CN106555567A - High angle hole, horizontal cementing abrasionproof plug - Google Patents
High angle hole, horizontal cementing abrasionproof plug Download PDFInfo
- Publication number
- CN106555567A CN106555567A CN201510616478.1A CN201510616478A CN106555567A CN 106555567 A CN106555567 A CN 106555567A CN 201510616478 A CN201510616478 A CN 201510616478A CN 106555567 A CN106555567 A CN 106555567A
- Authority
- CN
- China
- Prior art keywords
- plug
- body resistance
- strengthening tablets
- abrasionproof
- high angle
- 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
- 239000003292 glue Substances 0.000 claims abstract description 75
- 238000005728 strengthening Methods 0.000 claims abstract description 66
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 16
- 239000012530 fluid Substances 0.000 abstract description 16
- 208000034656 Contusions Diseases 0.000 abstract description 13
- 239000011083 cement mortar Substances 0.000 abstract description 13
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 6
- 239000004568 cement Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000116 mitigating effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 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
- E21B33/134—Bridging plugs
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)
- Medicinal Preparation (AREA)
Abstract
The present invention provides a kind of high angle hole, horizontal cementing abrasionproof plug, including：The glue wing and plug core, multiple described glue wings are fixedly installed on plug core towards identical direction；Body resistance-strengthening tablets are provided between at least two adjacent glue wings, the lower end of body resistance-strengthening tablets is fixedly connected with the glue wing below, the upper end of body resistance-strengthening tablets is used to support the glue wing above which, make the glue wing above body resistance-strengthening tablets not receive load-bearing.The present invention is especially suitable for high angle hole, horizontal well, deep-well, ultradeep well cementing operation, and the present invention innovatively increased body resistance-strengthening tablets, body resistance-strengthening tablets are responsible for undertaking glue wing weight, the glue wing is responsible for extension and remaining drilling fluid and cement mortar and bruising sealing, the glue wing does not stress, therefore will mitigate and will not even wear and tear, deformation, efficiently solve the serious problems that plug causes to wear and tear during descending with sleeve friction, avoid drilling fluid and cement mortar directly contact, ensure cement mortar and drilling fluid be effectively isolated and the later stage of cementing the well bruising, greatly improve cementing quality, reduce construction risk.
Description
Technical field
The present invention relates to petroleum industry well cementation field, more particularly to a kind of high angle hole, horizontal cementing construction are used
Down-hole plug, is mainly used in the isolating of cement mortar and drilling fluid in work progress, casing wall remnants drilling fluid cleanings
With well cementing impact pressure.
Background technology
At present, cementing plug is widely used in well operations are normally drilled, in drillng operation, technology
Under sleeve pipe and production casing it is complete after need to carry out well cementing operation, cementing plug is indispensable portion in cementing operation
Part, Main Function is：(1) cement pumped in sleeve pipe is isolated with drilling fluid, is caused the accident with anti-pollution；
(2) the remaining drilling fluid on sleeve pipe is wiped off in case pollution cement mortar (batching pig)；(3) well cementing impact pressure, prevents
Only for sky in sleeve pipe, well cementation is pointed out to terminate.
However, traditional cementing plug is in high angle hole or descending horizontal cementing construction, cementing plug is in well
Lower long distance running, as the deadweight of cementing plug can cause side and casing wear serious, particularly high temperature ring
Wear and tear even more serious under border or deform, it is impossible to complete to be effectively isolated and bruising, can so cause drilling fluid to cement
Slurry pollution and bruising failure, affect cementing quality and engineering erroneous judgement, quality accident and work are likely to result in when serious
Journey accident.
In view of this, in order to the deadweight solved due to cementing plug causes side serious with casing wear, it is impossible to complete
Into the technological deficiency being effectively isolated with bruising, it is solid that the present inventor designs a kind of high angle hole, horizontal well
Well abrasionproof plug.
The content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of high angle hole, horizontal cementing abrasionproof plug,
Body resistance-strengthening tablets are the increase in mainly so as to which the plug for being supported does not receive load-bearing, it is ensured that plug is when descending to the glue wing
Centralizing function, it is to avoid plug undue wear.
To reach above-mentioned purpose, the present invention provides a kind of high angle hole, horizontal cementing abrasionproof plug, and which includes：
The glue wing and plug core, multiple described glue wings are fixedly installed on plug core towards identical direction；Wherein：At least
Resilient body resistance-strengthening tablets are set between two adjacent glue wings, the lower end of body resistance-strengthening tablets is fixed with the glue wing below and connected
Connect, the upper end of body resistance-strengthening tablets is used to support the glue wing above which, make the glue wing above body resistance-strengthening tablets not receive load-bearing.The glue wing
It is responsible for wiping remaining drilling fluid and cement mortar and bruising sealing off, and as the glue wing does not receive load-bearing, therefore will mitigate very
Will not extremely wear and tear, deform, ensure that sealing during bruising.It is of course also possible to adjacent in each two
Body resistance-strengthening tablets are equipped between the glue wing, it is ensured that each glue wing does not receive load-bearing, it is preferable that general body resistance-strengthening tablets are installed
Two rows, but must be by plug center circle between two rows body resistance-strengthening tablets.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：Surrounding for described body resistance-strengthening tablets is maximum straight
Diameter of the footpath less than the glue wing, it can be ensured that, while remaining drilling fluid and cement mortar is wiped off, body resistance-strengthening tablets are or not the glue wing
Can damage, the centralizing function of body resistance-strengthening tablets is also unaffected.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：Described high angle hole, horizontal well are solid
Well abrasionproof plug is applied in sleeve pipe, and the circular maximum gauge of described body resistance-strengthening tablets is more than the internal diameter of sleeve pipe, to protect
Card can be touched the inwall of sleeve pipe by the glue wing of body resistance-strengthening tablets righting.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：Described body resistance-strengthening tablets adopt loop configuration,
Mounting process can not only be simplified, and being capable of robust structure.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：Using annular cloth between the adjacent glue wing
At least six body resistance-strengthening tablets put are supported, for example, can be six, eight body resistance-strengthening tablets of equidistant placement in a ring etc.,
Material can not only be saved, and being capable of reduces cost.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：The cross sectional shape of described body resistance-strengthening tablets is
S-shaped so as to which elasticity is preferably.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：The cross sectional shape of described body resistance-strengthening tablets is
Arch (also is understood as C fonts) so as to which elasticity is preferably.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：Described body resistance-strengthening tablets select spring steel
Into, but be not limited thereto.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：The downside of the described glue wing with plug core is in
120 ° of ± 10 ° of arrangements, as the glue wing employs the design of wide-angle, can effectively enter in sleeve pipe, especially
Which is to scrape the slurry liquid in telescopic joint groove, and conveniently can be loaded in cementing cement head.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：Described body resistance-strengthening tablets adopt sulfur with the glue wing
Change mode is fixed, or other connected modes such as grafting, interference fit.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：Each glue wing is independently installed, Bu Huiyin
The loss of one glue wing and cause other glue wings to be scattered, it is big with intensity, the advantages of stability is high.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：Described plug core can select aluminium bar and make,
The described glue wing may also be employed vulcanization with plug core and be fixed.
Described high angle hole, horizontal cementing abrasionproof plug, wherein：Described plug core is except presenting
Outside smooth surface structure, reeded form can also be set using surface, plug wicking surface has groove true
Protect stable connection, the reliability filled between core and the glue wing.
In sum, the invention has the beneficial effects as follows：
1st, the present invention innovatively increased body resistance-strengthening tablets, and body resistance-strengthening tablets are responsible for undertaking plug weight, and the glue wing is responsible for extension
Fall remaining drilling fluid and cement mortar and bruising sealing.The glue wing does not stress, therefore will not even wear and tear mitigating, become
Shape, efficiently solves the serious problems that plug causes to wear and tear during descending with sleeve friction, so as to avoid boring
Well liquid and cement mortar directly contact, it is ensured that cement mortar and drilling fluid be effectively isolated and the later stage of cementing the well bruising, greatly
It is big to improve cementing quality, reduce construction risk.
2nd, abrasionproof plug of the invention is particularly well-suited to the well cementation of high angle hole, horizontal well, deep-well, ultradeep well
Construction, has a extensive future.
Description of the drawings
Hereinafter the present invention will be described in more detail based on embodiment refer to the attached drawing.Wherein：
Fig. 1 is high angle hole of the invention, the structural representation of horizontal cementing abrasionproof plug.
Description of reference numerals：The 1- glue wings；2- body resistance-strengthening tablets；3- fills in core.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not according to actual ratio.
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in figure 1, which is high angle hole provided by the present invention, the structure of horizontal cementing abrasionproof plug showing
It is intended to.The present invention is a kind of high angle hole, horizontal cementing abrasionproof plug, and which mainly includes：The glue wing 1, help
Positive 2 and plug core 3.Wherein, multiple described glue wings 1 are fixedly installed in plug core 3 towards identical direction
On, body resistance-strengthening tablets 2, the lower end of body resistance-strengthening tablets 2 and glue below are provided between at least two adjacent glue wings 1
The wing 1 is fixedly connected, and the upper end of body resistance-strengthening tablets 2 is free end, for protecting the glue wing 1 above which, makes body resistance-strengthening tablets
The glue wing 1 above in the of 2 does not receive load-bearing.The glue wing 1 is responsible for wiping remaining drilling fluid and cement mortar and bruising sealing off, and
As the glue wing 1 does not receive load-bearing, therefore will not even wear and tear mitigating, deform, when ensure that bruising
Sealing.
It is of course also possible to be equipped with body resistance-strengthening tablets 2 between the adjacent glue wing 1 of each two, it is ensured that each glue wing
1 does not receive load-bearing, therefore will not even wear and tear mitigating, deform, and ensure that sealing during bruising.
Preferably, general body resistance-strengthening tablets 2 install two rows, but must be by 1 center circle of plug in two rows body resistance-strengthening tablets
Between.
In a preferred embodiment, the section of described body resistance-strengthening tablets 2 is S-shaped；In another preferred embodiment,
The section of described body resistance-strengthening tablets 2 it is arched (not shown in figure, " arch " of the present invention it also will be understood that
For C fonts)；Additionally, body resistance-strengthening tablets 2 can also adopt other shapes, can realize that centralizing function is defined.
And for the purpose of mounting process, robust structure is simplified, described body resistance-strengthening tablets 2 can adopt loop configuration；
Or for the purpose of material, reduces cost is saved, can adopt between the adjacent glue wing 1 and be circular layout at least
Six body resistance-strengthening tablets 2 are supported, e.g. six, eight body resistance-strengthening tablets 2 of equidistant placement etc. in a ring.
Wherein, the circular maximum gauge of described body resistance-strengthening tablets 2 need to be slightly larger than the internal diameter of sleeve pipe (not shown),
The circular maximum gauge of such as body resistance-strengthening tablets 2 can be more than the internal diameter 1-3cm of sleeve pipe, to ensure by body resistance-strengthening tablets righting
The glue wing can touch the inwall of sleeve pipe.And the circular maximum gauge of body resistance-strengthening tablets 2 is slightly less than the diameter of the glue wing 1,
The circular maximum gauge of such as body resistance-strengthening tablets 2 is smaller than the diameter 1-3cm of the glue wing, it can be ensured that the glue wing 1 is being wiped off
While remaining drilling fluid and cement mortar, body resistance-strengthening tablets 2 will not be damaged, and the centralizing function of body resistance-strengthening tablets 2 will not also be received
To impact.
Described body resistance-strengthening tablets 2 can be made from spring steel, but are not limited.The described glue wing 1 can select
Rubber is made, for example nitrile rubber, but is not limited.Described body resistance-strengthening tablets 2 can be using sulfuration with the glue wing 1
Mode is fixed, or other connected modes such as grafting, interference fit.
In another preferred embodiment, the upside of the glue wing 1 can be with 3 rectangular arrangement of plug core, the downside of the glue wing 1
Can be arranged in obtuse angle with plug core 3, as the glue wing 1 employs the design of wide-angle, sleeve pipe can be effectively entered
It is interior, especially the slurry liquid in telescopic joint groove is scraped.And, the downside of the glue wing 1 employs wide-angle
Design, it is convenient to load in cementing cement head (not shown).Wherein, the downside of the glue wing 1 and plug core
3 in 120 ° of ± 10 ° of arrangements, but can be not limited.
Each glue wing 1 is independently installed, other glue wings 1 will not be caused to be scattered because a glue wing 1 is lost, tool
There is the advantages of intensity is big, and stability is high.
Additionally, described plug core 3 can select aluminium bar and make.It should be noted that plug core 3 material not with
This is limited.
The described glue wing 1 may also be employed vulcanization with plug core 3 and be fixed, and the glue wing 1 will be plug core 3 complete
In portion is coated on, the glue wing 1 is caused to be scattered from lower end abjection so as to efficiently avoid plug core 3, it is ensured that overall
Structure it is firm.
Described plug core 3 can also be adopted in addition to it can present smooth surface structure as shown in Figure 1
Surface sets reeded form (not shown), fill in core 3 surface have groove be able to ensure that plug core 3 with
Stable connection, reliability between the glue wing 1.
From the foregoing, it will be observed that biggest feature of the invention is in the improvement to traditional plug, body resistance-strengthening tablets are increased, protected
Centralizing function of plug when descending is demonstrate,proved, it is to avoid plug undue wear.
In sum, the present invention be directed to the plug caused when cementing plug is moved in high angle hole, horizontal well
Wear problem, and body resistance-strengthening tablets are fixedly connected on plug, the centralizing function of body resistance-strengthening tablets alleviates plug in High angle
Friction when well section and descending horizontal well well section between the glue wing and casing wall, efficiently solves plug in descending process
In cause the serious problems worn and torn with sleeve friction, so as to avoid drilling fluid and cement mortar directly contact, it is ensured that water
Mud and drilling fluid be effectively isolated and the later stage of cement the well bruising, greatly improve cementing quality, reduction construction risk.
The abrasionproof plug of the present invention is particularly well-suited to the cementing operation of high angle hole, horizontal well, deep-well, ultradeep well, should
With having a extensive future.
Although by reference to preferred embodiment, invention has been described, without departing from the scope of the present invention
In the case of, various improvement can be carried out to which and part therein can be replaced with equivalent.Especially, only
Otherwise there is structural hazard, the every technical characteristic being previously mentioned in each embodiment can have been combined in any way
Come.The invention is not limited in specific embodiment disclosed herein, but including falling within the scope of the appended claims
All technical schemes.
Claims (10)
1. a kind of high angle hole, horizontal cementing abrasionproof plug, which includes：The glue wing and plug core, it is multiple described
The glue wing towards identical direction be fixedly installed in plug core on；It is characterized in that：In at least two adjacent glue wings
Between set resilient body resistance-strengthening tablets, the lower end of body resistance-strengthening tablets is fixedly connected with the glue wing below, the upper end of body resistance-strengthening tablets
For supporting the glue wing above which, the glue wing above body resistance-strengthening tablets is made not receive load-bearing.
2. high angle hole according to claim 1, horizontal cementing abrasionproof plug, it is characterised in that：
Diameter of the circular maximum gauge of described body resistance-strengthening tablets less than the glue wing.
3. high angle hole according to claim 1, horizontal cementing abrasionproof plug, it is characterised in that：
Described high angle hole, horizontal cementing abrasionproof plug are applied in sleeve pipe, described body resistance-strengthening tablets around maximum
With diameter greater than the internal diameter of sleeve pipe.
4. high angle hole according to claim 1,2 or 3, horizontal cementing abrasionproof plug, its feature
It is：Described body resistance-strengthening tablets adopt loop configuration.
5. high angle hole according to claim 1,2 or 3, horizontal cementing abrasionproof plug, its feature
It is：Supported using at least six body resistance-strengthening tablets being circular layout between the adjacent glue wing.
6. high angle hole according to claim 1,2 or 3, horizontal cementing abrasionproof plug, its feature
It is：The cross sectional shape of described body resistance-strengthening tablets is S-shaped.
7. high angle hole according to claim 1,2 or 3, horizontal cementing abrasionproof plug, its feature
It is：The cross sectional shape of described body resistance-strengthening tablets is arch.
8. high angle hole according to claim 1,2 or 3, horizontal cementing abrasionproof plug, its feature
It is：Described body resistance-strengthening tablets are made from spring steel.
9. high angle hole according to claim 1,2 or 3, horizontal cementing abrasionproof plug, its feature
It is：Described body resistance-strengthening tablets are fixed using vulcanization with the glue wing.
10. high angle hole according to claim 1, horizontal cementing abrasionproof plug, it is characterised in that：
The downside of the glue wing is with plug core in 120 ° of ± 10 ° of arrangements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510616478.1A CN106555567A (en) | 2015-09-24 | 2015-09-24 | High angle hole, horizontal cementing abrasionproof plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510616478.1A CN106555567A (en) | 2015-09-24 | 2015-09-24 | High angle hole, horizontal cementing abrasionproof plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106555567A true CN106555567A (en) | 2017-04-05 |
Family
ID=58415296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510616478.1A Pending CN106555567A (en) | 2015-09-24 | 2015-09-24 | High angle hole, horizontal cementing abrasionproof plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106555567A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643827A (en) * | 2018-04-23 | 2018-10-12 | 中核通辽铀业有限责任公司 | A kind of hole structure construction method increasing ground-dipping uranium extraction pumping liquid measure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1562430A1 (en) * | 1988-03-28 | 1990-05-07 | Туркменский научно-исследовательский и проектный филиал Всесоюзного научно-исследовательского института природных газов | Apparatus for cementing wells |
| SU1739008A1 (en) * | 1989-12-19 | 1992-06-07 | А.К. Шаульский, Г.М. Шабанов, В.В. Бодасюк и Г.А. Емель ненко | Method for construction of rising water-drainage well |
| CN2670590Y (en) * | 2004-01-08 | 2005-01-12 | 中国石油天然气集团公司 | Self-sealing rubber plug of casing drilling and well cementation |
| CN2731090Y (en) * | 2004-09-14 | 2005-10-05 | 吉林石油集团有限责任公司 | Hydraulic oil-pipe blocking device for blowout-prevent work of water injection well |
| CN200989185Y (en) * | 2006-10-17 | 2007-12-12 | 刘新东 | Expanding flushing packer |
| CN102536160A (en) * | 2010-12-24 | 2012-07-04 | 中国石油化工股份有限公司 | Ball seat type rubber plug system for liner cementing |
| CN203383779U (en) * | 2013-08-09 | 2014-01-08 | 胜利油田胜机石油装备有限公司 | Turbulent flow leakage-proof cementing tool |
| CN103556970A (en) * | 2013-11-08 | 2014-02-05 | 西安航威石化设备有限公司 | Combined self-lock rubber plug |
| CN203547616U (en) * | 2013-11-15 | 2014-04-16 | 大庆市永晨石油科技有限公司 | Expanding tail pipe hanger |
-
2015
- 2015-09-24 CN CN201510616478.1A patent/CN106555567A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1562430A1 (en) * | 1988-03-28 | 1990-05-07 | Туркменский научно-исследовательский и проектный филиал Всесоюзного научно-исследовательского института природных газов | Apparatus for cementing wells |
| SU1739008A1 (en) * | 1989-12-19 | 1992-06-07 | А.К. Шаульский, Г.М. Шабанов, В.В. Бодасюк и Г.А. Емель ненко | Method for construction of rising water-drainage well |
| CN2670590Y (en) * | 2004-01-08 | 2005-01-12 | 中国石油天然气集团公司 | Self-sealing rubber plug of casing drilling and well cementation |
| CN2731090Y (en) * | 2004-09-14 | 2005-10-05 | 吉林石油集团有限责任公司 | Hydraulic oil-pipe blocking device for blowout-prevent work of water injection well |
| CN200989185Y (en) * | 2006-10-17 | 2007-12-12 | 刘新东 | Expanding flushing packer |
| CN102536160A (en) * | 2010-12-24 | 2012-07-04 | 中国石油化工股份有限公司 | Ball seat type rubber plug system for liner cementing |
| CN203383779U (en) * | 2013-08-09 | 2014-01-08 | 胜利油田胜机石油装备有限公司 | Turbulent flow leakage-proof cementing tool |
| CN103556970A (en) * | 2013-11-08 | 2014-02-05 | 西安航威石化设备有限公司 | Combined self-lock rubber plug |
| CN203547616U (en) * | 2013-11-15 | 2014-04-16 | 大庆市永晨石油科技有限公司 | Expanding tail pipe hanger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643827A (en) * | 2018-04-23 | 2018-10-12 | 中核通辽铀业有限责任公司 | A kind of hole structure construction method increasing ground-dipping uranium extraction pumping liquid measure |
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| PB01 | Publication | ||
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Application publication date: 20170405 |