CN205778560U - Eccentric hydraulic mechanical drilling and reaming integrated drill bit - Google Patents
Eccentric hydraulic mechanical drilling and reaming integrated drill bit Download PDFInfo
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- CN205778560U CN205778560U CN201620615386.1U CN201620615386U CN205778560U CN 205778560 U CN205778560 U CN 205778560U CN 201620615386 U CN201620615386 U CN 201620615386U CN 205778560 U CN205778560 U CN 205778560U
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- nozzle
- eddy flow
- drill bit
- bit
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- 238000005553 drilling Methods 0.000 title abstract description 23
- 238000002347 injection Methods 0.000 claims description 33
- 239000007924 injection Substances 0.000 claims description 33
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 31
- 238000004080 punching Methods 0.000 abstract 2
- 230000010354 integration Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 11
- 230000003628 erosive effect Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to an eccentric hydraulic machinery bores and expands integration drill bit, including top connection, drill bit body, the drill bit body outside is equipped with the wing of a knife. The drill bit body is eccentrically arranged at the lower part of the upper joint, a drill bit cavity is arranged inside the drill bit body, and the upper joint is provided with a connecting channel which is communicated up and down; the upper end of the drill bit cavity is communicated with the connecting channel; the drill bit body is provided with a recoil nozzle, a rotational flow cutting nozzle, an inclined punching nozzle and a direct punching nozzle which are communicated with the drill bit cavity. The drilling mud pressure is converted into kinetic energy through the nozzle of the integrated drill bit, the well bottom and well wall rocks are eroded and sheared and broken, and the plough blade type spiral blades are matched to cut the well bottom and well wall rocks, so that the hydraulic, mechanical drilling and hole expanding integrated operation of the drill bit is realized, and the mechanical drilling speed and the rock breaking efficiency of the drill bit are improved.
Description
Technical field
This utility model relates to oil-gas field drill field of engineering technology, particularly relates to a kind of centering type hydraulic and bores expansion one
Body drill bit.
Background technology
Along with going deep into of oil-gas resource exploration and development, complex geologic conditions, rate of penetration are low, drilling cost increases
The problem such as add to become clear day by day.Being continuously increased especially as drilling depth, the drilling fluid column pressure in pit shaft the most constantly increases,
More and more obvious to the chip hold down effect of landwaste, the transmission of the hydraulic energy in drilling process, change, distribute and utilization ratio also with
The increase well depth reduces further, and this directly results in the decline of bit speed.Preferred, the Drilling Water Radix Talini Paniculati of suitability drill bit
The optimization design of number, the efficient auxiliary rock of waterpower and bottom-hole cleaning landwaste, have become as raising bit speed, shorten shaft building week
Phase, the effective means of reduction drilling cost.Existing centering type drill bit relies primarily on drill bit eccentric setting and major axis sidewall
Tooth realizes mechanical type and breaks rock, expands the purpose of hole diameter, and the hydrojet nozzle on short axle sidewall acts primarily as spurt, scrubs the work of the borehole wall
With, bit hydraulic horsepower utilizes relatively low, and the structure of drill bit has to be optimized, the efficiency of breaking rock of drill bit, takes rock efficiency etc. and needs further
Improve.
Thus, the present inventor relies on experience and the practice being engaged in relevant industries for many years, proposes a kind of centering type hydraulic
Bore expansion bit Integrated, to overcome the defect of prior art.
Utility model content
It is bit Integrated, by drilling mud pressure that the purpose of this utility model is to provide a kind of centering type hydraulic to bore expansion
Kinetic energy, erosion, shearing-crushing shaft bottom and rock of borehole can be converted into, coordinate wing cutting shaft bottom, rock of borehole, it is achieved drill bit water
Power, machinery creep into, reaming institutional operation, improve drill bit rate of penetration and efficiency of breaking rock.
The purpose of this utility model be achieved in that a kind of centering type hydraulic bore expand bit Integrated, described partially
Core type hydraulic bores and expands bit Integrated top connection, the drill body of including, is provided with wing, described brill outside described drill body
Head body is eccentrically set on the bottom of described top connection, and the inside of described drill body is provided with drill bit cavity, and described top connection sets
There is the interface channel of up/down perforation；The upper end of described drill bit cavity communicates with described interface channel；Described drill body is provided with
The recoil nozzle, the eddy flow that communicate with described drill bit cavity cut nozzle, oblique impact nozzle and fling nozzle；Described oblique impact nozzle and institute
Stating and fling nozzle and be arranged on the bottom of described drill body, described recoil nozzle and described eddy flow cutting nozzle are arranged on described brill
The circumference side of head body, and described eddy flow cutting nozzle is positioned at the lower section of described recoil nozzle.
In a better embodiment of the present utility model, described drill body includes cylindrical body and coniform
Body, described coniform body is co-axially located at the bottom of described cylindrical body；Described top connection is eccentrically set on described cylinder
The top of shape body.
In a better embodiment of the present utility model, described recoil nozzle is provided with multiple, the most uniformly sets
Putting the top at described cylindrical body, the injection direction of described recoil nozzle is inclined upwardly.
In a better embodiment of the present utility model, the injection direction of described recoil nozzle and described drill body axle
The angle of line is 135 °.
In a better embodiment of the present utility model, described eddy flow cutting nozzle includes the cutting spray of multiple upper row's eddy flow
Mouth and multiple lower row's eddy flow cutting nozzle, described upper row's eddy flow cutting nozzle and described lower row's eddy flow cutting nozzle the most circumferentially side
To being uniformly arranged on described cylindrical body, described upper row's eddy flow cutting nozzle is positioned at the lower section of described recoil nozzle, its spray
Penetrate direction to be inclined upwardly；Described lower row's eddy flow cutting nozzle is positioned at the lower section of described upper row's eddy flow cutting nozzle, its injection direction
Downward-sloping.
In a better embodiment of the present utility model, the injection direction of described upper row's eddy flow cutting nozzle and described brill
The angle of head body axis is 105 °-110 °；The injection direction of described lower row's eddy flow cutting nozzle and described bit-body axis
Angle be 60 °.
In a better embodiment of the present utility model, described in fling nozzle and be co-axially located at described coniform body
On axis, described in fling the injection direction of nozzle towards underface.
In a better embodiment of the present utility model, described oblique impact nozzle is provided with multiple, is arranged on described coniform
On the conical surface of body, and multiple described oblique impact nozzle is being uniformly arranged on the described circumferencial direction flinging nozzle, described tiltedly
Rush the injection direction of nozzle obliquely downward.
In a better embodiment of the present utility model, the injection direction of described oblique impact nozzle and described drill body axle
The angle of line is 30 °.
In a better embodiment of the present utility model, described wing includes multiple plough sword formula wing, described plough sword formula
Wing is distributed uniformly and circumferentially outside described drill body；Each described plough sword formula wing from described coniform body in
Helical form extends up to the top of described cylindrical body.
In a better embodiment of the present utility model, described eddy flow cutting nozzle includes the cutting spray of multiple upper row's eddy flow
Mouth and multiple lower row's eddy flow cutting nozzle, described upper row's eddy flow cutting nozzle is along the circumferential direction uniformly arranged on described cylindric
The middle part of body；Described lower row's eddy flow cutting nozzle is along the circumferential direction uniformly arranged on the bottom of described cylindrical body；On described
The injection direction of row's eddy flow cutting nozzle is inclined upwardly；The injection direction of described lower row's eddy flow cutting nozzle is downward-sloping；
The described nozzle that flings is co-axially located on the axis of described coniform body, described in fling the injection direction court of nozzle
To underface；
Described oblique impact nozzle is provided with multiple, is arranged on the conical surface of described coniform body, and multiple described oblique impact nozzle
Being uniformly arranged on the described circumferencial direction flinging nozzle, the injection direction of described oblique impact nozzle is obliquely downward.
From the above mentioned, it is bit Integrated rational in infrastructure compact that centering type hydraulic of the present utility model bores expansion, installation side
Just.Fling nozzle, oblique impact nozzle by be arranged on the coniform body of drill bit, drilling mud pressure energy is converted into kinetic energy, can
Erosion bottom rock auxiliary rock, improves drill bit efficiency of breaking rock more than 30%.By the drill body designed with top connection bias,
Drive helical form plough sword formula wing carry out bias creep into, machine cut rock of borehole, well can be played mechanical hole reaming effect,
Borehole enlargement 15%-20%.By the eddy flow cutting nozzle being arranged on drill bit cylindrical body, drilling mud is converted into height
Rapid fire stream, eddy flow erosion, shearing-crushing rock of borehole, well can be further functioned as hydraulic reaming effect, borehole enlargement
100%-120%.By the recoil nozzle being arranged on drill bit cylindrical body, utilize the high-speed jet that nozzle produces at drill bit
Outer annular space forms negative pressuren zone, and shaft bottom mud and landwaste are played " siphonage ", and can be effectively improved drilling mud takes rock efficiency.
Accompanying drawing explanation
The following drawings is only intended to, in schematically illustrating this utility model and explaining, not limit model of the present utility model
Enclose.Wherein:
Fig. 1: bore for this utility model and expand bit Integrated overall structure schematic diagram.
Fig. 2: bore for this utility model and expand bit Integrated end view.
Fig. 3: for the Section A-A sectional view in Fig. 2.
Fig. 4: for the section B-B sectional view in Fig. 2.
Detailed description of the invention
In order to technical characteristic of the present utility model, purpose and effect are more clearly understood from, now comparison accompanying drawing explanation
Detailed description of the invention of the present utility model.
As shown in figures 1 and 3, this utility model provides a kind of centering type hydraulic and bores expansion bit Integrated 100, bag
Include top connection 1, drill body 2, wing, fling nozzle 9, oblique impact nozzle 8, eddy flow cutting nozzle, recoil nozzle 3.Connect on described
The 1 internal interface channel 102 being provided with its top and bottom through, in the upper end of top connection 1 uses, tapered screw thread 101 designs,
Being used for being connected with tool joint, the lower end of top connection 1 and drill body 2 use integral type bias to design；I.e. top connection 1 lower end with
Drill body 2 one connects, and the pivot center of top connection 1 has certain distance with the pivot center skew of drill body 2.Top connection
1 rotates under the drive of drilling rod, thus drill body 2 produces eccentric rotary, drives drill body 2 to creep in centering type, to well
Eye plays mechanical type reaming effect.Wing is arranged on the outer wall of drill body 2.Described oblique impact nozzle 8 and described fling nozzle 9
It is arranged on the bottom of described drill body 2, described recoil nozzle 3 and described eddy flow cutting nozzle and is arranged on described drill body
Circumference side, and described eddy flow cutting nozzle is positioned at the lower section of described recoil nozzle 3.The top of drill body 2 is cylindric
Body 202, bottom is coniform body 203, and described coniform body 203 is coaxially integrally disposed upon described cylindrical body 202
Bottom.Described top connection 1 is integrally eccentrically set on the top of described cylindrical body 202.The inside of described drill body 2 is provided with
Drill bit cavity 201, drill bit cavity 201 runs through whole cylindrical body 202, and the bottom of drill bit cavity 201 is through to coniform
The inside of body 203, the upper end of described drill bit cavity 201 communicates with described interface channel 102.Drilling mud can be passed into this drill bit
In cavity 201.Described drill body 2 is provided with recoil nozzle 3, the eddy flow cutting nozzle, tiltedly communicated with described drill bit cavity 201
Rush nozzle 8 and fling nozzle 9.Recoil nozzle 3, eddy flow cutting nozzle, oblique impact nozzle 8 and fling nozzle 9 and all penetrate drill body 2
Wall, drill bit cavity 201 is connected with bit exterior, drilling mud can by these nozzles spray drill body 2, be ejected into rock
On wall, the mechanical turning effort one with wing reacts on crag, plays the effect of auxiliary rock.
Further, as shown in Figure 3 and Figure 4, described recoil nozzle 3 is provided with five, is along the circumferential direction uniformly arranged on described
The top of cylindrical body 202, recoil nozzle 3 tilts upward from the Inside To Outside of cylindrical body 202 sidewall, i.e. described
The injection direction of recoil nozzle 3 is inclined upwardly.The axis of recoil nozzle 3 is defined as with the angle of drill body 2 axis with recoil
The axis of nozzle 3 is starting point, and being rotated downwardly to drill body 2 axis is terminal, and the angle that the axis of recoil nozzle 3 rotates through is i.e.
For this angle；The definition of angle described below is identical with this.The injection direction of described recoil nozzle 3 and described drill body 2
The angle of axis is 135 °.By the recoil nozzle 3 being arranged on drill bit cylindrical body 202, utilize the high speed that nozzle produces
Jet forms negative pressuren zone at the outer annular space of drill bit, shaft bottom mud and landwaste is played " siphonage ", can be effectively improved drilling mud
Take rock efficiency.
Further, described eddy flow cutting nozzle arranges eddy flow cutting spray under including five upper row's eddy flows cutting nozzles 4 and five
Mouth 6, described upper row's eddy flow cutting nozzle 4 and described lower row's eddy flow cutting nozzle 6 are the most along the circumferential direction uniformly arranged on described circle
In cylindrical body 202, described upper row's eddy flow cutting nozzle 4 is positioned at the lower section of described recoil nozzle 3, in the present embodiment, upper row
Eddy flow cutting nozzle 4 is positioned at the middle part of cylindrical body 202, and upper row's eddy flow cutting nozzle 4 is in cylindrical body 202 sidewall
Laterally outside tilts upward, i.e. its injection direction is inclined upwardly.Described lower row's eddy flow cutting nozzle 6 is positioned at described upper row's eddy flow
The lower section of cutting nozzle 4, in the present embodiment, lower row's eddy flow cutting nozzle 6 is positioned at the bottom of cylindrical body 202, and lower row is revolved
Stream cutting nozzle 6 tilts downward from the Inside To Outside of cylindrical body 202 sidewall, i.e. its injection direction is downward-sloping.Institute
The injection direction of the row's of stating eddy flow cutting nozzle 4 is 105 °-110 ° with the angle of described drill body 2 axis；Described lower row is revolved
The injection direction of stream cutting nozzle 6 is 60 ° with the angle of described drill body 2 axis.By being arranged on drill bit cylindrical body
Eddy flow cutting nozzle on 202, is converted into high-speed jet by drilling mud, and eddy flow erosion, shearing-crushing rock of borehole can be to wells
Eye further functions as hydraulic reaming effect, borehole enlargement 100%-120%.
Further, as shown in Figure 2, Figure 3 and Figure 4, described in fling nozzle 9 and be provided with one, be co-axially located at described coniform
On the axis of body 203, described in fling the injection direction of nozzle 9 towards underface.Described oblique impact nozzle 8 is provided with five, arranges
On the conical surface of described coniform body 203, and multiple described oblique impact nozzle 8 is around the described circumferencial direction flinging nozzle 9
On be uniformly arranged, the injection direction of described oblique impact nozzle 8 is obliquely downward.The injection direction of described oblique impact nozzle 8 and described brill
The angle of head body 2 axis is 30 °.Fling nozzle 9, oblique impact nozzle 8 by be arranged on the coniform body of drill bit 203, fill
Divide and utilize bernoulli principle, drilling mud pressure energy can be converted into by the throttling of oblique nozzle the kinetic energy of high-speed jet, can revolve
Stream erosion, cutting bottom rock auxiliary rock, improve drill bit efficiency of breaking rock more than 30%, well further functioned as hydraulic reaming
Effect.
Further, wing described in the present embodiment uses multiple plough sword formula wings 5, the sword of plough sword formula wing 5 to plough with rural area
The sword of the farm implements plough in field is similar, and plough sword cutting face is relatively thin, the sharpest, extends in the shape of a spiral, and rock breaking efficiency is the best, permissible
3-6 plough sword formula wing 5 is set.Described plough sword formula wing 5 is distributed uniformly and circumferentially outside described drill body 2；Often
Individual described plough sword formula wing 5 extends up to the upper of described cylindrical body 202 in the shape of a spiral from described coniform body 203
Portion.Described oblique impact nozzle 8, described upper row's eddy flow cutting nozzle 4, described lower row's eddy flow cutting nozzle 6 all with described plough sword formula cutter
The wing 5 interval is arranged, i.e. interval is arranged between adjacent two plough sword formula wing 5.Drill bit by design eccentric with top connection 1
Body 2, drive helical form plough sword formula wing 5 carry out bias creep into, machine cut rock of borehole, well can be able to be played machinery expansion
Hole effect, borehole enlargement 15%-20%.
From the above mentioned, centering type hydraulic of the present utility model bores and expands bit Integrated 100, flings nozzle by setting
9 and oblique impact nozzle 8, drilling mud pressure energy is converted into kinetic energy, erosion crushes bottom rock, coordinates and arranges on drill body 2
Plough sword formula spiral wing cutting bottom rock, improves drill bit efficiency of breaking rock.By the integral type to drill body 2 with top connection 1
Eccentric design, utilizes tool joint to drive the plough sword formula spiral wing of drill body 2 and upper setting thereof to carry out bias and creeps into, machinery
Cutting rock of borehole, plays mechanical type reaming effect to well.By arranging rotation with bottom in the middle part of drill bit cylindrical body 202
Stream cutting nozzle, utilizes the throttling action of nozzle that drilling mud is converted into high-speed jet, eddy flow erosion, shearing-crushing borehole wall rock
Stone, further functions as hydraulic reaming effect to well.By arranging one group of recoil nozzle 3 on drill bit cylindrical body top, utilize
The high-speed jet that nozzle produces forms negative pressuren zone at the outer annular space of drill bit, plays shaft bottom mud and landwaste " siphonage ", thus
That improves drilling mud takes rock efficiency, improves bit speed.
The foregoing is only the schematic detailed description of the invention of this utility model, be not limited to model of the present utility model
Enclose.Any those skilled in the art, equivalent done on the premise of without departing from design of the present utility model and principle becomes
Change and amendment, the scope of this utility model protection all should be belonged to.
Claims (11)
1. a centering type hydraulic brill expands bit Integrated, and described centering type hydraulic bores and expands bit Integrated including
Joint, drill body, be provided with wing outside described drill body, it is characterised in that described drill body is eccentrically set on described
The bottom of top connection, the inside of described drill body is provided with drill bit cavity, and described top connection is provided with the interface channel of up/down perforation；
The upper end of described drill bit cavity communicates with described interface channel；Described drill body is provided with anti-with what described drill bit cavity communicated
Rush nozzle, eddy flow cutting nozzle, oblique impact nozzle and fling nozzle；Described oblique impact nozzle and the described nozzle that flings are arranged on described brill
The bottom of head body, described recoil nozzle and described eddy flow cutting nozzle are arranged on the circumference side of described drill body, and institute
State eddy flow cutting nozzle and be positioned at the lower section of described recoil nozzle.
2. centering type hydraulic brill as claimed in claim 1 expands bit Integrated, it is characterised in that described drill body bag
Including cylindrical body and coniform body, described coniform body is co-axially located at the bottom of described cylindrical body；On described
Joint is eccentrically set on the top of described cylindrical body.
3. centering type hydraulic brill as claimed in claim 2 expands bit Integrated, it is characterised in that described recoil nozzle sets
Having multiple, be along the circumferential direction uniformly arranged on the top of described cylindrical body, the injection direction of described recoil nozzle is to updip
Tiltedly.
4. centering type hydraulic brill as claimed in claim 3 expands bit Integrated, it is characterised in that described recoil nozzle
Injection direction is 135 ° with the angle of described bit-body axis.
5. centering type hydraulic brill as claimed in claim 2 expands bit Integrated, it is characterised in that the cutting spray of described eddy flow
Mouth include multiple upper row's eddy flow cutting nozzle and multiple lower row's eddy flow cutting nozzle, described upper row's eddy flow cutting nozzle and described under
Row's eddy flow cutting nozzle is the most along the circumferential direction uniformly arranged on described cylindrical body, and described upper row's eddy flow cutting nozzle is positioned at
The lower section of described recoil nozzle, its injection direction is inclined upwardly；Described lower row's eddy flow cutting nozzle is positioned at described upper row's eddy flow and cuts
Cutting the lower section of nozzle, its injection direction is downward-sloping.
6. centering type hydraulic brill as claimed in claim 5 expands bit Integrated, it is characterised in that described upper row's eddy flow is cut
The angle of the injection direction and described bit-body axis of cutting nozzle is 105 °-110 °；The spray of described lower row's eddy flow cutting nozzle
The angle penetrating direction and described bit-body axis is 60 °.
7. centering type hydraulic as claimed in claim 2 bore expand bit Integrated, it is characterised in that described in fling nozzle with
Axle is arranged on the axis of described coniform body, described in fling the injection direction of nozzle towards underface.
8. centering type hydraulic brill as claimed in claim 7 expands bit Integrated, it is characterised in that described oblique impact nozzle sets
Have multiple, be arranged on the conical surface of described coniform body, and multiple described oblique impact nozzle is around the described circle flinging nozzle
Being uniformly arranged in circumferential direction, the injection direction of described oblique impact nozzle is obliquely downward.
9. centering type hydraulic brill as claimed in claim 8 expands bit Integrated, it is characterised in that described oblique impact nozzle
Injection direction is 30 ° with the angle of described bit-body axis.
10. centering type hydraulic brill as claimed in claim 2 expands bit Integrated, it is characterised in that described wing includes
Multiple plough sword formula wings, described plough sword formula wing is distributed uniformly and circumferentially outside described drill body；Each described plough
Sword formula wing extends up to the top of described cylindrical body in the shape of a spiral from described coniform body.
It is bit Integrated that 11. centering type hydraulics as claimed in claim 3 bore expansion, it is characterised in that described eddy flow cuts
Nozzle includes multiple upper row's eddy flow cutting nozzle and multiple lower row's eddy flow cutting nozzle, and described upper row's eddy flow cutting nozzle is circumferentially
Direction is uniformly arranged on the middle part of described cylindrical body；Described lower row's eddy flow cutting nozzle is along the circumferential direction uniformly arranged on institute
State the bottom of cylindrical body；The injection direction of described upper row's eddy flow cutting nozzle is inclined upwardly；The cutting spray of described lower row's eddy flow
The injection direction of mouth is downward-sloping；
The described nozzle that flings is co-axially located on the axis of described coniform body, described in fling the injection direction of nozzle towards just
Lower section；
Described oblique impact nozzle is provided with multiple, is arranged on the conical surface of described coniform body, and multiple described oblique impact nozzle is enclosing
Being uniformly arranged on the described circumferencial direction flinging nozzle, the injection direction of described oblique impact nozzle is obliquely downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620615386.1U CN205778560U (en) | 2016-06-21 | 2016-06-21 | Eccentric hydraulic mechanical drilling and reaming integrated drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620615386.1U CN205778560U (en) | 2016-06-21 | 2016-06-21 | Eccentric hydraulic mechanical drilling and reaming integrated drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205778560U true CN205778560U (en) | 2016-12-07 |
Family
ID=58129600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620615386.1U Active CN205778560U (en) | 2016-06-21 | 2016-06-21 | Eccentric hydraulic mechanical drilling and reaming integrated drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205778560U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448160A (en) * | 2017-08-08 | 2017-12-08 | 中国石油大学(北京) | Counterflush drilling device |
| CN109812232A (en) * | 2019-03-19 | 2019-05-28 | 西南石油大学 | A kind of self-advancing type multiple jet drill bit with support plate |
| CN112963164A (en) * | 2021-05-19 | 2021-06-15 | 山东汉鑫尊新材料有限公司 | Integral type entry driving machine is used in tunnel tunnelling |
| CN113047774A (en) * | 2021-03-18 | 2021-06-29 | 中煤科工集团西安研究院有限公司 | Broken stratum multistage hole wall repairing drilling tool combination and directional drilling method |
-
2016
- 2016-06-21 CN CN201620615386.1U patent/CN205778560U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448160A (en) * | 2017-08-08 | 2017-12-08 | 中国石油大学(北京) | Counterflush drilling device |
| CN107448160B (en) * | 2017-08-08 | 2023-08-15 | 中国石油大学(北京) | Reverse circulation well drilling device |
| CN109812232A (en) * | 2019-03-19 | 2019-05-28 | 西南石油大学 | A kind of self-advancing type multiple jet drill bit with support plate |
| CN113047774A (en) * | 2021-03-18 | 2021-06-29 | 中煤科工集团西安研究院有限公司 | Broken stratum multistage hole wall repairing drilling tool combination and directional drilling method |
| CN112963164A (en) * | 2021-05-19 | 2021-06-15 | 山东汉鑫尊新材料有限公司 | Integral type entry driving machine is used in tunnel tunnelling |
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