CN109882111B - Anti-blocking anti-falling through lubrication wedge type sealer - Google Patents
Anti-blocking anti-falling through lubrication wedge type sealer Download PDFInfo
- Publication number
- CN109882111B CN109882111B CN201910290201.2A CN201910290201A CN109882111B CN 109882111 B CN109882111 B CN 109882111B CN 201910290201 A CN201910290201 A CN 201910290201A CN 109882111 B CN109882111 B CN 109882111B
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- section
- wedge
- cone
- annular sealing
- diameter
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- 238000005461 lubrication Methods 0.000 title claims description 13
- 238000007789 sealing Methods 0.000 claims abstract description 86
- 239000004677 Nylon Substances 0.000 claims description 30
- 229920001778 nylon Polymers 0.000 claims description 30
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000010030 laminating Methods 0.000 abstract 2
- 230000003068 static effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Abstract
The invention provides an anti-blocking anti-falling through-lubricating wedge type sealer, relates to the technical field of oil field development and oil extraction equipment, and solves the technical problem that in the prior art, a cone upwards extrudes an annular sealing wedge to enable the annular sealing wedge to be attached to a well wall too tightly. The cone is provided with first tapering section and first isometric section, annular sealing wedge is provided with second tapering section and second isometric section, annular sealing wedge keeps static with the wall of a well laminating when the cone goes up, the first isometric section of cone is for the inside chamber wall slip of second isometric section of annular sealing wedge, because the diameter of second isometric section is not less than the diameter of first isometric section, and the length of first isometric section is greater than second isometric section, so the cone goes up the first isometric section of only that contacts with second isometric section, the first tapering section of surface slope setting can not contact with second isometric section, the effect of extrusion annular sealing wedge can not be produced, avoided annular sealing wedge and well bore sleeve laminating too tightly finally to cause the condition emergence of card die.
Description
Technical Field
The invention relates to the technical field of oil field development and oil extraction equipment, in particular to an anti-blocking anti-falling through lubrication wedge type sealer.
Background
The applicant submitted a patent application with the application number of CN201510752598.4 and the application number of 2015, 11 and 4, which discloses a wedge-type sealer, and submitted a patent application with the application number of ZL201720448591.8 and 26 in 2017, which discloses a self-lubricating anti-drop wedge-type sealer and an anti-drop annular sealing wedge thereof, and through laboratory and mining oil well tests, the conditions that the sealing wedge is blocked, a nylon cylinder is separated from a flexible sealing sleeve, an anti-drop groove in the nylon cylinder is embedded into the flexible sealing sleeve and bites the inner wall of the flexible sealing sleeve still occur frequently. The reason for this is that when the sealer is sent down the well by the pipe column, the cone extrudes the annular sealing wedge upwards when the pipe column is lifted up by the joint so that the annular sealing wedge is tightly attached to the well wall, and when the pipe column is lifted down by the joint, the weight of the pipe column can not push the sealer down, so that the sealer is blocked. Even if the sealer is sent to the preset position in the pit with special care, the probability of no pressure is high, because the strong adsorption force of the flexible sealing sleeve made of rubber to the cone makes the annular sealing wedge unable to descend in the remaining 1/3 of the cone without the oil containing groove section, thereby no pressure is exerted and finally sealing failure is caused.
Disclosure of Invention
The invention aims to provide an anti-blocking anti-falling through-lubricating wedge type sealer, which is used for solving the technical problem that in the prior art, a cone upwards extrudes an annular sealing wedge to enable the annular sealing wedge to be attached to a well wall too tightly. The preferred technical solutions of the technical solutions provided by the invention can produce a plurality of technical effects (difficult to repeat, low in cost and convenient to use) as described in detail below.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides an anti-blocking anti-falling through-lubricating wedge type sealer which comprises a cone and an annular sealing wedge sleeved on the cone, wherein the cone comprises a first taper section and a first constant diameter section fixedly connected to the upper end of the first taper section; the annular sealing wedge is provided with a second taper section and a second constant diameter section fixedly connected to the upper end of the second taper section; the second constant diameter section has a length less than the first constant diameter section, and the second constant diameter section has a diameter not less than the diameter of the first constant diameter section.
Preferably, the annular sealing wedge comprises a flexible sealing sleeve and a nylon barrel, the flexible sealing sleeve is sleeved on the cone, the nylon barrel is sleeved on the flexible sealing sleeve, and the inner wall of the flexible sealing sleeve is provided with the second taper section and the second equal diameter section.
Preferably, the upper end of the outer wall of the flexible sealing sleeve is provided with a sealing cap, the lower part of the sealing cap is provided with an anti-drop ring, the inner wall of the nylon barrel is provided with an anti-drop groove, and the anti-drop groove is meshed with the anti-drop ring so that the nylon barrel is sleeved on the flexible sealing sleeve.
Preferably, the top of the sealing cap is provided with an interference ring.
Preferably, the cone is provided with an oil containing groove.
Preferably, the diameter of the interference ring is greater than the diameter of the sleeve.
Preferably, the length of the cone is greater than the length of the annular sealing wedge.
Preferably, the diameter of the upper end of the first tapered section is smaller than the diameter of the lower end of the first tapered section.
Preferably, the diameter of the upper end of the second tapered section is smaller than the diameter of the lower end of the second tapered section.
Preferably, a plurality of gaps are axially arranged on the outer wall of the nylon barrel.
According to the invention, the first taper section and the first equal diameter section are arranged on the cone, the second taper section and the second equal diameter section are arranged on the annular sealing wedge, the pipe column is used for conveying the sealer into the well and lifting the pipe column in a joint way, when the cone is in an upward direction, the annular sealing wedge is contacted with the well casing so as to keep still, the first equal diameter section arranged on the cone slides relative to the cavity wall of the second equal diameter section arranged inside the annular sealing wedge, and the diameter of the second equal diameter section is not smaller than that of the first equal diameter section, and the length of the first equal diameter section is larger than that of the second equal diameter section, so that only the first taper section which is in contact with the second equal diameter section when the cone is in an upward direction is not contacted with the second equal diameter section, the effect of extruding the annular sealing wedge is not generated, and the situation that the annular sealing wedge is stuck with the well casing tightly and finally causes blocking is avoided.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is: the cone structure diagram provided by the embodiment of the invention;
fig. 2 is: the embodiment of the invention provides a structure diagram of a flexible sealing sleeve;
fig. 3 is: the embodiment of the invention provides a structure diagram of a nylon barrel;
fig. 4 is: the embodiment of the invention provides a structural diagram of an annular sealing wedge;
fig. 5 is: the embodiment of the invention provides a structure diagram of the wedge sealer in descending;
fig. 6 is: the embodiment of the invention provides a structure diagram of cone uplink.
1, a cone; 11. a first taper section; 12. a first constant diameter section; 2. an annular sealing wedge; 21. a flexible sealing sleeve; 211. a second taper segment; 212. a second constant diameter section; 213. anti-slip ring; 214. a sealing cap; 215. an interference ring; 22. a nylon barrel; 221. an anti-falling groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
In the description of the present invention, it should be understood that the terms "center", "side", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in fig. 1 are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1 to 6, the invention provides an anti-blocking anti-falling through-lubrication wedge type sealer, which comprises a cone 1 and an annular sealing wedge 2 sleeved on the cone 1, wherein the cone 1 comprises a first taper section 11 and a first constant diameter section 12 fixedly connected to the upper end of the first taper section 11; the annular sealing wedge 2 is provided with a second conical section 211 and a second constant diameter section 212 fixedly connected to the upper end of the second conical section 211; the second constant diameter section 212 has a length less than the first constant diameter section 12 and the second constant diameter section 212 has a diameter not less than the diameter of the first constant diameter section 12.
According to the invention, the first taper section 11 and the first equal diameter section 12 are arranged on the cone 1, the second taper section 211 and the second equal diameter section 212 are arranged on the annular sealing wedge 2, the pipe column is used for conveying the sealer into a well and lifting the pipe column in a single joint, when the cone 1 is in an upward direction, the annular sealing wedge 2 is in contact with a well casing so as to keep still, the first equal diameter section 12 arranged on the cone 1 slides relative to the cavity wall of the second equal diameter section 212 arranged inside the annular sealing wedge 2, and because the diameter of the second equal diameter section 212 is not smaller than the diameter of the first equal diameter section 12 and the length of the first equal diameter section 12 is larger than the length of the second equal diameter section 212, only the first equal diameter section 12 which is in contact with the second equal diameter section 212 when the cone 1 is in an upward direction, the first taper section 11 which is obliquely arranged on the surface is not in contact with the second equal diameter section 212, the effect of extruding the annular sealing wedge 2 is not generated, and the situation that the annular sealing wedge 2 is stuck and finally dead due to the well wall is avoided.
As an alternative embodiment, the annular sealing wedge 2 comprises a flexible sealing sleeve 21 and a nylon tube 22, the flexible sealing sleeve 21 is sleeved on the cone 1, the length of the cone 1 is larger than that of the annular sealing wedge 2, the nylon tube 22 is sleeved on the flexible sealing sleeve 21, and a second taper section 211 and a second constant diameter section 212 are arranged on the inner wall of the flexible sealing sleeve 21.
The inner wall of the flexible sealing sleeve 21 is provided with a second taper section 211, the lower part of the second taper section 211 is a second equal diameter section 212, the diameter of the second equal diameter section 212 is not smaller than that of the first equal diameter section 12, the length of the second equal diameter section 212 is smaller than that of the first equal diameter section 12, preferably 30 mm, and the diameter of the upper end of the second taper section 211 is smaller than that of the lower end of the second taper section 211 so as to present a shape with a large lower end and a small upper end, and the use of the cone 1 is better matched; the nylon tube 22 is mainly made of nylon material, the nylon material has certain hardness and elasticity, plastic deformation can not occur in a certain stress range, the outer diameter of the nylon tube 22 is the same as that of the sleeve, the inner diameter of the nylon tube 22 is matched with that of the flexible sealing sleeve 21, and the shape of the nylon tube is particularly that the lower end is big and the upper end is small.
As an alternative embodiment, the cone 1 is provided with an oil-containing groove.
The outer surface of the cone 1 is provided with the oil containing groove, after lubricating oil or lubricant is filled in the oil containing groove, the cone 1 can be self-wetted, and the adsorption force of the flexible sealing sleeve 21 on the cone 1 can be lightened or eliminated under the state of no other liquid wetting, so that the flexible sealing sleeve 21 can more smoothly descend on the cone 1, and the purpose of sealing an oil sleeve annular space is realized by more wedge and more tightening with a sleeve.
As an alternative implementation manner, the upper end of the outer wall of the flexible sealing sleeve 21 is provided with the sealing cap 214, the lower part of the sealing cap 214 is provided with the anti-drop ring 213, when the nylon tube 22 is sleeved on the flexible sealing sleeve 21, the upper end of the outer wall of the nylon tube 22 is propped against the lower end of the sealing cap 214, the inner wall of the nylon tube 22 is provided with the anti-drop groove 221, the anti-drop ring 213 is matched with the anti-drop ring 213 in size and position, the widths and the depths of the groove body and the ring body are consistent, and finally the anti-drop groove 221 and the anti-drop ring 213 are meshed with each other to form a complete meshing structure, so as to form the annular sealing wedge 2 shown in the figure 4.
As an alternative embodiment, the top of the sealing cap is provided with an interference ring 215, and the anti-drop ring 213 is provided at the lower part of the sealing cap 214, the diameter of the interference ring 215 being larger than the diameter of the sleeve.
The annular sealing wedge 2 is sleeved on the cone 1, after the combined wedge type sealer is put down to a designated position in a well, the sleeve is pressed to push the annular sealing wedge to move downwards, the annular space is sealed by oil and the sleeve, the diameter of the interference ring 215 is larger than that of the sleeve, because the manufacturing material of the flexible sealing sleeve is mainly rubber, the sleeve has the characteristics of oil resistance, high temperature resistance and impact resistance, and the sleeve can be extruded into a sleeve of a shaft through good flexibility of the sleeve when the sleeve is put down, so that the annular sealing wedge 2 is tightly attached to the inner wall of the sleeve, and the preferable design scheme is that the diameter of the interference ring 215 is larger than the diameter of the sleeve by 2 mm.
As an alternative embodiment, the diameter of the upper end of the first taper section 11 is smaller than the diameter of the lower end of the first taper section 11, that is, the upper end of the first taper section 11 has a shape with a small upper end and a large lower end, the diameter of the upper end of the first taper section 11 is equal to the diameter of the first constant diameter section 12, that is, the whole body of the cone 1 is integrally formed, the connection part of the first taper section 11 and the first constant diameter section 12 is in natural transition, and the problem that the damage to the structure of the annular sealing wedge 2 sleeved on the cone 1 caused by edges and corners in the structure is avoided.
As an alternative embodiment, a plurality of slits are axially arranged on the outer wall of the nylon tube 22, when the nylon tube is extruded by external pressure, the slits are pressed to reduce the circumference of the circumference formed by the outer wall of the nylon tube 22, the circumference is reduced, the extrusion condition between the nylon tube 22 and the outside is lightened, the pressure is reduced, and the nylon tube 22 is protected.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a prevent card anticreep logical wet wedge sealer which characterized in that, includes cone (1) and cover establish annular sealing wedge (2) on cone (1), wherein:
the cone (1) comprises a first taper section (11) and a first constant diameter section (12) fixedly connected to the upper end of the first taper section (11);
the annular sealing wedge (2) is provided with a second taper section (211) and a second constant diameter section (212) fixedly connected to the upper end of the second taper section (211);
the second constant diameter section (212) has a length less than the first constant diameter section (12), and the second constant diameter section (212) has a diameter not less than the diameter of the first constant diameter section (12).
2. The anti-seize anti-disengagement through-lubrication wedge sealer as claimed in claim 1, wherein: the annular sealing wedge (2) comprises a flexible sealing sleeve (21) and a nylon tube (22), the flexible sealing sleeve (21) is sleeved on the cone (1), the nylon tube (22) is sleeved on the flexible sealing sleeve (21), and the inner wall of the flexible sealing sleeve (21) is provided with a second taper section (211) and a second constant diameter section (212).
3. The anti-seize anti-disengagement through-lubrication wedge sealer as claimed in claim 2, wherein: the upper end of the outer wall of the flexible sealing sleeve (21) is provided with a sealing cap (214), the lower part of the sealing cap (214) is provided with an anti-drop ring (213), the inner wall of the nylon tube (22) is provided with an anti-drop groove (221), and the anti-drop groove (221) is meshed with the anti-drop ring (213) so that the nylon tube (22) is sleeved on the flexible sealing sleeve (21).
4. The anti-seize anti-slip through-lubrication wedge sealer as claimed in claim 3, wherein: an interference ring (215) is arranged at the top of the sealing cap (214).
5. The anti-seize anti-disengagement through-lubrication wedge sealer as claimed in claim 1, wherein: an oil containing groove is formed in the cone (1).
6. The anti-seize anti-disengagement through-lubrication wedge sealer as claimed in claim 4, wherein: the interference ring (215) has a diameter greater than the diameter of the sleeve.
7. The anti-seize anti-disengagement through-lubrication wedge sealer as claimed in claim 1, wherein: the length of the cone (1) is greater than the length of the annular sealing wedge (2).
8. The anti-seize anti-disengagement through-lubrication wedge sealer as claimed in claim 1, wherein: the diameter of the upper end of the first taper section (11) is smaller than the diameter of the lower end of the first taper section (11).
9. The anti-seize anti-disengagement through-lubrication wedge sealer as claimed in claim 1, wherein: the diameter of the upper end of the second conical section (211) is smaller than the diameter of the lower end of the second conical section (211).
10. The anti-seize anti-disengagement through-lubrication wedge sealer as claimed in claim 2, wherein: a plurality of gaps are axially formed in the outer wall of the nylon barrel (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910290201.2A CN109882111B (en) | 2019-04-11 | 2019-04-11 | Anti-blocking anti-falling through lubrication wedge type sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910290201.2A CN109882111B (en) | 2019-04-11 | 2019-04-11 | Anti-blocking anti-falling through lubrication wedge type sealer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109882111A CN109882111A (en) | 2019-06-14 |
| CN109882111B true CN109882111B (en) | 2024-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910290201.2A Active CN109882111B (en) | 2019-04-11 | 2019-04-11 | Anti-blocking anti-falling through lubrication wedge type sealer |
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| Country | Link |
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| CN (1) | CN109882111B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115874970B (en) * | 2023-03-08 | 2023-06-09 | 天津市益彰石油科技发展有限公司 | Bidirectional pressure-bearing wedge sealer |
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| CN109882111A (en) | 2019-06-14 |
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