CN114458161B - Non-hard rock coring bit and processing technology thereof - Google Patents
Non-hard rock coring bit and processing technology thereof Download PDFInfo
- Publication number
- CN114458161B CN114458161B CN202210388517.7A CN202210388517A CN114458161B CN 114458161 B CN114458161 B CN 114458161B CN 202210388517 A CN202210388517 A CN 202210388517A CN 114458161 B CN114458161 B CN 114458161B
- Authority
- CN
- China
- Prior art keywords
- block
- steel body
- drill
- working layer
- water gap
- 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.)
- Active
Links
- 239000011435 rock Substances 0.000 title claims abstract description 35
- 238000005516 engineering process Methods 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 148
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 106
- 239000010959 steel Substances 0.000 claims abstract description 106
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims description 60
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 31
- 229910002804 graphite Inorganic materials 0.000 claims description 31
- 239000010439 graphite Substances 0.000 claims description 31
- 238000005245 sintering Methods 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 14
- 229910003460 diamond Inorganic materials 0.000 claims description 10
- 239000010432 diamond Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000007731 hot pressing Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 19
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Images
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
- E21B10/00—Drill bits
- E21B10/02—Core bits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
-
- 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
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/605—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a core-bit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a non-hard rock coring bit and a processing technology thereof, belonging to the technical field of drill bits for geological exploration. The technical scheme is as follows: the positive water gaps (4) and the negative water gaps (5) are alternately arranged at the end part of the drill steel body (1), the bulges between the adjacent positive water gaps and the negative water gaps are the blocks, and the blocks comprise a first block (2) and a second block (3); a first tire block (2) is arranged between the adjacent positive water gap and the reverse water gap which are opposite in the spiral direction, a second tire block (3) is arranged between the adjacent positive water gap (4) and the reverse water gap (5) which are opposite in the spiral direction, and the first tire block and the second tire block are alternately arranged on the circumference of the end part of the drill steel body. The invention has the beneficial effects that: the manufacturing is convenient, the structure is reasonable, and the phenomena of collapse and sticking are reduced; the method has the advantages that frequent replacement of the drill bit is reduced in the soft rock stratum, the drilling work efficiency is improved, the drilling cost is reduced, the aim of the invention is achieved through the actual use of the on-site machine, and the problem that the core of the soft rock stratum is difficult in the drilling technical field for geological exploration is solved.
Description
Technical Field
The invention relates to a non-hard rock coring bit and a processing technology thereof, belonging to the technical field of drill bits for geological exploration.
Background
The drill bit for geological exploration is generally a core diamond drill bit, and the geology for exploration can be divided into a soft stratum and a hard stratum. The prior art is more mature for coring of hard strata, the lip surface of a commonly used coring diamond bit is mostly in a zigzag shape and a flat bottom shape, a main water gap of the coring diamond bit is perpendicular to the axis of the bit, the width is generally about 5mm, the inner water gap and the outer water gap are shallower and are generally 2-3mm, when the coring diamond bit drills into the hard strata, the diamond in a bit matrix grinds rocks to generate thinner rock powder, and the rock powder can be flushed out from the water gap of the bit under the impact of water flow and is discharged to the ground. The soft stratum mainly comprises argillaceous stratum, sand layer, mudstone, non-silicified limestone and other strata, and the stratum is characterized in that the soil is loose and unstable, and the coring diamond bit is easy to have the problems of reducing diameter, collapsing, sticking and the like in the drilling process; aiming at the problems that when a soft bottom layer (soft rock) is drilled, the structure of a water gap has great defects, the stability of a drilling tool is poor, the disturbance on a rock core is large, the rock core sampling rate is low, and the blockage and the drill sticking of a drill bit are caused, the problems are not effectively solved all the time. In addition, the working layer structure of the coring diamond bit block in the prior art is unreasonable, the drilling efficiency is low, and the drilling cost is improved.
Disclosure of Invention
The invention aims to provide a non-hard rock coring bit and a processing technology thereof, which can avoid the blocking and sticking of the bit, improve the drilling efficiency, reduce the drilling cost and solve the technical problems in the prior art.
The technical scheme of the invention is as follows:
a non-hard rock core drill bit, the water gap of the end of the steel body of the drill bit is divided into positive water gap and negative water gap, positive water gap and negative water gap are spiral water gap, namely the water gap forms an arc channel from the inner cavity of the steel body of the drill bit to the outer circumference of the steel body of the drill bit; the spiral direction of the arc-shaped channel of the positive nozzle is opposite to the rotating direction of the drill steel body, and the spiral direction of the arc-shaped channel of the reverse nozzle is the same as the rotating direction of the drill steel body; the positive water gaps and the negative water gaps are alternately arranged at the end part of the drill steel body, the bulge between the adjacent positive water gaps and the negative water gaps is a block, and the block comprises a first block and a second block; a first tire block is arranged between the adjacent positive water gap and the reverse water gap which are opposite in the spiral direction, and the first tire block is a sector tire block with a small outer part and a large inner part; a second tire block is arranged between the adjacent positive water gap and the reverse water gap which are opposite in spiral direction, and the second tire block is a sector tire block with a large outer part and a small inner part; the first tire blocks and the second tire blocks are alternately arranged on the circumference of the end part of the drill steel body.
The four sides of the first tire block are all arcs, the bending directions of the arcs on the inner side and the outer side are the same, the arcs are bent outwards, the centers of the inner arc and the outer arc are the same as the center of the drill steel body, the arcs on the left side and the right side are bent towards the inside of the first tire block, the bending curvatures are the same, and the directions are opposite; the four sides of the second tire block are all arc lines, the arc lines on the inner side and the outer side are same in bending direction and are all bent outwards, the circle centers of the inner arc line and the outer arc line are the same as the circle center of the drill steel body, the arc lines on the left side and the right side are all bent towards the outer portion of the second tire block, and the bending curvatures are same and opposite in direction.
The number of the positive water gaps is equal to that of the reverse water gaps, and the number of the first tire blocks is the same as that of the second tire blocks.
The radian, the width and the length of the positive water gap and the negative water gap are the same, and the directions of curvature of the radians are opposite; the first block and the second block are symmetrically identical.
The first tire block and the second tire block protrude out of the inner cavity and the outer wall of the drill steel body; the first tire block and the second tire block protrude out of the outer wall part of the drill steel body, and a water gap outer water channel is formed between the first tire block and the second tire block; the first tire block and the second tire block protrude out of the inner cavity of the drill steel body, and a water gap inner water channel is formed between the first tire block and the second tire block.
The water gap inner water channel is arranged on the inner diameter of the drill steel body, between the first forming block and the second forming block, and extends along the inner wall of the drill steel body. The water gap outer water channel is arranged on the outer diameter of the drill bit steel body and between the first tire block and the second tire block, and extends along the outer wall of the drill bit steel body.
The tire block is composed of a working layer and a non-working layer, the working layer and the end part of the drill steel body are connected together by the non-working layer, and the working layer, the non-working layer and the end part of the drill steel body are sintered into an integral drill.
The surface of the working layer is a drill bit lip surface which is of a stepped structure.
The end part of the drill steel body is provided with a step structure the same as the lip surface of the drill, and the non-working layer connected with the end part of the drill steel body is of a matched step structure.
A processing technology of a non-hard rock core drill bit adopts a graphite mould to combine, a drill bit steel body is placed, non-working layer powder and working layer powder are filled, medium-frequency hot-pressing sintering molding is adopted, and the drill bit steel body, the non-working layer powder and the working layer powder are sintered into the core drill bit; sintering the powder material of the working layer into a first tire block and a second tire block at the end part of the coring bit; the first tire block is a sector tire block with a small outer part and a large inner part, the second tire block is a sector tire block with a large outer part and a small inner part, and the first tire block and the second tire block are alternately arranged on the circumference of the end part of the drill steel body; an arc-shaped channel between the first block and the second block forms a positive water gap and a negative water gap which are arranged in a staggered mode, the radian, the width and the length of the positive water gap and the negative water gap are the same, and the bending directions of the radians are opposite; the first block and the second block are symmetrically identical.
The matrix block consists of a working layer and a non-working layer, the working layer and the end part of the drill steel body are connected together by the non-working layer, and the working layer, the non-working layer and the end part of the drill steel body are sintered into an integral drill; the surface of the working layer is a drill bit lip surface which is of a stepped structure; the end part of the drill steel body is provided with a stepped structure which is the same as the drill lip surface, and a non-working layer connected with the end part of the drill steel body is of a matched stepped structure.
The graphite mold comprises a bottom mold, a gasket and a mold core, wherein the shape of an inner cavity of the bottom mold is matched with the shape of the drill bit steel body, the shape of the gasket is matched with the shape of a drill bit lip surface of the working layer (the gasket is arranged in a shape opposite to the drill bit lip surface), and the shape of the mold core is matched with the shape of the inner cavity of the drill bit steel body; placing a gasket and a mold core into a bottom mold, placing the gasket at the position of the drill bit lip surface of the first mold block and the second mold block, filling graphite at the position of a reserved positive water gap and a reserved negative water gap to form a graphite port, wherein the shape of the graphite port is preset according to the shapes of the first mold block and the second mold block to form a positive negative graphite port; filling working layer powder in a cavity formed outside the graphite water port, and continuously filling non-working layer powder after the working layer powder is filled; putting the drill steel body into the bottom die and matching with the die core, and compacting the drill steel body and the powder of the non-working layer; and sintering the drill steel body, the non-working layer powder and the working layer powder into a whole at high temperature.
The powder material of the working layer is a mixture of diamond powder and metal powder; the powder of the non-working layer is metal powder.
In the drilling process of the drill bit, the drill bit drills in the forward rotating direction, and due to the fact that the forward water gaps and the reverse water gaps of the arc-shaped channel are alternately arranged, the water quantity flowing out of the forward water gaps is large under the internal pressure of the drill bit and the rotating action of the drill bit, the water quantity flowing out of the reverse water gaps is small under the internal pressure of the drill bit, so that turbulent flow (turbulent flow) is formed between the drill bit and the bottom of a well body, rock powder and rock debris at the bottom of the hole are quickly separated from the bottom of the hole, and the problem of drilling sticking is avoided. The lip face of the drill bit adopts the design of the lip face with multi-stage steps, so that rock strata can be carved preferentially, and the purpose of rapid footage is achieved. After the measures are taken, the outer diameter of the drill bit can be increased at the same time, the hole diameter is ensured in the drilling process, the phenomenon of indentation holding the drill bit is prevented, and the rock powder is favorably discharged. The inner water channel and the outer water channel effectively ensure that flushing liquid washes the drill bit and the hole bottom, and effective flow is provided to achieve the purpose of cooling the drill bit.
The invention has the beneficial effects that: the drill bit is convenient to manufacture and reasonable in structure, the problem of adaptability of the drill bit to soft rock strata is solved, and collapse and stuck drilling phenomena are reduced; the method has the advantages that frequent replacement of the drill bit is reduced in the soft rock stratum, the drilling work efficiency is improved, the drilling cost is reduced, the aim of the invention is achieved through the actual use of the on-site machine, and the problem that the core of the soft rock stratum is difficult in the drilling technical field for geological exploration is solved.
Drawings
FIG. 1 is a schematic view of a bottom mold according to an embodiment of the present invention;
FIG. 2 is a schematic view of a gasket according to an embodiment of the invention;
FIG. 3 is a schematic view of a drill steel body according to an embodiment of the present invention;
FIG. 4 is a schematic view of a mold core according to an embodiment of the invention;
FIG. 5 is a schematic view of a process according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a core bit according to an embodiment of the present invention;
FIG. 7 is a schematic top view of a core bit according to an embodiment of the present invention;
in the figure: the drill bit steel body 1, the first block 2, the second block 3, the positive water port 4, the reverse water port 5, the water port inner water channel 6, the water port outer water channel 7, the drill bit lip surface 8, the bottom die 9, the gasket 10, the mold core 11, the working layer 12, the non-working layer 13 and the graphite water port 14.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings.
A non-hard rock core drill bit, the water gap of the end of the drill bit steel body 1 is divided into a positive water gap 4 and a negative water gap 5, the positive water gap 4 and the negative water gap 5 are both spiral water gaps, namely the water gap forms an arc-shaped channel from the inner cavity of the drill bit steel body 1 to the outer circumference of the drill bit steel body 1; the spiral direction of the arc-shaped channel of the positive nozzle 4 is opposite to the rotating direction of the drill steel body 1, and the spiral direction of the arc-shaped channel of the reverse nozzle 5 is the same as the rotating direction of the drill steel body 1; the positive water gaps 4 and the negative water gaps 5 are alternately arranged at the end part of the drill steel body 1, the bulges between the adjacent positive water gaps 4 and the negative water gaps 5 are the tire blocks, and the tire blocks comprise a tire block I2 and a tire block II 3; a first tire block 2 is arranged between the adjacent positive water gap 4 and the reverse water gap 5 which are opposite in the spiral direction, and the first tire block 2 is a similar fan-shaped tire block with a small outer part and a large inner part; a second block 3 is arranged between the adjacent positive water gap 4 and the reverse water gap 5 which are opposite in spiral direction, and the second block 3 is a similar fan-shaped block with a large outer part and a small inner part; the first tire blocks 2 and the second tire blocks 3 are alternately arranged on the circumference of the end part of the drill steel body 1.
The four sides of the first block 2 are all arcs, the bending directions of the arcs on the inner side and the outer side are the same, the arcs are bent outwards, the centers of the inner arc and the outer arc are the same as the center of the drill steel body 1, the arcs on the left side and the right side are bent towards the inner part of the first block 2, the bending curvatures are the same, and the directions are opposite; the four sides of the second block 3 are all arcs, the arc bending directions of the inner side and the outer side are the same, the inner arc and the outer arc are both outward bent, the circle centers of the inner arc and the outer arc are the same as the circle center of the drill steel body 1, the arcs on the left side and the right side are both bent towards the outer portion of the second block 3, and the bending curvatures are the same and opposite in direction.
The number of the positive water gaps 4 is equal to that of the negative water gaps 5, and the number of the first blocks 2 is equal to that of the second blocks 3.
The radian, the width and the length of the positive water gap 4 and the reverse water gap 5 are the same, and the directions of curvature of the radians are opposite; the first block 2 and the second block 3 are symmetrically identical.
The first tire block 2 and the second tire block 3 protrude out of the inner cavity and the outer wall of the drill steel body 1; the first block 2 and the second block 3 protrude out of the outer wall of the drill steel body 1, and a water gap outer water channel 7 is formed between the first block and the second block; the inner cavity part of the drill steel body 1, which protrudes from the first block 2, and the inner cavity part of the drill steel body 1, which protrudes from the second block 3, form a water gap inner water channel 6.
The water gap inner water channel 6 is arranged on the inner diameter of the drill bit steel body 1 and between the first forming block 2 and the second forming block 3, and the water gap inner water channel 6 extends along the inner wall of the drill bit steel body 1; the water gap outer water channel 7 is arranged on the outer diameter of the drill bit steel body 1, between the first forming block 2 and the second forming block 3, and the water gap outer water channel 7 extends along the outer wall of the drill bit steel body 1.
The block is composed of a working layer 12 and a non-working layer 13, the non-working layer 13 connects the working layer 12 with the end of the drill steel body 1, and the working layer 12, the non-working layer 13 and the end of the drill steel body 1 are sintered into an integral drill.
The surface of the working layer 12 is a drill bit lip surface 8, and the drill bit lip surface 8 is of a stepped structure.
The end part of the drill steel body 1 is provided with a stepped structure which is the same as the drill lip surface 8, and the non-working layer 13 connected with the end part of the drill steel body 1 is of a matched stepped structure.
A processing technology of a non-hard rock core bit adopts a graphite mould to combine, a bit steel body 1 is placed, non-working layer powder and working layer powder are filled, intermediate frequency hot pressing sintering forming is adopted, and the bit steel body 1, the non-working layer powder and the working layer powder are sintered into the core bit; sintering the powder of the working layer into a first tire block 2 and a second tire block 3 at the end part of the coring bit; the first tire block 2 is a similar fan-shaped tire block with a small outer part and a large inner part, the second tire block 3 is a similar fan-shaped tire block with a large outer part and a small inner part, and the first tire block 2 and the second tire block 3 are alternately arranged on the circumference of the end part of the drill steel body 1; an arc-shaped channel between the first block 2 and the second block 3 forms a positive water gap 4 and a negative water gap 5 which are arranged in a staggered mode, the radians, widths and lengths of the positive water gap 4 and the negative water gap 5 are the same, and the directions of curvature of the radians are opposite; the first block 2 and the second block 3 are symmetrically identical.
The block consists of a working layer 12 and a non-working layer 13, the non-working layer 13 connects the working layer 12 with the end part of the drill steel body 1, and the working layer 12, the non-working layer 13 and the end part of the drill steel body 1 are sintered into an integral drill; the surface of the working layer 12 is a drill bit lip surface 8, and the drill bit lip surface 8 is of a stepped structure; the end part of the drill steel body 1 is provided with a stepped structure which is the same as the drill lip surface 8, and the non-working layer 13 connected with the end part of the drill steel body 1 is of a matched stepped structure.
The graphite mold comprises a bottom mold 9, a gasket 10 and a mold core 11, wherein the shape of an inner cavity of the bottom mold 9 is matched with the shape of the drill bit steel body 1, the shape of the gasket 10 is matched with the shape of a drill bit lip surface 8 of a working layer 12 (the gasket is arranged in a shape opposite to the drill bit lip surface), and the shape of the mold core 11 is matched with the shape of the inner cavity of the drill bit steel body 1; placing a gasket 10 and a mold core into a bottom mold 9, placing the gasket 10 at the positions of the drill bit lip surfaces 8 of the first block 2 and the second block 3, filling graphite at the positions where the positive water gap 4 and the negative water gap 5 are reserved to form a graphite port, wherein the shape of the graphite port is preset according to the shapes of the first block 2 and the second block 3 to form a positive reverse graphite port; filling working layer powder in a cavity formed outside the graphite water port, and continuously filling non-working layer powder after the working layer powder is filled; the drill steel body 1 is placed in the bottom die 9 and matched with the die core, and the drill steel body is compacted by pressing with the powder of the non-working layer; and (4) sintering at high temperature to integrate the drill steel body 1, the non-working layer powder and the working layer powder.
The powder material of the working layer is a mixture of diamond powder and metal powder; the powder of the non-working layer is metal powder.
In the drilling process of the drill bit, the drill bit drills in the forward rotating direction, and due to the fact that the forward water port 4 and the reverse water port 5 of the arc-shaped channel are alternately arranged, the water flowing out of the forward water port 4 is large under the internal pressure of the drill bit and the rotating action of the drill bit, and the water flowing out of the reverse water port is small under the internal pressure of the drill bit, turbulence is formed between the drill bit and the bottom of a well body, rock powder and rock debris at the bottom of the hole are quickly separated from the bottom of the hole, and the problem of drill sticking is avoided. The lip face of the drill bit adopts the design of the lip face with multi-stage steps, so that rock strata can be carved preferentially, and the purpose of rapid footage is achieved. After the measures are taken, the outer diameter of the drill bit can be increased simultaneously, the hole diameter is ensured in the drilling process, the phenomenon of indentation holding the drill is prevented, and the rock powder is favorably removed. The water gap inner water channel and the water gap outer water channel effectively guarantee flushing liquid to flush the drill bit and the hole bottom, and effective flow is provided to achieve the purpose of cooling the drill bit.
In the embodiment, the drill lip surface 8 adopts a three-step design, and the width of each step is 5-7 mm.
The total number of the positive water gaps 4 and the negative water gaps 5 is 6-12, and the width is 6-12 mm.
The number of the positive water gaps 4 is equal to that of the reverse water gaps 5; for example: the total number of the positive water gaps 4 and the reverse water gaps 5 is eight, the number of the reverse water gaps 5 is 4, and the number of the positive water gaps 4 is 4.
The positive water gap 4 and the reverse water gap 5 can form turbulent flow at the bottom of the hole due to different water outlet directions when the drill bit drills, rock powder at the bottom of the hole is stirred up and taken away along with flushing liquid, and the drill bit is prevented from being stuck with the drilling liquid.
The outer diameter of the drill bit is enlarged by 10-20mm through an enlarging design.
The water gap inner water channel 6 of the drill bit is designed to be a deep water gap, and the depth is 5-10 mm.
The total quantity of the first block 2 and the second block 3 is eight, the number of the first block 2 is four, and the number of the second block 3 is four.
A non-hard rock core drill bit processing technology adopts a graphite die combination, fills metal powder and a drill bit steel body, and adopts intermediate frequency hot pressing sintering molding; the method comprises the following steps:
firstly, a drill bit steel body 1 is processed, the outer diameter of the drill bit steel body is consistent with that of a drill bit, and the upper end of the drill bit steel body is processed into a step shape which is the same as that of a drill bit lip surface;
processing a bottom die 9 of the drill bit, wherein the inner diameter of the bottom die is the same as the outer diameter of the drill bit;
machining a washer 10 of the drill bit, wherein the washer is arranged in a shape opposite to the lip surface of the drill bit;
and machining a mold core 11 of the drill bit, wherein the diameter of the mold core is the same as the inner diameter of the drill bit.
Secondly, the gasket 10 and the mold core are placed in the bottom mold 9, a reserved water gap on the gasket is filled with graphite (a graphite ink port) to form a positive and negative graphite ink port 14, a cavity formed outside the graphite ink port is filled with working layer powder, the working layer powder is continuously filled after the working layer powder is filled, finally, the drill steel body is placed in the bottom mold and is compressed and compacted, and the drill mold is assembled.
Thirdly, sintering the assembled drill bit mould at high temperature, and sintering various powder materials and the drill bit steel body into a whole.
And fourthly, withdrawing the bottom die, the gasket and the die core of the sintered drill bit, and removing the graphite in the water gap of the drill bit, so that the sintering process of the drill bit is completed.
And fifthly, machining the drill bit to the required size.
Sixthly, processing a positive water gap and a reverse water gap of the drill bit.
And seventhly, carrying out surface treatment on the drill bit.
In the manufacturing process of the invention, the drill steel body 1 and the non-working layer 13 can be processed, the water gap inner water channel 6 is processed on the drill steel body 1 and the non-working layer 13 through a slotting machine, and the water gap outer water channel 7 is processed on the drill steel body 1 and the non-working layer 13 through a grinding machine.
The working layer 12 is not machinable, and by extracting the gasket 10 (graphite) and the graphite on the working layer 12, a graphite port 14 appears, which comprises a positive water port 4 and a negative water port 5; the working layer 12 presents both blocks one 2 and two 3 and presents the bit lip face 8.
Claims (7)
1. A non-hard rock coring bit, characterized by: the water gap at the end part of the drill steel body (1) is divided into a positive water gap (4) and a negative water gap (5), the positive water gap (4) and the negative water gap (5) are both spiral water gaps, namely, the water gaps form an arc-shaped channel from the inner cavity of the drill steel body (1) to the outer circumference of the drill steel body (1); the spiral direction of the arc-shaped channel of the positive nozzle (4) is opposite to the rotating direction of the drill steel body (1), and the spiral direction of the arc-shaped channel of the reverse nozzle (5) is the same as the rotating direction of the drill steel body (1); the positive water gaps (4) and the negative water gaps (5) are alternately arranged at the end part of the drill steel body (1), the bulges between the adjacent positive water gaps (4) and the negative water gaps (5) are the tire blocks, and the tire blocks comprise a tire block I (2) and a tire block II (3); a first tire block (2) is arranged between the adjacent positive water gap (4) and the reverse water gap (5) which are opposite in the spiral direction, and the first tire block (2) is a sector tire block with a small outer part and a large inner part; a second tire block (3) is arranged between the adjacent positive water gap (4) and the reverse water gap (5) which are opposite in the spiral direction, and the second tire block (3) is a sector tire block with a large outer part and a small inner part; the first tire blocks (2) and the second tire blocks (3) are alternately arranged on the circumference of the end part of the drill steel body (1);
the four sides of the first block (2) are all arcs, the arc bending directions of the inner side and the outer side are the same, the inner arc and the outer arc are both bent outwards, the circle centers of the inner arc and the outer arc are the same as the circle center of the drill steel body (1), the arc lines on the left side and the right side are both bent towards the inside of the first block (2), the bending curvatures are the same, and the directions are opposite; the four sides of the second block (3) are all arcs, the arc bending directions of the inner side and the outer side are the same, the inner arc and the outer arc are both bent outwards, the circle centers of the inner arc and the outer arc are the same as the circle center of the drill steel body (1), the arc lines on the left side and the right side are both bent towards the outside of the second block (3), the bending curvatures are the same, and the directions are opposite;
the first tire block (2) and the second tire block (3) protrude out of the inner cavity and the outer wall of the drill steel body (1); the first forming block (2) and the second forming block (3) protrude out of the outer wall of the drill steel body (1) to form a water gap outer water channel (7); the first block (2) and the second block (3) protrude out of the inner cavity of the drill steel body (1) to form a water gap inner water channel (6);
the water gap inner water channel (6) is arranged on the inner diameter of the drill bit steel body (1), between the first molding block (2) and the second molding block (3), and the water gap inner water channel (6) extends along the inner wall of the drill bit steel body (1); the water gap outer water channel (7) is arranged on the outer diameter of the drill bit steel body (1), between the first block (2) and the second block (3), and the water gap outer water channel (7) extends along the outer wall of the drill bit steel body (1).
2. A non-hard rock coring bit as set forth in claim 1, wherein: the number of the positive water gaps (4) is equal to that of the negative water gaps (5), and the number of the first blocks (2) is equal to that of the second blocks (3); the radian, the width and the length of the positive water gap (4) and the reverse water gap (5) are the same, and the directions of curvature of the radians are opposite; the first block (2) and the second block (3) are symmetrically identical.
3. A non-hard rock coring bit as set forth in claim 1 or 2, wherein: the block is composed of a working layer (12) and a non-working layer (13), the working layer (12) and the end part of the drill steel body (1) are connected together through the non-working layer (13), and the working layer (12), the non-working layer (13) and the end part of the drill steel body (1) are sintered into an integral drill.
4. A non-hard rock coring bit as set forth in claim 3, wherein: the surface of the working layer (12) is a drill bit lip surface (8), and the drill bit lip surface (8) is of a stepped structure; the end part of the drill steel body (1) is provided with a step structure which is the same as the drill lip surface (8), and a non-working layer (13) connected with the end part of the drill steel body (1) is of a matched step structure.
5. A process of manufacturing a non-hard rock core bit as defined in any one of claims 1 to 4, wherein: combining by using a graphite die, putting a drill steel body (1), filling non-working layer powder and working layer powder, sintering and forming by adopting medium-frequency hot-pressing sintering, and sintering the drill steel body (1), the non-working layer powder and the working layer powder into a core drill; sintering the powder of the working layer into a first tire block (2) and a second tire block (3) at the end part of the core bit; the first tire block (2) is a sector tire block with a small outer part and a large inner part, the second tire block (3) is a sector tire block with a large outer part and a small inner part, and the first tire block (2) and the second tire block (3) are alternately arranged on the circumference of the end part of the drill steel body (1); an arc-shaped channel between the first block (2) and the second block (3) forms a positive water gap (4) and a negative water gap (5) which are arranged in a staggered mode, the radian, the width and the length of the positive water gap (4) and the negative water gap (5) are the same, and the radian bending directions are opposite; the first block (2) and the second block (3) are symmetrically identical.
6. The process of claim 5, wherein: the graphite mold comprises a bottom mold (9), a gasket (10) and a mold core (11), wherein the shape of an inner cavity of the bottom mold (9) is matched with the shape of the drill bit steel body (1), the shape of the gasket (10) is matched with the shape of a drill bit lip surface (8) of the working layer (12), the gasket is arranged in a shape opposite to the drill bit lip surface, and the shape of the mold core (11) is matched with the shape of the inner cavity of the drill bit steel body (1); placing a gasket (10) and a mold core into a bottom mold (9), placing the gasket (10) at the position of a drill bit lip surface (8) of a first block (2) and a second block (3), filling graphite at the positions where a positive water gap (4) and a negative water gap (5) are reserved to form a graphite port, wherein the shape of the graphite port is preset according to the shapes of the first block (2) and the second block (3) to form a positive reverse graphite port; filling working layer powder in a cavity formed outside the graphite water port, and continuously filling non-working layer powder after the working layer powder is filled; the drill bit steel body (1) is placed in the bottom die (9) and matched with the die core, and the drill bit steel body is compacted by pressing with powder of a non-working layer; and (3) sintering at high temperature to integrate the drill steel body (1), the non-working layer powder and the working layer powder.
7. The process of claim 5, wherein: the powder material of the working layer is a mixture of diamond powder and metal powder; the powder of the non-working layer is metal powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210388517.7A CN114458161B (en) | 2022-04-14 | 2022-04-14 | Non-hard rock coring bit and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210388517.7A CN114458161B (en) | 2022-04-14 | 2022-04-14 | Non-hard rock coring bit and processing technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114458161A CN114458161A (en) | 2022-05-10 |
| CN114458161B true CN114458161B (en) | 2022-06-24 |
Family
ID=81418707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210388517.7A Active CN114458161B (en) | 2022-04-14 | 2022-04-14 | Non-hard rock coring bit and processing technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114458161B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115401197B (en) * | 2022-08-17 | 2024-01-23 | 中铁第四勘察设计院集团有限公司 | Diamond-impregnated drill bit manufacturing die, manufacturing method and diamond-impregnated drill bit |
| CN116652190B (en) * | 2023-07-28 | 2023-10-03 | 金石钻探(唐山)股份有限公司 | Novel die for diamond drill bit and manufacturing method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0512329A2 (en) * | 1991-05-06 | 1992-11-11 | WAVE TEC Ges.m.b.H. | Core bit with hydrodynamic core destruction |
| CN102128013A (en) * | 2011-03-07 | 2011-07-20 | 佛山市南海锐力臣工具有限公司 | Diamond impregnated wire line coring geological bit and manufacturing method thereof |
| CN202152638U (en) * | 2011-08-01 | 2012-02-29 | 中矿资源勘探股份有限公司 | Diamond drill bit with trapezoid matrix |
| CN102503426A (en) * | 2011-10-28 | 2012-06-20 | 吉林大学 | Diamond-impregnated bit nozzle material and preparation method for same |
| CN204040913U (en) * | 2014-09-18 | 2014-12-24 | 吴宣成 | A kind of diamond-impregnated bit |
| CN104373044A (en) * | 2014-11-03 | 2015-02-25 | 中国石油大学(北京) | Tangential injection type whirl flow jet flow grinding drill bit for horizontal well |
| CN104481411A (en) * | 2014-12-23 | 2015-04-01 | 徐州博安科技发展有限责任公司 | Multi-purpose cooperative rotary cut radial self-rotation slit type inner concave multi-blade coreless drill bit |
| CN106471206A (en) * | 2014-04-07 | 2017-03-01 | 长年Tm公司 | Single water channel drill bit and the system using single water channel drill bit |
| CN106687659A (en) * | 2014-10-06 | 2017-05-17 | 哈里伯顿能源服务公司 | Securing mechanism for a drilling element on a downhole drilling tool |
| CN108240180A (en) * | 2018-01-05 | 2018-07-03 | 绍兴文理学院 | A kind of reverse circulation preventing sticking three wings drag bit assemblies |
| CN111677454A (en) * | 2020-05-22 | 2020-09-18 | 福建省华力勘测设计有限公司 | Drill bit steel body with splayed gathering staggered water paths |
| CN214532799U (en) * | 2021-02-09 | 2021-10-29 | 金石钻探(唐山)股份有限公司 | Composite sheet coring bit |
| CN113846975A (en) * | 2021-10-19 | 2021-12-28 | 核工业二四三大队 | Diamond coring bit with double-layer water gap and manufacturing method thereof |
-
2022
- 2022-04-14 CN CN202210388517.7A patent/CN114458161B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0512329A2 (en) * | 1991-05-06 | 1992-11-11 | WAVE TEC Ges.m.b.H. | Core bit with hydrodynamic core destruction |
| CN102128013A (en) * | 2011-03-07 | 2011-07-20 | 佛山市南海锐力臣工具有限公司 | Diamond impregnated wire line coring geological bit and manufacturing method thereof |
| CN202152638U (en) * | 2011-08-01 | 2012-02-29 | 中矿资源勘探股份有限公司 | Diamond drill bit with trapezoid matrix |
| CN102503426A (en) * | 2011-10-28 | 2012-06-20 | 吉林大学 | Diamond-impregnated bit nozzle material and preparation method for same |
| CN106471206A (en) * | 2014-04-07 | 2017-03-01 | 长年Tm公司 | Single water channel drill bit and the system using single water channel drill bit |
| CN204040913U (en) * | 2014-09-18 | 2014-12-24 | 吴宣成 | A kind of diamond-impregnated bit |
| CN106687659A (en) * | 2014-10-06 | 2017-05-17 | 哈里伯顿能源服务公司 | Securing mechanism for a drilling element on a downhole drilling tool |
| CN104373044A (en) * | 2014-11-03 | 2015-02-25 | 中国石油大学(北京) | Tangential injection type whirl flow jet flow grinding drill bit for horizontal well |
| CN104481411A (en) * | 2014-12-23 | 2015-04-01 | 徐州博安科技发展有限责任公司 | Multi-purpose cooperative rotary cut radial self-rotation slit type inner concave multi-blade coreless drill bit |
| CN108240180A (en) * | 2018-01-05 | 2018-07-03 | 绍兴文理学院 | A kind of reverse circulation preventing sticking three wings drag bit assemblies |
| CN111677454A (en) * | 2020-05-22 | 2020-09-18 | 福建省华力勘测设计有限公司 | Drill bit steel body with splayed gathering staggered water paths |
| CN214532799U (en) * | 2021-02-09 | 2021-10-29 | 金石钻探(唐山)股份有限公司 | Composite sheet coring bit |
| CN113846975A (en) * | 2021-10-19 | 2021-12-28 | 核工业二四三大队 | Diamond coring bit with double-layer water gap and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114458161A (en) | 2022-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114458161B (en) | Non-hard rock coring bit and processing technology thereof | |
| CN106884617B (en) | Coring bit | |
| CN102773926A (en) | Drill bit and production method | |
| CN110056333B (en) | Hydraulic directional sand blasting perforation and slotting integrated device and using method thereof | |
| CN106437570A (en) | Drilling type continuous sand blasting device | |
| CN105178870B (en) | A kind of monoblock type hard alloy impulse jet nozzle and its production technology | |
| CN102852462A (en) | Composite inserted tooth blade type diamond comprehensive drill bit | |
| CN104481411A (en) | Multi-purpose cooperative rotary cut radial self-rotation slit type inner concave multi-blade coreless drill bit | |
| CN202578518U (en) | Concave-convex tooth-shaped thin-wall diamond engineering drill bit | |
| CN110107263B (en) | Method for exploiting coal bed gas from tectonic coal reservoir | |
| CN209067118U (en) | Drill bit for reverse circulation drilling | |
| CN212958479U (en) | Multilayer diamond coring bit | |
| CN214532799U (en) | Composite sheet coring bit | |
| CN213478209U (en) | Be used for polluting ground investigation groundwater monitoring well drilling equipment | |
| CN213234940U (en) | Drill bit for directional drilling | |
| CN115405270A (en) | Optimization method for water injection parameters of bedding drilling hole after mechanical reaming and permeability increasing | |
| CN113669090A (en) | Anchor rod construction process | |
| CN103352660A (en) | Half-funnel-type nozzle double-layer water channel diamond-impregnated bit | |
| RU49085U1 (en) | DIAMOND DRILL BIT | |
| CN108915600B (en) | Cross-tooth diamond drill bit and manufacturing method thereof | |
| CN218862539U (en) | PDC drill bit with composite teeth | |
| CN211448527U (en) | Guide drill bit for high-angle slope drilling | |
| CN218759728U (en) | Novel grouting hole-sweeping drill bit | |
| CN210888824U (en) | Anti-sticking bores spiral drill pole | |
| CN216142712U (en) | High strength diamond bit structure |
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 | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A non hard rock core drilling bit and its processing technology Effective date of registration: 20230807 Granted publication date: 20220624 Pledgee: China Construction Bank Co.,Ltd. Tangshan Jidong Oilfield sub branch Pledgor: Golden stone drilling (Tangshan) Limited by Share Ltd. Registration number: Y2023110000322 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |