CN107916896A - Diamond compact takes off cobalt protective device - Google Patents
Diamond compact takes off cobalt protective device Download PDFInfo
- Publication number
- CN107916896A CN107916896A CN201711430388.9A CN201711430388A CN107916896A CN 107916896 A CN107916896 A CN 107916896A CN 201711430388 A CN201711430388 A CN 201711430388A CN 107916896 A CN107916896 A CN 107916896A
- Authority
- CN
- China
- Prior art keywords
- fixing sleeve
- cobalt
- sleeve
- fixed column
- pressing sleeve
- 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.)
- Pending
Links
- 239000010941 cobalt Substances 0.000 title claims abstract description 34
- 229910017052 cobalt Inorganic materials 0.000 title claims abstract description 34
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 20
- 239000010432 diamond Substances 0.000 title claims abstract description 20
- 230000001681 protective effect Effects 0.000 title claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 238000013461 design Methods 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000002253 acid Substances 0.000 description 20
- 239000000956 alloy Substances 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910010037 TiAlN Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-N chloric acid Chemical compound OCl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-N 0.000 description 1
- 229940005991 chloric acid Drugs 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B12/00—Accessories for drilling tools
- E21B12/04—Drill bit protectors
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to diamond compact technical field, more particularly to a kind of diamond compact takes off cobalt protective device, including fixing sleeve, pressing sleeve, rubber ring and fixed column, cavity is carried in fixing sleeve, the side ring week of the fixing sleeve is equipped with chuck, the pressing sleeve be placed in in the cavity, and coordinate with the inner wall of fixing sleeve, the rubber ring is installed between the chuck and the pressing sleeve, band is useful for placing the storage tank of composite sheet on pressing sleeve, the bottom of the fixed column withstands on the dorsal part of the pressing sleeve, and fixed column is threaded in the opposite side of the fixing sleeve.Using this protective case, in the de- cobalt liquid of special formula, on the premise of taking off cobalt depth more than 0.6mm, design protection can complete technological requirement.
Description
Technical field
The present invention relates to diamond compact technical field, more particularly to a kind of diamond compact to take off cobalt protective device.
Background technology
Diamond compact bit abbreviation PDC drill bit, with rock bit and referred to as two big teeth of drilling industry, PDC are multiple
Close piece to be synthesized by GE companies of the U.S. earliest, diadust and hard alloy base are compounded in one by high-temperature high-pressure apparatus
Rise, subsequently, based on the invention of composite sheet, each major oil companies devise various diamond bits, particularly nineteen ninety
Afterwards, the progress of compound chip technology is quite rapid, and drilling footage drilled at home exceedes rock bit.
Composite sheet takes off cobalt technology, is proposed earliest by SUMITOMO CHEMICAL company, after diadust is mixed with cobalt powder, loads design
Good pressure transmission heat conduction cavity, is placed in cubic hinge press, micro mist then is synthesized composite sheet, as catalyst cobalt powder be present in it is micro-
Between powder particles and particle, diamond chemical bond is formd between micro mist and micro mist at this time, but remaining cobalt element can not
Take out.
The eighties in last century, the de- cobalt technology that Sumitomo company proposes, penetrates into Buddha's warrior attendant using strong acid by certain condition, acid solution
Between stone particle, by metallic cobalt decompose separate out, achieve the purpose that de- cobalt, subsequent test compound piece wearability it was found that,
The wearability of composite sheet can drastically lift 8-20 times, because when frictional experiment (large-scale vertical lathe turning granite) is in rock cutting
Heat can be produced so that composite sheet integrally particularly cuts Angle Position, drastically heat, the thermal expansion of diamond particles and cobalt element
Coefficient differs nearly 14 times, and cobalt drastically expands so that diamond mesh cracks, so as to exacerbate the rate of decay of composite sheet.De- cobalt
Afterwards, this problem is avoided, therefore wearability can be lifted.
The de- cobalt formula of subsequent those skilled in the art's exploitation is varied, can be strong acid, such as hydrochloric acid, nitric acid, and sulfuric acid is high
Chloric acid etc., can be highly basic, such as sodium hydroxide, calcium hydroxide, also has some salts, such as iron chloride, copper chloride etc., there is letter
Single chemical reaction, also has the example by electrochemical decomposition cobalt, after entering particularly into 21 century, composite sheet is with synthesis pressure
Lifting, density itself is higher and higher, and the reaction condition for taking off cobalt requires also increasingly harshness, often adds high temperature, high pressure, or even need
Strong stirring is wanted, Gas Stirring or strong ultrasound wave auxiliary can be only achieved preferable effect.
In face of this reaction environment, a problem having a bad headache is exactly the protection to matrix, because strong acid or high temperature are high
Pressure can damage the hard alloy part of composite sheet, easily can corrode hard alloy, and composite sheet is so as to scrap, therefore often
A very accurate protective device is needed to protect hard alloy part, it is necessary to which designing a sealing device prevents acid solution
Penetrate into, it is typically poly- with polytetrafluoroethylene material, polyvinylidene fluoride material, contraposition such as the design method in U.S. US9227302
Phenolic material etc., is also had some designs such as PVD deposition TiAlN thin film, is subsequently coated with using hot melt gun fusing resistant material, but
Be itself design it is quite important because once leaking, composite sheet is easy to scrap, so the design to protective device,
Protection Analysis of Nested Design particularly under high temperature and pressure strong acid state, its significance level are set not less than de- cobalt liquid chemical formulation itself
Meter.
The content of the invention
It is an object of the invention to overcome the shortcomings of above-mentioned technology, and a kind of diamond compact is provided and takes off cobalt protection dress
Put.
The present invention to achieve the above object, using following technical scheme：
A kind of diamond compact takes off cobalt protective device, it is characterised in that：Including fixing sleeve, pressing sleeve, rubber ring and consolidate
Fixed column, carry cavity in fixing sleeve, and a side ring of the fixing sleeve is all to be equipped with chuck, the pressing sleeve be placed in in the cavity,
And coordinate with the inner wall of fixing sleeve, the rubber ring is installed between the chuck and the pressing sleeve, and band is useful for putting on pressing sleeve
The storage tank of composite sheet is put, the bottom of the fixed column withstands on the dorsal part of the pressing sleeve, and fixed column is threaded in the fixation
The opposite side of set.
Preferably, the outside of the fixed column carries cover board, and the outside diameter of cover board is identical with the outside diameter of the fixing sleeve.
Preferably, the middle part of the fixed column carries external screw thread, with the screw-internal thread fit being arranged on fixing sleeve.
The beneficial effects of the invention are as follows:Relative to the prior art, using this protective case, in the de- cobalt liquid of special formula,
On the premise of de- cobalt depth is more than 0.6mm, design protection can complete technological requirement.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the installation diagram of the present invention；
Fig. 3 is the application drawing of the present invention；
Fig. 4 is the experiment installation diagram of the present invention；
Fig. 5 is Fig. 4 partial enlarged views；
Fig. 6 is the scanning electron microscope (SEM) photograph after composite sheet is cut；
Fig. 7 is the scanning electron microscope (SEM) photograph after composite sheet is cut.
Embodiment
Below in conjunction with the accompanying drawings and the preferred embodiment embodiment that the present invention will be described in detail.As depicted in figs. 1 and 2,
A kind of diamond compact takes off cobalt protective device, including fixing sleeve 1, pressing sleeve 2, rubber ring 3 and fixed column 4, band in fixing sleeve
Have a cavity, the fixing sleeve is equipped with chuck 5 one side ring week, the pressing sleeve be placed in in the cavity, and with fixing sleeve
Wall coordinates, and the rubber ring is installed between the chuck and the pressing sleeve, and band is useful for placing the accommodating of composite sheet on pressing sleeve
Groove 6, the bottom of the fixed column withstand on the dorsal part of the pressing sleeve, and fixed column is threaded in the opposite side of the fixing sleeve.Institute
The outside for stating fixed column carries cover board 7, and cover board is integrally formed with fixed column, the outside diameter phase of the outside diameter of cover board and the fixing sleeve
Together.Fixed column and fixing sleeve are connected through a screw thread, and have certain interval between pressing sleeve and fixed column, can be adjusted as needed big
It is small, it can be 0.3mm or smaller, can be 0.5mm or 0.7mm even 1mm etc., the compression for rubber ring
Amount then needs to go to calculate according to the ambient pressure size of de- cobalt system, and usual decrement can be 20% even smaller, and 23%,
26%, 30% even bigger, also have much relations with the selection of cushion rubber in itself, after calculating corresponding decrement, it may be determined that E
The card slot size of placement location rubber ring, then calculates the length relation between fixed column and fixing sleeve.
As shown in figure 3, in figure, 8 be the hard alloy base part of composite sheet, and 9 be diamond layer.Surrounding is reaction ring
Border, can be strong acid, highly basic, or saline solution, can have certain pressure in environment, such as 1Mp fixed columns, 2Mp fixed columns
Etc., certain pressure is bigger, and the test to sealing is harsher.
As shown in Figure 4 and Figure 5, the position of two arrow I, J marks is the position that should be paid close attention to, because in hyperbaric environment
In, by taking strong acid as an example, if using strong acid, the acid gas of acid even volatilization can be penetrated into from arrow I, the gap of J positions, still
This design can see, and J positions are penetrated into from the gap of fixed column test specimen and diamond composite layer G, then there is acid-resistant sealant circle guarantor
Shield, acid solution or acid gas can not penetrate further into and damage the hard alloy part of diamond compact.I position gaps, i.e.,
Acid solution or acid gas is set to be penetrated into from gap, screw thread can be processed into fine thread, be entangled to acidproof raw material band, such as polytetrafluoro
Ethene raw material band, can reduce the inlet of a part of corrosive liquid or etchant gas, even if the protection of Mei Ci roads, acid pass through certainly
Gap between pressing sleeve and fixing sleeve.Same rubber ring, which is in compressive state, can also play acid solution or acid gas stop work
With two parts can not all make acid enter K regions and damage hard alloy part.
In addition three belongs to Split type structure, after de- cobalt, as long as fixed column is screwed out, composite sheet is pushed, with regard to energy
Easily composite sheet is taken out, conventional design, since cushion rubber decrement is big, be quite not easy to take, this design also overcomes this
One problem.
As shown in Figure 6 and Figure 7, it is the scanning electron microscope (SEM) photograph after composite sheet is cut that the above two, which opens figure, it can be seen that de- cobalt depth
It can reach 0.6mm or so, conventional de- cobalt depth is in 0.3mm, and the de- cobalt depth of industry routine is in 0.5mm or so at present,
0.6-0.7mm is the high de- cobalt requirement of comparison, from the graph as can be seen that using this protective case, in the de- cobalt liquid of special formula,
On the premise of de- cobalt depth is more than 0.6mm, design protection can complete technological requirement, and design is successful.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of diamond compact takes off cobalt protective device, it is characterised in that：Including fixing sleeve, pressing sleeve, rubber ring and fixation
Column, carry cavity in fixing sleeve, and a side ring of the fixing sleeve is all to be equipped with chuck, the pressing sleeve be placed in in the cavity, and
Coordinate with the inner wall of fixing sleeve, the rubber ring is installed between the chuck and the pressing sleeve, and band is useful for placing on pressing sleeve
The storage tank of composite sheet, the bottom of the fixed column withstand on the dorsal part of the pressing sleeve, and fixed column is threaded in the fixing sleeve
Opposite side.
2. diamond compact according to claim 1 takes off cobalt protective device, it is characterised in that：The outside of the fixed column
With cover board, the outside diameter of cover board is identical with the outside diameter of the fixing sleeve.
3. diamond compact according to claim 1 takes off cobalt protective device, it is characterised in that：The middle part of the fixed column
With external screw thread, with the screw-internal thread fit being arranged on fixing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430388.9A CN107916896A (en) | 2017-12-26 | 2017-12-26 | Diamond compact takes off cobalt protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430388.9A CN107916896A (en) | 2017-12-26 | 2017-12-26 | Diamond compact takes off cobalt protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107916896A true CN107916896A (en) | 2018-04-17 |
Family
ID=61894325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711430388.9A Pending CN107916896A (en) | 2017-12-26 | 2017-12-26 | Diamond compact takes off cobalt protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107916896A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565094A (en) * | 2019-09-12 | 2019-12-13 | 成都岷江精密刀具有限公司 | Cobalt removing device for diamond composite sheet |
| WO2022156487A1 (en) * | 2021-01-22 | 2022-07-28 | 四川伽锐科技有限公司 | Sealed cobalt removal tooling, method, reagent, and polycrystalline diamond compact |
| EP4060079A4 (en) * | 2021-01-22 | 2022-09-21 | Sichuan Jiarui Technology Co., Ltd. | Sealed drill bit release device, reagent, and method, and application |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120227332A1 (en) * | 2011-03-04 | 2012-09-13 | Smith International, Inc. | Deep leach pressure vessel for shear cutters |
| CN205689939U (en) * | 2016-01-11 | 2016-11-16 | 宝鸡市铭坤有色金属有限公司 | Screw connection for high-pressure pipeline |
| CN106678476A (en) * | 2017-02-20 | 2017-05-17 | 江苏丰禾机械制造股份有限公司 | Sleeve-type dynamic seal compensator |
| CN207673291U (en) * | 2017-12-26 | 2018-07-31 | 天津立林钻头有限公司 | Diamond compact takes off cobalt protective device |
-
2017
- 2017-12-26 CN CN201711430388.9A patent/CN107916896A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120227332A1 (en) * | 2011-03-04 | 2012-09-13 | Smith International, Inc. | Deep leach pressure vessel for shear cutters |
| CN205689939U (en) * | 2016-01-11 | 2016-11-16 | 宝鸡市铭坤有色金属有限公司 | Screw connection for high-pressure pipeline |
| CN106678476A (en) * | 2017-02-20 | 2017-05-17 | 江苏丰禾机械制造股份有限公司 | Sleeve-type dynamic seal compensator |
| CN207673291U (en) * | 2017-12-26 | 2018-07-31 | 天津立林钻头有限公司 | Diamond compact takes off cobalt protective device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565094A (en) * | 2019-09-12 | 2019-12-13 | 成都岷江精密刀具有限公司 | Cobalt removing device for diamond composite sheet |
| WO2022156487A1 (en) * | 2021-01-22 | 2022-07-28 | 四川伽锐科技有限公司 | Sealed cobalt removal tooling, method, reagent, and polycrystalline diamond compact |
| EP4060079A4 (en) * | 2021-01-22 | 2022-09-21 | Sichuan Jiarui Technology Co., Ltd. | Sealed drill bit release device, reagent, and method, and application |
| EP4053305A4 (en) * | 2021-01-22 | 2023-06-07 | Sichuan Jiarui Technology Co., Ltd. | Sealed cobalt removal tooling, method, reagent, and polycrystalline diamond compact |
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