CN106121583A - Self-locking float shoe - Google Patents
Self-locking float shoe Download PDFInfo
- Publication number
- CN106121583A CN106121583A CN201610769207.4A CN201610769207A CN106121583A CN 106121583 A CN106121583 A CN 106121583A CN 201610769207 A CN201610769207 A CN 201610769207A CN 106121583 A CN106121583 A CN 106121583A
- Authority
- CN
- China
- Prior art keywords
- float shoe
- self
- plug
- float
- becket
- 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
- 239000011083 cement mortar Substances 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 208000034656 Contusions Diseases 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of self-locking float shoe, including float shoe body, plug and a float shoe hemisphere, described float shoe chamber body wall is provided with becket, and described plug upper surface is provided with several spring support.Described becket is stairstepping, and cascaded surface is with the horizontal 35 ° of angles.Described spring support includes the support member that one end is fixed on rosette, the other end contacts with described float shoe chamber body wall.Described support member is the rod bearing diagonal being uniformly arranged to described float shoe chamber body wall by described rosette respectively.The invention has the beneficial effects as follows: not using float collar, few setting of casing, creeping into and realize the anti-of cement mortar in the case of chi and refund less, operation is simple, economical and practical, safe and reliable, shortens drilling period, saves construction operation cost.
Description
Technical field
The present invention relates to the attachment field of petroleum gas well cementation, float particularly to a kind of self-locking
Footwear.
Background technology
In cementing operation after cemented up is starched generally under enter plug, in sleeve pipe, isolate prepad fluid and cement mortar, and scrape
Mud residue on decannulation inwall, it is to avoid mixed in sleeve pipe of cement mortar and prepad fluid and mud alters pollution, to ensure water
Mud pure.The plug appearance that prior art uses is full rubber structure, and inside has metal structure, and bruising is played closing and sprained
Pressure effect, if float collar float plug is malfunctioning, causes and refunds, and causes and stays plug too much.In order to avoid float collar is malfunctioning, in work progress
Under enter one to two float collars and a float shoe, add case off between float collar and float collar and between float collar and float shoe simultaneously, this
Sample needs exist for enough pockets to meet requirement.The combination of plug and float collar does not possess to be prevented refunding function, owing to using volume
Outer float collar and the increase of drilling depth cause the increasing of cost.
Summary of the invention
The technical problem to be solved is to provide a kind of has the anti-self-locking float shoe refunding function of automatically locking.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is: a kind of self-locking float shoe, including float shoe originally
Body, plug and float shoe hemisphere, described float shoe chamber body wall is provided with becket, and described plug upper surface is provided with several spring and props up
Frame.
Described becket is stairstepping, and cascaded surface is with the horizontal 35 ° of angles.
Described spring support includes that one end is fixed on rosette, the other end contacts with described float shoe chamber body wall
Support member.
Described support member is provided with 3 or 4.
Described support member is that the rod being uniformly arranged to described float shoe chamber body wall by described rosette respectively is oblique
Support.
Described float shoe hemisphere is provided with one.
The invention has the beneficial effects as follows: do not using float collar, few setting of casing, creeping into and realize cement mortar in the case of chi less
Preventing refunding, operation is simple, economical and practical, safe and reliable, shortens drilling period, saves construction operation cost.
Accompanying drawing explanation
Fig. 1 a is profile before plug bruising of the present invention；
Fig. 1 b is that plug of the present invention is by profile during step；
Fig. 1 c is that plug of the present invention is by profile after step surface；
Fig. 2 is the annulus top view with step；
Fig. 3 is the metallic plate top view with spring support.
Wherein:
1, float shoe body 2, plug 3, float shoe hemisphere 4, becket 5, spring support
5-1, rosette 5-2, support member
Detailed description of the invention
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings:
As shown in Figures 1 to 3, a kind of self-locking float shoe, including float shoe body 1, plug 2 and a float shoe hemisphere 3, described float shoe
Body 1 internal chamber wall is provided with becket 4, and described becket 4 is stairstepping, and cascaded surface is with the horizontal 35 ° of angles.Described plug 2
Upper surface screw is fixed with several spring support 5, described spring support 5 include one end be fixed on rosette 5-1, the other end
Support member 5-2 contacted with described float shoe body 1 internal chamber wall, described support member 5-2 is provided with 3 or 4, described support member
5-2 is the rod bearing diagonal being uniformly arranged to described float shoe body 1 internal chamber wall by described rosette 5-1 respectively, spring support 5
Follow described plug 2 at float shoe body 1 inner chamber to move up and down, when mobile to the step with the becket 4 of float shoe internal chamber wall setting
Time following, rod bearing diagonal is just stuck in step bottom, does not continues to return up.
Processing the rosette of an a diameter of 80mm, thickness is individual according to requirement of strength processing 3-4 on 10mm, rosette
Spring support 5 so that spring support 5 can shrink to direction, the center of circle, in elastic force effect after external force is laid down under external force
Under can opposite direction rebound again, be supported on the lower surface of becket 4 in float shoe inner body wall.To have the rosette of spring support
" the upper surface of the plug that production string is used that is screwed in 5 1/2.
Operation principle:
When plug 2 is by becket 4, hierarchic structure makes spring support 5 shrink to direction, the center of circle so that plug 2 is permissible
Passing through becket 4, after by becket 4, spring support 5 opens top under elastic force effect and arrives metal ring 4 lower surface,
Plug 2 is under the effect of metal rack 5 and becket 4, it is impossible to refund.
Plug 2 tests 10Min in the unidirectional pressure-bearing of 14Mpa, and plug 2 is stingless, and leakage ruptures vestige, meets oil well and prevents refunding function.
Claims (6)
1. a self-locking float shoe, including float shoe body (1), plug (2) and float shoe hemisphere (3), is characterized in that: described float shoe body
(1) internal chamber wall is provided with becket (4), and described plug (2) upper surface is provided with several spring support (5).
A kind of self-locking float shoe the most according to claim 1, is characterized in that: described becket (4) is stairstepping, cascaded surface
With the horizontal 35 ° of angles.
A kind of self-locking float shoe the most according to claim 1, is characterized in that: described spring support (5) includes that one end is fixed on
The support member (5-2) that rosette (5-1) is upper, the other end contacts with described float shoe body (1) internal chamber wall.
A kind of self-locking float shoe the most according to claim 3, is characterized in that: described support member (5-2) is provided with 3 or 4.
5. according to a kind of self-locking float shoe described in claim 3 or 4, it is characterized in that: described support member (5-2) is for respectively by institute
State the rod bearing diagonal that rosette (5-1) is uniformly arranged to described float shoe body (1) internal chamber wall.
A kind of self-locking float shoe the most according to claim 1, is characterized in that: described float shoe hemisphere (3) is provided with one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769207.4A CN106121583A (en) | 2016-08-30 | 2016-08-30 | Self-locking float shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769207.4A CN106121583A (en) | 2016-08-30 | 2016-08-30 | Self-locking float shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106121583A true CN106121583A (en) | 2016-11-16 |
Family
ID=57273177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610769207.4A Pending CN106121583A (en) | 2016-08-30 | 2016-08-30 | Self-locking float shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106121583A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779462A (en) * | 2020-08-02 | 2020-10-16 | 濮阳中原三力创高机械设备有限公司 | Floating hoop and rubber plug interlocking device and application method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979821A (en) * | 2010-11-13 | 2011-02-23 | 中国石油集团西部钻探工程有限公司 | Self-locking cementing stopper combination device |
| CN202690006U (en) * | 2012-05-31 | 2013-01-23 | 中国石油化工集团公司 | Self-sealing well cementing rubber plug assembly device |
| US20150211324A1 (en) * | 2014-01-24 | 2015-07-30 | Baker Hughes Incorporated | Disintegrating Agglomerated Sand Frack Plug |
| CN204729052U (en) * | 2015-06-10 | 2015-10-28 | 新疆再兴科苑石油科技有限公司 | Self-locking well cementation seal rubber plug and bruising device |
-
2016
- 2016-08-30 CN CN201610769207.4A patent/CN106121583A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979821A (en) * | 2010-11-13 | 2011-02-23 | 中国石油集团西部钻探工程有限公司 | Self-locking cementing stopper combination device |
| CN202690006U (en) * | 2012-05-31 | 2013-01-23 | 中国石油化工集团公司 | Self-sealing well cementing rubber plug assembly device |
| US20150211324A1 (en) * | 2014-01-24 | 2015-07-30 | Baker Hughes Incorporated | Disintegrating Agglomerated Sand Frack Plug |
| CN204729052U (en) * | 2015-06-10 | 2015-10-28 | 新疆再兴科苑石油科技有限公司 | Self-locking well cementation seal rubber plug and bruising device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111779462A (en) * | 2020-08-02 | 2020-10-16 | 濮阳中原三力创高机械设备有限公司 | Floating hoop and rubber plug interlocking device and application method |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161116 |
|
| WD01 | Invention patent application deemed withdrawn after publication |