CN111411896B - Drill bit for petroleum geological exploration - Google Patents
Drill bit for petroleum geological exploration Download PDFInfo
- Publication number
- CN111411896B CN111411896B CN202010221273.4A CN202010221273A CN111411896B CN 111411896 B CN111411896 B CN 111411896B CN 202010221273 A CN202010221273 A CN 202010221273A CN 111411896 B CN111411896 B CN 111411896B
- Authority
- CN
- China
- Prior art keywords
- coaxially
- fixed
- ring
- sleeve
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003208 petroleum Substances 0.000 title claims abstract description 28
- 238000005553 drilling Methods 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000009471 action Effects 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000002441 reversible effect Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- -1 alkane olefin Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- 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
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/34—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools of roller-cutter type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
Abstract
The invention relates to the field of petroleum mechanical equipment, in particular to a drill bit for petroleum geological exploration, which is arranged on a drill rod of a petroleum drilling machine and comprises a positioning fixer, an elastic abutting device, a supporting cylinder, a wall expander, a cutter, a sampler and a threaded sleeve, wherein the positioning fixer and the elastic abutting device are sequentially and coaxially arranged in the drill rod along the axial direction from a drill rod installation part; the coaxial setting of screw sleeve is in elasticity butt ware one side, the coaxial screw sleeve is twisted and is connect on the location fixer and one end butt on elasticity butt ware, expand the wall ware and all establish on the periphery outside the supporting cylinder along the axial, the cutter is along the perpendicular equipartition of axial another terminal surface at the supporting cylinder, the coaxial setting of sampler is inside the supporting cylinder, sampler feeding work portion and cutter rotation portion meshing, sampler discharge end and screw sleeve intercommunication, this drill bit can be with the drilling rod stable connection, and can effectively expand the wall, take a sample.
Description
Technical Field
The invention relates to the field of petroleum mechanical equipment, in particular to a drill bit for petroleum geological exploration.
Background
Petroleum is the foundation of modern industrial society, and is as large as aircraft carriers to automobiles and motorcycles, the engine of an internal combustion engine cannot be separated from fossil fuel petroleum, and the processed by-products of petroleum, such as alkane olefin products, also greatly enrich the living materials of people, and is the blood of modern industry.
Chinese patent CN201820499064.4 discloses a petroleum geological exploration drill bit, which can be connected with the drill rod of a petroleum drilling machine through the convex thread of a thread cylinder when being installed, and when in use, the drilling machine drives the petroleum geological exploration drill bit to select, and the drilling disk can be selected to open a hole on the ground. And when the drilling disc is worn, the bolt can be unscrewed, the drilling disc rotates in the mounting groove, the surface of the drilling disc which is not worn is rotated to the outside of the mounting groove, then the bolt is screwed to fix the drilling disc, and the surface which is not worn is rotated and replaced by a new surface which is not worn is drilled continuously.
The drill bit is too simple in structure.
Disclosure of Invention
The invention aims to solve the technical problem of providing a drill bit for petroleum geological exploration, and the technical scheme solves the problem of petroleum drilling.
In order to solve the technical problems, the invention provides the following technical scheme:
a drill bit for petroleum geological exploration is arranged on a drill rod of a petroleum drilling machine and comprises a positioning fixer, an elastic abutting device, a supporting cylinder, a wall expander, a cutter, a sampler and a threaded sleeve, wherein the positioning fixer and the elastic abutting device are sequentially and coaxially arranged in the drill rod along the axial direction from a drill rod installation part; the threaded sleeve is coaxially arranged on one side of the elastic butt connector, the threaded sleeve is coaxially screwed on the positioning fixing device, one end of the threaded sleeve 8, facing the elastic butt connector 3, is abutted against the elastic butt connector, the wall expanding device is axially arranged on the outer circumferential surface of the supporting cylinder, the cutting device is axially and vertically and uniformly distributed on the other end surface of the supporting cylinder, the sampler is coaxially arranged inside the supporting cylinder, the feeding working part of the sampler is meshed with the rotating part of the cutting device, and the discharge end of the sampler is communicated with the threaded sleeve.
Preferably, the drill rod comprises a first fixed cylinder and a second fixed cylinder, the first fixed cylinder is coaxially arranged at one end of the second fixed cylinder, the positioning fixer and the elastic abutting device are sequentially and coaxially arranged in the first fixed cylinder, the positioning fixer is in sliding fit with the first fixed cylinder, and the elastic abutting device is in elastic fit with one end of the second fixed cylinder; the outer circumference of the other end of the first fixing cylinder is uniformly provided with fixing lugs along the axial direction, and the first fixing cylinder is coaxially and fixedly connected with the supporting cylinder through the fixing lugs and fastening screws.
Preferably, sliding grooves are uniformly distributed on the inner wall of each fixing lug in the circumferential direction; the positioning fixer comprises a screw nut, a first sliding block and a first spring, the first sliding block is axially arranged on the outer circumferential surface of the screw nut, the screw nut is coaxially and slidably arranged in a first fixed cylinder, the first sliding block is in sliding fit with a sliding groove, the first spring is coaxially arranged in the first fixed cylinder, two ends of the first spring are respectively abutted to the side end of the first fixed cylinder and one end of the first sliding block, the other end of the first sliding block is abutted to one end of an elastic abutting device under the action of first spring elasticity, and in a working state, a threaded sleeve is coaxially screwed with the screw nut.
Preferably, first guide grooves are uniformly distributed in the second fixing cylinder along the axis; the elastic abutting device comprises a guide ring, a fixed ring, a second sliding block, a pin, a second spring and a fixed guide sleeve, wherein the guide ring is coaxially arranged at one end of the fixed ring, the guide ring and the fixed ring are coaxially and slidably arranged in a first fixed cylinder, an inner ring of one end of the guide ring, facing the positioning and fixing device, is provided with a chamfer, one end of the fixed guide sleeve is coaxially and fixedly connected with the inner wall of the fixed ring, the fixed guide sleeve is inserted in a support cylinder, the second sliding blocks are axially and uniformly distributed on the outer circumferential surface of the fixed ring, the pin is vertically arranged at the other end of the fixed ring, a pin cap end is coaxially and slidably matched with a second fixed cylinder, the second spring is coaxially arranged in a first guide groove, two ends of the second spring are respectively abutted against one end of the pin cap end and one end of the first guide groove, the cap end of the pin is abutted against the other end of the first guide groove under, the cap end is separated from one end of the first guide groove under the action of the elastic force.
Preferably, grooves are uniformly distributed on the outer circumferential surface of the support cylinder along the axial direction, guide columns are arranged at the bottom end in the grooves at equal intervals along the radial direction, and first stop blocks are further arranged on two sides of the top end in the grooves; the wall expander comprises a trapezoidal sliding block, a third spring and a round rivet, wherein second guide grooves are formed in the bottom end of the trapezoidal sliding block at equal intervals along the radial direction, second stop blocks are further arranged on two sides of the bottom end of the trapezoidal sliding block, the trapezoidal sliding block is limited to be arranged inside a groove in a sliding mode through the second stop blocks, the second guide grooves are in sliding fit with guide columns, the third spring is coaxially sleeved on the second guide grooves, two ends of the third spring are abutted to the bottom end of the trapezoidal sliding block and the bottom end of the groove inside the groove respectively, the top end of the second stop block is abutted to the bottom end of the first stop block, and the round rivet is arranged on the top end face of the trapezoidal.
Preferably, a thread ring is coaxially arranged on the outer circumference of one end of the supporting cylinder.
Preferably, the cutter comprises a bit leg, a cutting wheel, a self-locking fixing seat and a fixing screw, the bit leg is vertically arranged at one end of the supporting cylinder along the axial direction, the self-locking fixing seat is fixedly arranged on the bit leg through the fixing screw, and the cutting wheel is coaxially and rotatably arranged on the inner side of the self-locking fixing seat.
Preferably, thread strips are arranged on the outer sides of the bit legs at equal intervals.
Preferably, raised lines are uniformly distributed at the outer end of the fixing hole at the inner side of the bit leg along the axial direction; the self-locking type fixing seat comprises a rotating sleeve and a first limiting ring, the first limiting ring is coaxially arranged at one end of the rotating sleeve, grooves embedded with the raised bars are evenly distributed at the outer end of a fixing hole of the first limiting ring positioned on the inner side along the axial direction, and the grooves and the raised bars are embedded and fixed on the tooth palm through fixing screws.
Preferably, the sampler comprises a fixing sleeve, a second limiting ring, a bearing, a hollow rotator, a fixing sleeve, a rotating roller and a one-way thread piece, wherein the fixing sleeve is coaxially and fixedly arranged at the cutting end of the supporting cylinder, the fixing sleeve is coaxially arranged at one end of the fixing sleeve, an outer ring of the bearing is coaxially and fixedly connected with the inner circumferential surface of the bit leg, the hollow rotator is coaxially and fixedly connected with the inner ring of the bearing, one end of the hollow rotator, which faces the cutter, is provided with a driving tooth, the driving tooth is meshed with the cutting wheel, the fixing sleeve is coaxially and fixedly connected with the other end of the hollow rotator, the fixing sleeve is coaxially and rotatably connected with the inner circumferential surface of the supporting cylinder, the one-way thread piece is coaxially arranged on the outer circumferential surface of the.
Compared with the prior art, the invention has the beneficial effects that:
when the drill rod positioning device works, a worker needs to fixedly and coaxially connect the support cylinder and the drill rod, so that the threaded sleeve is coaxially inserted into the drill rod, the drill rod is rotated to enable the threaded sleeve to be coaxially screwed into the positioning fixer, when the support cylinder is abutted against the end face of the drill rod, the threaded sleeve is coaxially abutted against the elastic abutting device, and the threaded sleeve is stably fastened in the drill rod under the elastic action of the elastic abutting device, so that the drill rod is prevented from falling off; in the exploration process, a drill bit is in contact with the rock, so that the rock is crushed through cutting, stamping and other actions, but as the depth of the drill bit is increased, the well wall at the upper end cannot be effectively expanded, the entering and normal operation of a subsequent mechanism are easily influenced, and therefore, a special wall-expanding drill bit is needed, so that the whole exploration process is complicated and low in exploration efficiency, the front-end cutter can expand the well wall after drilling through the wall expander, and the rear-end wall expander can expand the well wall, and when the rock stratum is too hard and the wall expander cannot effectively expand the wall, the pressure generated by the well wall on the wall expander can enable the wall expander to retract into the supporting cylinder under the elastic action, so that self protection is realized, and the service life of the wall expander is prolonged on the basis of effective wall expansion; in current oil exploration technical field, do not can be when the well drilling, realize the drilling simultaneously and creep into, return the exploration drill bit of native sample, and the coaxial setting of sampler is inside a supporting cylinder, sampler feeding work portion and cutter rotating part meshing, sampler discharge end and threaded sleeve intercommunication, when making the cutter forward rotation, sampler reverse rotation does not get the material, can avoid the sample to get into threaded sleeve, when cutter reverse rotation, the material is got in sampler forward rotation, thereby make inside the sample passes through sampler feed end entering threaded sleeve, thereby take the sample out when making the drill bit return.
The drill bit can be stably connected with a drill rod, and can effectively expand the wall and take samples.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a first side view of the present invention;
FIG. 3 is a second side view of the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
FIG. 5 is a sectional view taken along line B-B of FIG. 3;
FIG. 6 is an enlarged view of a portion of FIG. 5 at C;
FIG. 7 is an enlarged view of a portion of FIG. 5 at D;
FIG. 8 is an enlarged view of a portion of FIG. 5 at E;
FIG. 9 is a self-locking type fixing seat of the present invention;
fig. 10 is a partial enlarged view of fig. 5 at F.
The reference numbers in the figures are:
1. a drill stem; 1a, a first fixed cylinder; 1a1, fixing ear; 1a2, sliding groove; 1b, a second fixed cylinder; 1b1, first guide groove;
2. positioning the fixator; 2a, a screw nut; 2b, a first slide block; 2c, a first spring;
3. an elastic abutting device; 3a, a guide ring; 3a1, chamfering; 3b, a fixed ring; 3c, a second slide block; 3d, pins; 3e, a second spring; 3f, fixing the guide sleeve;
4. a support cylinder; 4a, a groove; 4a1, guide post; 4a2, a first stop; 4b, a thread ring;
5. a wall expander; 5a, a ladder-shaped slide block; 5a1, second guide groove; 5a2, second stop; 5b, a third spring; 5c, round rivets;
6. a cutter; 6a, a palm of teeth; 6a1, a threaded bar; 6a2, ribs; 6b, a cutting wheel; 6c, a self-locking fixed seat; 6c1, rotating sleeve; 6c2, a first spacing collar; 6d, fixing screws;
7. a sampler; 7a, a fixing sleeve; 7b, a second limiting ring; 7c, a bearing; 7d, a hollow rotator; 7d1, drive teeth; 7e, fixing the sleeve; 7f, rotating the roller; 7g of unidirectional thread sheet;
8. a threaded sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 10, the drill bit for petroleum geological exploration is arranged on a drill rod 1 of a petroleum drilling machine and comprises a positioning fixer 2, an elastic abutting device 3, a supporting cylinder 4, a wall expanding device 5, a cutter 6, a sampler 7 and a threaded sleeve 8, wherein the positioning fixer 2 and the elastic abutting device 3 are sequentially and coaxially arranged in the drill rod 1 along the axial direction from the installation part of the drill rod 1; the threaded sleeve 8 is coaxially arranged on one side of the elastic butt connector 3, the threaded sleeve 8 is coaxially screwed on the positioning fixer 2, one end of the threaded sleeve 8, facing the elastic butt connector 3, is abutted to the elastic butt connector 3, the wall expander 5 is axially arranged on the outer circumferential surface of the supporting cylinder 4, the cutters 6 are axially and vertically and uniformly distributed on the other end surface of the supporting cylinder 4, the sampler 7 is coaxially arranged inside the supporting cylinder 4, a feeding working part of the sampler 7 is meshed with a rotating part of the cutters 6, and a discharging end of the sampler 7 is communicated with the threaded sleeve 8.
When the drill rod supporting device works, a worker needs to fixedly connect the supporting cylinder 4 and the drill rod 1 coaxially, so that the threaded sleeve 8 is coaxially inserted into the drill rod 1, the drill rod 1 is rotated to enable the threaded sleeve 8 to be coaxially screwed into the positioning fixer 2, when the supporting cylinder 4 abuts against the end face of the drill rod 1, the threaded sleeve 8 is coaxially abutted against the elastic abutting device 3, the threaded sleeve 8 is stably fastened in the drill rod 1 under the elastic action of the elastic abutting device 3, and the drill rod 1 is prevented from falling off;
in the exploration process, a drill bit is in contact with the rock, so that the rock is crushed through cutting, stamping and the like, but as the depth of the drill bit is increased, the well wall at the upper end cannot be effectively expanded, the entering and normal operation of a subsequent mechanism are easily influenced, and therefore a special wall-expanding drill bit is needed, so that the whole exploration process is complicated and low in exploration efficiency, the front-end cutter 6 can be used for expanding the well wall after drilling through the wall expander 5, and when the rock stratum is too hard and the wall expander 5 cannot effectively expand the wall, the pressure generated by the well wall to the wall expander 5 can enable the wall expander 5 to retract into the supporting cylinder 4 under the elastic action, so that self protection is realized, and the service life of the wall expander 5 is prolonged on the basis of effective wall expansion;
in current oil exploration technical field, do not can be when the well drilling, realize the drilling simultaneously and creep into, the exploration drill bit of return soil sample, and 7 coaxial settings of sampler are inside supporting cylinder 4, 7 feeding work portions of sampler mesh with 6 rotating parts of cutter, 7 discharge end of sampler and threaded sleeve 8 intercommunication, when making 6 forward rotations of cutter, 7 backward rotations of sampler do not get the material, can avoid the sample to get into threaded sleeve 8, when 6 reverse rotations of cutter, 7 forward rotations of sampler are got the material, thereby make the sample pass through 7 feed end of sampler and get into threaded sleeve 8 inside, thereby take the sample out when making the drill bit return.
The drill rod 1 comprises a first fixed cylinder 1a and a second fixed cylinder 1b, the first fixed cylinder 1a is coaxially arranged at one end of the second fixed cylinder 1b, a positioning fixer 2 and an elastic butting device 3 are sequentially and coaxially arranged in the first fixed cylinder 1a, the positioning fixer 2 is in sliding fit with the first fixed cylinder 1a, and the elastic butting device 3 is in elastic fit with one end of the second fixed cylinder 1 b; the outer circumference of the other end of the first fixing cylinder 1a is uniformly provided with fixing lugs 1a1 along the axial direction, and the first fixing cylinder 1a is coaxially and fixedly connected with the supporting cylinder 4 through the fixing lugs 1a1 and fastening screws.
The first fixed cylinder 1a is coaxially arranged at one end of the second fixed cylinder 1b, the positioning fixer 2 and the elastic butting device 3 are sequentially and coaxially arranged in the first fixed cylinder 1a, the positioning fixer 2 is in sliding fit with the first fixed cylinder 1a, and the elastic butting device 3 is in elastic fit with one end of the second fixed cylinder 1 b; fixing lugs 1a1 are uniformly distributed on the outer circumferential surface of the other end of the first fixing cylinder 1a along the axial direction, the first fixing cylinder 1a is coaxially and fixedly connected with the supporting cylinder 4 through fixing lugs 1a1 and fastening screws, the first fixing cylinder 1a can be fixedly connected with the supporting cylinder 4 through the fixing lugs 1a1, therefore, the drill rod 1 and the drill bit are prevented from being separated in the drilling process, and the first fixing cylinder 1a and the second fixing cylinder 1b are used for installing the positioning fixator 2 and the elastic butting device 3.
Sliding grooves 1a2 are uniformly distributed on the circumference of the inner wall of the fixing lug 1a 1; the positioning fixer 2 comprises a screw nut 2a, a first sliding block 2b and a first spring 2c, the first sliding block 2b is axially arranged on the outer circumferential surface of the screw nut 2a, the screw nut 2a is coaxially and slidably arranged in a first fixing barrel 1a, the first sliding block 2b is in sliding fit with a sliding groove 1a2, the first spring 2c is coaxially arranged in the first fixing barrel 1a, two ends of the first spring 2c are respectively abutted against the side end of the first fixing barrel 1a and one end of the first sliding block 2b, the other end of the first sliding block 2b is abutted against one end of an elastic abutting device 3 under the elastic force action of the first spring 2c, and in a working state, a threaded sleeve 8 is coaxially screwed with the screw nut 2 a.
The inner wall of the fixing lug 1a1 is circumferentially and uniformly provided with sliding grooves 1a2, the first slide block 2b is axially arranged on the outer circumferential surface of the screw nut 2a, the screw nut 2a is coaxially and slidably arranged in the first fixing cylinder 1a, the first slide block 2b is in sliding fit with the sliding groove 1a2, the first spring 2c is coaxially arranged in the first fixing cylinder 1a, two ends of the first spring 2c are respectively abutted against the side end of the first fixing cylinder 1a and one end of the first slide block 2b, the other end of the first slide block 2b is abutted against one end of the elastic abutting device 3 under the elastic force of the first spring 2c, the threaded sleeve 8 is rotated in the screw nut 2a by rotating the threaded sleeve 8 in the drill rod 1, so that the screw nut 2a moves towards the direction of the drill bit under the restriction of the first slide block 2b, when the end surface of the first fixing cylinder 1a is abutted against the end surface of the supporting cylinder 4, one end of the threaded sleeve 8 is abutted against the elastic abutting device 3, thereby, the structure is more stable through the first spring 2c and the elastic butting device 3, and the vibration generated in the exploration process is reduced.
First guide grooves 1b1 are uniformly distributed in the second fixed cylinder 1b along the axis; the elastic abutting device 3 comprises a guide ring 3a, a fixed ring 3b, a second sliding block 3c, a pin 3d, a second spring 3e and a fixed guide sleeve 3f, wherein the guide ring 3a is coaxially arranged at one end of the fixed ring 3b, the guide ring 3a and the fixed ring 3b are coaxially and slidably arranged in a first fixed cylinder 1a, an inner ring at one end of the guide ring 3a facing the positioning fixer 2 is provided with a chamfer 3a1, one end of the fixed guide sleeve 3f is coaxially and fixedly connected with the inner wall of the fixed ring 3b, the fixed guide sleeve 3f is inserted in a support cylinder 4, the second sliding block 3c is axially and uniformly distributed on the outer circumferential surface of the fixed ring 3b, the pin 3d is vertically arranged at the other end of the fixed ring 3b, the cap end of the pin 3d is coaxially and slidably matched with the second fixed cylinder 1b, the second spring 3e is coaxially arranged in a first guide groove 1b1, and two ends of the second spring 3e abut against the cap end of the pin 3d and one end in a first guide groove, the cap end of the pin 3d abuts against the other end inside the first guide groove 1b1 under the action of elastic force, the threaded sleeve 8 abuts against one end of the fixed ring 3b in an operating state, and the cap end of the pin 3d is separated from one end inside the first guide groove 1b1 under the action of elastic force.
A first guide groove 1b1 is uniformly distributed in the second fixed cylinder 1b along the axis, a guide ring 3a and a fixed ring 3b are coaxially and slidably arranged in the first fixed cylinder 1a, an inner ring of one end of the guide ring 3a facing the positioning fixer 2 is provided with a chamfer 3a1, one end of a fixed guide sleeve 3f is coaxially and fixedly connected with the inner wall of the fixed ring 3b, the fixed guide sleeve 3f is inserted in the supporting cylinder 4, second sliding blocks 3c are axially and uniformly distributed on the outer circumferential surface of the fixed ring 3b, a pin 3d is vertically arranged at the other end of the fixed ring 3b, the cap end of the pin 3d is coaxially and slidably matched with the second fixed cylinder 1b, a second spring 3e is coaxially arranged in the first guide groove 1b1, two ends of the second spring 3e are respectively abutted against the cap end of the pin 3d and one end of the first guide groove 1b1, the cap end of the pin 3d is abutted against the other end of the first guide groove 1b1 under the action of elasticity, 8 butt of threaded sleeve under operating condition is in retainer plate 3b one end, the cap end breaks away from the inside one end of first guide way 1b1 under the spring action of pin 3d, threaded sleeve 8 is coaxial to be screwed up 0 inside, thereby make 8 one end butts of threaded sleeve on retainer plate 3b, thereby make threaded sleeve 8 and fixed guide sleeve 3f intercommunication, thereby be convenient for transport the sample, make pin 3d butt in first guide way 1b1 through second spring 3e, make threaded sleeve 8 butt under the spring action of second spring 3e on retainer plate 3b, chamfer 3a1 is convenient for threaded sleeve 8 can be pegged graft in guide way 3 a.
Grooves 4a are uniformly distributed on the outer circumferential surface of the support cylinder 4 along the axial direction, guide posts 4a1 are arranged at the bottom end in the grooves 4a at equal intervals along the radial direction, and first stop blocks 4a2 are further arranged on two sides of the top end in the grooves 4 a; the wall expander 5 comprises a ladder-shaped slider 5a, a third spring 5b and a round rivet 5c, wherein the bottom end of the ladder-shaped slider 5a is provided with second guide grooves 5a1 at equal intervals along the radial direction, two sides of the bottom end of the ladder-shaped slider 5a are also provided with second stop blocks 5a2, the ladder-shaped slider 5a is limited to be arranged in the groove 4a in a sliding mode through the second stop blocks 5a2, the second guide grooves 5a1 are in sliding fit with the guide posts 4a1, the third spring 5b is coaxially sleeved on the second guide grooves 5a1, two ends of the third spring 5b are respectively abutted against the bottom end of the ladder-shaped slider 5a and the bottom end of the groove 4a, the top end of the second stop block 5a2 is abutted against the bottom end of the first stop block 4a2, and the round rivet 5c is arranged on the top end face of the.
Grooves 4a are uniformly distributed on the outer circumferential surface of the supporting cylinder 4 along the axial direction, the bottom end in the groove 4a is provided with guide posts 4a1 at equal intervals along the radial direction, two sides of the top end in the groove 4a are also provided with first stop blocks 4a2, the bottom end of the trapezoidal sliding block 5a is provided with second guide grooves 5a1 at equal intervals along the radial direction, two sides of the bottom end of the trapezoidal sliding block 5a are also provided with second stop blocks 5a2, the second stop blocks 5a2 are limited in the groove 4a in a sliding manner through the second stop blocks 5a2, the second guide grooves 5a1 are matched with the guide posts 4a1 in a sliding manner, a third spring 5b is coaxially sleeved on the second guide grooves 5a1, two ends of the third spring 5b are respectively abutted against the bottom end of the trapezoidal sliding block 5a and the bottom end in the groove 4a, the top end of the second stop blocks 5a2 is abutted against the bottom end of the first stop blocks 4a2, a circular rivet 5c is arranged on the top end surface of the trapezoidal sliding block 5a, and the, so that the wall is expanded by the round rivet 5c, the groove 4a and the second guide groove 5a1 are used for guiding the trapezoidal slider 5a, so that when a stronger wall of the well is encountered, the trapezoidal slider 5a retracts into the groove 4a under the elastic force of the third spring 5b, thereby preventing the wall of the well from damaging the wall expander 5, and the first stopper 4a2 and the second stopper 5a2 are used for preventing the wall expander 5 from disengaging from the groove 4 a.
A thread ring 4b is coaxially arranged on the outer circumference of one end of the supporting cylinder 4.
The outer circumference of one end of the supporting cylinder 4 is coaxially provided with a thread ring 4b, and the thread ring 4b is convenient for the drill bit to explore and drill.
The cutter 6 comprises a bit leg 6a, a cutting wheel 6b, a self-locking fixed seat 6c and a fixing screw 6d, wherein the bit leg 6a is vertically arranged at one end of the supporting cylinder 4 along the axial direction, the self-locking fixed seat 6c is fixedly arranged on the bit leg 6a through the fixing screw 6d, and the cutting wheel 6b is coaxially and rotatably arranged on the inner side of the self-locking fixed seat 6 c.
The bit leg 6a is vertically arranged at one end of the supporting cylinder 4 along the axial direction, the self-locking type fixing seat 6c is fixedly arranged on the bit leg 6a through a fixing screw 6d, and the cutting wheel 6b is coaxially and rotatably arranged on the inner side of the self-locking type fixing seat 6c, so that the cutter 6 is rotated through the rotating drill rod 1, the bit leg 6a is rotated at a high speed, the self-locking type fixing seat 6c is rotated on the cutting wheel 6b, and the drilling speed is higher.
Thread strips 6a1 are arranged on the outer side of the bit leg 6a at equal intervals.
Thread strips 6a1 are arranged on the outer side of the bit leg 6a at equal intervals, and the thread strips 6a1 are beneficial to high-speed drilling of the bit leg 6 a.
Convex strips 6a2 are uniformly distributed at the outer end of the inner side fixing hole of the bit leg 6a along the axial direction; the self-locking type fixing seat 6c comprises a rotating sleeve 6c1 and a first limiting ring 6c2, the first limiting ring 6c2 is coaxially arranged at one end of the rotating sleeve 6c1, grooves embedded with the convex strips 6a2 are uniformly distributed at the outer end of a fixing hole of the first limiting ring 6c2 positioned on the inner side along the axial direction, and the grooves and the convex strips 6a2 are embedded and fixed on the bit leg 6a through fixing screws 6 d.
Convex strips 6a2 are uniformly distributed at the outer end of the fixing hole at the inner side of the bit leg 6a along the axial direction, the first limiting ring 6c2 is coaxially arranged at one end of the rotating sleeve 6c1, grooves embedded with the convex strips 6a2 are uniformly distributed at the outer end of the fixing hole of the first limiting ring 6c2 positioned at the inner side along the axial direction, the grooves and the convex strips 6a2 are embedded and fixed on the bit leg 6a through fixing screws 6d, so that when the first limiting ring 6c2 is fixedly arranged on the 6as0, the convex strips 6a2 are embedded in the grooves, when the cutting wheel 6b rotates, the self-locking fixing seat 6c can be locked without being influenced by rotation, and the cutting wheel 6b is easy to replace.
The sampler 7 comprises a fixed sleeve 7a, a second spacing ring 7b and a bearing 7c, the cutting device comprises a hollow rotator 7d, a fixed sleeve 7e, a rotating roller 7f and a one-way thread piece 7g, wherein the fixed sleeve 7a is coaxially and fixedly arranged at the cutting end of the supporting cylinder 4, the fixed sleeve 7a is coaxially arranged at one end of the fixed sleeve 7a, the outer ring of a bearing 7c is coaxially and fixedly connected with the inner circumference of a bit leg 6a, the hollow rotator 7d is coaxially and fixedly connected with the inner ring of the bearing 7c, one end of the hollow rotator 7d, facing the cutter 6, is provided with a driving tooth 7d1, the driving tooth 7d1 is meshed with a cutting wheel 6b, the fixed sleeve 7e is coaxially and fixedly connected with the other end of the hollow rotator 7d, the fixed sleeve 7e is coaxially and fixedly connected with the inner circumference of the supporting cylinder 4, the one-way thread piece 7g is coaxially and rotatably connected with the inner circumference of the rotating roller 7f, and the outer ring of.
The fixed sleeve 7a is coaxially and fixedly arranged at the cutting end of the supporting cylinder 4, the fixed sleeve 7a is coaxially arranged at one end of the fixed sleeve 7a, the outer ring of the bearing 7c is coaxially and fixedly connected with the inner circumferential surface of the bit leg 6a, the hollow rotator 7d is coaxially and fixedly connected with the inner ring of the bearing 7c, one end of the hollow rotator 7d, which faces the cutter 6, is provided with a driving tooth 7d1, the driving tooth 7d1 is engaged with the cutting wheel 6b, the fixed sleeve 7e is coaxially and fixedly connected with the other end of the hollow rotator 7d, the fixed sleeve 7e is coaxially and rotatably connected with the inner circumferential surface of the supporting cylinder 4, a one-way thread piece 7g is coaxially arranged on the outer circumferential surface of the rotating roller 7f, the outer ring of the one-way thread piece 7g is coaxially and fixedly connected with the hollow rotator 7d and the fixed sleeve 7e, when the cutting wheel 6b rotates on the bit leg 6a, the hollow rotator 7d, when the drill rod 1 rotates forwards for drilling, the unidirectional thread pieces 7g rotate reversely due to the meshing effect, so that a soil sample cannot be sent to the inside of the threaded sleeve 8 by the unidirectional thread pieces 7 g; when the positioning fixture 2 is rotated in the reverse direction, the one-way thread pieces 7g are rotated in the forward direction, so that the one-way thread pieces 7g are rotated to allow the soil sample to be sent to the inside of the threaded sleeve 8.
The working principle of the invention is as follows:
when the drill rod supporting device works, a worker needs to fixedly connect the supporting cylinder 4 and the drill rod 1 coaxially, so that the threaded sleeve 8 is coaxially inserted into the drill rod 1, the drill rod 1 is rotated to enable the threaded sleeve 8 to be coaxially screwed into the positioning fixer 2, when the supporting cylinder 4 abuts against the end face of the drill rod 1, the threaded sleeve 8 is coaxially abutted against the elastic abutting device 3, the threaded sleeve 8 is stably fastened in the drill rod 1 under the elastic action of the elastic abutting device 3, and the drill rod 1 is prevented from falling off; in the exploration process, a drill bit is in contact with the rock, so that the rock is crushed through cutting, stamping and the like, but as the depth of the drill bit is increased, the well wall at the upper end cannot be effectively expanded, the entering and normal operation of a subsequent mechanism are easily influenced, and therefore a special wall-expanding drill bit is needed, so that the whole exploration process is complicated and low in exploration efficiency, the front-end cutter 6 can be used for expanding the well wall after drilling through the wall expander 5, and when the rock stratum is too hard and the wall expander 5 cannot effectively expand the wall, the pressure generated by the well wall to the wall expander 5 can enable the wall expander 5 to retract into the supporting cylinder 4 under the elastic action, so that self protection is realized, and the service life of the wall expander 5 is prolonged on the basis of effective wall expansion; in current oil exploration technical field, do not can be when the well drilling, realize the drilling simultaneously and creep into, the exploration drill bit of return soil sample, and 7 coaxial settings of sampler are inside supporting cylinder 4, 7 feeding work portions of sampler mesh with 6 rotating parts of cutter, 7 discharge end of sampler and threaded sleeve 8 intercommunication, when making 6 forward rotations of cutter, 7 backward rotations of sampler do not get the material, can avoid the sample to get into threaded sleeve 8, when 6 reverse rotations of cutter, 7 forward rotations of sampler are got the material, thereby make the sample pass through 7 feed end of sampler and get into threaded sleeve 8 inside, thereby take the sample out when making the drill bit return.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A drill bit for petroleum geological exploration is arranged on a drill rod (1) of a petroleum drilling machine and is characterized by comprising a positioning fixer (2), an elastic abutting device (3), a supporting cylinder (4), a wall expanding device (5), a cutter (6), a sampler (7) and a threaded sleeve (8), wherein the positioning fixer (2) and the elastic abutting device (3) are sequentially and coaxially arranged inside the drill rod (1) along the axial direction from an installation part of the drill rod (1); the threaded sleeve (8) is coaxially arranged on one side of the elastic butting device (3), the threaded sleeve (8) is coaxially screwed on the positioning fixing device (2), one end, facing the elastic butting device (3), of the threaded sleeve (8) is butted on the elastic butting device (3), the wall expanding devices (5) are axially arranged on the outer circumferential surface of the supporting cylinder (4), the cutters (6) are axially and vertically and uniformly distributed on the other end surface of the supporting cylinder (4), the sampler (7) is coaxially arranged in the supporting cylinder (4), the feeding working part of the sampler (7) is meshed with the rotating part of the cutter (6), and the discharging end of the sampler (7) is communicated with the threaded sleeve (8);
grooves (4a) are uniformly distributed on the outer circumferential surface of the supporting cylinder (4) along the axial direction, guide posts (4a1) are arranged at the bottom end in the grooves (4a) at equal intervals along the radial direction, and first stop blocks (4a2) are further arranged on two sides of the top end in the grooves (4 a); the wall expander (5) comprises a ladder-shaped slide block (5a), the bottom end of the ladder-shaped sliding block (5a) is provided with second guide grooves (5a1) at equal intervals along the radial direction, two sides of the bottom end of the ladder-shaped sliding block (5a) are further provided with second stop blocks (5a2), the ladder-shaped sliding block (5a) is limited to be arranged in the groove (4a) in a sliding mode through the second stop blocks (5a2), the second guide groove (5a1) is matched with the guide column (4a1) in a sliding mode, the third spring (5b) is coaxially sleeved on the second guide groove (5a1), two ends of the third spring (5b) are abutted to the bottom end of the ladder-shaped sliding block (5a) and the bottom end of the groove (4a) in the sliding mode, the top end of the second stop block (5a2) is abutted to the bottom end of the first stop block (4a2), and the round rivet (5c) is arranged on the top end face of the ladder-shaped sliding block (5 a).
2. The drill bit for petroleum geological exploration according to claim 1, characterized in that the drill rod (1) comprises a first fixed cylinder (1a) and a second fixed cylinder (1b), the first fixed cylinder (1a) is coaxially arranged at one end of the second fixed cylinder (1b), a positioning fixer (2) and an elastic abutting device (3) are sequentially and coaxially arranged in the first fixed cylinder (1a), the positioning fixer (2) is in sliding fit with the first fixed cylinder (1a), and the elastic abutting device (3) is in elastic fit with one end of the second fixed cylinder (1 b); fixing lugs (1a1) are uniformly distributed on the outer circumferential surface of the other end of the first fixing cylinder (1a) along the axial direction, and the first fixing cylinder (1a) is coaxially and fixedly connected with the supporting cylinder (4) through the fixing lugs (1a1) and fastening screws.
3. The drill bit for petroleum geological exploration according to claim 2, characterized in that the inner wall of the fixing lug (1a1) is circumferentially and uniformly provided with sliding grooves (1a 2); the positioning fixer (2) comprises a screw rod nut (2a), a first sliding block (2b) and a first spring (2c), the first sliding block (2b) is axially arranged on the outer circumferential surface of the screw rod nut (2a), the screw rod nut (2a) is coaxially and slidably arranged in a first fixed cylinder (1a), the first sliding block (2b) is in sliding fit with a sliding groove (1a2), the first spring (2c) is coaxially arranged in the first fixed cylinder (1a), two ends of the first spring (2c) are respectively abutted against the side end of the first fixed cylinder (1a) and one end of the first sliding block (2b), the other end of the first sliding block (2b) is abutted against one end of the elastic abutting device (3) under the elastic action of the first spring (2c), and in a working state, the threaded sleeve (8) is coaxially screwed with the screw rod nut (2 a).
4. The drill bit for petroleum geological exploration, as set forth in claim 2, characterized in that the second fixed cylinder (1b) has first guide grooves (1b1) uniformly distributed therein along the axis; the elastic butting device (3) comprises a guide ring (3a), a fixed ring (3b), a second sliding block (3c), a pin (3d), a second spring (3e) and a fixed guide sleeve (3f), wherein the guide ring (3a) is coaxially arranged at one end of the fixed ring (3b), the guide ring (3a) and the fixed ring (3b) are coaxially and slidably arranged in the first fixed cylinder (1a), a chamfer (3a1) is arranged at the inner ring of one end, facing the positioning fixer (2), of the guide ring (3a), one end of the fixed guide sleeve (3f) is coaxially and fixedly connected with the inner wall of the fixed ring (3b), the fixed guide sleeve (3f) is inserted in the supporting cylinder (4), the second sliding blocks (3c) are uniformly distributed on the outer circumferential surface of the fixed ring (3b) along the axial direction, the pin (3d) is vertically arranged at the other end of the fixed ring (3b), and the cap end of the pin (3d) is coaxially and slidably matched with the second fixed cylinder (1b), the second spring (3e) is coaxially arranged in the first guide groove (1b1), two ends of the second spring (3e) are respectively abutted to the cap end of the pin (3d) and one end in the first guide groove (1b1), the cap end of the pin (3d) is abutted to the other end in the first guide groove (1b1) under the action of elastic force, the threaded sleeve (8) is abutted to one end of the fixing ring (3b) in a working state, and the cap end of the pin (3d) is separated from one end in the first guide groove (1b1) under the action of the elastic force.
5. The drill bit for petroleum geological exploration according to claim 1, characterized in that a threaded ring (4b) is coaxially arranged on the outer circumference of one end of the supporting cylinder (4).
6. The drill bit for petroleum geological exploration according to claim 1, characterized in that the cutter (6) comprises a bit leg (6a), a cutting wheel (6b), a self-locking fixing seat (6c) and a fixing screw (6d), the bit leg (6a) is vertically arranged at one end of the supporting cylinder (4) along the axial direction, the self-locking fixing seat (6c) is fixedly arranged on the bit leg (6a) through the fixing screw (6d), and the cutting wheel (6b) is coaxially and rotatably arranged on the inner side of the self-locking fixing seat (6 c).
7. Drill bit for oil and geological exploration, according to claim 6, characterized in that the thread strips (6a1) are equally spaced outside the bit leg (6 a).
8. The drill bit for petroleum geological exploration according to claim 6, characterized in that convex strips (6a2) are uniformly distributed at the outer end of the inner fixing hole of the bit leg (6a) along the axial direction; the self-locking type fixing seat (6c) comprises a rotating sleeve (6c1) and a first limiting ring (6c2), the first limiting ring (6c2) is coaxially arranged at one end of the rotating sleeve (6c1), grooves embedded with the convex strips (6a2) are uniformly distributed at the outer end of a fixing hole of the first limiting ring (6c2) located on the inner side in the axial direction, and the grooves and the convex strips (6a2) are embedded and fixed on the bit leg (6a) through fixing screws (6 d).
9. The drill bit for petroleum geological exploration according to claim 1, characterized in that the sampler (7) comprises a fixed sleeve (7a), a second limit ring (7b), a bearing (7c), a hollow rotator (7d), a fixed sleeve (7e), a rotating roller (7f) and a one-way thread piece (7g), the fixed sleeve (7a) is coaxially and fixedly arranged at the cutting end of the supporting cylinder (4), the fixed sleeve (7a) is coaxially arranged at one end of the fixed sleeve (7a), the outer ring of the bearing (7c) is coaxially and fixedly connected with the inner circumferential surface of the bit leg (6a), the hollow rotator (7d) is coaxially and fixedly connected with the inner ring of the bearing (7c), one end of the hollow rotator (7d) facing the cutter (6) is provided with a driving tooth (7d1), the driving tooth (7d1) is meshed with the cutting wheel (6b), the fixed sleeve (7e) is coaxially and fixedly connected with the other end of the hollow rotator (7d), the fixed sleeve (7e) and the inner circumferential surface of the supporting cylinder (4) are coaxially connected with a one-way thread piece (7g) in a rolling way and are coaxially arranged on the outer circumferential surface of the rotating roller (7f), and the outer ring of the one-way thread piece (7g) is coaxially and fixedly connected with the hollow rotator (7d) and the fixed sleeve (7 e).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010221273.4A CN111411896B (en) | 2020-03-26 | 2020-03-26 | Drill bit for petroleum geological exploration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010221273.4A CN111411896B (en) | 2020-03-26 | 2020-03-26 | Drill bit for petroleum geological exploration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111411896A CN111411896A (en) | 2020-07-14 |
| CN111411896B true CN111411896B (en) | 2021-06-25 |
Family
ID=71489249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010221273.4A Expired - Fee Related CN111411896B (en) | 2020-03-26 | 2020-03-26 | Drill bit for petroleum geological exploration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111411896B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412374B (en) * | 2020-11-18 | 2022-06-10 | 重庆市二零五勘测设计有限公司 | Geological exploration system and construction method thereof |
| CN112593881B (en) * | 2020-11-30 | 2021-10-26 | 中国地质大学（北京） | Multifunctional shale geological exploration drill bit and working method thereof |
| CN113846978B (en) * | 2021-09-23 | 2023-12-12 | 福建省水文地质工程地质勘察研究院 | Portable survey pole that geological survey used |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050075A (en) * | 1988-11-22 | 1991-03-20 | 鞑靼国立石油工业科学研究所设计院 | Well reamer |
| US7197923B1 (en) * | 2005-11-07 | 2007-04-03 | Halliburton Energy Services, Inc. | Single phase fluid sampler systems and associated methods |
| CN204782745U (en) * | 2015-07-20 | 2015-11-18 | 河北省地矿局第一地质大队 | Reverse circulation combined drilling tool |
| CN206681678U (en) * | 2017-03-17 | 2017-11-28 | 上海昌发岩土工程勘察技术有限公司 | A kind of screw type bit for ground exploration |
| US10233696B2 (en) * | 2014-06-18 | 2019-03-19 | Ulterra Drilling Technologies, L.P. | Drill bit |
-
2020
- 2020-03-26 CN CN202010221273.4A patent/CN111411896B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050075A (en) * | 1988-11-22 | 1991-03-20 | 鞑靼国立石油工业科学研究所设计院 | Well reamer |
| US7197923B1 (en) * | 2005-11-07 | 2007-04-03 | Halliburton Energy Services, Inc. | Single phase fluid sampler systems and associated methods |
| US10233696B2 (en) * | 2014-06-18 | 2019-03-19 | Ulterra Drilling Technologies, L.P. | Drill bit |
| CN204782745U (en) * | 2015-07-20 | 2015-11-18 | 河北省地矿局第一地质大队 | Reverse circulation combined drilling tool |
| CN206681678U (en) * | 2017-03-17 | 2017-11-28 | 上海昌发岩土工程勘察技术有限公司 | A kind of screw type bit for ground exploration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111411896A (en) | 2020-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111411896B (en) | Drill bit for petroleum geological exploration | |
| RU2351736C1 (en) | Washing unit of drilling bit | |
| CN101043974A (en) | Portable power tool comprising an exchangeable tool holding fixture | |
| CN1665638A (en) | Method for indexing a rotating tool and a tool for machining | |
| WO1997046785A1 (en) | Indexing percussive drilling bit | |
| EP0837979A1 (en) | Drill bit retainer for a down hole hammer assembly | |
| US9695647B2 (en) | Downhole tool retainer and guide ring | |
| JP4901059B2 (en) | Quick release drill bit for downhole drills | |
| CA2785817C (en) | Drive pin support | |
| US20100263932A1 (en) | Bit retainer assembly for a down-hole drill | |
| CN109653694B (en) | Bearing assembly for tubular column | |
| CN104551130A (en) | Drilling device | |
| CN114165180B (en) | Coring drilling tool and coring drilling machine | |
| US20210245270A1 (en) | Hole saw assembly | |
| CN217233435U (en) | Diameter-variable centralizer | |
| CN203679365U (en) | Drilling machining machine tool structure | |
| CN217080351U (en) | Novel drill rod clamp device for rock drill | |
| CN107532461B (en) | Improved short-pitch components | |
| CN212642600U (en) | Core bit for rock-soil drilling machine | |
| CN220515507U (en) | Boring cutter device for processing concentric stepped holes | |
| CN215804380U (en) | Internal and external three-tooth reaming composite sheet rib tip drill bit | |
| CN219665757U (en) | Deep hole drill bit | |
| CN211304905U (en) | Inner cavity counter sinking anticreep cutter arbor | |
| CN212761323U (en) | Hole digger convenient to change trompil cover | |
| CN117345118A (en) | Rotary tooth, rotary digging assembly and cutter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210625 |