CN103061685A - Downhole drilling tool and anti-loosening self-locking structure thereof - Google Patents
Downhole drilling tool and anti-loosening self-locking structure thereof Download PDFInfo
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- CN103061685A CN103061685A CN2013100125515A CN201310012551A CN103061685A CN 103061685 A CN103061685 A CN 103061685A CN 2013100125515 A CN2013100125515 A CN 2013100125515A CN 201310012551 A CN201310012551 A CN 201310012551A CN 103061685 A CN103061685 A CN 103061685A
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- screw thread
- shaft bottom
- mandrel
- locking structure
- thread pair
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Abstract
The invention provides a downhole drilling tool and an anti-loosening self-locking structure thereof. The anti-loosening self-locking structure of the downhole drilling tool comprises a mandrel of a downhole drilling tool, the mandrel is connected with a casing of the downhole drilling tool in a pivotable manner via a bearing and a bearing seat, the bearing seat is connected with the casing via a first screw thread pair, the lower end of the mandrel is connected with the upper end of a driving shaft barrel of the downhole drilling tool via a second screw thread pair, and the lower end of the driving shaft barrel is connected with a drill via a third screw thread pair. During working, the threaded connections between the bearing seat and the casing, between the mandrel and the driving shaft barrel and between the driving shaft barrel and the drill become tighter and tighter by screwing along with rotation of the mandrel, so that self-locking function is realized, and loosening accidents can be effectively avoided. In addition, the downhole drilling tool and the anti-loosening self-locking structure thereof are simple in structure and low in cost.
Description
Technical field
The present invention relates to the geology field, particularly a kind of shaft bottom boring means and slip-off preventing self-locking structure thereof.
Background technology
The problem, particularly inner part that shaft bottom boring means (such as the shaft bottom motor etc.) can exist the inner body structure to come off application life of whole shaft bottom boring means near in just can easily come off especially.In addition, in the situation that deep-well, Holes of Complicated Wells, the internals of shaft bottom boring means and shell will bear the intensity of larger stretch-proof, the aspect such as anti-extrusion, antitorque, and this is also so that common downhole tool is facing the danger that comes off.
The shaft bottom boring means has part to come off to mean accident, not only will before progress delay, also to pay simultaneously expensive salvage expenses, do not become also will bury well as salvaging, the loss that brings like this is without gageable.
Summary of the invention
But the invention provides a kind of shaft bottom boring means and slip-off preventing self-locking structure thereof of simple in structure, the low self-locking of cost.
For addressing the above problem, as first aspect of the present invention, the slip-off preventing self-locking structure of a kind of shaft bottom boring means is provided, and the mandrel of shaft bottom boring means is connected with the shell of shaft bottom boring means pivotly by bearing and bearing support, and bearing support is connected by the first screw thread pair with shell; The lower end of the mandrel of shaft bottom boring means is connected by the second screw thread pair with the upper end of the driving beam barrel of shaft bottom boring means; The lower end that drives beam barrel is connected by the 3rd screw thread pair with drill bit.
Further, the first screw thread pair is opposite with the rotation direction of the second screw thread pair, and the second screw thread pair is opposite with the rotation direction of the 3rd screw thread pair.
Further, bearing support comprises mutually discrete first and second portion, is provided with screw thread on the external surface of first and second portion, and wherein, bearing is installed in the first, and an end of second portion is provided with the operation installation portion.
Further, the operation installation portion is polygonal convex.
Further, polygon is hexagon.
As second aspect of the present invention, a kind of shaft bottom boring means is provided, comprise mandrel, drive beam barrel and drill bit, adopt above-mentioned slip-off preventing self-locking structure to connect between mandrel, driving beam barrel and the drill bit.
Further, the shaft bottom boring means is the shaft bottom motor.
During work, more stubborn tighter between bearing support and the shell, between mandrel and the driving beam barrel and drive being threaded along with the rotation of mandrel between beam barrel and the drill bit, thus played the effect of self-locking, can effectively prevent the generation of case accident.In addition, the present invention also has characteristics simple in structure, that cost is low.
Description of drawings
Fig. 1 schematically shows structural representation of the present invention.
Reference numeral among the figure: 10, mandrel; 20, bearing support; 30, shell; 40, the first screw thread pair; 50, drive beam barrel; 60, the second screw thread pair; 70, bearing.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As a first aspect of the present invention, provide the slip-off preventing self-locking structure of a kind of shaft bottom boring means.Shown in Fig. 1, in this slip-off preventing self-locking structure: the mandrel 10 of shaft bottom boring means is connected with the shell 30 of shaft bottom boring means pivotly by bearing 70 and bearing support 20, and bearing support 20 is connected by the first screw thread pair 40 with shell 30; The lower end of the mandrel 10 of shaft bottom boring means is connected by the second screw thread pair 60 with the upper end of the driving beam barrel 50 of shaft bottom boring means; The lower end that drives beam barrel 50 is connected by the 3rd screw thread pair with drill bit.
During work, between bearing support 20 and the shell 30, mandrel 10 with drive between the beam barrel 50 and drive being threaded along with the rotation of mandrel 10 between beam barrel 50 and the drill bit, more stubborn tighter, thus played the effect of self-locking, can effectively prevent the generation of case accident.In addition, the present invention also has characteristics simple in structure, that cost is low.
Preferably, the first screw thread pair 40 is opposite with the rotation direction of the second screw thread pair 60, and the second screw thread pair 60 is opposite with the rotation direction of the 3rd screw thread pair.
Preferably, the outer setting of bearing support 20 has external screw thread, is provided with internal thread on the inwall of shell 30, and the two cooperates formation the first screw thread pair.
Preferably, the bottom of mandrel 10 is provided with external screw thread, and the upper end that drives beam barrel 50 is provided with internal thread, and the two cooperates formation the second screw thread pair.
Preferably, the lower end that drives beam barrel 50 is provided with internal thread, is provided with external screw thread on the drill bit, and the two cooperates formation the 3rd screw thread pair.Preferably, the internal thread of the lower end of driving beam barrel 50 is tapers.
Preferably, bearing support 20 comprises mutually discrete first and second portion, is provided with screw thread on the external surface of first and second portion, and wherein, bearing 70 is installed in the first, and an end of second portion is provided with the operation installation portion.Preferably, the operation installation portion is polygonal convex.Preferably, polygon is hexagon.
As a second aspect of the present invention, a kind of shaft bottom boring means is provided, comprise mandrel 10, drive beam barrel 50 and drill bit, adopt above-mentioned slip-off preventing self-locking structure to connect between mandrel 10, driving beam barrel 50 and the drill bit.Preferably, the shaft bottom boring means is the shaft bottom motor.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the slip-off preventing self-locking structure of a shaft bottom boring means is characterized in that,
The mandrel (10) of described shaft bottom boring means is connected with the shell (30) of described shaft bottom boring means pivotly by bearing (70) and bearing support (20), and described bearing support (20) is connected by the first screw thread pair (40) with described shell (30);
The lower end of the mandrel (10) of described shaft bottom boring means is connected by the second screw thread pair (60) with the upper end of the driving beam barrel (50) of described shaft bottom boring means;
The lower end of described driving beam barrel (50) is connected by the 3rd screw thread pair with drill bit.
2. slip-off preventing self-locking structure according to claim 1 is characterized in that, described the first screw thread pair (40) is opposite with the rotation direction of described the second screw thread pair (60), and described the second screw thread pair (60) is opposite with the rotation direction of described the 3rd screw thread pair.
3. slip-off preventing self-locking structure according to claim 1, it is characterized in that, described bearing support (20) comprises mutually discrete first and second portion, be provided with screw thread on the external surface of described first and described second portion, wherein, described bearing (70) is installed in the described first, and an end of described second portion is provided with the operation installation portion.
4. slip-off preventing self-locking structure according to claim 3 is characterized in that, described operation installation portion is polygonal convex.
5. slip-off preventing self-locking structure according to claim 4 is characterized in that, described polygon is hexagon.
6. shaft bottom boring means, comprise mandrel (10), drive beam barrel (50) and drill bit, it is characterized in that, adopt each described slip-off preventing self-locking structure connection in the claim 1 to 5 between described mandrel (10), described driving beam barrel (50) and the described drill bit.
7. shaft bottom according to claim 6 boring means is characterized in that, described shaft bottom boring means is the shaft bottom motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310012551.5A CN103061685B (en) | 2013-01-08 | 2013-01-08 | Downhole drilling tool and anti-loosening self-locking structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310012551.5A CN103061685B (en) | 2013-01-08 | 2013-01-08 | Downhole drilling tool and anti-loosening self-locking structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103061685A true CN103061685A (en) | 2013-04-24 |
| CN103061685B CN103061685B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310012551.5A Active CN103061685B (en) | 2013-01-08 | 2013-01-08 | Downhole drilling tool and anti-loosening self-locking structure thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869847A (en) * | 2015-12-11 | 2017-06-20 | 贵州高峰石油机械股份有限公司 | A kind of underground right-hand thread drilling tool Refloatation method and the back-off joint for being used |
| CN111566309A (en) * | 2017-10-20 | 2020-08-21 | 瓦卢瑞克石油天然气法国有限公司 | Threaded connection partially in self-locking engagement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5165492A (en) * | 1990-10-26 | 1992-11-24 | Dailey Petroleum Service Corp. | Apparatus for preventing separation of a down-hole motor from a drill string |
| CN101305156A (en) * | 2005-11-11 | 2008-11-12 | Tracto技术有限公司 | Thread securer |
| US20120247835A1 (en) * | 2009-11-06 | 2012-10-04 | Boehm Karl | Method for the drilling, in particular percussion or rotary percussion drilling, of holes in soil or rock material and device therefor |
| CN203035114U (en) * | 2013-01-08 | 2013-07-03 | 深圳市阿特拉能源技术有限公司 | Shaft bottom drilling tool and anti-dropping self-locking structure thereof |
-
2013
- 2013-01-08 CN CN201310012551.5A patent/CN103061685B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5165492A (en) * | 1990-10-26 | 1992-11-24 | Dailey Petroleum Service Corp. | Apparatus for preventing separation of a down-hole motor from a drill string |
| CN101305156A (en) * | 2005-11-11 | 2008-11-12 | Tracto技术有限公司 | Thread securer |
| US20120247835A1 (en) * | 2009-11-06 | 2012-10-04 | Boehm Karl | Method for the drilling, in particular percussion or rotary percussion drilling, of holes in soil or rock material and device therefor |
| CN203035114U (en) * | 2013-01-08 | 2013-07-03 | 深圳市阿特拉能源技术有限公司 | Shaft bottom drilling tool and anti-dropping self-locking structure thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869847A (en) * | 2015-12-11 | 2017-06-20 | 贵州高峰石油机械股份有限公司 | A kind of underground right-hand thread drilling tool Refloatation method and the back-off joint for being used |
| CN111566309A (en) * | 2017-10-20 | 2020-08-21 | 瓦卢瑞克石油天然气法国有限公司 | Threaded connection partially in self-locking engagement |
| CN111566309B (en) * | 2017-10-20 | 2022-05-24 | 瓦卢瑞克石油天然气法国有限公司 | Threaded connection partially in self-locking engagement |
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| Publication number | Publication date |
|---|---|
| CN103061685B (en) | 2017-02-08 |
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