CN205370445U - In pit along with boring little reaming well drilling instrument - Google Patents
In pit along with boring little reaming well drilling instrument Download PDFInfo
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- CN205370445U CN205370445U CN201620117206.7U CN201620117206U CN205370445U CN 205370445 U CN205370445 U CN 205370445U CN 201620117206 U CN201620117206 U CN 201620117206U CN 205370445 U CN205370445 U CN 205370445U
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Abstract
The utility model discloses an in pit along with boring little reaming well drilling instrument, including the body this internal hydrophthalmia that is equipped with the upper end of body is equipped with the box of being connected with the upper portion drilling string the lower tip of body is equipped with the pin thread of being connected with the lower part drilling string it rights the wing to be equipped with off -centre on the body. The utility model discloses a monolithic structure, simple structure, processing is convenient, adopting off -centre to right the wing, and making its width suitably narrow down, the runner increase makes the solids -carrying capacity reinforcing of rightting wing department, the difficult mud drum that forms, adoption braze on the wing is right to off -centre PDC tooth and wear -resisting post, the PDC tooth can effectively be protected than PDC tooth depth 0.5 -1mm to wear -resisting post. The utility model discloses not only can enlarge the hole diameter, can solve the difficult scheduling problem of detritus bed sticking of tool problem, well necking down sticking of tool problem and soft formation or caving ground case moreover, the commonality is strong, and adaptability is wide.
Description
Technical field
This utility model relates to oil and gas well drilling field, particularly a kind of micro-expanding drilling tool of downhole drill.
Background technology
The counter-boring techniques of oil/gas drilling industry started from for 20 beginnings of the century, that applies this technology is intended that solution well necking down substantially, the drilling well difficult problems such as cave-in, practice have shown that, counter-boring techniques is effective ground method, nearly 20-30, along with oil/gas drilling is towards deep-well, ultradeep well, high-pressure oil-gas well, horizontal well, the transfer in the field such as extended reach well and ocean deepwater drilling, drilling engineering wanted faced by complicated state get more and more, counter-boring techniques is as the important means development processing drilling well unusual condition, it is increasingly becoming one and copes with plastic formation, optimize casing program, improve cementing quality, reduce the advanced technology of drilling cost.
Conventional reaming tool is generally hydraulic pressure reaming tool, though its hole diameter hole expansibility is big, but hydraulic pressure reaming tool structure is complicated, and operating difficulties and reliability are not high, meanwhile, there is also the too big of hole diameter expansion and cave-in phenomenon occurs.With boring micro-expanding drilling tool opposing hydraulic reaming tool, though little with boring micro-expanding drilling tool reaming hole diameter, but substantially can meet situ of drilling well job requirements very well.It is mainly used in shale drilling well, extended reach well drilling well, creep rock salt drilling well and bloating shale drilling well, in drilling process, not only can expand hole diameter with boring micro-expanding drilling tool, facilitate to enter under sleeve pipe, and can eliminate slight dog-leg and stir cutting bed.
Summary of the invention
This utility model provides a kind of micro-expanding drilling tool of downhole drill for solving the technical problem of existence in known technology, this instrument is possible not only to expand hole diameter, and can solve the problem such as cutting bed bit freezing problem, well necking down bit freezing problem and soft formation or caving ground setting of casing difficulty.
This utility model is adopted the technical scheme that by the technical problem solving to exist in known technology: a kind of micro-expanding drilling tool of downhole drill, including body, internal it is provided with hydrophthalmia at described, the box being connected with upper drilling string it is provided with in the upper end of described body, it is provided with the pin thread being connected with lower drilling string in the bottom of described body, is provided with the eccentric righting wing on the body.
The width of the described eccentric righting wing is 50-70mm.
Soldering PDC tooth and resistance to grinding column on the described eccentric righting wing.
Described resistance to grinding column is than described PDC tooth depth 0.5-1mm.
This utility model has the advantage that and has the benefit effect that employing monolithic construction, and simple in construction is easy to process；Adopting the eccentric righting wing, and make its width suitably narrow, runner increases, and makes the solids-carrying capacity at righting wing place strengthen, is not easily formed mud drum；Adopting soldering PDC tooth and resistance to grinding column on the eccentric righting wing, resistance to grinding column is than PDC tooth depth 0.5-1mm, it is possible to effectively protection PDC tooth.This utility model is possible not only to expand hole diameter, and can solve the problem such as cutting bed bit freezing problem, well necking down bit freezing problem and soft formation or caving ground setting of casing difficulty, highly versatile, wide adaptability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the A-A cut-away view of Fig. 1.
In figure: 1, box；2, body；3, hydrophthalmia；4, PDC tooth；5, resistance to grinding column；6, the eccentric righting wing；7, pin thread.
Detailed description of the invention
For summary of the invention of the present utility model, feature and effect can be further appreciated that, hereby enumerate following example, and it be as follows to coordinate accompanying drawing to describe in detail:
Referring to Fig. 1 and Fig. 2, a kind of micro-expanding drilling tool of downhole drill, including body 2, it is provided with hydrophthalmia 3 in described body 2, it is provided with the box 1 being connected with upper drilling string in the upper end of described body 2, is provided with pin thread 7 in the bottom of described body 2, described body 2 is provided with the eccentric righting wing 6.
In the present embodiment, the eccentric righting wing 6 always has 8, and 4 length 4 are short, and its width is 50-70mm, suitably narrows, and at the eccentric righting wing 6 place, runner broadens, and is not easily formed mud drum, and mud solids-carrying capacity strengthens, it is possible to effectively prevent the formation of well low limit cutting bed.Soldering PDC tooth 4 and resistance to grinding column 5 on the described eccentric righting wing 6.Described resistance to grinding column 5 0.5-1mm higher than described PDC tooth 4.So can ensure that the micro-expanding drilling tool of downhole drill is in entering well process, will not cut casing wall；In drilling process, along with the rotation of drill string, the PDC tooth on the eccentric righting wing can cut the borehole wall under the influence of centrifugal force, thus realizing expanding, simultaneously transfer in drill string process lifting up, it is possible to achieve positive reaming or back reaming, then eliminate slight dog-leg and stir cutting bed.
Although preferred embodiment of the present utility model being described above in conjunction with accompanying drawing; but this utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is merely schematic; it is not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; without departing under this utility model objective and scope of the claimed protection situation, it is also possible to making a lot of form, these belong within protection domain of the present utility model.
Claims (4)
1. the micro-expanding drilling tool of downhole drill, it is characterized in that, including body, internal it is provided with hydrophthalmia at described, the box being connected with upper drilling string it is provided with in the upper end of described body, it is provided with the pin thread being connected with lower drilling string in the bottom of described body, is provided with the eccentric righting wing on the body.
2. the micro-expanding drilling tool of downhole drill according to claim 1, it is characterised in that the width of the described eccentric righting wing is 50-70mm.
3. the micro-expanding drilling tool of downhole drill according to claim 1, it is characterised in that soldering PDC tooth and resistance to grinding column on the described eccentric righting wing.
4. the micro-expanding drilling tool of downhole drill according to claim 3, it is characterised in that described resistance to grinding column is than described PDC tooth depth 0.5-1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620117206.7U CN205370445U (en) | 2016-02-05 | 2016-02-05 | In pit along with boring little reaming well drilling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620117206.7U CN205370445U (en) | 2016-02-05 | 2016-02-05 | In pit along with boring little reaming well drilling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205370445U true CN205370445U (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620117206.7U Active CN205370445U (en) | 2016-02-05 | 2016-02-05 | In pit along with boring little reaming well drilling instrument |
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| Country | Link |
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| CN (1) | CN205370445U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168116A (en) * | 2016-08-25 | 2016-11-30 | 中国石油集团渤海钻探工程有限公司 | With boring micro-reaming borehole wall dressing tool and using method thereof |
| CN109555488A (en) * | 2019-01-15 | 2019-04-02 | 济源华新石油机械有限公司 | Spherical spiral wing stabilizer |
| CN109681121A (en) * | 2017-10-18 | 2019-04-26 | 天津北地天祥贸易有限公司 | A kind of downhole drill bidirectional eccentric pipe nipple expanding drilling tool |
| CN113492297A (en) * | 2021-07-01 | 2021-10-12 | 陈元 | Process for machining follow-up rotation cleaning scriber |
-
2016
- 2016-02-05 CN CN201620117206.7U patent/CN205370445U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168116A (en) * | 2016-08-25 | 2016-11-30 | 中国石油集团渤海钻探工程有限公司 | With boring micro-reaming borehole wall dressing tool and using method thereof |
| CN106168116B (en) * | 2016-08-25 | 2018-12-25 | 中国石油集团渤海钻探工程有限公司 | With the micro- reaming borehole wall dressing tool of brill and its application method |
| CN109681121A (en) * | 2017-10-18 | 2019-04-26 | 天津北地天祥贸易有限公司 | A kind of downhole drill bidirectional eccentric pipe nipple expanding drilling tool |
| CN109555488A (en) * | 2019-01-15 | 2019-04-02 | 济源华新石油机械有限公司 | Spherical spiral wing stabilizer |
| CN113492297A (en) * | 2021-07-01 | 2021-10-12 | 陈元 | Process for machining follow-up rotation cleaning scriber |
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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: 20161222 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: CNOOC Energy Technology Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Energy Technology Co., Ltd. |