center
The upper and lower ends of pipe (8) are provided with tubing round thread (10), and the upper and lower ends of the packing element installation set (7) are welded on central tube
(8) outside, the packing element include fixed packing element (5) and movable packing element (4), and the two is made of expanded rubber, fixing glue
In the epimere of packing element installation set (7), the movable packing element (4) is sleeved on the downside of fixed packing element (5), movable for cylinder (5) vulcanization
Packing element baffle ring (3) is provided on the downside of packing element (4), packing element baffle ring (3) is fixed on packing element installation set (7) by release pin (9)
Outside, the lower end of packing element installation set (7) is provided with retaining ring (1), is provided with and releases between packing element baffle ring (3) and retaining ring (1)
Glissile segment is put, one group of annular convex platform (6), the fixation packing element are machined on the outside of the epimere of the packing element installation set (7)
(5) it is attached on packing element installation set (7) section on annular convex platform (6) and between annular convex platform (6)；
Annular space between the central tube (8) and packing element installation set (7) is not completely by central tube (8) and packing element installation set
(7) weld seam (11) between blocks, and it is three sections identical that the weld seam (11) is at least divided into size and shape, each section of weld seam (11)
It is uniformly distributed along the axle center of central tube (8)；
Rubber ring (2) is provided in the release glissile segment, the shore hardness of rubber ring (2) is not more than 80；
There are two types of the height of the annular convex platform (6), and the height of one of which annular convex platform (6) is not more than fixed packing element (5)
The one third of maximum gauge, the height of another annular convex platform (6) be not less than fixed packing element (5) maximum gauge three/
Two；
The fixation packing element (5) and the length ratio of movable packing element (4) are 2：1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610569602.8A CN106014328B (en) | 2016-07-19 | 2016-07-19 | From swollen plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610569602.8A CN106014328B (en) | 2016-07-19 | 2016-07-19 | From swollen plugging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106014328A CN106014328A (en) | 2016-10-12 |
| CN106014328B true CN106014328B (en) | 2018-10-09 |
Family
ID=57115806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610569602.8A Active CN106014328B (en) | 2016-07-19 | 2016-07-19 | From swollen plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106014328B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044269B (en) * | 2017-05-27 | 2023-04-07 | 大庆市晟威机械制造有限公司 | But reuse's high pressure resistant packer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201354617Y (en) * | 2009-03-04 | 2009-12-02 | 中国石油天然气股份有限公司 | Self-expanding packer |
| CN201460803U (en) * | 2009-08-07 | 2010-05-12 | 中国石油天然气股份有限公司 | Oil/water self-expanding packer |
| CN203175473U (en) * | 2013-03-26 | 2013-09-04 | 中国石油化工股份有限公司 | Pump passing type water-plugging packer |
| CN204532229U (en) * | 2015-01-20 | 2015-08-05 | 中国石油天然气股份有限公司 | Meet water self-expanding external packer of pipe |
| CN105065665A (en) * | 2015-07-28 | 2015-11-18 | 苏州市相城区明达复合材料厂 | Novel anti-corrosion rubber sealing gasket |
| CN205743823U (en) * | 2016-07-19 | 2016-11-30 | 大庆市华禹石油机械制造有限公司 | From swollen stopper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9874066B2 (en) * | 2010-12-16 | 2018-01-23 | Schlumberger Technology Corporation | Packer assembly with sealing bodies |
-
2016
- 2016-07-19 CN CN201610569602.8A patent/CN106014328B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201354617Y (en) * | 2009-03-04 | 2009-12-02 | 中国石油天然气股份有限公司 | Self-expanding packer |
| CN201460803U (en) * | 2009-08-07 | 2010-05-12 | 中国石油天然气股份有限公司 | Oil/water self-expanding packer |
| CN203175473U (en) * | 2013-03-26 | 2013-09-04 | 中国石油化工股份有限公司 | Pump passing type water-plugging packer |
| CN204532229U (en) * | 2015-01-20 | 2015-08-05 | 中国石油天然气股份有限公司 | Meet water self-expanding external packer of pipe |
| CN105065665A (en) * | 2015-07-28 | 2015-11-18 | 苏州市相城区明达复合材料厂 | Novel anti-corrosion rubber sealing gasket |
| CN205743823U (en) * | 2016-07-19 | 2016-11-30 | 大庆市华禹石油机械制造有限公司 | From swollen stopper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106014328A (en) | 2016-10-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20161221 Address after: 163000 Heilongjiang city of Daqing Province Light Industry Longfeng District Metro Applicant after: Xu Haiying Address before: 163000 Heilongjiang city of Daqing Province Light Industry Longfeng District Metro Applicant before: Daqing Hua Yu petroleum machinery Manufacturing Co., Ltd |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |