CN203022673U - Suppression pressure quick releasing mechanism for downhole jar - Google Patents
Suppression pressure quick releasing mechanism for downhole jar Download PDFInfo
- Publication number
- CN203022673U CN203022673U CN 201220657126 CN201220657126U CN203022673U CN 203022673 U CN203022673 U CN 203022673U CN 201220657126 CN201220657126 CN 201220657126 CN 201220657126 U CN201220657126 U CN 201220657126U CN 203022673 U CN203022673 U CN 203022673U
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- Prior art keywords
- cone
- jarring
- jar
- hydraulic cylinder
- pressure quick
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Abstract
The utility model discloses a suppression pressure quick releasing mechanism for a downhole jar. The suppression pressure quick releasing mechanism comprises a hydraulic cylinder (1). A jarring rod (2) is arranged in the hydraulic cylinder. A cone (3) and a sealing seat (4) are arranged between a jarring body and the hydraulic cylinder. A bypass body (5) is arranged between the cone and the jarring body. The cone is in a tubular structure. An interference-fit face (6) is arranged on the bottom portion of the outer circle of the cone. A cone face (7) is arranged above the interference-fit face. A group of quick releasing oil leakage grooves (8) which are evenly distributed along a periphery are formed in the cone face. Compared with an existing valve-body-and-valve-needle-matching hydraulic assembly, the suppression pressure quick releasing mechanism is easy to machine and assemble, low in production cost, capable of achieving self-cleaning, not easy to block and convenient to maintain. Jarring delaying time is convenient to adjust. Compared with an existing cone-and-sealing-seat-and-bypass-body-matching hydraulic assembly, acceleration is large after jar release, and jarring force is strong.
Description
Technical field
The utility model relates to a kind of bumper jar with the pressure quick release mechanism of spraining, and belongs to the drilling tool technical field.
Background technology
In oil well or geological drilling process, drilling tool often can occur and be stuck in the interior situation of well, be commonly referred to as bit freezing.If the taking-up drilling tool, can only be applied with drilling tool, lower impact force, after making drilling tool loosening, drilling tool is salvaged.The hydraulic pressure assembly of existing hydraulic shock device has two kinds of mechanisms, a kind of employing valve body and needle coordinate, forming annulus earial drainage formation between valve opening on valve body and needle builds the pressure, make instrument produce the time-delay jarring, this hydraulic pressure assembly difficulty of processing is high, increased processing cost, valve opening and needle coordinate, and can not realize self-cleaning, easily stop up, must disassembly, cleaning ressemble after obstruction, between valve opening and needle, the annulus is smaller, and is very high to the assembly cleanliness requirement, causes assembly difficulty high, difficulty, maintenance difficult are regulated in the jarring time-delay.The second hydraulic pressure assembly adopts cone and seal receptacle to coordinate with bypass valve body, forming the earial drainage formation of dull and stereotyped gap between cone and seal receptacle builds the pressure, make instrument produce the time-delay jarring, owing to being interference fit between cone cylindrical and hydraulic cylinder endoporus, need to form high pressure sealing, this hydraulic pressure assembly exists earial drainage excessively slow in the moment that the pressure of spraining discharges, and makes bumper jar exist and discharges damping, bumper jar discharges post-acceleration and reduces, and causes jarring force to diminish.
Summary of the invention
The purpose of this utility model is, provides a kind of bumper jar with the pressure quick release mechanism of spraining.Solve existing spraining and press relieving mechanism processing difficulties and rate of release to wait slowly defective, make bumper jar reach best shock effect.The deficiency that exists to overcome existing reamer.
The technical solution of the utility model:
A kind of bumper jar comprises hydraulic cylinder with the pressure quick release mechanism of spraining, and is provided with the jarring body in hydraulic cylinder, is provided with cone and seal receptacle between jarring body and hydraulic cylinder, is provided with bypass valve body between cone and jarring body; Described cone is tubular structure, and the bottom of cone cylindrical is the interference fit face, and the top of interference fit face is the conical surface; The conical surface is provided with one group of quick release drain pan that is uniformly distributed along the circumference.
Aforementioned bumper jar is pressed in quick release mechanism with spraining, and the tapering of the described conical surface is greater than 1 °, less than 3 °.
Aforementioned bumper jar is pressed in quick release mechanism with spraining, and the end face of described cone is provided with the pressure drain pan of spraining, and sprains and presses the endoporus of drain pan and cone tangent.
Aforementioned bumper jar is pressed in quick release mechanism with spraining, and the lower end of described cone endoporus is horn mouth.
Compared with prior art, the existing valve body of the utility model coordinates the hydraulic pressure assembly to compare with needle, has easy processing, easily assembling, and cost of production is low, can realize self-cleaning, is difficult for stopping up, and is easy to maintenance.Be convenient to regulate the jarring time-delay.Coordinate the hydraulic pressure assembly to compare with existing cone with seal receptacle and bypass valve body, it is large that bumper jar discharges post-acceleration, and jarring force is strong.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of cone;
Fig. 3 is the schematic perspective view of cone;
Fig. 4 is the structural representation of existing cone.
Being labeled as in figure: 1-hydraulic cylinder, 2-jar stem, 3-cone, 4-seal receptacle, 5-bypass valve body, 6-interference fit face, the 7-conical surface, 8-discharge drain pan fast, 9-sprains and presses drain pan, 10-horn mouth.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing, but not as to any restriction of the present utility model.
A kind of bumper jar as shown in Figure 1, comprises hydraulic cylinder 1 with the pressure quick release mechanism of spraining, and is provided with jar stem 2 in hydraulic cylinder 1, is provided with cone 3 and seal receptacle 4 between jar stem 2 and hydraulic cylinder 1, is provided with bypass valve body 5 between cone 3 and jar stem 2; Described cone 3 as shown in Figures 2 and 3, cone 3 is tubular structure, the end face of cone 3 is provided with to sprain presses drain pan 9, sprains and presses drain pan 9 tangent with the endoporus of cone 3.The lower end of cone 3 endoporus is horn mouth 10.The bottom of cone 3 cylindricals is interference fit face 6, and the top of interference fit face 6 is the conical surface 7; The tapering of the conical surface 7 is greater than 1 °, less than 3 °.The conical surface 7 is provided with one group of quick release drain pan 8 that is uniformly distributed along the circumference.
Fig. 4 is the structural representation of existing cone.The interference fit face 6(sealing surface of original cone) after, external conicity is 1 °, and this tapering is too little, and the gap between hydraulic cylinder is too little, and is too slow at the moment draining that discharges, and causes bumper jar to discharge post-acceleration too little, and jarring force intensity is low.The utility model changes external conicity into when guaranteeing that the gap increases, and does not affect the angle of cone guidance quality in hydraulic cylinder, and its tapering is greater than 1 °, less than 3 °.And at cylindrical interference fit face 6(sealing surface) after have that width is that 16～32mm, the degree of depth are 1～3 on periphery, quantity is that the 8(specification width, the degree of depth opened in different size shows that concrete condition decides) quick release drain pan 8, this groove one is to increase the draining gap, the 2nd, can puncture oil film, reach best draining effect.
Claims (4)
1. a bumper jar is with the pressure quick release mechanism of spraining, comprise hydraulic cylinder (1), be provided with jar stem (2) in hydraulic cylinder (1), be provided with cone (3) and seal receptacle (4) between jar stem (2) and hydraulic cylinder (1), be provided with bypass valve body (5) between cone (3) and jar stem (2); It is characterized in that: described cone (3) is tubular structure, and the bottom of cone (3) cylindrical is interference fit face (6), and the top of interference fit face (6) is the conical surface (7); The conical surface (7) is provided with one group of quick release drain pan (8) that is uniformly distributed along the circumference.
2. bumper jar is with the pressure quick release mechanism of spraining according to claim 1, and it is characterized in that: the tapering of the described conical surface (7) is greater than 1 °, less than 3 °.
3. bumper jar with the pressure quick release mechanism of spraining, is characterized in that according to claim 1: the end face of described cone (3) is provided with to sprain presses drain pan (9), sprains and presses drain pan (9) tangent with the endoporus of cone (3).
4. bumper jar is with the pressure quick release mechanism of spraining according to claim 1, and it is characterized in that: the lower end of described cone (3) endoporus is horn mouth (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220657126 CN203022673U (en) | 2012-12-04 | 2012-12-04 | Suppression pressure quick releasing mechanism for downhole jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220657126 CN203022673U (en) | 2012-12-04 | 2012-12-04 | Suppression pressure quick releasing mechanism for downhole jar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203022673U true CN203022673U (en) | 2013-06-26 |
Family
ID=48646664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220657126 Expired - Lifetime CN203022673U (en) | 2012-12-04 | 2012-12-04 | Suppression pressure quick releasing mechanism for downhole jar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203022673U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812477A (en) * | 2015-11-30 | 2017-06-09 | 中国石油天然气股份有限公司 | A kind of surface bumper jar |
| CN109372459A (en) * | 2018-11-22 | 2019-02-22 | 贵州高峰石油机械股份有限公司 | A kind of method and device of stable jarring release time |
-
2012
- 2012-12-04 CN CN 201220657126 patent/CN203022673U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812477A (en) * | 2015-11-30 | 2017-06-09 | 中国石油天然气股份有限公司 | A kind of surface bumper jar |
| CN106812477B (en) * | 2015-11-30 | 2018-11-16 | 中国石油天然气股份有限公司 | A kind of surface bumper jar |
| CN109372459A (en) * | 2018-11-22 | 2019-02-22 | 贵州高峰石油机械股份有限公司 | A kind of method and device of stable jarring release time |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |