CN107120085B - Oil casing pipe plug - Google Patents
Oil casing pipe plug Download PDFInfo
- Publication number
- CN107120085B CN107120085B CN201710443530.7A CN201710443530A CN107120085B CN 107120085 B CN107120085 B CN 107120085B CN 201710443530 A CN201710443530 A CN 201710443530A CN 107120085 B CN107120085 B CN 107120085B
- Authority
- CN
- China
- Prior art keywords
- limiting plate
- plug
- pipe plug
- sealing cover
- plug shell
- 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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- 238000007789 sealing Methods 0.000 claims abstract description 27
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 18
- 238000010276 construction Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
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)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Closures For Containers (AREA)
Abstract
The invention provides an oil casing pipe plug, which comprises a plug shell and an anti-theft boss, wherein the plug shell is cylindrical, and the side wall of the plug shell is provided with an external thread; the top end of the plug shell is provided with an upper sealing cover with steps; the upper step and the lower step of the upper sealing cover are both round, and a through hole is arranged at the eccentric position of the upper sealing cover; the anti-theft boss is arranged to be T-shaped and comprises a limiting plate and a support column, the limiting plate is arranged to be circular, the diameter of the limiting plate is smaller than that of the upper step end face, the support column is arranged at the center of the limiting plate, the through hole and the support column are both arranged to be circular, and the end portion of the support column penetrating through the through hole is rotatably connected with the plug shell through a vertical limiting part. The oil casing pipe plug is simple in structure and convenient to use, and meets the requirement of on-site anti-theft pipe plugs.
Description
Technical Field
The invention belongs to the field of petroleum equipment, and particularly relates to an anti-theft plug.
Background
In the process of petroleum development, because of construction requirements such as well flushing, pressure testing, pipeline flushing and the like, some screw holes for construction are reserved at an opening oil pipe, an oil collecting oil pipe, an oil conveying oil pipe and the like, when the construction is not carried out, the screw holes are sealed by using screw plugs so as to prevent liquid and gas from leaking, because the screw plugs are easily detached, the situation that the screw plugs are stolen occurs, normal production is seriously influenced, crude oil loss is caused, and large-area crude oil pollution is formed. The existing anti-theft plug can play a role in preventing theft to a certain extent, but cannot prevent theft, so that an oil casing pipe plug which is not easy to remove is needed on site.
Disclosure of Invention
In view of this, the invention aims to provide an oil casing pipe plug, so as to achieve the purposes of simple structure, convenient use and meeting the requirement of on-site anti-theft pipe plug.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an oil casing pipe plug comprises a plug shell and an anti-theft boss;
the plug shell is cylindrical, and the side wall of the plug shell is provided with an external thread;
the top end of the plug shell is provided with an upper sealing cover with steps; the upper step and the lower step of the upper sealing cover are both circular; a through hole is formed in the eccentric position of the upper sealing cover;
the anti-theft boss is arranged to be T-shaped and comprises a limiting plate and a support column, the limiting plate is arranged to be circular, the diameter of the limiting plate is smaller than that of the upper step end face, the support column is arranged at the center of the limiting plate, the cross section of the perforation and the cross section of the support column are both arranged to be circular, and the end portion of the support column penetrating through the perforation is rotatably connected with the plug shell through a vertical limiting part.
Further, when the plug shell is used, the thread is embedded into a casing coupling, and the other end of the casing coupling is in threaded connection with the casing.
Further, the vertical limiting part is provided as a nut, and the nut is in threaded connection with the strut.
Further, the main structure further comprises a baffle plate, and the baffle plate is fixed with the bottom end of the plug shell in a sealing mode.
Further, the outer side walls of the upper sealing cover and the limiting plate are both set to be smooth polished surfaces.
Further, the height between the upper step and the lower step is smaller than the height of the limiting plate.
A spanner for an oil casing pipe plug is provided with a stepped groove, and the shape and the size of the groove are matched with the combined shape and the size of an upper sealing cover and an anti-theft boss.
Further, the recess includes big round hole and the small circle hole of aperture size difference, big round hole and small circle hole decentraction.
Further, the top end of the wrench is further provided with a protrusion, and the protrusion is transversely provided with a second through hole.
Compared with the prior art, the oil casing pipe thread plug has the following advantages:
the anti-theft boss is not concentric with the upper sealing cover of the plug shell, the effect that the anti-theft boss cannot be disassembled by a non-wrench is achieved by skillfully utilizing an eccentric structure, and the anti-theft effect is achieved;
the through hole, the pillar, the upper sealing cover and the boss are all round, so that the preparation is simple and the use is convenient.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic cross-sectional view of a main body structure according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a main body structure according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a special wrench according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a use state of the oil casing pipe plug according to an embodiment of the present invention.
Description of reference numerals:
1-plugging the shell; 11-going up a step; 12-descending stairs; 13-perforating; 14-a nut; 15-a baffle; 2-anti-theft boss; 21-a limiting plate; 22-a pillar; 3-a wrench; 31-a groove; 32-protrusions; 33-second perforation; 4-casing collar; 5-sleeve pipe.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1-4, an oil casing pipe plug comprises a plug shell 1 and an anti-theft boss 2, wherein the plug shell 1 is cylindrical, and the side wall of the plug shell 1 is provided with external threads; the top end of the plug shell 1 is provided with an upper sealing cover with steps; the upper step 11 and the lower step 12 of the upper sealing cover are both circular; a through hole 13 is arranged at the eccentric position of the upper sealing cover; the anti-theft boss 2 is T-shaped and comprises a limiting plate 21 and a support column 22, the limiting plate 21 is circular, the diameter of the limiting plate 21 is smaller than that of the end face of the upper step 11, and the support column 22 is arranged at the center of the limiting plate 21; the cross sections of the through hole 13 and the strut 22 are both circular, and the end part of the strut 22 penetrating through the through hole 13 is rotatably connected with the plug shell 1 through a vertical limiting piece; the wrench 3 for the oil casing pipe plug is provided with a stepped groove 31, and the shape and the size of the groove 31 are matched with the combined shape and the size of the upper sealing cover and the anti-theft boss 2;
the vertical stop is provided as a nut 14, and the nut 14 is threadedly coupled to the pillar 22. The diameter of the nut 14 is larger than the diameter of the through hole 13, so that the limiting plate 21 can rotate relative to the plug shell 1 but can not be separated from the plug shell 1.
The main structure further comprises a baffle plate 15, and the baffle plate 15 is fixed with the bottom end of the plug shell 1 in a sealing mode. The baffle 15 acts as a seal.
The upper step 11 and the lower step 12 of the upper sealing cover are both circular, and the limiting plate 21 is also circular; the outer side walls of the upper sealing cover and the limiting plate 21 are both provided with smooth polished surfaces; the height between the upper step 11 and the lower step 12 is smaller than the height of the limit plate 21; the top end of the wrench 3 is further provided with a protrusion 32, and the protrusion 32 is transversely provided with a second through hole 33; the groove 31 comprises a large round hole and a small round hole with different aperture sizes, and the large round hole and the small round hole are not concentric. The through holes 13, the supporting columns 22, the upper sealing covers and the limiting plates 21 are all round, so that the preparation is simple and the use is convenient.
During preparation, the support column 22 penetrates through the through hole 13 and is fixed and limited by the nut 14; and then the baffle 15 is welded and fixed with the bottom end of the plug shell 1.
When the plug shell 1 is used, threads are embedded into a casing coupling 4, and the other end of the casing coupling 4 is in threaded connection with a casing 5; the anti-theft boss 2 is lower than the casing coupling 4, and the limiting plate 21 can rotate relative to the plug casing 1, so that a common tool cannot drive the plug casing 1 to rotate to separate from the casing coupling 4; the anti-theft boss 2 is not concentric with the upper sealing cover of the plug shell 1, and the eccentric structure is ingeniously utilized to achieve the purpose that the plug shell 1 is assembled and disassembled and the wrench 3 is matched for use, so that the oil sleeve plug is assembled and disassembled.
The groove 31 of the wrench 3 can be sleeved with the upper steps 11 of the limiting plate 21 and the upper sealing cover, the oil casing pipe plug is screwed up by clockwise rotation, when the oil casing pipe plug needs to be dismounted, the wrench 3 is sleeved into the upper steps 11 of the limiting plate 21 and the upper sealing cover, and the oil casing pipe plug is dismounted by anticlockwise rotation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the spirit and principles of the present invention, but rather as the description of the preferred embodiments of the present invention.
Claims (6)
1. The utility model provides an oil casing plug which characterized in that: the anti-theft pipe plug comprises a pipe plug shell (1) and an anti-theft boss (2), wherein the pipe plug shell (1) is cylindrical, and an external thread is arranged on the side wall of the pipe plug shell (1);
the top end of the plug shell (1) is provided with an upper sealing cover with steps; the upper step (11) and the lower step (12) of the upper sealing cover are both circular; a perforation (13) is arranged at the eccentric position of the upper sealing cover;
theftproof boss (2) set up to the T type, including limiting plate (21) and pillar (22), limiting plate (21) set up to circular, the diameter of limiting plate (21) is less than the diameter of last ladder (11) terminal surface, pillar (22) set up the central point at limiting plate (21) and put, perforation (13) and pillar (22) cross section all set up to circular, and pillar (22) tip that runs through perforation (13) is connected through vertical locating part and plug casing (1) rotation.
2. The oil casing pipe plug according to claim 1, characterized in that: when the plug shell (1) is used, threads are embedded into the casing coupling (4), and the other end of the casing coupling (4) is in threaded connection with the casing (5).
3. The oil casing pipe plug according to claim 1, characterized in that: the vertical limiting piece is arranged as a nut (14), and the nut (14) is in threaded connection with a strut (22).
4. The oil casing pipe plug according to claim 2, wherein: the plug is characterized by further comprising a baffle (15), wherein the baffle (15) is fixed with the bottom end of the plug shell (1) in a sealing mode.
5. The oil casing pipe plug according to claim 1, characterized in that: the outer side walls of the upper sealing cover and the limiting plate (21) are both set to be smooth polished surfaces.
6. The oil casing pipe plug according to claim 5, wherein: the height between the upper step (11) and the lower step (12) is smaller than that of the limiting plate (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710443530.7A CN107120085B (en) | 2017-06-13 | 2017-06-13 | Oil casing pipe plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710443530.7A CN107120085B (en) | 2017-06-13 | 2017-06-13 | Oil casing pipe plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107120085A CN107120085A (en) | 2017-09-01 |
| CN107120085B true CN107120085B (en) | 2020-04-10 |
Family
ID=59730417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710443530.7A Active CN107120085B (en) | 2017-06-13 | 2017-06-13 | Oil casing pipe plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107120085B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2605847A (en) * | 1949-06-24 | 1952-08-05 | Carl J Mccoy | Wet plug for well pipes |
| US5095988A (en) * | 1989-11-15 | 1992-03-17 | Bode Robert E | Plug injection method and apparatus |
| CN201106450Y (en) * | 2007-10-22 | 2008-08-27 | 王志国 | Device for sampling anti-theft oil |
| CN201943635U (en) * | 2010-12-30 | 2011-08-24 | 孙爱军 | Anti-theft device for producing well head casing |
| CN202324859U (en) * | 2011-11-16 | 2012-07-11 | 鄯善工业园区东永石油机械制造有限公司 | Oil leakage and theft preventing device for oil production tree |
| CN202746559U (en) * | 2012-06-19 | 2013-02-20 | 李美静 | Anti-theft screwed plug of oil discharging hole in speed changing box of oil pumping machine |
| CN202900140U (en) * | 2012-11-24 | 2013-04-24 | 王蓬勃 | Anti-theft screwed plug |
| US9121243B1 (en) * | 2012-11-06 | 2015-09-01 | Ross Headifen | Multifunction well plug dual locking elements |
| CN105781535A (en) * | 2016-05-04 | 2016-07-20 | 王洪绪 | Multifunctional wellhead data recording device |
-
2017
- 2017-06-13 CN CN201710443530.7A patent/CN107120085B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2605847A (en) * | 1949-06-24 | 1952-08-05 | Carl J Mccoy | Wet plug for well pipes |
| US5095988A (en) * | 1989-11-15 | 1992-03-17 | Bode Robert E | Plug injection method and apparatus |
| CN201106450Y (en) * | 2007-10-22 | 2008-08-27 | 王志国 | Device for sampling anti-theft oil |
| CN201943635U (en) * | 2010-12-30 | 2011-08-24 | 孙爱军 | Anti-theft device for producing well head casing |
| CN202324859U (en) * | 2011-11-16 | 2012-07-11 | 鄯善工业园区东永石油机械制造有限公司 | Oil leakage and theft preventing device for oil production tree |
| CN202746559U (en) * | 2012-06-19 | 2013-02-20 | 李美静 | Anti-theft screwed plug of oil discharging hole in speed changing box of oil pumping machine |
| US9121243B1 (en) * | 2012-11-06 | 2015-09-01 | Ross Headifen | Multifunction well plug dual locking elements |
| CN202900140U (en) * | 2012-11-24 | 2013-04-24 | 王蓬勃 | Anti-theft screwed plug |
| CN105781535A (en) * | 2016-05-04 | 2016-07-20 | 王洪绪 | Multifunctional wellhead data recording device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107120085A (en) | 2017-09-01 |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20201102 Address after: 300000 No. three, Dagang Oilfield, Binhai New Area, Tianjin Patentee after: Tianjin Dagang Oilfield Petroleum Engineering Research Institute Drilling Technology Development Co.,Ltd. Patentee after: DAGANG OILFIELD GROUP Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 300000 No. three, Dagang Oilfield, Binhai New Area, Tianjin Patentee before: Tianjin Dagang Oilfield Petroleum Engineering Research Institute Drilling Technology Development Co.,Ltd. Patentee before: DAGANG OILFIELD GROUP Co.,Ltd. |