CN106761382B - A kind of deep-well coring device and its operating method - Google Patents
A kind of deep-well coring device and its operating method Download PDFInfo
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- CN106761382B CN106761382B CN201611180239.7A CN201611180239A CN106761382B CN 106761382 B CN106761382 B CN 106761382B CN 201611180239 A CN201611180239 A CN 201611180239A CN 106761382 B CN106761382 B CN 106761382B
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- 238000011017 operating method Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 25
- 238000005553 drilling Methods 0.000 claims description 16
- 230000009471 action Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- 210000000515 tooth Anatomy 0.000 claims 2
- 238000000034 method Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of deep-well coring device and its operating methods, described device is mainly by upper housing, turbine wheel shaft, alignment bearing, turbine stator, turbine rotor, flow guiding connector, stator support sleeve, transmission shaft, upper bearing support group, interior adjusting set, outer adjusting set, transit joint, anti-lost end cap, bolt, middle shell, lower support bearing group, locking cap, end ring, tapered roller bearing, planet wheel case, pin shaft, planetary gear, cover board, thrust bearing, mandrel connector, lower case, steel ball, coring tube, core pawl, core cylinder centralizer, coring bit composition, when carrying out coring, turbine drives turbine wheel shaft rotates and is further driven to flow guiding connector and transmission shaft rotation, transmission shaft passes through shell in planetary gear drive, lower case and coring bit rotation, coring tube is entered by the core that coring bit drills through.Described device is rotated without drill string, to can avoid the phenomenon that drill string twists off occur since well depth is excessive, which is suitable for deep-well.
Description
Technical field
The present invention relates to a kind of coring devices and its operating method suitable for deep-well, belong to oil and gas exploitation industry
Drilling engineering technical field.
Background technique
Demand with China to petroleum resources is continuously increased and the fast development of oil & gas industry, the oil gas of shallow stratum
Resource is constantly reduced, and current oil pneumatic drill, which is adopted, constantly to be developed to deep formation, and the quantity of deep & ultra-deep well is also being continuously increased.In oil
In gas field exploration development process, it usually needs the stratum geological characteristics for understanding survey area first, to grasp the firsthand information.
By core-drilling in the earth formation and the physico mechanical characteristic of core is analyzed, the property on correlation stratum and oil-gas Layer can be predicted, be
It formulates reasonable development plan, accurate CALCULATING OILFIELD reserves, well stimulation offer reliable basis is provided.Due to oil-gas exploration operation
Range is wide and quantity is big, therefore coring also has biggish demand.
Currently, oil field when carrying out coring, mostly uses greatly the conventional driving method using well head turntable as power source, i.e.,
Well head motor driven turntable rotates and is further driven to entire drill string rotation, and import energy is reached shaft bottom drill bit simultaneously by drill string
For core-drilling.This mode can satisfy relevant coring requirement in, in the operation on shallow stratum, but for deep-well
Coring be but restricted.On the one hand, when well depth is larger, the energy demand transmitted from drill string is just reached by larger distance
At drill bit, so that demand of the whole system to energy is larger and the capacity usage ratio at drill bit is lower；On the other hand, turntable is being incited somebody to action
During well head torque reaches underground, often there is frictional resistance between drill string and the borehole wall, drill string is longer, and frictional resistance is bigger, when drill string institute
The torque of receiving will will cause the phenomenon that drill string twists off when reaching certain numerical value.Further, since drill string has the spy of big L/D ratio
Property, thus its rigidity is smaller, drill string is easy to produce twisting vibration under torque effect, to cause core sample destruction etc. existing
As.In order to solve the problems, such as that above-mentioned deep & ultra-deep well coring is difficult, it usually needs be equipped with other increase energy in coring tool
Device, but the capacity usage ratio of this mode is not equally high.Since the energy of the DRILL-STRING SYSTEM of rotation is not greatly straight
It connects and is used at drill bit, but consumed by the movement of drill string, therefore how to design a kind of rotate without drill string to realize coring
Device become as a kind of new approaches, and carry out the difficult point of deep-well coring.
Summary of the invention
It is an object of the invention in order to overcome above-mentioned difficult point, spy proposes a kind of deep-well coring device and its operating method
It sets, to realize to deep formation core sampling.
In order to achieve the above objectives, the present invention solve this technical problem the technical solution adopted is that:
A kind of deep-well coring device, mainly by upper housing, turbine wheel shaft, alignment bearing, turbine stator, turbine rotor, water conservancy diversion
Connector, stator support sleeve, transmission shaft, upper bearing support group, interior adjusting set, outer adjusting set, transit joint, anti-lost end cap, bolt,
Middle shell, locking cap, end ring, tapered roller bearing, planet wheel case, pin shaft, planetary gear, cover board, stops at lower support bearing group
Thrust bearing, mandrel connector, lower case, steel ball, coring tube, core pawl, core cylinder centralizer, coring bit composition, it is characterised in that:
The upper end of the upper housing is connect with top rod, and lower end is connect by screw thread with transit joint；The turbine wheel shaft is equipped with diameter
To runner, alignment bearing is equipped between turbine wheel shaft and the inner wall of upper housing, turbine wheel shaft is connect by screw thread with flow guiding connector；It is described fixed
Turbine stator is fixed the inner wall in upper housing by sub- support sleeve, and turbine rotor is fixed in turbine wheel shaft by flow guiding connector
On, flow guiding connector is equipped with radial flow path, and flow guiding connector passes through screw thread and transmission axis connection；The inner ring of the upper bearing support group with
Outer ring is fixed the inner wall of outer wall and upper housing in transmission shaft respectively, and interior adjusting set and outer adjusting set are respectively used in adjusting
The inner ring of bearing support group and the tightness of outer ring, interior adjusting set are connect by the step of transmission shaft and transition respectively with outer adjusting set
The end face support of head；The anti-lost end cap is fixed by bolts in the upper end of middle shell, and anti-lost end cap is in semi-annular shape and its
The groove of circle insertion transit joint；Lower support bearing group is equipped between the transit joint and middle shell, lower support bearing group
Inner ring and outer ring are fixed the inner wall of outer wall and middle shell in transit joint respectively, and anti-lost end cap is respectively used to locking cap
Compress inner ring and the outer ring of lower support bearing group；The end ring is fixed by bolts in planetary gear and puts on, and end ring is used
In the axial displacement of limitation tapered roller bearing, the cover board is fixed by bolts in planetary gear and puts on, planet wheel case and planet
Pin shaft is equipped between wheel；The middle shell is connected through a screw thread with lower case, is equipped between mandrel connector and the step of lower case upper end
The middle section of thrust bearing, mandrel connector is equipped with radial flow path, and mandrel connector is connected through a screw thread with coring tube, in the upper of coring tube
End is equipped with steel ball；The lower end of the core pawl and coring tube is connected through a screw thread；The lower end of the core cylinder centralizer and coring tube
It is connected through a screw thread, is equipped with shaft orientation flowing channel in the outside of core cylinder centralizer；The coring bit is connect by screw thread with lower case.
A kind of deep-well coring device, it is characterised in that: the outer diameter of the steel ball is greater than the internal diameter of coring tube.
A kind of deep-well coring device, it is characterised in that: the core pawl is equipped with teeth and makes core can only
It moves up.
A kind of deep-well coring device, it is characterised in that: the alignment bearing can be deep groove ball bearing.
A kind of deep-well coring device, it is characterised in that: the outside of the lower case can be equipped with centralizing function
Hurricane band, the outer diameter of hurricane band and the outer diameter of coring bit are identical.
A kind of operating method of the deep-well coring device, it is characterised in that: the upper housing is connect with top rod,
After entering described device by the downward fluid of top rod, entered by the radial flow path of turbine wheel shaft by turbine stator and turbine
The stage of turbine of rotor composition；Since turbine stator and turbine rotor are individually fixed on upper housing and turbine wheel shaft, in the work of fluid
Under, turbine rotor high-speed rotation, and it is further driven to turbine wheel shaft, flow guiding connector, transmission shaft high-speed rotation；The turbine is fixed
Son, the outer ring of stator support sleeve, bearing support group, outer adjusting set are compressed by transit joint end；The turbine wheel shaft, righting axis
It holds, the weight of turbine rotor, flow guiding connector, transmission shaft, bearing support group inner ring and act on turbine wheel shaft and turbine rotor
Hydraulic thrust pass through bearing support group and be ultimately applied to the end of transit joint；The quantity of the anti-lost end cap is 2,
Effect is to prevent middle shell and its lower part from falling off from transit joint；The end ring, tapered roller bearing, planetary gear
Set, pin shaft, planetary gear, cover board collectively constitute deceleration unit, and the transmission shaft of high-speed rotation after deceleration unit acts in driving
Shell slowly runs, and middle shell is further driven to lower case and coring bit slowly runs；When not carrying out coring, due to
The effect of steel ball, the fluid into mandrel connector can not be passed through by the center of coring tube, fluid by mandrel connector radial flow path
Into the annular space between coring tube and lower case and flow to shaft bottom；When carrying out coring, into mandrel connector fluid still
The annular space that is entered between coring tube and lower case by its radial flow path simultaneously flows to shaft bottom, is subsequently entered by the core that coring bit drills through
Core pawl, the teeth that core pawl is equipped with makes core that can only move up and can not move down, during core moves up,
Steel ball is opened under the action of core and by coring tube gradually outlet by fluid in coring tube, so that the coring occupied by fluid
Space inside cylinder is gradually substituted by core；The length that institute's coring can be calculated according to the drilling depth of coring bit, needed for acquirement
After the core of length, the coring device can be proposed well head, then successively by coring bit, core cylinder centralizer and core pawl
It dismantles and takes out core；Power directly can be reached middle shell by the transmission shaft inside device and passed by the coring device
To coring bit, without rotating whole drill string as conventional drilling, avoidable deep-well torque is excessive and is broken drill string, therefore
The apparatus and method are suitable for the coring of deep-well.
The operating method of a kind of deep-well coring device, it is characterised in that: when use described device carries out coring work
When industry, device is directly connect with upper drilling string or is connect by crossover sub with upper drilling string, and is passed through in drill string by well head
Chamber conveys downwards drilling fluid for removing landwaste and cooling coring bit.
Compared with prior art, the invention has the advantages that: (1) apparatus of the present invention in operation without by turn
Torque is reached drill bit by dynamic upper drilling string, the phenomenon that drill string twists off is easy to appear when to avoiding conventional heavy duty service, therefore
Suitable for heavy duty service；(2) apparatus of the present invention can be by selecting the specification of different stage of turbines and the specification of retarder, and is equipped with not
Same fluid flow and pump pressure realizes the revolving speed control of coring bit, to control coring speed；(3) apparatus of the present invention and its side
Method rotates drill string due to being not necessarily to, so as to reduce the energy consumption of system.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of deep-well coring device of the present invention；
Fig. 2 is the partial enlargement diagram of structure at planetary gear in Fig. 1；
Fig. 3 is the cross-sectional view of the Section A-A in Fig. 1；
Fig. 4 is the cross-sectional view of the section B-B in Fig. 1；
Fig. 5 is the cross-sectional view in the section C-C in Fig. 1；
Fig. 6 is the cross-sectional view in the section D-D in Fig. 1；
Fig. 7 is the cross-sectional view in the section E-E in Fig. 1；
Fig. 8 is the cross-sectional view in the section F-F in Fig. 1；
Fig. 9 is the cross-sectional view in the section G-G in Fig. 1；
Figure 10 is a kind of structural schematic diagram of the planet wheel case of deep-well coring device of the present invention；
Figure 11 is the side view of Figure 10；
Figure 12 is a kind of working state schematic representation of the deep-well coring device of the present invention when steel ball is close to coring tube upper end；
Figure 13 be a kind of deep-well coring device of the present invention when core enters coring tube and due to fluid outlet in coring tube and
Working state schematic representation when steel ball is pushed up；
In figure: 1. upper housings, 2. turbine wheel shafts, 3. alignment bearings, 4. turbine stators, 5. turbine rotors, 6. flow guiding connectors, 7.
Stator support sleeve, 8. transmission shafts, bearing support group on 9., adjusting set in 10., 11. outer adjusting sets, 12. transit joints, 13. is anti-
Fall end cap, 14. bolts, shell in 15., 16. lower support bearing groups, 17. locking caps, 18. end rings, 19. taper roller axis
It holds, 20. planet wheel cases, 21. pin shafts, 22. planetary gears, 23. cover boards, 24. thrust bearings, 25. mandrel connectors, 26. lower cases,
27. steel lid, 28. coring tubes, 29. core pawls, 30. core cylinder centralizers, 31. coring bits, 32. cores.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
As shown in Figure 1 to 11, a kind of deep-well coring device, mainly by upper housing 1, turbine wheel shaft 2, alignment bearing 3, turbine
Stator 4, turbine rotor 5, flow guiding connector 6, stator support sleeve 7, transmission shaft 8, upper bearing support group 9, interior adjusting set 10, outer adjusting
Cover 11, transit joint 12, anti-lost end cap 13, bolt 14, middle shell 15, lower support bearing group 16, locking cap 17, end ring
18, tapered roller bearing 19, planet wheel case 20, pin shaft 21, planetary gear 22, cover board 23, thrust bearing 24, mandrel connector 25, under
Shell 26, steel ball 27, coring tube 28, core pawl 29, core cylinder centralizer 30, coring bit 31 form, it is characterised in that: on described
The upper end of shell 1 is connect with top rod, and lower end is connect by screw thread with transit joint 12；The turbine wheel shaft 2 is equipped with radial
Runner, is equipped with alignment bearing 3 between turbine wheel shaft 2 and the inner wall of upper housing 1, turbine wheel shaft 2 is connect by screw thread with flow guiding connector 6；Institute
It states stator support sleeve 7 turbine stator 4 is fixed in the inner wall of upper housing 1, turbine rotor 5 is fixed by flow guiding connector 6
In on turbine wheel shaft 2, flow guiding connector 6 is equipped with radial flow path, and flow guiding connector 6 is connect by screw thread with transmission shaft 8；The upper support shaft
The inner ring and outer ring that hold group 9 are fixed the inner wall of outer wall and upper housing 1 in transmission shaft 8, interior adjusting set 10 and transferring respectively
Section set 11 is respectively used to adjust the inner ring of bearing support group 9 and the tightness of outer ring, interior adjusting set 10 and outer adjusting set 11
It is supported respectively by the end face of the step of transmission shaft 8 and transit joint 12；The anti-lost end cap 13 is fixed on middle shell by bolt 14
The upper end of body 15, anti-lost end cap 13 are the groove that semi-annular shape and its inner ring are embedded in transit joint 12；The transit joint 12
Lower support bearing group 16 is equipped between middle shell 12, the inner ring of lower support bearing group 16 is fixed respectively with outer ring to be connect in transition
The inner wall of first 12 outer wall and middle shell 15, anti-lost end cap 13 are respectively used to compress the interior of lower support bearing group 16 with locking cap 17
Circle and outer ring；The end ring 18 is fixed in planet wheel case 20 by bolt 14, and end ring 18 is for limiting circular cone rolling
The axial displacement of sub- bearing 19, the cover board 23 are fixed in planet wheel case 20 by bolt 14, planet wheel case 20 and planetary gear
Pin shaft 21 is equipped between 22；The middle shell 15 is connected through a screw thread with lower case 26, mandrel connector 25 and 26 upper end of lower case
Thrust bearing 24 is equipped between step, the middle section of mandrel connector 25 is equipped with radial flow path, and mandrel connector 25 and coring tube 28 pass through spiral shell
Line connection is equipped with steel ball 27 in the upper end of coring tube 28；The lower end of the core pawl 29 and coring tube 28 is connected through a screw thread；Institute
It states core cylinder centralizer 30 and the lower end of coring tube 28 is connected through a screw thread, be equipped with shaft orientation flowing channel in the outside of core cylinder centralizer 30；
The coring bit 31 is connect by screw thread with lower case 26.
As shown in figs. 1 and 12, a kind of deep-well coring device, it is characterised in that: the outer diameter of the steel ball 27 is big
In the internal diameter of coring tube 28.
As shown in Figure 1, a kind of deep-well coring device, it is characterised in that: the core pawl 29 is equipped with teeth
So that core 32 can only move up.
A kind of deep-well coring device, it is characterised in that: the alignment bearing 3 can be deep groove ball bearing.
A kind of deep-well coring device, it is characterised in that: the outside of the lower case 26 can be equipped with righting work
The outer diameter of hurricane band, hurricane band is identical as the outer diameter of coring bit 31.
As shown in figure 1 to figure 13, a kind of operating method of deep-well coring device, it is characterised in that: the upper casing
Body 1 is connect with top rod, after entering described device by the downward fluid of top rod, passes through the radial flow path of turbine wheel shaft 2
Into the stage of turbine being made of turbine stator 4 and turbine rotor 5；Since turbine stator 4 and turbine rotor 5 are individually fixed in upper casing
On body 1 and turbine wheel shaft 2, under action of a fluid, 5 high-speed rotation of turbine rotor, and it is further driven to turbine wheel shaft 2, flow guiding connector
6,8 high-speed rotation of transmission shaft；The turbine stator 4, stator support sleeve 7, the outer ring of bearing support group 9, outer adjusting set 11 by
12 end of transit joint compresses；The turbine wheel shaft 2, alignment bearing 3, turbine rotor 5, flow guiding connector 6, transmission shaft 8, bearing support
The weight of 9 inner rings of group and the hydraulic thrust acted on turbine wheel shaft 2 and turbine rotor 5 pass through bearing support group 9 and finally make
End for transit joint 12；The quantity of the anti-lost end cap 13 is 2, and its role is to prevent middle shell 15 and its underpart
Part falls off from transit joint 12；The end ring 18, tapered roller bearing 19, planet wheel case 20, pin shaft 21, planetary gear
22, cover board 23 collectively constitutes deceleration unit, the transmission shaft 8 of high-speed rotation 15 low speed of shell in driving after deceleration unit acts on
Rotation, middle shell 15 is further driven to lower case 26 and coring bit 31 slowly runs；When not carrying out coring, due to steel
The effect of ball 27, the fluid into mandrel connector 25 can not be passed through by the center of coring tube 28, fluid by mandrel connector 25 diameter
Annular space from lower case 26 to runner that enter between coring tube 28 and simultaneously flows to shaft bottom；When carrying out coring, into mandrel connector
Annular space that 25 fluid is still entered between coring tube 28 and lower case 26 by its radial flow path simultaneously flows to shaft bottom, by coring bit 31
The core 32 drilled through subsequently enters core pawl 29, the teeth that core pawl 29 is equipped with make core 32 can only move up and can not under
Move, during core 32 moves up, fluid in coring tube 28 under the action of core 32 by steel ball 27 open and by
The gradually outlet of coring tube 28, so that the space inside the coring tube 28 occupied by fluid is gradually substituted by core 32；According to coring
The drilling depth of drill bit 31 can calculate the length of institute's coring 32, after the core 32 of the length needed for obtaining, can fill the coring
It is proposed well head is set, then successively dismantle coring bit 31, core cylinder centralizer 30 and core pawl 29 and takes out core；Described takes
Power directly can be reached middle shell 15 by the transmission shaft 8 inside device and reach coring bit 31 by core apparatus, without as often
Rule drilling well equally rotates whole drill string, and avoidable deep-well torque is excessive and is broken drill string, therefore the apparatus and method are suitable
Coring for deep-well.
The operating method of a kind of deep-well coring device, it is characterised in that: when use described device carries out coring work
When industry, device is directly connect with upper drilling string or is connect by crossover sub with upper drilling string, and is passed through in drill string by well head
Chamber conveys downwards drilling fluid for removing landwaste and cooling coring bit 31；The active force of the coring bit 31 and ground interlayer
(bit pressure) is then realized by control ground hook load.
Specific embodiment described above is used for the range illustrated the present invention without limiting the present invention, the skill of any this field
Art personnel equivalent changes and modifications made under the premise of not departing from conceptions and principles of the invention, belong to guarantor of the invention
Protect range.
Claims (4)
1. a kind of deep-well coring device, mainly by upper housing (1), turbine wheel shaft (2), alignment bearing (3), turbine stator (4), turbine
Rotor (5), stator support sleeve (7), transmission shaft (8), upper bearing support group (9), interior adjusting set (10), is transferred at flow guiding connector (6)
Section set (11), transit joint (12), anti-lost end cap (13), bolt (14), middle shell (15), lower support bearing group (16), locking
Cap (17), end ring (18), tapered roller bearing (19), planet wheel case (20), pin shaft (21), planetary gear (22), cover board
(23), thrust bearing (24), mandrel connector (25), lower case (26), steel ball (27), coring tube (28), core pawl (29), core cylinder
Centralizer (30), coring bit (31) composition, it is characterised in that: the upper end of the upper housing (1) is connect with top rod, under
End is connect by screw thread with transit joint (12)；The turbine wheel shaft (2) is equipped with radial flow path, turbine wheel shaft (2) and upper housing (1)
Alignment bearing (3) are equipped between inner wall, turbine wheel shaft (2) is connect by screw thread with flow guiding connector (6)；The stator support sleeve (7) will
Turbine stator (4) is fixed in the inner wall of upper housing (1), and turbine rotor (5) is fixed in turbine wheel shaft by flow guiding connector (6)
(2) on, flow guiding connector (6) is equipped with radial flow path, and flow guiding connector (6) is connect by screw thread with transmission shaft (8)；The upper support shaft
The inner ring and outer ring for holding group (9) are fixed the outer wall in transmission shaft (8) and the inner wall of upper housing (1), interior adjusting set respectively
(10) it is respectively used to adjust the inner ring of bearing support group (9) and the tightness of outer ring, interior adjusting set with outer adjusting set (11)
(10) it is supported respectively by the end face of the step of transmission shaft (8) and transit joint (12) with outer adjusting set (11)；The anti-lost end cap
(13) upper end of middle shell (15) is fixed on by bolt (14), anti-lost end cap (13) is semi-annular shape and its inner ring is embedded in transition
The groove of connector (12)；Lower support bearing group (16) are equipped between the transit joint (12) and middle shell (15), lower support axis
The inner ring and outer ring for holding group (16) are fixed the outer wall in transit joint (12) and the inner wall of middle shell (15), anti-lost end respectively
Lid (13) and locking cap (17) are respectively used to compress inner ring and the outer ring of lower support bearing group (16)；The end ring (18) is logical
It crosses bolt (14) to be fixed on planet wheel case (20), end ring (18) is used to limit the axial position of tapered roller bearing (19)
It moves, the cover board (23) is fixed on planet wheel case (20) by bolt (14), is set between planet wheel case (20) and planetary gear (22)
There are pin shaft (21)；The middle shell (15) is connected through a screw thread with lower case (26), on mandrel connector (25) and lower case (26)
Thrust bearing (24) are equipped between the step at end, the middle section of mandrel connector (25) is equipped with radial flow path, mandrel connector (25) and coring
Cylinder (28) is connected through a screw thread, and is equipped with steel ball (27) in the upper end of coring tube (28)；The core pawl (29) and coring tube (28)
Lower end be connected through a screw thread；The core cylinder centralizer (30) and the lower end of coring tube (28) are connected through a screw thread, and are helped in core cylinder
The outside of positive device (30) is equipped with shaft orientation flowing channel；The coring bit (31) is connect by screw thread with lower case (26).
2. a kind of deep-well coring device according to claim 1, it is characterised in that: the outer diameter of the steel ball (27), which is greater than, to be taken
The internal diameter of core cylinder (28).
3. a kind of deep-well coring device according to claim 1, it is characterised in that: the core pawl (29) is equipped with back taper
Tooth move up core (32) can only.
4. a kind of operating method of deep-well coring device according to claim 1, it is characterised in that: the upper housing (1)
It is connect with top rod, after entering the coring device by the downward fluid of top rod, passes through the radial flow of turbine wheel shaft (2)
Road enters the stage of turbine being made of turbine stator (4) and turbine rotor (5)；Respectively due to turbine stator (4) and turbine rotor (5)
It is fixed on upper housing (1) and turbine wheel shaft (2), under action of a fluid, turbine rotor (5) high-speed rotation, and be further driven to
Turbine wheel shaft (2), flow guiding connector (6), transmission shaft (8) high-speed rotation；The turbine stator (4), stator support sleeve (7), upper bearing
The outer ring of bearing group (9), outer adjusting set (11) are compressed by transit joint (12) end；The turbine wheel shaft (2), alignment bearing
(3), turbine rotor (5), flow guiding connector (6), transmission shaft (8), upper bearing support group (9) inner ring weight and act on turbine
Hydraulic thrust on axis (2) and turbine rotor (5) by upper bearing support group (9) and is ultimately applied to the ends of transit joint (12)
Portion；The quantity of the anti-lost end cap (13) is 2, and its role is to prevent middle shell (15) and its lower part from transit joint
(12) it falls off；The end ring (18), tapered roller bearing (19), planet wheel case (20), pin shaft (21), planetary gear (22),
Cover board (23) collectively constitutes deceleration unit, the transmission shaft (8) of high-speed rotation shell (15) in driving after deceleration unit acts on
Slowly run, middle shell (15) is further driven to lower case (26) and coring bit (31) slowly runs；When not carrying out coring work
When industry, due to the effect of steel ball (27), the fluid into mandrel connector (25) can not be passed through by the center of coring tube (28), fluid
The annular space that is entered between coring tube (28) and lower case (26) by the radial flow path of mandrel connector (25) simultaneously flows to shaft bottom；When being taken
When core operation, the fluid into mandrel connector (25) is still entered between coring tube (28) and lower case (26) by its radial flow path
Annular space simultaneously flows to shaft bottom, and the core (32) drilled through by coring bit (31) subsequently enters core pawl (29), and core pawl is set on (29)
Some teeths make core (32) that can only move up and can not move down, during core (32) moves up, coring tube
(28) steel ball (27) is opened under the action of core (32) and by coring tube (28) gradually outlet by fluid in, so that by fluid
The internal space of the coring tube (28) occupied is gradually substituted by core (32)；It can be calculated and be taken according to the drilling depth of coring bit (31)
The coring device can be proposed well head, then successively after the core (32) for obtaining required length by the length of core (32)
Coring bit (31), core cylinder centralizer (30) and core pawl (29) are dismantled and take out core；The coring device, Ke Yizhi
It connects the transmission shaft (8) inside by coring device power is reached middle shell (15) and is reached coring bit (31), without as conventional
Drilling well equally rotates whole drill string, and avoidable deep-well torque is excessive and is broken drill string, therefore is suitable for the coring of deep-well.
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| CN201611180239.7A CN106761382B (en) | 2016-12-20 | 2016-12-20 | A kind of deep-well coring device and its operating method |
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| CN110500057A (en) * | 2019-07-22 | 2019-11-26 | 自然资源部第一海洋研究所 | A kind of two-tube rock core core drill of band inside spin |
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| DE3613265A1 (en) * | 1986-04-19 | 1987-10-22 | Christensen Inc Norton | CORE DRILLING TOOL FOR STONE DRILLING |
| CN202273623U (en) * | 2011-08-31 | 2012-06-13 | 李映华 | Large-diameter long semi-closed pipe drill withdrawing core drilling tool for deep hole complex stratum |
| CN202882822U (en) * | 2012-11-05 | 2013-04-17 | 唐山市金石超硬材料有限公司 | Ball clamping type rope coring drill assembly structure |
| CN203066857U (en) * | 2013-01-18 | 2013-07-17 | 河北省地矿局探矿技术研究院 | Drilling tool for clay layer drilling and coring |
| CN105221068A (en) * | 2015-11-10 | 2016-01-06 | 西南石油大学 | Percussion is utilized to improve the New Type of PDC Bit of heart portion efficiency of breaking rock |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110500057A (en) * | 2019-07-22 | 2019-11-26 | 自然资源部第一海洋研究所 | A kind of two-tube rock core core drill of band inside spin |
| CN110500057B (en) * | 2019-07-22 | 2022-02-01 | 自然资源部第一海洋研究所 | Core drilling tool with internal spiral double tubes |
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