CN206280001U - A kind of low side perseverance anti-oblique drilling tool of jet - Google Patents
A kind of low side perseverance anti-oblique drilling tool of jet Download PDFInfo
- Publication number
- CN206280001U CN206280001U CN201621303188.8U CN201621303188U CN206280001U CN 206280001 U CN206280001 U CN 206280001U CN 201621303188 U CN201621303188 U CN 201621303188U CN 206280001 U CN206280001 U CN 206280001U
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- China
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- rotor
- drill bit
- jet
- drilling tool
- top connection
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Abstract
The utility model is related to a kind of low side perseverance anti-oblique drilling tool of jet, including top connection (1) and drill bit (2), the top connection (1) is fixedly connected with drill bit (2), multiple hydrophthalmia passages (201) are provided with inside the drill bit (2), rotor (3) is provided with the inner chamber of the top connection (1), the rotor (3) is by bearing (5) in top connection (1), the rotor (3) is provided with eccentric hammer (301), the lower end of the rotor (3) is provided with semicircle baffle plate (302), there is the phase angle difference of 180 degree between the semicircle baffle plate (302) and eccentric hammer (301), the semicircle baffle plate (302) blocks part hydrophthalmia passage (201).The utility model can realize creep into way in be automatically adjusted to having beaten oblique track, well straightening, it is ensured that straight well section in hole deviation meet the requirements.
Description
Technical field
The utility model is related to drilling tool, more specifically to a kind of low side perseverance anti-oblique drilling tool of jet.
Background technology
Current all kinds of wellbore constructions one open anti-oblique technology and mainly use packed hole assembly, tower drilling tool, pendulum assembly, off-axis group
Close anti-oblique technology and the anti-oblique technology of combined drilling.
Packed hole assembly is by several external diameters centralizer close with bit diameter and the larger brill of certain length external diameter
Quickly constituted.Anti-oblique principle is to install a number of centralizer in lower drilling string more than drill bit, with righting drill collar；Improve
The rigidity of lower drilling string, reduces its degree of crook, to eliminate the knockdown of drill bit, can reduce and limit because drill string is curved
The bent and increasing hole angle power that produces, while centralizer is supported on the borehole wall, formation natural deflecting power of contending with, to reach control hole deviation most
A small range change purpose, but this kind combination in practical application because centralizer and drill collar size are larger, between the borehole wall between
Gap is smaller, and bit freezing risk is larger, so construction safety is difficult to ensure that.
Tower BHA is on drill bit, to be gradually reduced from bottom to top using several sections of diameters, for example tower-like drill collar of shape
Combination.The characteristics of such drilling tool is that bottom drill collar weight is big, and rigidity is big, and whole drill collar stem (DCS) center of gravity is low, good stability.Can produce compared with
Big pendulum subtracts oblique force.Additionally, tower drilling tool also has simple structure, it is easy to use, it is not necessary to carry out the calculating of centralizer position
Advantage, also in the absence of centralizer, the abrasion of square drill collar and the problems such as repair, but tower drilling tool small, the Yi Ka that there is also bottom gap
Bore, drill collar size is more, the deficiency such as inconvenient operation.
Pendulum assembly is a kind of BHA for reducing hole deviation, is the transverse direction point using the following drill collar weight in point of contact in inclined shaft
Drill bit is pushed to the low side of the borehole wall by power, and the effect of hole deviation is gradually reduced to reach.This transverse component as pendulum, so
Referred to as " pendulum force ", but have can only well straightening for tower drilling tool and pendulum assembly, it is impossible to anti-oblique shortcoming.
The principle that off-axis combines anti-oblique technology is that, in wammel pressure, eccentric shaft connection plays a role, causes at eccentric shaft connection
Moment of flexure is produced, drilling tool is produced flexural deformation, driven by rotary disc BHA produces revolution, due to gyroscopic effect and drill bit chip well
Wall, enhances drop angle function, and drill pipe deformationses make to be moved on point of contact, increased drop angle power, but this kind of device is tied due to itself
The problem of structure, has been rarely employed at present.
The anti-oblique technology of combined drilling relies on the compound motion of rotating disk and mud motor, with prebuckling underground power drilling
Tool, increases the guidance capability control to drill bit, is analyzed by compound motion lower drill principle of dynamics, drill bit is produced side force
Overcome formation deflecting force, so as to promote drill bit to be moved along the direction of planned course, realize in straight well rail in deviation prevention and fast and inclined shaft
Mark is controlled, but this kind of anti-oblique technology will be by complex dynamics calculation, and scene application is subject to certain limitation.
The defect of several anti-oblique technologies for more than, in recent years You Fu companies of foreign countries have developed vertical drilling skill on a large scale
Art, domestic Ye You relevant units introduce the such technology of research and development and have carried out production domesticization research, but these technologies are due to usage charges
With high, and downhole tool complex structure, it is complicated to easily cause underground failure, so not commonly used.
Utility model content
The technical problems to be solved in the utility model is, there is provided a kind of low side perseverance anti-oblique drilling tool of jet, Ke Yishi
Present drilling is automatically adjusted on the way to having beaten oblique track, well straightening, it is ensured that the hole deviation in straight well section meets the requirements.
The utility model solves the technical scheme that its technical problem used：Construct a kind of low side perseverance anti-deviated borehole of jet
Instrument, including top connection and drill bit, the top connection are fixedly connected with drill bit, and the drill bit internal is provided with multiple hydrophthalmia passages,
Rotor is provided with the inner chamber of the top connection, the rotor is arranged in top connection by bearing, and the rotor is provided with bias
Weight, the lower end of the rotor is provided with semicircle baffle plate, there is the phase angle difference of 180 degree between the semicircle baffle plate and eccentric hammer,
The semicircle baffle plate blocks part hydrophthalmia passage.
In such scheme, the internal chamber wall of the top connection is provided with the support of bearing, and the bearing is arranged on the support of bearing,
The rotor is mounted on bearings.
In such scheme, the multiple hydrophthalmia passage is uniformly distributed circumferentially.
In such scheme, the eccentric hammer is integrally formed with rotor.
In such scheme, the semicircle baffle plate is connected by connecting bolt with rotor bottom.
In such scheme, the drill bit is PDC drill bit.
Implement the low side perseverance anti-oblique drilling tool of jet of the present utility model, have the advantages that：
The utility model requires wellbore quality and operation relatively low, it is possible to achieve automatic well straightening, drop angle, when normal brill
When entering hole deviation occur, the eccentric hammer in the device automatically goes to the low side of device due to affected by gravity, same with this
When, semicircle baffle plate is because of the phase angle difference for having 180 degree with eccentric hammer, so semicircle baffle plate automatically goes to the flash of device, so that
Three hydrophthalmia passages of PDC drill bit are blocked, the other three hydrophthalmia passage that drilling fluid can only be blocked never flows through, and these three water
Eye passage is consistent with the phase angle of eccentric hammer, is held at the low side of device, makees in the water-jet broken rock of PDC drill bit nozzle
Under, drilling trace is set to extend to vertical direction, so as to realize the function of well straightening and drop angle.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 is the structural representation of the low side perseverance anti-oblique drilling tool of jet；
Fig. 2 is the internal structure schematic diagram of the low side perseverance anti-oblique drilling tool of jet；
Fig. 3 is cross-sectional view of the low side perseverance anti-oblique drilling tool of jet at baffle plate.
Specific embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and effect, accompanying drawing is now compareed detailed
Illustrate specific embodiment of the present utility model.
As shown in Figure 1-Figure 3, the low side perseverance anti-oblique drilling tool of jet of the utility model, including top connection 1, drill bit 2, rotor
3rd, bearing 5, the support of bearing 4, eccentric hammer 301 and semicircle baffle plate 302.
Top connection 1 is fixedly connected with drill bit 2, and drill bit 2 is rotated with top connection 1, the upper end of top connection 1 connection conventional drilling pipe
.Drill bit 2 is PDC drill bit 2, and multiple hydrophthalmia passages 201, circumferentially uniform point of multiple hydrophthalmia passages 201 are provided with inside drill bit 2
Cloth, the hydrophthalmia passage 201 in the present embodiment has 6.Rotor 3 is provided with the inner chamber of top connection 1, rotor 3 is arranged on by bearing 5
In top connection 1, the internal chamber wall of top connection 1 is provided with the support of bearing 4, and bearing 5 is arranged on the support of bearing 4, and rotor 3 is arranged on axle
Hold on 5.
Rotor 3 is provided with eccentric hammer 301, and the lower end of rotor 3 is provided with semicircle baffle plate 302, semicircle baffle plate 302 and eccentric weight
There is the phase angle difference of 180 degree between hammer 301.Semicircle baffle plate 302 blocks part hydrophthalmia passage 201.Eccentric hammer 301 and rotor 3
It is integrally formed, semicircle baffle plate 302 is connected by connecting bolt with the bottom of rotor 3.
When hole deviation occurs in normal drilling, eccentric hammer 301 automatically goes to the low of device due to affected by gravity
Side, at the same time, semicircle baffle plate 302 is because of the phase angle difference for having 180 degree with eccentric hammer 301, so semicircle baffle plate 302 turns automatically
To the flash of device, so as to block three hydrophthalmia passages 201 of PDC drill bit 2, the other three water that drilling fluid can only be blocked never
Eye passage 201 flows through, and these three hydrophthalmia passages 201 are consistent with the phase angle of eccentric hammer 301, are held at the low of device
Side, the nozzle of PDC drill bit 2 water-jet broken rock effect under, make drilling trace to vertical direction extend, so as to realize well straightening and
The function of drop angle.
Embodiment of the present utility model is described above in conjunction with accompanying drawing, but the utility model is not limited to
The specific embodiment stated, above-mentioned specific embodiment is only schematical, rather than restricted, this area it is common
Technical staff is not departing from the utility model objective and scope of the claimed protection situation under enlightenment of the present utility model
Under, many forms can be also made, these are belonged within protection of the present utility model.
Claims (6)
1. a kind of low side perseverance anti-oblique drilling tool of jet, including top connection (1) and drill bit (2), the top connection (1) and drill bit
(2) be fixedly connected, it is characterised in that be provided with multiple hydrophthalmia passages (201) inside the drill bit (2), the top connection (1) it is interior
Rotor (3) is provided with chamber, by bearing (5) in top connection (1), the rotor (3) is provided with bias to the rotor (3)
Weight (301), the lower end of the rotor (3) is provided with semicircle baffle plate (302), the semicircle baffle plate (302) and eccentric hammer (301)
Between have the phase angle difference of 180 degree, the semicircle baffle plate (302) blocks part hydrophthalmia passage (201).
2. the perseverance anti-oblique drilling tool of jet in low side according to claim 1, it is characterised in that the top connection (1) it is interior
Cavity wall is provided with the support of bearing (4), and on the support of bearing (4), the rotor (3) is installed in bearing (5) for the bearing (5)
On.
3. the perseverance anti-oblique drilling tool of jet in low side according to claim 1, it is characterised in that the multiple hydrophthalmia passage
(201) it is uniformly distributed circumferentially.
4. the perseverance anti-oblique drilling tool of jet in low side according to claim 1, it is characterised in that the eccentric hammer (301)
It is integrally formed with rotor (3).
5. the perseverance anti-oblique drilling tool of jet in low side according to claim 1, it is characterised in that the semicircle baffle plate (302)
It is connected with rotor (3) bottom by connecting bolt.
6. the anti-oblique drilling tool of permanent jet of low side according to claim 1-5 any one, it is characterised in that the drill bit
(2) it is PDC drill bit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621303188.8U CN206280001U (en) | 2016-11-30 | 2016-11-30 | A kind of low side perseverance anti-oblique drilling tool of jet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621303188.8U CN206280001U (en) | 2016-11-30 | 2016-11-30 | A kind of low side perseverance anti-oblique drilling tool of jet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206280001U true CN206280001U (en) | 2017-06-27 |
Family
ID=59075927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621303188.8U Withdrawn - After Issue CN206280001U (en) | 2016-11-30 | 2016-11-30 | A kind of low side perseverance anti-oblique drilling tool of jet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206280001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437517A (en) * | 2016-11-30 | 2017-02-22 | 中石化石油工程技术服务有限公司 | Low-edge constant jet anti-inclination drilling tool |
-
2016
- 2016-11-30 CN CN201621303188.8U patent/CN206280001U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437517A (en) * | 2016-11-30 | 2017-02-22 | 中石化石油工程技术服务有限公司 | Low-edge constant jet anti-inclination drilling tool |
| CN106437517B (en) * | 2016-11-30 | 2020-10-09 | 中石化石油工程技术服务有限公司 | Low-edge constant jet anti-inclination drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170627 Effective date of abandoning: 20201009 |