CN103061685B - 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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- CN103061685B CN103061685B CN201310012551.5A CN201310012551A CN103061685B CN 103061685 B CN103061685 B CN 103061685B CN 201310012551 A CN201310012551 A CN 201310012551A CN 103061685 B CN103061685 B CN 103061685B
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- screw thread
- shaft bottom
- mandrel
- thread pair
- boring means
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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 geology field, particularly to a kind of shaft bottom boring means and its slip-off preventing self-locking structure.
Background technology
Shaft bottom boring means (such as downhole motor etc.) can have that inner body structure comes off, particularly internal
Part whole shaft bottom boring means service life near when just especially can easily come off.In addition, in deep-well, complexity
In the case of well, the internals of shaft bottom boring means and shell will bear bigger stretch-proof, the aspect such as anti-extrusion, antitorque
Intensity, this also makes common downhole tool face the danger coming off.
Shaft bottom boring means has part to come off means accident, not only delays progress before, also will pay high simultaneously
Expensive salvage expenses, such as salvages and does not become well also to be buried, the loss so bringing is no gageable.
Content of the invention
The invention provides a kind of structure is simple, low cost, can the shaft bottom boring means of self-locking and its slip-off preventing self-locking
Structure.
For solving the above problems, as the first aspect of the invention, there is provided a kind of slip-off preventing of shaft bottom boring means
Self-locking structure, the mandrel of shaft bottom boring means passes through bearing and bearing block is pivotly connected with the shell of shaft bottom boring means
Connect, bearing block is connected by the first screw thread pair with shell；The lower end of the mandrel of shaft bottom boring means and the drive of shaft bottom boring means
The upper end of moving axis cylinder is passed through the second screw thread pair and is connected；The lower end driving beam barrel is connected by the 3rd screw thread pair with drill bit.
Further, oppositely oriented, the rotation of the second screw thread pair and the 3rd screw thread pair of the first screw thread pair and the second screw thread pair
To contrary.
Further, bearing block includes mutually discrete Part I and Part II, Part I and Part II
Screw thread is provided with outer surface, wherein, bearing is arranged in Part I, one end of Part II is provided with operation and installs
Portion.
Further, operation installation portion is polygonal convex.
Further, polygon is hexagon.
As the second aspect of the invention, there is provided a kind of shaft bottom boring means, including mandrel, drive beam barrel and brill
Head, is connected using above-mentioned slip-off preventing self-locking structure between mandrel, driving beam barrel and drill bit.
Further, shaft bottom boring means is downhole motor.
During work, between bearing block and shell, mandrel and drive between beam barrel and drive the spiral shell between beam barrel and drill bit
Stricture of vagina connects the rotation with mandrel, more stubborn tighter, thus serving the effect of self-locking, can effectively prevent sending out of case accident
Raw.Additionally, the present invention also has the characteristics that structure is simple, low cost.
Brief description
Fig. 1 schematically shows the structural representation of the present invention.
In figure reference：10th, mandrel；20th, bearing block；30th, shell；40th, the first screw thread pair；50th, drive beam barrel；60、
Second screw thread pair；70th, bearing.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can be defined by the claims
Implement with the multitude of different ways covering.
As a first aspect of the present invention, there is provided a kind of slip-off preventing self-locking structure of shaft bottom boring means.As Fig. 1
Shown, in this slip-off preventing self-locking structure：The mandrel 10 of shaft bottom boring means is passed through bearing 70 and bearing block 20 and is bored with shaft bottom
The shell 30 entering instrument is pivotably connected, and bearing block 20 is connected by the first screw thread pair 40 with shell 30；Shaft bottom boring means
The upper end of the driving beam barrel 50 of the lower end of mandrel 10 and shaft bottom boring means be connected by the second screw thread pair 60；Drive beam barrel 50
Lower end be connected by the 3rd screw thread pair with drill bit.
During work, between bearing block 20 and shell 30, mandrel 10 and drive between beam barrel 50 and drive beam barrel 50 and bore
The threaded rotation with mandrel 10 between head, more stubborn tighter, thus serving the effect of self-locking, can effectively anti-anti-avulsion
The generation of the accident that falls.Additionally, the present invention also has the characteristics that structure is simple, low cost.
Preferably, the first screw thread pair 40 and the second screw thread pair 60 is oppositely oriented, the second screw thread pair 60 and the 3rd screw thread pair
Oppositely oriented.
Preferably, the outside of bearing block 20 is provided with external screw thread, and the inwall of shell 30 is provided with female thread, the two cooperation
Form the first screw thread pair.
Preferably, the bottom of mandrel 10 is provided with external screw thread, drives the upper end of beam barrel 50 to be provided with female thread, the two is joined
Close and form the second screw thread pair.
Preferably, drive the lower end of beam barrel 50 to be provided with female thread, drill bit is provided with external screw thread, the two cooperatively forms the
Three screw thread pairs.Preferably, the female thread driving the lower end of beam barrel 50 is taper.
Preferably, bearing block 20 includes mutually discrete Part I and Part II, Part I and Part II
Screw thread is provided with outer surface, wherein, bearing 70 is arranged in Part I, one end of Part II is provided with operation and installs
Portion.Preferably, operation installation portion is polygonal convex.Preferably, polygon is hexagon.
As a second aspect of the present invention, there is provided a kind of shaft bottom boring means, including mandrel 10, drive beam barrel 50 and brill
Head, is connected using above-mentioned slip-off preventing self-locking structure between mandrel 10, driving beam barrel 50 and drill bit.Preferably, shaft bottom drilling
Instrument is downhole motor.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (6)
1. a kind of shaft bottom boring means slip-off preventing self-locking structure it is characterised in that
The mandrel (10) of described shaft bottom boring means passes through the outer of bearing (70) and bearing block (20) and described shaft bottom boring means
Shell (30) is pivotably connected, and described bearing block (20) is connected by the first screw thread pair (40) with described shell (30)；
The lower end of mandrel (10) of described shaft bottom boring means is led to the upper end of the driving beam barrel (50) of described shaft bottom boring means
Cross the second screw thread pair (60) to connect；
The described lower end driving beam barrel (50) is connected by the 3rd screw thread pair with drill bit；
Described first screw thread pair (40) is oppositely oriented with described second screw thread pair (60), described second screw thread pair (60) with described
3rd screw thread pair oppositely oriented.
2. slip-off preventing self-locking structure according to claim 1 is it is characterised in that described bearing block (20) includes mutually dividing
Vertical Part I and Part II, the outer surface of described Part I and described Part II is provided with screw thread, wherein,
Described bearing (70) is arranged in described Part I, and one end of described Part II is provided with operation installation portion.
3. slip-off preventing self-locking structure according to claim 2 is it is characterised in that described operation installation portion is polygonal
Convex.
4. slip-off preventing self-locking structure according to claim 3 is it is characterised in that described polygon is hexagon.
5. a kind of shaft bottom boring means, including mandrel (10), drives beam barrel (50) and drill bit it is characterised in that described mandrel
(10), using the slip-off preventing self-locking any one of Claims 1-4 between described driving beam barrel (50) and described drill bit
Structure connects.
6. shaft bottom according to claim 5 boring means is it is characterised in that described shaft bottom boring means is that shaft bottom is started
Machine.
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 CN103061685A (en) | 2013-04-24 |
| CN103061685B true CN103061685B (en) | 2017-02-08 |
Family
ID=48104544
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103061685B (en) |
Families Citing this family (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 |
| EP3473798B1 (en) * | 2017-10-20 | 2020-03-11 | Vallourec Oil And Gas France | Threaded connection partially in a self-locking engagement |
Citations (3)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT508991B1 (en) * | 2009-11-06 | 2012-09-15 | Dywidag Systems Int Gmbh | METHOD OF DRILLING, IN PARTICULAR PUNCHING OR TURNING OF HOLES IN GROUND OR ROCK MATERIAL AND DEVICE HIEFÜR |
-
2013
- 2013-01-08 CN CN201310012551.5A patent/CN103061685B/en active Active
Patent Citations (3)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103061685A (en) | 2013-04-24 |
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