CN106837238B - A kind of self-locking rubber plug - Google Patents
A kind of self-locking rubber plug Download PDFInfo
- Publication number
- CN106837238B CN106837238B CN201611189663.8A CN201611189663A CN106837238B CN 106837238 B CN106837238 B CN 106837238B CN 201611189663 A CN201611189663 A CN 201611189663A CN 106837238 B CN106837238 B CN 106837238B
- Authority
- CN
- China
- Prior art keywords
- self
- locking
- rubber plug
- bruising
- locking mechanism
- Prior art date
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- 208000034656 Contusions Diseases 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 abstract description 5
- 239000002343 natural gas well Substances 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 7
- 239000004568 cement Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000013011 mating Effects 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)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Prostheses (AREA)
Abstract
The present invention relates to petroleum, cementing tool in natural gas well cementing process, specifically provide a kind of self-locking rubber plug, including rubber plug, bruising is shorted, self-locking mechanism, the rubber plug includes mandrel and self-locking head, mandrel front connects a self-locking head, it is characterized by: the rubber plug further includes the rubber bodies being sheathed on mandrel outer wall, self-locking head front is successively arranged card slot and O-ring from front to back, baffle ring is equipped with outside card slot, the self-locking head and the self-locking connection of self-locking mechanism, self-locking mechanism is connected to bruising and is shorted inside, solves the technical issues of plug is stayed in well cementation, guarantee that well cementation is not stayed and fills up sufficient later period job requirements.
Description
Technical field
The invention belongs to cementing tool fields in petroleum, natural gas well cementing process, and in particular to a kind of self-locking rubber plug.
Background technique
The scraping of casing inner diameters cement and the cementing requirements such as current existing rubber plug mainly satisfaction.Now with low-permeability oil
The lasting propulsion of gas development of resources, Gu more in conjunction with later period underground work in Completion Operations, for various considerations, casing string is more next
It is more complicated, how both can guarantee that scraping casing was also avoided that and has stayed cement plug.For above situation, domestic and international project personnel are also carried out
The improvement of rubber plug structure, is all realized by C ring self-locking mostly, and Reliability comparotive is poor, often stays cement plug, influences later period work
Industry.
Summary of the invention
The object of the present invention is to provide a kind of self-locking rubber plug, guarantees that well cementation is not stayed and fill up sufficient later period job requirements.
For this purpose, the present invention provides a kind of self-locking rubber plug, including rubber plug, bruising short circuit, self-locking mechanism, the rubber plug
Including mandrel and self-locking head, mandrel front connects a self-locking head, and the rubber plug further includes the rubber being sheathed on mandrel outer wall
Colloid, self-locking head front are successively arranged card slot and O-ring from front to back, are equipped with baffle ring outside card slot, the self-locking head with from
The self-locking connection of latch mechanism, self-locking mechanism are connected to bruising and are shorted inside.
The self-locking mechanism includes shell, is sequentially connected top cap, spring, self-locking block from top to bottom on the inside of housing top,
Self-locking block passes through outer shell bottom wall and self-locking head is self-locking, and the left side wall of shell, which is provided with, tightens jack.
O-ring is equipped between the bruising short circuit and self-locking mechanism roof front end.
The self-locking mechanism is threadedly attached in inside bruising short circuit, self-locking mechanism is short by tightening jack and bruising
It connects in succession, self-locking mechanism passes through screw thread and tightens the inside that jack is connected to bruising short circuit.
The baffle ring is located at the outside of card slot horizontal middle spindle.
The quantity of the baffle ring is 1, and the quantity for tightening jack is 4.
Beneficial effects of the present invention: this self-locking rubber plug provided by the invention, including rubber plug, bruising are shorted, from lock machine
Structure, the rubber plug include mandrel and self-locking head, and mandrel front connects a self-locking head, and the rubber plug further includes being sheathed on core
Rubber bodies on axis outer wall, self-locking head front are successively arranged card slot and O-ring from front to back, and baffle ring is equipped with outside card slot, described
Self-locking head and the self-locking connection of self-locking mechanism, self-locking mechanism be connected to bruising and be shorted internal, which realizes rubber plug
It is shorted with bruising self-locking, and prevents the rotation of rubber plug and self-locking mechanism, avoid and stay cement plug, improve the efficiency for boring plug.
Detailed description of the invention
The present invention is described in further details below with reference to attached drawing.
Fig. 1 is combined type rubber plug schematic diagram.
Fig. 2 is baffle ring position main view.
Fig. 3 is baffle ring position right view.
Fig. 4 is rubber plug structural front view.
Fig. 5 is bruising short circuit and self-locking mechanism structural front view.
Description of symbols: 1, rubber bodies, 2, mandrel, 3, self-locking head, 4, O-ring, 5, card slot, 6, baffle ring, 7, tighten it is slotting
Hole, 8, top cap, 9, spring, 10, self-locking block, 11, O-ring, 12, self-locking mechanism, 13, bruising short circuit, 14, rubber plug, 15, shell,
16, external screw thread, 17, internal screw thread.
Specific embodiment
Embodiment 1:
As shown in Figure 1-3, a kind of self-locking rubber plug, including rubber plug 14, bruising are shorted 13, self-locking mechanism 12, the glue
Plug 14 includes mandrel 2 and self-locking head 3, and 2 front of mandrel connects a self-locking head 3, and the rubber plug 14 further includes being sheathed on mandrel 2
Rubber bodies 1 on outer wall, 3 front of self-locking head are successively arranged card slot 5 and O-ring 4 from front to back, are equipped with baffle ring 6 outside card slot 5,
The self-locking head 3 and the self-locking connection of self-locking mechanism 12, self-locking mechanism 12 are connected to bruising and are shorted inside 13；The baffle ring 6
Positioned at the outside of 5 horizontal middle spindle of card slot, the quantity of baffle ring 6 is 1.
Wherein rubber bodies 1 are installed on rubber plug top, have certain bearing capacity, when rubber plug operation, meet in casing
The scraping of diameter cement and cementing requirements；The cooperation of self-locking mechanism 12 that card slot 5 and baffle ring 6 are shorted 13 with bruising can be achieved rubber plug and lock in certainly
On float collar, satisfaction avoids staying cement plug requirement；O-ring 4 realizes sealing, and baffle ring 6 avoids the rotation of rubber plug and self-locking mechanism, mentions
Height bores plug efficiency.
Embodiment 2:
As illustrated in figures 4-5, on the basis of embodiment 1, the self-locking mechanism 12 is including in shell 15,15 roof of shell
Side is sequentially connected top cap 8, spring 9, self-locking block 10 from top to bottom, and self-locking block 10 passes through 15 bottom wall of shell and self-locking head 3 is self-locking, outside
The left side wall of shell 15, which is provided with, tightens jack 7.
Rubber plug downlink under liquid-driving, the realization of self-locking block 10 is self-locking with self-locking head 3, passes through the O-ring 4 of self-locking head 3
It realizes sealing, substantially increases the reliability of sealing.
Embodiment 3:
As illustrated in figures 4-5, on the basis of embodiment 1-2, the bruising is shorted 13 and 12 roof front end of self-locking mechanism
Between be equipped with O-ring 11.O-ring 11 realizes that bruising is shorted 13 and the sealing of self-locking mechanism 12, and improve sealing well can
By property.
Embodiment 4:
As shown in figures 1,4 and 5, on the basis of embodiment 1-3, the self-locking mechanism 12 is threadedly attached in bruising
It is shorted inside 13, self-locking mechanism 12 is connect by tightening jack 7 with bruising short circuit 13, self-locking mechanism 12 passes through screw thread and tightens
Jack 7 is connected to the inside that bruising is shorted 13, and the quantity for tightening jack 7 is 4.It is threadedly coupled simple and convenient, raising work effect
Rate can make self-locking mechanism 12 and bruising be shorted 13 by tightening jack 7 and connect even closer, raising stability, screw thread and self-locking
Mechanism mating connection ensures to connect more firm and efficient.
The specific operation method is as follows:
(1) it requires to process each accessory according to attached drawing, connects combination rubber plug by thread forms；
(2) bruising short circuit, float collar, float shoe, casing, downhole tool are connected according to tubing string connection request and is specified down toward shaft bottom
Position；
(3) well cementation starts after replacing operation, by rubber plug out of well head investment bunch tube, starts to replace construction, rubber plug is in liquid
Body pushes lower downlink, and the realization of self-locking block 10 is self-locking with self-locking head 3, realizes sealing by the O-ring 4 of self-locking head 3,
(4) it replaces and finishes, rubber plug part is realized self-locking with float collar special construction (bruising is shorted the self-locking mechanism 12 in 13).
Working principle of the present invention is as follows:
Well cementation starts after replacing operation, by rubber plug 14 out of well head investment bunch tube, starts to replace construction, rubber plug 14 is in liquid
Body pushes lower downlink, and self-locking head 3 enters in self-locking mechanism 12, it is continued traveling downwardly liquid-driving, and self-locking head 3 squeezes self-locking block at this time
10, self-locking block 10 enters in card slot 5 under the action of spring 9, and realization rubber plug 14 is self-locking with self-locking mechanism 12, passes through self-locking head
3 O-ring 4 realizes the sealing of rubber plug 14 and self-locking mechanism 12, and baffle ring 6 avoids the rotation of rubber plug 14 and self-locking mechanism 12.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.
Claims (3)
1. a kind of self-locking rubber plug, including rubber plug (14), bruising are shorted (13), self-locking mechanism (12), the rubber plug (14) packet
Mandrel (2) and self-locking head (3) are included, mandrel (2) front connects a self-locking head (3), it is characterised in that: the rubber plug (14) is also
Including the rubber bodies (1) being sheathed on mandrel (2) outer wall, self-locking head (3) front is successively arranged card slot (5) and O-shaped from front to back
It encloses (4), is equipped with baffle ring (6) outside card slot (5), the self-locking head (3) and self-locking mechanism (12) self-locking connection, self-locking mechanism
(12) it is connected to bruising and is shorted (13) inside；The self-locking mechanism (12) include shell (15), on the inside of shell (15) roof from
Top to bottm is sequentially connected top cap (8), spring (9), self-locking block (10), and self-locking block (10) passes through shell (15) bottom wall and self-locking head
(3) self-locking, the left side wall of shell (15), which is provided with, tightens jack (7)；The bruising is shorted (13) and self-locking mechanism (12) roof
O-ring (11) are equipped between front end；The bruising is shorted (13) external screw thread (16) and is connected with float collar, internal screw thread (17) and casing
Be connected, self-locking mechanism (12) be threadedly attached in bruising be shorted (13) internal, self-locking mechanism (12) by tighten jack (7) with
Bruising, which is shorted (13) connection, self-locking mechanism (12) passes through screw thread and tightens jack (7) is connected to the inside that bruising is shorted (13).
2. self-locking rubber plug as described in claim 1, it is characterised in that: the baffle ring (6) is located at card slot (5) horizontal centre
The outside of axis.
3. self-locking rubber plug as claimed in claim 2, it is characterised in that: the quantity of the baffle ring (6) is 1, is tightened slotting
The quantity in hole (7) is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611189663.8A CN106837238B (en) | 2016-12-21 | 2016-12-21 | A kind of self-locking rubber plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611189663.8A CN106837238B (en) | 2016-12-21 | 2016-12-21 | A kind of self-locking rubber plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106837238A CN106837238A (en) | 2017-06-13 |
| CN106837238B true CN106837238B (en) | 2019-05-07 |
Family
ID=59139691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611189663.8A Active CN106837238B (en) | 2016-12-21 | 2016-12-21 | A kind of self-locking rubber plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106837238B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090224B (en) * | 2019-12-23 | 2023-06-30 | 中国石油天然气股份有限公司 | Guide shoe for well cementation and expansion suspension well cementation tubular column |
| 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 (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2143260Y (en) * | 1992-11-05 | 1993-10-06 | 徐田 | Rubber spigot structure for casing of oil well |
| WO2004051049A2 (en) * | 2002-12-03 | 2004-06-17 | Mikolajczyk Raymond F | Non-rotating cement wiper plugs |
| CN2923992Y (en) * | 2006-06-29 | 2007-07-18 | 克拉玛依市金鑫科技有限公司 | Self-locking rubber cork |
| CN201050335Y (en) * | 2007-02-13 | 2008-04-23 | 新疆石油管理局钻井工艺研究院 | Self-locking rubber plug combination for well cementing and completion |
| CN201738871U (en) * | 2010-06-17 | 2011-02-09 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Anti-rotating well cementation rubber stopper with self-locking mechanism |
| 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 |
| CN102071905A (en) * | 2011-02-18 | 2011-05-25 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Anti-rotation self-locking rubber plug used for well cementation |
| CN202249930U (en) * | 2011-10-18 | 2012-05-30 | 中国石油化工股份有限公司 | Self-locking rubber plug |
-
2016
- 2016-12-21 CN CN201611189663.8A patent/CN106837238B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2143260Y (en) * | 1992-11-05 | 1993-10-06 | 徐田 | Rubber spigot structure for casing of oil well |
| WO2004051049A2 (en) * | 2002-12-03 | 2004-06-17 | Mikolajczyk Raymond F | Non-rotating cement wiper plugs |
| CN2923992Y (en) * | 2006-06-29 | 2007-07-18 | 克拉玛依市金鑫科技有限公司 | Self-locking rubber cork |
| CN201050335Y (en) * | 2007-02-13 | 2008-04-23 | 新疆石油管理局钻井工艺研究院 | Self-locking rubber plug combination for well cementing and completion |
| CN201738871U (en) * | 2010-06-17 | 2011-02-09 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Anti-rotating well cementation rubber stopper with self-locking mechanism |
| 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 |
| CN102071905A (en) * | 2011-02-18 | 2011-05-25 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Anti-rotation self-locking rubber plug used for well cementation |
| CN202249930U (en) * | 2011-10-18 | 2012-05-30 | 中国石油化工股份有限公司 | Self-locking rubber plug |
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| Publication number | Publication date |
|---|---|
| CN106837238A (en) | 2017-06-13 |
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