CN106368631B - Clean shaft bottom and Counterboring apparatus in underground - Google Patents
Clean shaft bottom and Counterboring apparatus in underground Download PDFInfo
- Publication number
- CN106368631B CN106368631B CN201610958171.4A CN201610958171A CN106368631B CN 106368631 B CN106368631 B CN 106368631B CN 201610958171 A CN201610958171 A CN 201610958171A CN 106368631 B CN106368631 B CN 106368631B
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- Prior art keywords
- nozzle
- reaming
- drill bit
- cleaning
- bit
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Abstract
The invention belongs to field of oil drilling, more particularly to nozzle and cleaning and reaming bit under a kind of underground cleaning shaft bottom and Counterboring apparatus, including steel grit injection tank, connection short circuit, reaming top nozzle, reaming.High-pressure slurry reaches underground after steel grit injection tank is mixed with steel grit and connect short circuit, connects and is symmetrical arranged nozzle under reaming top nozzle and reaming on short circuit, reaming top nozzle, which adjusts nozzle, can realize that steel grit jet stream spray angle is adjusted.After mud and particle enter drill bit inner flow passage, impact mud cake and neighbouring rock are sprayed from drill bit reaming jet nozzle and drill bit cleaning nozzle respectively.Nozzle, reaming top nozzle can realize that three-level reaming acts under drill bit reaming jet nozzle, reaming, may be selected to carry out cleaning shaft bottom operation using blind hole nozzle or carry out ream operation, can also select the type and quantity of nozzle.The present invention can efficiently complete cleaning shaft bottom operation and ream operation, and effectively removing shaft bottom, nearby pollutant restores oil gas circulation passage, efficiently realizes underground major diameter ream operation.
Description
Technical field
The present invention relates to a kind of underground cleaning shaft bottom and Counterboring apparatus, belong to petroleum drilling completion field.
Background technology
The drilling mud that oil drilling uses includes other additives such as water, oil, clay, minerals, heavy weight additive, drilling well mud
Slurry reaches shaft bottom drill bit from well head by well drilling pipe column, and cutting carring returns to well head from annular space after mud is sprayed by drill bit.Mud
The particle of the clay, the heavy weight additive that are added in slurry etc. is thinner, and drill bit generates cutting grain generally also relatively carefully.For prevent well kick,
The head of liquid of the generation of the accidents such as blowout, drilling mud is generally higher than the pressure of formation fluid.Contain in layer of oil gas production rock
There is a large amount of hole, is interconnected by runner between hole.Since mud pressure is higher than strata pressure, the fluid meeting in mud
Enter in formation pore under differential pressure action, the fine graineds such as remaining clay, heavy weight additive, landwaste are then attached to the table of formation rock
Face forms mud cake.The presence of mud cake can reduce formation rock permeability, after particle enters formation pore and throat in mud, meeting
Hole and runner are blocked, formation fluid is hindered to flow in pit shaft, results in the pollution of layer of oil gas production near wellbore zone.After a well is drilled
Mud cake can remove it by various methods, but easy-clear is not allowed in the pollution of near wellbore zone, because solid particle is being pressed
It is entered in formation pore and throat under the action of difference, causes fluid in stratum that cannot pass through near wellbore zone rock.Due to
Near wellbore zone Polluted area is relatively thin, and close to pit shaft, can be improved by measures such as acidifications, but imitate in many cases
Fruit is less desirable.
Drill out in existing wellbore lower part that larger diameter wellbore is extremely important in drilling process, also just usually said reaming
Operation.Diameter is less than top hole diameter when reaming bit or tool not reaming, and such reaming bit or tool can lead to
Cross top hole.Progress down-hole handling situations are needed to have：It forms large hole and carries out casing cementing, tripping in inflatable sleeves
Drilling tool is blocked on pipe, the stratum that prevents from collapsing.Down-hole drill bit or tool usually have special shape and structure, achieve the goal
It after layer, can trail, but since underground space is limited, drill bit and tool may not open completely, or after stretching out
Structure is unreliable, and the borehole diameter drilled out is caused to be less than design borehole diameter.And after reaming bit or tool are stretched out, rotating
During drilling, four weekly assemblies of drill bit or tool are constantly worn, the serious failure that may result in broaching equipment, or even can
Broaching equipment can be caused to fall shaft bottom.
Steel grit jet stream breaking technique for rock is remarkably improved the broken rock speed of hard formation, and steel grit jet stream can quick penetration metal
Or metal material.By the way that the steel particle of 1%-5% is added in mud, steel grit is carried to downhole drill bit or is cut by mud
Head is cut, steel grit accelerates to spray from nozzle, with up to a million frequency impact rocks per minute or other materials surface, realizes rock
The efficiency crushing of stone or other materials.The steel grit being crushed is carried into well head, after being recycled by magnetic separating device, again by
It is injected into mud and recycles.The technology can be applied in underground cleaning shaft bottom and ream operation, be penetrated using high speed steel grit
Percussion is flowed, can efficiently realize that near wellbore zone pollutant removes the ream operation with wellbore.
The present invention proposes a kind of underground cleaning shaft bottom and Counterboring apparatus, can efficiently complete cleaning shaft bottom operation and reaming is made
Industry greatly improves the efficiency in underground cleaning shaft bottom and ream operation, effective to remove shaft bottom pollutant recovery nearby gas stream
Circulation passage efficiently completes underground major diameter ream operation.
Invention content
The technical problem to be solved by the present invention is to：Offer one kind, which can carry out shaft bottom cleaning operation, can also carry out shaft bottom reaming
Near wellbore zone pollutant is efficiently removed in operation, realizes underground cleaning shaft bottom and the Counterboring apparatus of underground major diameter ream operation.
Underground cleaning shaft bottom of the present invention and Counterboring apparatus, including slush pump, mud pit, steel grit injection tank, the fire hose
Head, turntable, drilling rod, drill collar, connection short circuit, reaming top nozzle, nozzle, cleaning and reaming bit under reaming, drill bit reaming jet nozzle,
Drill bit cleaning nozzle, magnetic separating device composition.Mud pit is connected by pipeline with slush pump, and slush pump is connected by high pressure line
Steel grit injection tank, steel grit injection tank are connect by high pressure line connection tap, turntable is arranged in tap lower part, and turntable can drive brill
Bar rotates, and drill collar is arranged in the lower part of drilling rod, and drill collar is connected through a screw thread with short circuit is connect, and connects and is symmetrical arranged 2 expansions on short circuit
Nozzle under hole top nozzle and 2 reamings, connection short circuit lower part are arranged drill bit, 2 drill bit reaming jet nozzles and 2 are symmetrical arranged on drill bit
A drill bit cleaning nozzle, magnetic separating device are arranged in well head.
Slush pump sucks mud pit mud, after pressure slurry is formed high-pressure slurry, injects tank, steel grit injection by steel grit
After steel grit and high-pressure slurry pass sequentially through tap, drilling rod, drill collar after mixing in tank, reach connection short circuit, connects and set on short circuit
Nozzle under reaming top nozzle and reaming is set, nozzle is connected by screw thread with short circuit is connect respectively under reaming top nozzle and reaming, pressure
Nozzle under reaming top nozzle and reaming is pressed on connection short circuit, and is welded clamp nut by welding by tight nut.Connection
After the connection cleaning of short circuit lower part and reaming bit, steel grit and mud enter cleaning and reaming bit inner flow passage, into drill bit reaming
Nozzle and drill bit cleaning nozzle.When carrying out shaft bottom cleaning operation, steel grit and mud enter in drill bit cleaning nozzle, steel grit from
Drill bit cleaning nozzle is sprayed with 0~30 ° of spray angle, and the angle of drill bit cleaning nozzle axis and connection short circuit axis is 20~
40 °, after the sub- high speed impact of steel grit, the oblique impact mud cake of steel grit jet stream and neighbouring rock, steel grit jet stream only can impact grinding wellbore
Neighbouring mud cake and part rock, achieve the purpose that rapid cleaning wellbore.When carrying out down-hole operation, steel grit and mud difference
Nozzle interior runner under into drill bit reaming jet nozzle, reaming top nozzle, reaming is sprayed from nozzle is adjusted, and adjusting nozzle can adjust
The angle of steel grit jet stream is saved, steel grit and mud high speed spray, and steel grit impacts formation rock with high speed and frequency, and drill bit expands
Nozzle outer rim is suitable apart from drill axis distance and borehole diameter under hole nozzle, reaming top nozzle and reaming, therefore steel grit jet stream
Operation relatively short distance can impact wellbore surface rock, realize the efficiency crushing of rock, achieve the effect that reaming.Adjust nozzle stream
Road is more conducive to the acceleration of particle, while nozzle, reaming top nozzle under drill bit reaming jet nozzle, reaming for the circular arc-conical surface-cylindrical structure
Outer rim is sequentially increased at a distance from connection short circuit axis, therefore three-level reaming effect may be implemented, under reaming on nozzle and reaming
Nozzle can proceed with the ream operation of deeper distance, after three-level ream operation, it will it is more regular to form larger diameter
Reaming wellbore, while may be selected to carry out cleaning shaft bottom operation using blind hole nozzle or carrying out ream operation, can also select to spray
The type and quantity of mouth.
The beneficial effects of the invention are as follows：
Steel grit sprays impact mud cake and neighbouring rock from drill bit cleaning nozzle with angle adjustable high speed, can be quickly clear at a high speed
Except mud cake and neighbouring rock, achieve the purpose that rapidly and efficiently to clean wellbore.Adjusting nozzle flow channel is the circular arc-conical surface-cylindrical structure
The more conducively acceleration of particle, after steel grit is by the way that nozzle, reaming top nozzle spray under drill bit reaming jet nozzle, reaming, with adjustable angle
High speed impact near wellbore rock is spent, after three kinds of nozzle three-level ream operations, it will efficiently quickly form major diameter and more advise
Reaming wellbore then, while may be selected to carry out cleaning shaft bottom operation using blind hole nozzle or carrying out ream operation, it can also select
The type and quantity of nozzle.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
In figure：1, slush pump 2, mud pit 3, steel grit injection tank 4, tap 5, turntable 6, drilling rod 7, drill collar 8,
Nozzle 13, cleaning and reaming bit 14, magnetic separation under stratum 9, mud cake 10, connection short circuit 11, reaming top nozzle 12, reaming
Separator.
Fig. 2 is the diagrammatic cross-section of reaming top nozzle of the present invention.
In figure：11-1, reaming top nozzle adjust nozzle 11-2, reaming top nozzle housing 11-3, clamp nut 11-4,
Adjust sealed nozzle circle 11-5, clamp nut welding groove.
Fig. 3 is the diagrammatic cross-section of present invention cleaning and reaming bit.
In figure：13-1, drill body 13-2, drill bit reaming jet nozzle housing 13-3, drill bit reaming jet nozzle adjust nozzle
13-4, drill bit cleaning nozzle housing 13-5, drill bit cleaning nozzle adjust nozzle 13-6, drill bit inner flow passage 13-7, drill bit reaming
Sealed nozzle circle 13-8, drill bit cleaning nozzle sealing ring.
Specific implementation mode
The present invention is described further below in conjunction with the accompanying drawings：
As shown in Figure 1, quickly continuous window sidetracking device of the present invention, including：Slush pump 1, mud pit 2, steel grit
It injects under tank 3, tap 4, turntable 5, drilling rod 6, drill collar 7, stratum 8, mud cake 9, connection short circuit 10, reaming top nozzle 11, reaming
Nozzle 12, cleaning and reaming bit 13, magnetic separating device 14.Slush pump 1 sucks 2 mud of mud pit, and pressure slurry is formed
After high-pressure slurry, tank 3 is injected by steel grit, tap 4 is passed sequentially through after steel grit and high-pressure slurry mixing, turntable 5, drilling rod 6, is bored
Quickly after 7, reaches connection short circuit 10, connect and be symmetrical arranged nozzle 12 under 2 reaming top nozzles 11 and 2 reamings, steel grit on short circuit
Stratum 8 is impacted after being sprayed from nozzle 12 under hole top nozzle 11 and reaming, steel grit jet stream high speed impact is crushed bottom rock, realizes fast
Speed completes ream operation.After steel grit and slurry mixture enter cleaning and reaming bit 13, by cleaning the spray with reaming bit 13
Mouth sprays, and impacts mud cake 9, and steel grit jet stream can only impact mud cake and neighbouring rock, realize rapid cleaning wellbore operations.
As shown in Fig. 2, the internal structure of reaming top nozzle, including reaming top nozzle adjust nozzle 11-1, reaming top nozzle
Housing 11-2, clamp nut 11-3, sealed nozzle circle 11-4, clamp nut welding groove 11-5 are adjusted.Reaming top nozzle adjusts spray
Mouth 11-1 is embedded on reaming top nozzle housing 11-2, and incline bench is arranged among reaming top nozzle housing 11-2, can prevent from expanding
Hole top nozzle adjusts nozzle 11-1 and falls off under high pressure effect, and reaming top nozzle, which adjusts nozzle 11-1, can realize that steel grit jet stream sprays
Angular adjustment, it is twice O-ring seal to adjust sealed nozzle circle 11-4, and setting adjusts nozzle 11-1 and reaming in reaming top nozzle
Between top nozzle housing 11-2, play the role of sealing slurry or steel grit.Reaming top nozzle housing 11-2 is threadedly attached to company
It connects on short circuit 10, reaming top nozzle housing 11-2 axis are vertical with connection 10 axis of short circuit, and clamp nut 11-3 will by screw thread
Reaming top nozzle housing 11-2 is fixed on connection short circuit 10, while by clamp nut welding groove 11-5 by clamp nut
11-3, which is weldingly fixed on, to be connect on short circuit 10, prevents from falling off in the reaming top nozzle housing 11-2 courses of work.
As shown in figure 3, the internal structure of cleaning and reaming bit, including drill body 13-1, drill bit reaming jet nozzle housing
13-2, drill bit reaming jet nozzle adjust nozzle 13-3, drill bit cleaning nozzle housing 13-4, drill bit cleaning nozzle adjust nozzle 13-5,
Drill bit inner flow passage 13-6, drill bit reaming jet nozzle sealing ring 13-7, drill bit cleaning nozzle sealing ring 13-8.Drill bit reaming jet nozzle housing
13-2 is threadedly attached on drill body 13-1, and drill bit reaming jet nozzle housing 13-2 axis and drill axis are vertical, drill bit
Reaming jet nozzle adjusts nozzle 13-3 and is embedded on drill bit reaming jet nozzle housing 13-2, setting among drill bit reaming jet nozzle housing 13-2
Incline bench can prevent drill bit reaming jet nozzle from adjusting nozzle 13-3 and fall off under high pressure effect, and drill bit reaming jet nozzle adjusts nozzle
The adjusting of steel grit jet stream spray angle may be implemented in 13-3, and drill bit reaming jet nozzle sealing ring 13-7 is twice O-ring seal, setting
Between drill bit reaming jet nozzle adjusts nozzle 13-3 and drill bit reaming jet nozzle housing 13-2, play the role of sealing slurry or steel grit.
After mud and steel grit enter drill bit inner flow passage 13-6, respectively enters drill bit reaming jet nozzle and adjust nozzle 13-3 and drill bit cleaning spray
Mouth adjusts nozzle 13-5.Drill bit reaming jet nozzle adjusts nozzle 13-3 and protrudes drill bit certain length, and drill bit cleaning nozzle adjusts nozzle
13-5 also protrudes drill bit certain length.Drill bit cleaning nozzle adjusts nozzle 13-5 and is embedded on drill bit cleaning nozzle housing 13-4,
Incline bench is set among drill bit cleaning nozzle housing 13-4, can prevent drill bit cleaning nozzle from adjusting nozzle 13-5 and be acted in high pressure
Under fall off, drill bit cleaning nozzle adjusts nozzle 13-5 and the adjusting of steel grit jet stream spray angle may be implemented, and drill bit cleaning nozzle is close
Seal 13-8 is twice O-ring seal, and setting adjusts nozzle 13-5 and drill bit cleaning nozzle housing 13-4 in drill bit cleaning nozzle
Between, play the role of sealing slurry or steel grit.Drill bit cleaning nozzle housing 13-4 axis and cleaning and 13 axis of reaming bit
Angle be 20~40 °, steel grit jet stream can only remove mud cake 9 and nearby rock pollutant.
Claims (6)
1. a kind of underground cleaning shaft bottom and Counterboring apparatus, including slush pump (1), mud pit (2), steel grit injection tank (3), tap
(4), turntable (5), drilling rod (6), drill collar (7), stratum (8), mud cake (9), connection short circuit (10), reaming top nozzle (11), reaming
Lower nozzle (12), cleaning and reaming bit (13), magnetic separating device (14), slush pump (1) sucks mud pit (2) mud, high
It presses mud to inject tank (3) by steel grit, tap (4), turntable (5), drilling rod is passed sequentially through after steel grit and high-pressure slurry mixing
(6), after drill collar (7), reach connection short circuit (10), connect and be symmetrical arranged under 2 reaming top nozzles (11) and 2 reamings on short circuit
Nozzle (12), steel grit impact stratum (8) after being sprayed from nozzle (12) under hole top nozzle (11) and reaming, steel grit and slurry mixture
It into cleaning with after reaming bit (13), is sprayed with the nozzle of reaming bit (13) by cleaning, impact mud cake (9) and neighbouring rock
Stone.
2. underground cleaning shaft bottom according to claim 1 and Counterboring apparatus, it is characterised in that：Reaming top nozzle adjusts nozzle
(11-1) is embedded on reaming top nozzle housing (11-2), and incline bench, reaming are arranged among reaming top nozzle housing (11-2)
Top nozzle adjusts the adjusting that steel grit jet stream spray angle can be achieved in nozzle (11-1), and it is twice O to adjust sealed nozzle circle (11-4)
Type sealing ring, setting are adjusted in reaming top nozzle between nozzle (11-1) and reaming top nozzle housing (11-2), reaming top nozzle
Housing (11-2) is threadedly attached on connection short circuit (10), reaming top nozzle housing (11-2) axis and connection short circuit (10)
Axis is vertical, and reaming top nozzle housing (11-2) is fixed connection short circuit (10) by clamp nut (11-3) by screw thread
On, while clamp nut (11-3) being weldingly fixed on by clamp nut welding groove (11-5) and is connect on short circuit (10).
3. underground cleaning shaft bottom according to claim 1 and Counterboring apparatus, it is characterised in that：Drill bit reaming jet nozzle housing
(13-2) is threadedly attached on drill body (13-1), drill bit reaming jet nozzle housing (13-2) axis and cleaning and reamer
Head (13) axis is vertical, and drill bit reaming jet nozzle adjusts nozzle (13-3) and is embedded on drill bit reaming jet nozzle housing (13-2), drill bit
Incline bench is set among reaming jet nozzle housing (13-2), and drill bit reaming jet nozzle adjusts nozzle (13-3) and steel grit jet stream spray can be achieved
The adjusting of firing angle degree, drill bit reaming jet nozzle sealing ring (13-7) are twice O-ring seal, and setting is adjusted in drill bit reaming jet nozzle sprays
Between mouth (13-3) and drill bit reaming jet nozzle housing (13-2), after mud and particle enter drill bit inner flow passage (13-6), respectively
Nozzle (13-3) is adjusted into drill bit reaming jet nozzle and drill bit cleaning nozzle adjusts nozzle (13-5), and drill bit cleaning nozzle adjusts spray
Mouth (13-5) is embedded on drill bit cleaning nozzle housing (13-4), and benchboard is arranged among drill bit cleaning nozzle housing (13-4)
Rank, drill bit cleaning nozzle sealing ring (13-8) be twice O-ring seal, setting drill bit cleaning nozzle adjust nozzle (13-5) and
Between drill bit cleaning nozzle housing (13-4).
4. underground cleaning shaft bottom according to claim 1 and Counterboring apparatus, it is characterised in that：Reaming top nozzle (11) axis
And distance is 0.5~5 times of cleaning and reaming bit (13) diameter between nozzle (12) axis under reaming, reaming top nozzle adjusts spray
Angle between mouth (11-1) axis and reaming top nozzle housing (11-2) axis is 0~30 °, i.e. spray angle adjustable range is
0~30 °, reaming top nozzle adjust nozzle (11-1) runner be the circular arc-conical surface-cylindrical structure, arc length, conical surface length and
Body length ratio is 3：4：6.
5. underground cleaning shaft bottom according to claim 1 and Counterboring apparatus, it is characterised in that：Drill bit reaming jet nozzle adjusts spray
Mouth (13-3) outer rim protrudes 0.2~0.6 times of cleaning of cleaning and reaming bit (13) outer rim and reaming bit (13) diameter, drill bit are clear
Clean cut-out governing nozzle (13-5) outer rim protrudes 0.1~0.5 times of cleaning and reaming bit (13) diameter, and drill bit reaming jet nozzle is adjusted
Angle is 0~30 ° between nozzle (13-3) and drill bit reaming jet nozzle housing (13-2), i.e., spray angle adjustable range be 0~
30 °, drill bit cleaning nozzle housing (13-4) axis is 20~40 ° with cleaning and reaming bit (13) axis angle, drill bit cleaning
Cut-out governing nozzle (13-5) axis is 0~20 ° with drill bit cleaning nozzle housing (13-4) axis angle.
6. underground cleaning shaft bottom according to claim 1 and Counterboring apparatus, it is characterised in that：Drill bit reaming jet nozzle adjusts spray
Nozzle (12), reaming top nozzle (11) outer rim are sequentially increased at a distance from connection short circuit axis under mouth (13-3), reaming, distance
Difference is 0.05 times of cleaning and reaming bit (13) diameter, therefore can realize that three-level reaming acts on, nozzle (12) and reaming under reaming
Top nozzle (11) can proceed with the ream operation for more deepening distance, after three-level ream operation, it will form larger diameter
More regular reaming wellbore, while may be selected to carry out cleaning shaft bottom operation using blind hole nozzle or carrying out ream operation, also may be used
To select the type and quantity of nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958171.4A CN106368631B (en) | 2016-10-28 | 2016-10-28 | Clean shaft bottom and Counterboring apparatus in underground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958171.4A CN106368631B (en) | 2016-10-28 | 2016-10-28 | Clean shaft bottom and Counterboring apparatus in underground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106368631A CN106368631A (en) | 2017-02-01 |
| CN106368631B true CN106368631B (en) | 2018-08-14 |
Family
ID=57893676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610958171.4A Active CN106368631B (en) | 2016-10-28 | 2016-10-28 | Clean shaft bottom and Counterboring apparatus in underground |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425661B (en) * | 2018-04-16 | 2024-01-16 | 中国石油大学(华东) | Continuous oil pipe steel shot jet perforation device |
| CN110005377B (en) * | 2019-04-02 | 2021-04-06 | 中国地质科学院勘探技术研究所 | Method for building vertical well bottom chamber |
| CN110989302A (en) * | 2019-12-29 | 2020-04-10 | 无锡中微掩模电子有限公司 | General acid-resistant arm for mask photoresist stripping |
| CN113431498B (en) * | 2021-07-21 | 2023-02-10 | 辽宁工程技术大学 | Pulse gas coal breaking and reaming device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7793741B2 (en) * | 2003-04-16 | 2010-09-14 | Pdti Holdings, Llc | Impact excavation system and method with injection system |
| CN101586441B (en) * | 2009-07-01 | 2012-09-19 | 煤炭科学研究总院重庆研究院 | High-pressure water jet system and method for drilling and enlarging holes on coal bed |
| CN102022078A (en) * | 2009-09-11 | 2011-04-20 | 中国石化集团胜利石油管理局钻井工艺研究院 | Particle percussive drilling method and device |
| CN102767333B (en) * | 2011-05-06 | 2014-09-03 | 中国石油天然气集团公司 | Particle impact drilling simulation experiment method and device thereof |
| CN202157747U (en) * | 2011-06-23 | 2012-03-07 | 中国石油天然气集团公司 | Particle impact drilling device for steel particle slurry of direct pump |
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