CN2844396Y - The slip shock absorber - Google Patents
The slip shock absorber Download PDFInfo
- Publication number
- CN2844396Y CN2844396Y CN 200520142993 CN200520142993U CN2844396Y CN 2844396 Y CN2844396 Y CN 2844396Y CN 200520142993 CN200520142993 CN 200520142993 CN 200520142993 U CN200520142993 U CN 200520142993U CN 2844396 Y CN2844396 Y CN 2844396Y
- Authority
- CN
- China
- Prior art keywords
- spline
- mandrel
- spline housing
- drilling
- drilling tool
- 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.)
- Expired - Fee Related
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Abstract
A kind of slip shock absorber, its top connection are located at the mandrel upper end, and both are structure as a whole; The outside, carrying cap bottom is connected with the spline housing upper end is inboard by screw thread, and the lower end of spline housing connects lower contact; Described mandrel penetrates in carrying cap and the spline housing axle center hole, be provided with sealing between the top of mandrel and spline housing, be provided with spline between mandrel on this below sealing and the spline housing, it is characterized in that: the coaxial connection one core pipe in the lower end of described mandrel is provided with the primary seal body between this outside, core pipe lower end and described lower contact inboard; Public key at described spline has certain longitudinal sliding motion scope in female key, this spline is among the oil lubrication.It adds and is connected on drilling tool point of neutralization position, and the drill bit bouncing of drilling tool is not delivered on the drilling rod, can effectively eliminate covibration, thereby the protection drilling tool preserves from, and promotes downhole safety, accelerates bit speed, shortens drilling period, reduces drilling cost.
Description
Technical field
The utility model relates to a kind of drilling tool damper, belongs to oil and gas well drilling engineering field.
Background technology
At the petroleum natural gas exploration wellbore construction, in the drilling process, the bouncing of drilling tool phenomenon often takes place, bouncing of drilling tool is caused by drill bit contact stratum, shaft bottom, especially cause drilling tool resonance, endanger very greatly that it breaks the drilling tool thorn, bit life is shortened, cause down-hole accident, lose huge.Though use conventional damper can produce the effect of certain reduction vibrations, the resonance of drilling rod is still difficult to be eliminated, and for example the disconnected thorn of drilling tools phenomenon can take place tens times certain gas field a bite well, seriously influences well construction period and construction costs, and puzzled wellbore construction decades.
Summary of the invention
The purpose of this utility model just provides a kind of slip shock absorber, stings phenomenon with what the solution prior art existed owing to vibrations cause drilling tool to break, and has a strong impact on the problem of well construction period and raising construction costs.
The technical solution of the utility model is: comprise top connection, mandrel, carrying cap, go up sealing, spline, spline housing and lower contact, top connection is located at the mandrel upper end, and both are structure as a whole; The outside, carrying cap bottom is connected with the spline housing upper end is inboard by screw thread, and the lower end of spline housing connects lower contact; Described mandrel penetrates in carrying cap and the spline housing axle center hole, be provided with sealing between the top of mandrel and spline housing, be provided with spline between mandrel on this below sealing and the spline housing, it is characterized in that: coaxial connection one core pipe in the lower end of described mandrel, between this outside, core pipe lower end and described lower contact inboard, be provided with the primary seal body, make carrying cap and primary seal body bear mandrel load jointly.Public key at described spline has certain longitudinal sliding motion scope in female key, this spline is among the oil lubrication.
The technical measures that the utility model is taked are to utilize a scalable instrument that is added in drilling tool point of neutralization position; make the bouncing of drilling tool of drilling tool bottom shake this instrument place and can not reach the top drilling tool, thereby thoroughly solve covibration, protected drilling tool; reduced drilling tool accident, the drill tool life of prolongation.Simultaneously, this instrument is because have an overcoat with the free gap between the mandrel, so, can realize that drilling process send once to bore, creep into certain drilling depth, send again once and bore, do not need continuous do not stop send brill, alleviated driller's labour intensity.
Description of drawings
Fig. 1 is an axial sectional structure schematic diagram of the present utility model.
Description of reference numerals: 1 top connection and mandrel; 2 carrying caps; Sealing on 3; 4 spline housings; The public key of 5 splines; The female key of 6 splines; 7 grease chambeies; 8 core pipes; 9 oiling joints; 10 primary seal bodies; 11 lower contacts; 12 oil filler points.
The specific embodiment
Referring to Fig. 1, structure of the present utility model and function are: install on top connection and mandrel 1 and seal 3, seal outside mud, and connect circulation with core pipe 8, insert then in spline housing (female key) cover 4 and the female key 6, load onto primary seal body 10, for anti-circulating fluid leaks in core pipe 8 ends.Refill lower contact 11, return and load onto carrying cap 2, in assembling, coat lubrication oil.Inject lubrication oil between the grease chamber 7 and spline 5 and 6 between core pipe 8 and the spline housing 4 from oil filler point 12 then.
The utility model adds in use and is connected on drilling tool point of neutralization position, can effectively make the drill bit bouncing of drilling tool not Be delivered on the drilling rod, can effectively eliminate covibration, thereby the protection drilling tool preserves from, and promotes the down-hole Safety is accelerated bit speed, shortens drilling period, reduces drilling cost.
Claims (1)
1. a slip shock absorber comprises top connection, mandrel, carrying cap, goes up sealing, spline, spline housing and lower contact, and top connection is located at the mandrel upper end, and both are structure as a whole; The outside, carrying cap bottom is connected with the spline housing upper end is inboard by screw thread, and the lower end of spline housing connects lower contact; Described mandrel penetrates in carrying cap and the spline housing axle center hole, be provided with sealing between the top of mandrel and spline housing, be provided with spline between mandrel on this below sealing and the spline housing, it is characterized in that: the coaxial connection one core pipe in the lower end of described mandrel is provided with the primary seal body between this outside, core pipe lower end and described lower contact inboard; Public key at described spline has certain longitudinal sliding motion scope in female key, this spline is among the oil lubrication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520142993 CN2844396Y (en) | 2005-12-12 | 2005-12-12 | The slip shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520142993 CN2844396Y (en) | 2005-12-12 | 2005-12-12 | The slip shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2844396Y true CN2844396Y (en) | 2006-12-06 |
Family
ID=37486348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520142993 Expired - Fee Related CN2844396Y (en) | 2005-12-12 | 2005-12-12 | The slip shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2844396Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720073A (en) * | 2019-03-22 | 2020-09-29 | 中国石油化工股份有限公司 | Vibration isolation tool for well drilling |
| CN113027327A (en) * | 2021-04-08 | 2021-06-25 | 河南易发石油工程技术有限公司 | Two-way shock attenuation drilling tool pressurization instrument is used in well drilling |
-
2005
- 2005-12-12 CN CN 200520142993 patent/CN2844396Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720073A (en) * | 2019-03-22 | 2020-09-29 | 中国石油化工股份有限公司 | Vibration isolation tool for well drilling |
| CN113027327A (en) * | 2021-04-08 | 2021-06-25 | 河南易发石油工程技术有限公司 | Two-way shock attenuation drilling tool pressurization instrument is used in well drilling |
| CN113027327B (en) * | 2021-04-08 | 2023-08-22 | 河南易发石油工程技术有限公司 | Drilling is with two-way shock attenuation drilling tool pressurization instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061206 Termination date: 20131212 |