CN106018144A - Laminating support agent frictional wear tester and laminating support agent frictional wear device - Google Patents
Laminating support agent frictional wear tester and laminating support agent frictional wear device Download PDFInfo
- Publication number
- CN106018144A CN106018144A CN201610384941.9A CN201610384941A CN106018144A CN 106018144 A CN106018144 A CN 106018144A CN 201610384941 A CN201610384941 A CN 201610384941A CN 106018144 A CN106018144 A CN 106018144A
- Authority
- CN
- China
- Prior art keywords
- overlay film
- proppant
- fretting wear
- spiral
- 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.)
- Granted
Links
- 238000010030 laminating Methods 0.000 title abstract 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000005299 abrasion Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 239000006004 Quartz sand Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/565—Investigating resistance to wear or abrasion of granular or particulate material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0037—Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0284—Bulk material, e.g. powders
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Crushing And Grinding (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention relates to a laminating support agent frictional wear tester and a laminating support agent frictional wear device. The laminating support agent frictional wear tester includes a laminating support agent frictional wear device. The laminating support agent frictional wear device includes a cylinder with length extending along the left and right direction, and a grinding rod, which is inserted into the cylinder or sleeves outside the cylinder, and has a rotation axis extending in the extending along the left and right direction. The grinding rod comprises a rod body and a spiral friction groove, which is arranged on a peripheral surface of one side of the rod body adjacent to the cylinder, and used for cooperating with a cylinder wall corresponding to the cylinder for extending along the left and right direction of the axis the support agent frictional wear. The laminating support agent frictional wear tester also comprise a driving device for driving the rotation of the grinding rod. For usage, the support agent is added in the spiral friction groove, and moves in the spiral friction groove under rotation of the grinding rod; the support agent frictions with the cylinder wall corresponding to the cylinder to produce wear.
Description
Technical field
The present invention relates to a kind of overlay film proppant fretting wear instrument and overlay film proppant fretting wear device thereof.
Background technology
During oil gas field reservoir reconstruction, the most hypotonic, in the reservoir reconstruction of special hypotonic oil gas field, fracturing has become volume increase and has improved the Main Means of recovery ratio.At present the proppant used by fracturing technology is mainly based on haydite and quartz sand, although quartz sand low cost, density little but because its intensity is low, be mainly used in the fracturing work of shallow-layer low clossing pressure well；Haydite intensity height is mainly used in the fracturing technology of middle-deep well, but it has density big, and frictional resistance is big, the existence of the factors such as construction risk height；The comprehensive haydite of overlay film proppant and the advantage of quartz sand, it has less density and higher intensity, and apparent density is low, easy construction, also has hydrophobic oleophilic oil function and relatively low acid solubility, is the preferable proppant of fracturing.Overlay film proppant is that outer layer coats one or more layers resinous coat using quartz sand or haydite as kernel, is used for improving the performance of proppant.
For overlay film proppant, how to determine and cover the new problem that the wearability of film strength and resin molding is industry research.Traditional detection method can only detect proppant comprcssive strength under static state.Such as, Authorization Notice No. is CN 204514715 U, entitled a kind of device for evaluating fracturing propping agents comprcssive strength, including cylinder and piston, proppant is encased in cylinder, puts into piston, device is put under forcing press proppant is carried out compressive strength test.After having tested, take out proppant and be swept on screen tray, weigh after screening, lose according to the weight of proppant, the ratio shared by broken proppant can be calculated, the comprcssive strength of proppant can be evaluated with this.But, proppant (such as overlay film proppant) is in actual application, overlay film proppant is in kinestate, overlay film proppant in course of conveying with the abrasion of pipeline, in high-speed motion, abrasion also can be produced between overlay film proppant, also can wear and tear between proppant and pipeline, the comprcssive strength under only detection is static can not reflect overlay film proppant anti-wear performance under real conditions.At present, also do not have special device that the overlay film proppant under kinestate is carried out fretting wear.
Summary of the invention
It is an object of the invention to provide a kind of overlay film proppant fretting wear device and carry out fretting wear with the overlay film proppant to kinestate.The present invention also aims to provide a kind of overlay film proppant fretting wear instrument.
In the present invention, the technical scheme of overlay film proppant fretting wear device is: a kind of overlay film proppant fretting wear device, the cylinder extended in left-right direction including length, also including being plugged in inside cylinder or being sheathed on the grinding bar that the pivot center outside cylinder extends in left-right direction, grinding bar includes the grinding body of rod with the barrel for side corresponding with cylinder on the side face of side adjacent with cylinder of being located at the grinding body of rod and matches the spiral friction groove extended in left-right direction with the axis to proppant fretting wear.
Overlay film proppant fretting wear device also includes the rotating conveying lever being coaxially disposed with grinding bar, conveying lever includes carrying the body of rod and being located at the spiral conveying groove that the axis carried on the body of rod extends in left-right direction, the outlet of spiral friction groove is connected with the import of spiral conveying groove, and the outlet of spiral conveying groove is connected with the import of spiral friction groove.
Grinding bar is plugged in inside cylinder, and spiral friction groove is located on the outer peripheral face of the grinding body of rod.
The grinding body of rod is provided with the grinding bar through hole coaxial with grinding bar, and conveying lever is plugged in grinding bar through hole, and spiral conveying groove is located on the outer peripheral face of the conveying body of rod.
Conveying lever is fixing with grinding bar to be connected, and the rotary orientation of spiral friction groove and spiral conveying groove is contrary.
The outer cover of cylinder is provided with heating muff.
The outer cover of heating muff is provided with thermal sleeve.
The quantity of spiral friction groove at least two.
The quantity of spiral conveying groove at least two.
In the present invention, the technical scheme of overlay film proppant fretting wear instrument is: a kind of overlay film proppant fretting wear instrument, including overlay film proppant fretting wear device, overlay film proppant fretting wear device includes the cylinder that length extends in left-right direction, also include being plugged in inside cylinder or being sheathed on the grinding bar that the pivot center outside cylinder extends in left-right direction, grinding bar includes the grinding body of rod with the barrel for side corresponding with cylinder on the side face of side adjacent with cylinder of being located at the grinding body of rod and matches the spiral friction groove extended in left-right direction with the axis to proppant fretting wear, overlay film proppant fretting wear instrument also includes the driving means for driving grinding bar to rotate.
Overlay film proppant fretting wear device also includes the rotating conveying lever being coaxially disposed with grinding bar, conveying lever includes carrying the body of rod and being located at the spiral conveying groove that the axis carried on the body of rod extends in left-right direction, the outlet of spiral friction groove is connected with the import of spiral conveying groove, and the outlet of spiral conveying groove is connected with the import of spiral friction groove.
Grinding bar is plugged in inside cylinder, and spiral friction groove is located on the outer peripheral face of the grinding body of rod.
The grinding body of rod is provided with the grinding bar through hole coaxial with grinding bar, and conveying lever is plugged in grinding bar through hole, and spiral conveying groove is located on the outer peripheral face of the conveying body of rod.
Conveying lever is fixing with grinding bar to be connected, and the rotary orientation of spiral friction groove and spiral conveying groove is contrary.
The outer cover of cylinder is provided with heating muff.
The outer cover of heating muff is provided with thermal sleeve.
The quantity of spiral friction groove at least two.
The quantity of spiral conveying groove at least two.
The invention has the beneficial effects as follows: overlay film proppant fretting wear device includes that length is along the cylinder extended in left-right direction, also including being plugged in inside cylinder or being sheathed on the grinding bar that the pivot center outside cylinder extends in left-right direction, grinding bar includes the grinding body of rod and matches with the spiral friction groove to proppant fretting wear with the barrel for side corresponding with cylinder on the side face of side adjacent with cylinder of being located at the grinding body of rod.In use, proppant is put in spiral friction groove, under grinding bar rotates, proppant moves at spiral friction groove internal coiling, motor process rubs between the barrel of proppant side corresponding with cylinder mutually and produces abrasion, after grinding bar rotates certain time, proppant is taken out, screen with standard screen, just can evaluate the wearability of proppant according to the ratio shared by the proppant of abrasion.In use, proppant under room temperature dry state, the abrasion of proppant under simulation room temperature dry state can directly be sent in spiral friction groove；Also proppant can be mixed in fracturing fluid or other liquid, the fracturing fluid or other liquid that are mixed with proppant are sent into spiral friction groove, with simulation, in pressing crack construction, proppant is in a liquid with the abrasion between pipeline, and liquid can be selected for fracturing fluid, it is possible to select clear water.
Further, overlay film proppant fretting wear device also includes the rotating conveying lever being coaxially disposed with grinding bar, conveying lever includes the spiral conveying groove carrying the body of rod and being located on the conveying body of rod, the outlet of spiral friction groove is connected with the import of spiral conveying groove, the outlet of spiral conveying groove is connected with the import of spiral friction groove, in use, proppant moves to the outlet of spiral friction groove in the motion of spiral friction groove internal coiling from the import of spiral friction groove, import then into spiral conveying groove, it is transported to the outlet of bolt delivery chute in the motion of spiral conveying groove internal coiling, then into spiral friction groove import, proppant circulates between spiral friction groove and spiral conveying groove and can wear and tear proppant continuously, improve the efficiency of device.
Further, the outer cover of cylinder is provided with heating muff, and cylinder is heated to simulate different formation temperatures by heating muff.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of overlay film proppant fretting wear instrument in the present invention；
Fig. 2 is the structural representation of grinding bar in the embodiment of overlay film proppant fretting wear instrument in the present invention；
Fig. 3 is the structural representation of conveying lever in the embodiment of overlay film proppant fretting wear instrument in the present invention.
In figure: 1, conveying lever；2, grinding bar；3, cylinder；4, heating muff；5, thermal sleeve；6, spiral conveying groove；7, spiral friction groove；8, grinding bar through hole；9, the grinding body of rod；10, the conveying body of rod.
Detailed description of the invention
The specific embodiment of overlay film proppant fretting wear instrument in the present invention, as shown in Figure 1 to Figure 3.Overlay film proppant fretting wear instrument includes the cylinder 3 that length extends in left-right direction, and cylinder 3 is made of stainless steel, and cylinder 3 is wear-resisting and is difficult to get rusty.Be fitted with the grinding bar 2 that pivot center extends in left-right direction inside cylinder 3, grinding bar 2 include the grinding body of rod 9 and be located on the outer peripheral face of the grinding body of rod 9 for the spiral friction groove 7 extended in left-right direction with the axis to proppant fretting wear that matches with the inwall of cylinder.The grinding body of rod 9 is provided with the grinding bar through hole 8 coaxial with grinding bar, the conveying lever 1 coaxial with grinding bar 2 it is fitted with in grinding bar through hole 8, grinding bar 2 is fixing with conveying lever 1 to be connected, conveying lever includes the spiral conveying groove 6 that the conveying body of rod 10 and the axis being located on the outer peripheral face of the conveying body of rod 10 extend in left-right direction, the outlet of spiral friction groove is connected with the import of spiral conveying groove, the outlet of spiral conveying groove is connected with the import of spiral friction groove, spiral conveying groove is for being transported to the import of spiral friction groove from the import of spiral conveying groove so that proppant circulates between spiral friction groove and spiral conveying groove by proppant, the rotary orientation of spiral friction groove is dextrorotation, the rotary orientation of spiral conveying groove is derotation, the quantity of spiral friction groove has four, the quantity of spiral conveying groove has four.The outer cover of cylinder 3 is provided with heating muff 4, and the outer cover of heating muff 4 is provided with thermal sleeve 5.Heating muff 4 carries out heating the temperature environment of simulated formation to cylinder 3.
Overlay film proppant fretting wear instrument also includes the driving means for driving grinding bar to rotate, and driving means includes the motor being connected with conveying lever 2.
In use, overlay film proppant is sent in cylinder 3 from the import of spiral friction groove 7, directly can send into proppant under room temperature dry state in spiral friction groove；Also proppant can be mixed in fracturing fluid or other liquid, the fracturing fluid or liquid that are mixed with proppant are sent into spiral friction groove.Under the rotation of grinding bar, overlay film proppant is in spiral friction groove 7 screw, when overlay film proppant moves to the outlet of spiral friction groove 7, overlay film proppant enters into the import of spiral conveying groove 6, overlay film proppant moves at spiral conveying groove 6 internal coiling, when overlay film proppant moves to the outlet of spiral conveying groove 6, overlay film proppant enters into again the import of spiral friction groove 7.As mentioned above, overlay film proppant is iterative motion in spiral friction groove 7 and spiral conveying groove 6, rub between the inwall of overlay film proppant and cylinder 3 and produce abrasion, after grinding bar rotates certain time, use standard screen sieves, and just can evaluate the wearability of overlay film proppant according to the ratio shared by the overlay film proppant of abrasion.The features simple structure of overlay film proppant fretting wear instrument in the present invention, can simulate the abrasion in overlay film proppant fracturing process to greatest extent.By the rotating speed of the rotating speed scalable grinding bar of regulation motor, proppant abrasion condition under different rotating speeds can be simulated.
In the present invention in other embodiments of overlay film proppant fretting wear instrument, the rotary orientation of spiral friction groove is derotation, and the rotary orientation of spiral conveying groove is dextrorotation.
In the present invention in other embodiments of overlay film proppant fretting wear instrument, conveying lever is sheathed on the outside of grinding bar.
In the present invention in other embodiments of overlay film proppant fretting wear instrument, it not fixing connection between grinding bar and conveying lever, can relatively rotate between grinding bar and conveying lever, grinding bar and conveying lever are driven by different driving means respectively, driving means for driving grinding bar to rotate is the first driving means, driving means for driving conveying lever to rotate is the second driving means, spiral friction groove and the rotary orientation of spiral conveying groove can identical also can be contrary.When the rotary orientation of spiral friction groove and spiral conveying groove is contrary, grinding bar and conveying lever rotating in same direction in use.When spiral friction groove is identical with the rotary orientation of spiral conveying groove, grinding bar and conveying lever rotate backward in use.
In the present invention in other embodiments of overlay film proppant fretting wear instrument, grinding bar is sheathed on the outside of cylinder, and spiral friction groove is located on the inner peripheral surface of the grinding body of rod.
In the present invention in other embodiments of overlay film proppant fretting wear instrument, spiral conveying groove is located on the inner peripheral surface of the conveying body of rod.
In the present invention in other embodiments of overlay film proppant fretting wear instrument, it is possible to save conveying lever.
In the present invention in other embodiments of overlay film proppant fretting wear instrument, the quantity of spiral friction groove is not limited to four, and the quantity of spiral friction groove can have one or more than one；The quantity of spiral conveying groove is also not necessarily limited to four, and the quantity of spiral conveying groove can have one or more than one.
In the present invention in the embodiment of overlay film proppant fretting wear device, the structure of overlay film proppant fretting wear device is identical with the structure of overlay film proppant fretting wear device in the embodiment of overlay film proppant fretting wear instrument, no longer repeats at this.
Claims (10)
1. an overlay film proppant fretting wear device, it is characterized in that: include the cylinder that length extends in left-right direction, also including being plugged in inside cylinder or being sheathed on the grinding bar that the pivot center outside cylinder extends in left-right direction, grinding bar includes the grinding body of rod with the barrel for side corresponding with cylinder on the side face of side adjacent with cylinder of being located at the grinding body of rod and matches the spiral friction groove extended in left-right direction with the axis to proppant fretting wear.
Overlay film proppant fretting wear device the most according to claim 1, it is characterized in that: overlay film proppant fretting wear device also includes the rotating conveying lever being coaxially disposed with grinding bar, conveying lever includes carrying the body of rod and being located at the spiral conveying groove that the axis carried on the body of rod extends in left-right direction, the outlet of spiral friction groove is connected with the import of spiral conveying groove, and the outlet of spiral conveying groove is connected with the import of spiral friction groove.
Overlay film proppant fretting wear device the most according to claim 2, it is characterised in that: grinding bar is plugged in inside cylinder, and spiral friction groove is located on the outer peripheral face of the grinding body of rod.
Overlay film proppant fretting wear device the most according to claim 3, it is characterised in that: the grinding body of rod is provided with the grinding bar through hole coaxial with grinding bar, and conveying lever is plugged in grinding bar through hole, and spiral conveying groove is located on the outer peripheral face of the conveying body of rod.
Overlay film proppant fretting wear device the most according to claim 4, it is characterised in that: conveying lever is fixing with grinding bar to be connected, and the rotary orientation of spiral friction groove and spiral conveying groove is contrary.
Overlay film proppant fretting wear device the most according to claim 1, it is characterised in that: the outer cover of cylinder is provided with heating muff.
Overlay film proppant fretting wear device the most according to claim 6, it is characterised in that: the outer cover of heating muff is provided with thermal sleeve.
Overlay film proppant fretting wear device the most according to claim 1, it is characterised in that: the quantity of spiral friction groove at least two.
Overlay film proppant fretting wear device the most according to claim 2, it is characterised in that: the quantity of spiral conveying groove at least two.
10. an overlay film proppant fretting wear instrument, it is characterised in that: include the overlay film proppant fretting wear device as described in any one in claim 1-9, also include the driving means for driving grinding bar to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610384941.9A CN106018144B (en) | 2016-06-02 | 2016-06-02 | A kind of overlay film proppant fretting wear instrument and its overlay film proppant fretting wear device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610384941.9A CN106018144B (en) | 2016-06-02 | 2016-06-02 | A kind of overlay film proppant fretting wear instrument and its overlay film proppant fretting wear device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106018144A true CN106018144A (en) | 2016-10-12 |
| CN106018144B CN106018144B (en) | 2018-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610384941.9A Active CN106018144B (en) | 2016-06-02 | 2016-06-02 | A kind of overlay film proppant fretting wear instrument and its overlay film proppant fretting wear device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568709A (en) * | 2016-11-04 | 2017-04-19 | 中国石油天然气股份有限公司 | Wear detection and evaluation device for coating type pre-cured propping agent |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219969A (en) * | 1995-02-16 | 1996-08-30 | Sumitomo Heavy Ind Ltd | Apparatus for evaluating/testing abrasion resistance |
| CN2674432Y (en) * | 2003-12-31 | 2005-01-26 | 中国铝业股份有限公司 | Measurer for abrasion index of alumina |
| CN202177559U (en) * | 2011-08-05 | 2012-03-28 | 上海大学 | Machine for evaluating and testing abrasion and fatigue resistance of additives |
| CN105510165A (en) * | 2015-12-04 | 2016-04-20 | 中国石油集团川庆钻探工程有限公司 | Erosion evaluation device and testing method for proppant sand clusters in discontinuous sand paving crack |
| CN205656088U (en) * | 2016-06-02 | 2016-10-19 | 河南天祥新材料股份有限公司 | Tectorial membrane proppant friction and wear appearance and tectorial membrane proppant friction and wear device thereof |
-
2016
- 2016-06-02 CN CN201610384941.9A patent/CN106018144B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219969A (en) * | 1995-02-16 | 1996-08-30 | Sumitomo Heavy Ind Ltd | Apparatus for evaluating/testing abrasion resistance |
| CN2674432Y (en) * | 2003-12-31 | 2005-01-26 | 中国铝业股份有限公司 | Measurer for abrasion index of alumina |
| CN202177559U (en) * | 2011-08-05 | 2012-03-28 | 上海大学 | Machine for evaluating and testing abrasion and fatigue resistance of additives |
| CN105510165A (en) * | 2015-12-04 | 2016-04-20 | 中国石油集团川庆钻探工程有限公司 | Erosion evaluation device and testing method for proppant sand clusters in discontinuous sand paving crack |
| CN205656088U (en) * | 2016-06-02 | 2016-10-19 | 河南天祥新材料股份有限公司 | Tectorial membrane proppant friction and wear appearance and tectorial membrane proppant friction and wear device thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568709A (en) * | 2016-11-04 | 2017-04-19 | 中国石油天然气股份有限公司 | Wear detection and evaluation device for coating type pre-cured propping agent |
| CN106568709B (en) * | 2016-11-04 | 2019-09-17 | 中国石油天然气股份有限公司 | Wear detection and evaluation device for coating type pre-cured propping agent |
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| CN106018144B (en) | 2018-09-11 |
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Denomination of invention: A film coated proppant friction and wear instrument and its film coated proppant friction and wear device Effective date of registration: 20231127 Granted publication date: 20180911 Pledgee: Bank of China Limited Gongyi Branch Pledgor: HENAN TIANXIANG NEW MATERIALS Co.,Ltd. Registration number: Y2023980067758 |