CN204371180U - Bumper jar - Google Patents
Bumper jar Download PDFInfo
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- CN204371180U CN204371180U CN201420859406.0U CN201420859406U CN204371180U CN 204371180 U CN204371180 U CN 204371180U CN 201420859406 U CN201420859406 U CN 201420859406U CN 204371180 U CN204371180 U CN 204371180U
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- mandrel
- bumper jar
- shell body
- positive cover
- mud
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Abstract
The utility model provides a kind of bumper jar, belongs to technical field of mechanical equipment.Described bumper jar comprises shell body, and described shell body lower end is bolted with lower contact; Be provided with mandrel in described shell body, the lower end of described mandrel is bolted with washing pipe; Supporting positive cover is socketed with between described shell body and described mandrel; Supporting positive cover sealing ring is socketed with between described supporting positive cover and described mandrel.The bumper jar that the utility model embodiment provides, by arranging the mode of supporting positive cover sealing ring between supporting positive cover and shell body, enable supporting positive cover sealing ring effectively isolated outside mud, outside mud is made not easily to flow to the inside of bumper jar, thus improve the sealing of the inside of bumper jar, the availability of the internal component of bumper jar is improved, improving existing bumper jar easily allows mud penetrate into inside by the gap between its each parts, causes the problem that inner body damages.
Description
Technical field
The utility model relates to mechanical field, in particular to a kind of bumper jar.
Background technology
In drillng operation, due to complicated geological (Plastic Flow and extruding as stratum in cave-in, bore hole), technical measures improper (as termination of pumping overlong time, bit balling etc.), drilling tool usually occurs to be hampered bit freezing, bumper jar is one of effective tool removing lock of tool drilling.In prior art, bumper jar discharges suddenly the energy storage of drill string by mechanical release, revolves the strong jarring added up or down, stuck point is loosened, thus reach the object of unfreezing to stuck point.But existing bumper jar, in application process, easily allows mud penetrate into inside by the gap between its each parts, causes inner body to damage.
Utility model content
The purpose of this utility model is to provide a kind of bumper jar, easily allows mud penetrate into inside by the gap between its each parts, cause the problem that inner body damages to improve existing bumper jar.
The utility model is achieved in that
A kind of bumper jar, comprise shell body, described shell body lower end is bolted with lower contact; Be provided with mandrel in described shell body, the lower end of described mandrel is bolted with washing pipe; Supporting positive cover is socketed with between described shell body and described mandrel; Supporting positive cover sealing ring is socketed with between described supporting positive cover and described mandrel.
Further, described supporting positive cover has been arranged circumferentially the first groove towards the one side of described mandrel along described mandrel, and be provided with mud-scraping ring in described first groove, described mud-scraping ring is sheathed on described mandrel.When bumper jar is in underground work, outside has a lot of mud, after mud enters into bumper jar inside, the surface of internal component can be attached to, can cause damage to components and parts, when at supporting positive cover after the face of mandrel arranges mud-scraping ring, mud-scraping ring can be socketed in outside mandrel, and mud-scraping ring can be fitted with the external surface of mandrel preferably near the one side of mandrel, when mandrel axially moves from the top down, mud-scraping ring can the mud of mandrel outer surface to extension, avoid mud to enter into bumper jar inside along with mandrel, cause damage to internal component.
Further, support member is provided with between described mud-scraping ring and described first bottom portion of groove.Mud-scraping ring is after long-term use, surface has larger wearing and tearing, cause its can not well and mandrel surface laminating, thus make mud when mandrel axially moves from top to bottom, along with mandrel flow to bumper jar inside, the components and parts of bumper jar inside are caused damage, and after between mud-scraping ring and the first bottom portion of groove, support member is set, what make that mud-scraping ring can be permanently effective fits with the external surface of mandrel, thus makes mud-scraping ring effectively the mud of mandrel surface attachment to be hung.
Further, shell body sealing ring is socketed with between described supporting positive cover and described shell body.When bumper jar is in underground work, some mud can be adhered in its surface, when mud is by the gap between supporting positive cover and shell body, after entering into bumper jar inside, can be attached to the surface of internal component, can cause damage to components and parts.And after arrange sealing ring between supporting positive cover and shell body, the mud of mandrel surface enters into the inside of bumper jar to enable sealing circle effectively stop, thus improve the components and parts availability of bumper jar inside.
Further, core sleeve is socketed with between described supporting positive cover and described shell body.When bumper jar works, mandrel can do axial operation from top to bottom or from bottom to top, but, the movement locus of mandrel is not absolute straight line, it can cause extruding to the components and parts of bumper jar inside when bumper jar internal motion, thus reduce the physical life of components and parts.After being socketed core sleeve more outward at supporting positive cover, core sleeve can further righting mandrel, reducing the probability of mandrel extruding internal component when moving, improve the components and parts availability of bumper jar inside.
Further, be socketed with jump ring outside described washing pipe, the lower end of described washing pipe is provided with back of the body cap, and described washing pipe is also socketed with floating piston, and described floating piston is between described jump ring and described back of the body cap.And after floating piston is set, floating piston is divided into internal cavity and flow passage chamber the cavity between mandrel and shell body, internal cavity is the part of more than floating piston, and flow passage chamber is the part of below floating piston, thus mud can only be flow to bumper jar from flow passage chamber, and the internal cavity being provided with components and parts can not be flow to.
Further, floating piston sealing ring is socketed with between described floating piston and described shell body.Have between floating piston and shell body and need little gap, and the moisture in mud can flow to by described gap the internal cavity being provided with components and parts.And after be socketed with floating piston sealing ring between floating piston and described shell body, floating piston sealing ring effectively can completely cut off the moisture in mud, thus improve the availability of the components and parts of bumper jar inside.
Further, piston supporting positive cover is provided with between described floating piston and described shell body.Piston supporting positive cover further can fix floating piston, make its slide time can not double swerve.
Further, described mandrel has been arranged circumferentially the second groove along described mandrel, and the bottom surface of described second groove is lower arcuate surface, described lower arcuate surface departs from described mandrel.When the bottom surface of groove is arc, the slurry flows of down-hole is minimized through cloudy Buddhist nun herein, thus reduce mud to the erosion of bumper jar outside.
The technique effect that the utility model realizes:
The bumper jar that the utility model embodiment provides, be provided with shell body and mandrel, and between mandrel and shell body, supporting positive cover is set, by arranging the mode of supporting positive cover sealing ring between supporting positive cover and shell body, enable supporting positive cover sealing ring effectively isolated outside mud, outside mud is made not easily to flow to the inside of bumper jar, thus improve the sealing of the inside of bumper jar, the availability of the internal component of bumper jar is improved, improving existing bumper jar easily allows mud penetrate into inside by the gap between its each parts, cause the problem that inner body damages.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present utility model, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation of the bumper jar that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the enlarged diagram at A place in Fig. 1;
Fig. 3 is the enlarged diagram at B place in Fig. 1;
The structural representation of mud-scraping ring in the bumper jar that Fig. 4 provides for the utility model embodiment.
Reference numeral is as follows:
Shell body 101, lower contact 102, mandrel 103; Washing pipe 104;
Supporting positive cover 200, mud-scraping ring 201, supporting positive cover sealing ring 202, shell body sealing ring 203, core sleeve 204; Support member 205;
Jump ring 300, floating piston 301, back of the body cap 302, floating piston sealing ring 303, piston supporting positive cover 304;
Internal cavity 401, flow passage chamber 402.
Detailed description of the invention
Below in conjunction with accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.The assembly of the utility model embodiment describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiment of the present utility model provided in the accompanying drawings and the claimed scope of the present utility model of not intended to be limiting, but selected embodiment of the present utility model is only represented.Based on embodiment of the present utility model, the every other embodiment that those skilled in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.
In drillng operation, due to complicated geological (Plastic Flow and extruding as stratum in cave-in, bore hole), technical measures improper (as termination of pumping overlong time, bit balling etc.), drilling tool usually occurs to be hampered bit freezing, bumper jar is one of effective tool removing lock of tool drilling.In prior art, bumper jar discharges suddenly the energy storage of drill string by mechanical release, revolves the strong jarring added up or down, stuck point is loosened, thus reach the object of unfreezing to stuck point.But existing bumper jar, in application process, easily allows mud penetrate into inside by the gap between its each parts, causes inner body to damage.Based on this, the present inventor, through constantly research, proposes the bumper jar that the utility model embodiment provides.
Refer to Fig. 1-4, the bumper jar that the utility model embodiment provides, comprise shell body 101, described shell body 101 lower end is bolted with lower contact 102; Be provided with mandrel 103 in described shell body 101, the lower end of described mandrel 103 is bolted with washing pipe 104; Supporting positive cover 200 is socketed with between described shell body 101 and described mandrel 103; Supporting positive cover sealing ring 202 is socketed with between described supporting positive cover 200 and described mandrel 103.
When underground work, the outside of bumper jar has a lot of mud, and when the mandrel 103 of bumper jar works in jarring, can constantly axially move from top to bottom or from top to bottom, and when mandrel 103 moves from top to bottom, time namely from outside enclosure interior motion, the mud of mandrel 103 surface attachment can flow to bumper jar inside along with mandrel 103, and be attached to the surface of internal component, can cause damage to components and parts.
And in order to avoid above-mentioned situation, as the preferred mode of one, described supporting positive cover 200 has been arranged circumferentially the first groove near described mandrel 103 along described mandrel 103, be provided with mud-scraping ring 201, and mud-scraping ring 201 is sheathed on outside described mandrel 103 in described first groove.When at supporting positive cover 200 after mandrel 103 arranges mud-scraping ring 201, mud-scraping ring 201 can be socketed in outside mandrel 103, and mud-scraping ring 201 can be fitted with the external surface of mandrel 103 preferably near the one side of mandrel 103, when mandrel 103 axially moves from the top down, mud-scraping ring 201 can the mud of mandrel 103 external surface to extension, avoid mud to enter into bumper jar inside along with mandrel 103, damage is caused to internal component.
And mud-scraping ring 201 is after long-term use, surface has larger wearing and tearing, cause its can not well and mandrel 103 surface laminating, thus make the outside mud of bumper jar when mandrel 103 axially moves from top to bottom, along with mandrel 103 flow to bumper jar inside, the components and parts of bumper jar inside are caused damage.
And in order to avoid after mud-scraping ring 201 weares and teares in Long-Time Service process, effect reduces, and preferably, is provided with support member 205 between described mud-scraping ring 201 and described first bottom portion of groove.And arrange support member 205 between mud-scraping ring 201 and the first bottom portion of groove after, what it is such that mud-scraping ring 201 can be permanently effective fits with the external surface of mandrel 103, thus mud-scraping ring 201 is made effectively the mud of mandrel 103 surface attachment to be hung.And the concrete shape of support member 205 can be determined according to actual conditions very much, can be spherical, cylindrical etc., as long as enable support member 205 fit with mandrel 103 near the one side of mandrel 103.
When bumper jar is in underground work, some mud can be adhered in its surface, when mud is by the gap between supporting positive cover 200 and shell body 100, after entering into bumper jar inside, can be attached to the surface of internal component, can causes damage to components and parts.And in order to avoid this problem, in practice process, preferably, shell body sealing ring 203 is socketed with between described supporting positive cover 200 and described shell body 100, after shell body sealing ring 203 is set between supporting positive cover 200 and shell body 101, this shell body sealing ring 203 can effectively be stopped, and the mud on mandrel 103 surface enters into the inside of bumper jar, thus improves the components and parts availability of bumper jar inside.
When bumper jar works, mandrel 103 can do axial operation from top to bottom or from bottom to top, but, the movement locus of mandrel 103 is not absolute straight line, it is when bumper jar internal motion, meeting double swerve also causes extruding to the components and parts of bumper jar inside, thus reduces the application life of components and parts.In order to make the movement locus of mandrel 103 more close to straight line, preferably, core sleeve 204 is socketed again outside supporting positive cover 200, thus make core sleeve 204 can further righting mandrel 103, reducing the probability of mandrel 103 extruding internal component when moving, improve the components and parts availability of bumper jar inside.
When bumper jar works, mandrel can axially move for a long time up and down, because the gap, face that is sealed and matched is very little, the external surface of mandrel 103 can be made to wear into ellipticity, and then shadow is to sealing effectiveness; If infiltrate mud impurity in the gap between mandrel 103 and shell body 101, when mandrel 103 axially moves, also can pull the fitting face between mandrel 103 and shell body 101, so also can affect sealing effectiveness, also can cause mandrel 103 clamping stagnation time serious, not move.In order to improve the problems referred to above, preferably, be socketed with core sleeve 204 between supporting positive cover 200 and shell body 101, core sleeve 204 is that the material very low but very wear-resisting by hardness is made.When core sleeve 204 coordinates with mandrel 103; between core sleeve 204 and mandrel 103, gap is less than gap between mandrel 103 and shell body 101; first core sleeve 204 can be damaged during such wearing and tearing; but because core sleeve 204 itself has good abrasion resistance; so it well can protect the face that is sealed and matched between mandrel 103 and shell body 101; thus guarantee sealing effectiveness, also can ensure that mandrel motion is smooth and easy, not clamping stagnation.
In order to avoid the adherence of mud fluid in mandrel 103 through hole on components and parts, preferably, jump ring 300 is socketed with outside described washing pipe 104, back of the body cap 302 is provided with in the lower end of described washing pipe 104, described washing pipe 104 is also socketed with floating piston 301, and described floating piston 301 is between described jump ring 300 and described back of the body cap 302.After floating piston 301 is set, floating piston 301 is divided into internal cavity 401 and flow passage chamber 402 the cavity between mandrel 103 and shell body 101, internal cavity 401 is the part of floating piston more than 301, and flow passage chamber 402 is the part of floating piston less than 301, thus mud can only be flow to bumper jar from flow passage chamber 402, and the internal cavity 401 being provided with components and parts can not be flow to.
After mandrel 103 moves axially, internal cavity 401 volume is caused to change, because filling lubrication oil in internal cavity 401 chamber, so after volume change, pressure in internal cavity 401 chamber also can change, unidirectional force suffered by floating piston sealing ring 303 and shell body sealing ring 203 also can just be changed, so easy damage seal.And in order to ensure the pressure balance of internal cavity 401 and flow passage chamber 402, floating piston 301 can axially move, so just the pressure differential on both sides is made to become minimum, thus lift-off seal effect.Such as, when mandrel 103 does not move axially, the cavity pressure of internal cavity 401 and flow passage chamber 402 is 10MPa, and when mandrel 103 moves up, internal cavity 401 volume will diminish, and pressure can be increased to 13MPa, now end pressure 13MPa on floating piston, lower end pressure is 10MPa, seal is fragile, and now floating piston 301 goes down can automatically move down in the effect of pressure differential, until two-way pressure balance, when after pressure balance, seal is not fragile.
Further, floating piston sealing ring 303 is socketed with between described floating piston 301 and described shell body 101.Between floating piston 301 and shell body 101, have tiny gap, and mud can flow to by described gap the internal cavity 401 being provided with components and parts.And after be socketed floating piston sealing ring 303 between floating piston 301 and described shell body 101, floating piston sealing ring 303 effectively can completely cut off the moisture in mud, thus improve the availability of the components and parts of bumper jar inside.
Further, between described floating piston 301 and described shell body 101, be provided with piston supporting positive cover 304, to ensure the motion smoothness of floating piston 301.
It should be noted that, described mandrel 103 has been arranged circumferentially the second groove along described mandrel 103, and the bottom surface of described second groove is lower arcuate surface, described lower arcuate surface departs from described mandrel 103.When the bottom surface of the second groove is arc, make the slurry flows of down-hole minimum through cloudy Buddhist nun herein, thus reduce mud to the erosion of bumper jar outside.
The bumper jar that the utility model embodiment provides, be provided with shell body 101 and mandrel 103, and supporting positive cover 200 is set between mandrel 103 and shell body 101, by arranging the mode of supporting positive cover sealing ring 202 between supporting positive cover 200 and shell body 101, make supporting positive cover sealing ring 202 effectively can completely cut off outside mud, outside mud is made not easily to flow to the inside of bumper jar, thus improve the sealing of the inside of bumper jar, the availability of the internal component of bumper jar is improved, improving existing bumper jar easily allows mud penetrate into inside by the gap between its each parts, cause the problem that inner body damages.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. a bumper jar, is characterized in that, comprises shell body, and described shell body lower end is bolted with lower contact; Be provided with mandrel in described shell body, the lower end of described mandrel is bolted with washing pipe; Supporting positive cover is socketed with between described shell body and described mandrel; Supporting positive cover sealing ring is socketed with between described supporting positive cover and described mandrel.
2. bumper jar according to claim 1, is characterized in that, described supporting positive cover has been arranged circumferentially the first groove towards the one side of described mandrel along described mandrel, and be provided with mud-scraping ring in described first groove, described mud-scraping ring is sheathed on described mandrel.
3. bumper jar according to claim 2, is characterized in that, is provided with support member between described mud-scraping ring and described first bottom portion of groove.
4. bumper jar according to claim 1, is characterized in that, is socketed with shell body sealing ring between described supporting positive cover and described shell body.
5. bumper jar according to claim 1, is characterized in that, is socketed with core sleeve between described supporting positive cover and described shell body.
6. bumper jar according to claim 1, is characterized in that, is socketed with jump ring outside described washing pipe, and the lower end of described washing pipe is provided with back of the body cap, and described washing pipe is also socketed with floating piston, and described floating piston is between described jump ring and described back of the body cap.
7. bumper jar according to claim 6, is characterized in that, is socketed with floating piston sealing ring between described floating piston and described shell body.
8. bumper jar according to claim 6, is characterized in that, is provided with piston supporting positive cover between described floating piston and described shell body.
9. bumper jar according to claim 1, is characterized in that, described mandrel has been arranged circumferentially the second groove along described mandrel, and the bottom surface of described second groove is lower arcuate surface, and described lower arcuate surface departs from described mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420859406.0U CN204371180U (en) | 2014-12-30 | 2014-12-30 | Bumper jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420859406.0U CN204371180U (en) | 2014-12-30 | 2014-12-30 | Bumper jar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371180U true CN204371180U (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420859406.0U Active CN204371180U (en) | 2014-12-30 | 2014-12-30 | Bumper jar |
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| Country | Link |
|---|---|
| CN (1) | CN204371180U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863543B (en) * | 2016-05-11 | 2019-11-08 | 中国石油天然气集团公司 | Bumper jar |
-
2014
- 2014-12-30 CN CN201420859406.0U patent/CN204371180U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863543B (en) * | 2016-05-11 | 2019-11-08 | 中国石油天然气集团公司 | Bumper jar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190123 Address after: 618300 No. 13, West Zhuhai Road, Guanghan City, Deyang City, Sichuan Province Patentee after: Sichuan Weichuang Petroleum Equipment Manufacturing Co.,Ltd. Address before: 257097 Dongying District, Dongying City, Shandong Province Patentee before: Wang Yue |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230914 Address after: 618000 No. 13, Section 1, Zhuhai Road West, Guanghan City, Deyang City, Sichuan Province Patentee after: Sichuan Weichuang Petroleum Equipment Manufacturing Co.,Ltd. Patentee after: SHANDONG WEICHUANG PETROLEUM TECHNOLOGY Co.,Ltd. Address before: 618300 No. 13, West Section 1, Zhuhai Road, Guanghan City, Deyang City, Sichuan Province Patentee before: Sichuan Weichuang Petroleum Equipment Manufacturing Co.,Ltd. |
|
| TR01 | Transfer of patent right |