CN114836179A - Elastoplastic plugging particles for oil-based drilling fluid and preparation method thereof - Google Patents
Elastoplastic plugging particles for oil-based drilling fluid and preparation method thereof Download PDFInfo
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- CN114836179A CN114836179A CN202110140385.1A CN202110140385A CN114836179A CN 114836179 A CN114836179 A CN 114836179A CN 202110140385 A CN202110140385 A CN 202110140385A CN 114836179 A CN114836179 A CN 114836179A
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- 239000002245 particle Substances 0.000 title claims abstract description 132
- 238000005553 drilling Methods 0.000 title claims abstract description 67
- 239000012530 fluid Substances 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 229920001971 elastomer Polymers 0.000 claims abstract description 70
- 239000005060 rubber Substances 0.000 claims abstract description 70
- 239000002105 nanoparticle Substances 0.000 claims abstract description 32
- 238000005507 spraying Methods 0.000 claims abstract description 27
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 21
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 21
- 239000000839 emulsion Substances 0.000 claims description 14
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 14
- 239000011118 polyvinyl acetate Substances 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 244000043261 Hevea brasiliensis Species 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229920003052 natural elastomer Polymers 0.000 claims description 5
- 229920001194 natural rubber Polymers 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 3
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 3
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 claims description 3
- 229920003051 synthetic elastomer Polymers 0.000 claims description 2
- 239000005061 synthetic rubber Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005489 elastic deformation Effects 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 2
- 238000002791 soaking Methods 0.000 abstract description 2
- 238000009736 wetting Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 53
- 239000000463 material Substances 0.000 description 15
- 230000008569 process Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002657 fibrous material Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses an elastoplasticity plugging particle for oil-based drilling fluid, wherein the inner core of the elastoplasticity plugging particle is a rubber particle with elastoplasticity, and the outer shell of the elastoplasticity plugging particle is coated with inert nano particles. Meanwhile, the invention also provides a preparation method of the elastoplastic plugging particles for the oil-based drilling fluid, which comprises the steps of rubber particle selection, cleaning, surface wetting, ultrasonic vibration spraying and the like. Under the condition of temperature or pressure, the rubber coated with the inert nanoparticles can generate elastic deformation, the effect of plugging pores is good, and the rubber cannot be dissolved in an oil phase due to the fact that the shell is coated with the inert nanoparticles, so that the rubber still has good elastic deformation capability and plugging performance under the condition of long-time high-temperature and high-pressure soaking in the oil-based drilling fluid.
Description
Technical Field
The invention relates to an elastoplastic plugging particle for oil-based drilling fluid and a preparation method thereof, in particular to a plugging material with good elastoplastic property for the oil-based drilling fluid.
Background
In recent years, with the development of oil and gas exploration, deep wells and complex formation wells are gradually increased; various complex accidents frequently occur in the drilling construction process, and the well leakage problem is particularly more prominent. The number, leakage amount and leakage time of the leakage wells are high or not small, the leakage stopping effect is not ideal, huge economic loss is caused, and the process of exploration and development is greatly delayed.
At present, the common plugging materials mainly comprise bridging type plugging materials, high-water-loss plugging materials, temporary plugging materials for protecting production zones, chemical plugging materials, inorganic gelling plugging materials, soft (hard) plugging type plugging materials and the like according to different mechanisms and functions. The use of these lost circulation materials reduces losses due to lost circulation to some extent. In the current development process of shale oil gas, oil-based drilling fluid is usually used, and well leakage often occurs due to the special geological structure and lithologic development characteristics of shale stratum, but the current leakage stoppage of the oil-based drilling fluid lacks a special oil-based drilling fluid leakage stoppage material, the conventional water-based drilling fluid leakage stoppage material is still used, and some elastic leakage stoppage materials for the water-based drilling fluid have oil solubility, can be dissolved in the oil-based drilling fluid, do not have pressure-bearing leakage stoppage performance, and cannot be suitable for the leakage stoppage of the oil-based drilling fluid. Even if the oil-resistant rubber is soaked in the oil-based drilling fluid for a long time, partial dissolution can occur, so that the performance such as rubber strength, elasticity and the like is reduced, and effective plugging cannot be formed or re-leakage is caused in the drilling process. In addition, most of the plugging materials of the water-based drilling fluid are hydrophilic materials, and have poor compatibility with the oil-based drilling fluid, so that the plugging effect is easily influenced by the invasion of the drilling fluid or the performance of the drilling fluid is reversely influenced, and complicated underground accidents are caused.
Disclosure of Invention
The invention aims to overcome the defects of the technology and provides an elastoplastic plugging particle for oil-based drilling fluid and a preparation method thereof.
By changing the non-oil-resistant characteristic of rubber and utilizing the pressure and temperature deformation performance, a stacking plugging layer can be effectively formed in formation cracks and pore throats, so that the cracks and leakage layers are effectively plugged.
The technical scheme of the invention is realized as follows:
an elastoplastic plugging particle for an oil-based drilling fluid comprises an inner core which is an elastoplastic rubber particle, and an outer shell which is coated with inert nanoparticles.
The rubber particles comprise natural rubber or synthetic rubber and have a particle size in the range of 1-5 mm.
The inert nano-particles comprise one or two of nano calcium carbonate or nano silicon dioxide, and the particle size range of the nano-particles is 50-300 nm.
The preparation method of the elastoplastic plugging particles for the oil-based drilling fluid comprises the following steps:
(1) selecting rubber particles with uniform particle size, cleaning and drying;
(2) spraying the rubber particles with acetic acid solution and glycerol solution successively to fully wet the surfaces of all the rubber particles;
(3) placing the wetted rubber particles on a temperature control type ultrasonic vibration sieve, wherein the mesh of the sieve cloth is smaller than the diameter of the rubber particles;
(4) adding the inert nano particles into the polyvinyl acetate emulsion, and fully stirring and mixing;
(5) and (4) opening an ultrasonic vibration screen, uniformly spraying the polyvinyl acetate emulsion containing the inert nanoparticles in the step (4) onto rubber particles by using a spray gun, uniformly spraying, and cooling to room temperature to obtain the elastoplastic plugging particles for the oil-based drilling fluid.
The preparation method of the elastoplastic plugging particles for the oil-based drilling fluid further comprises the following steps:
(1) selecting uniform rubber particles with the particle size range of 1-5mm, cleaning and drying;
(2) spraying 8% acetic acid solution and 5% glycerol solution to the rubber particles, and turning over the rubber particles continuously during spraying to ensure that the surfaces of all the rubber particles are fully wetted;
(3) placing the wetted rubber particles on a temperature control type ultrasonic vibration sieve, wherein the mesh of the sieve cloth is smaller than the diameter of the rubber particles;
(4) adding inert nano particles with the mass fraction of 20-30% into polyvinyl acetate emulsion containing 2-5% of silane coupling agent, and fully stirring and mixing;
(5) opening an ultrasonic vibration sieve, controlling the temperature to be between 55 and 60 ℃, controlling the ultrasonic frequency to be between 20 and 30KHZ and the vibration frequency to be between 45 and 55HZ, uniformly spraying the polyvinyl acetate emulsion containing the inert nano particles onto the rubber particles by using a spray gun, controlling the air pressure of the spray gun to be between 0.2 and 0.3MPa and the diameter of a nozzle to be between 5 and 10mm, and uniformly spraying and cooling to room temperature to obtain the elastoplastic plugging particles for the oil-based drilling fluid.
The silane coupling agent comprises vinyltriethoxysilane, vinyltrimethoxysilane or vinyltris (beta-methoxyethoxy) silane.
The elasto-plastic plugging particles are mainly used as a plugging agent for oil-based drilling fluid, and compared with the prior art, the elasto-plastic plugging particles have the following advantages: compared with the existing elastic plugging material, the elastoplastic plugging particles for the oil-based drilling fluid have better oil resistance and higher strength, and still have good elastic deformation capability and plugging performance under the condition of long-time high-temperature and high-pressure soaking in the oil-based drilling fluid. Under the bottom hole condition, the elastic inner core of the elastic-plastic plugging particles can deform, and the inert particles coated on the surface of the inner core cannot fall off and can be tightly attached to the surface of the rubber inner core, so that the rubber particles and the oil phase are prevented from being dissolved mutually. The inert particles coated on the surface also greatly increase the strength of the elastic core, and the pressure-bearing capacity is higher.
Detailed Description
The present invention is further illustrated by the following examples, but the present invention is not limited to these examples. And (3) inspecting the plugging performance of the elastoplastic plugging particles in the oil-based drilling fluid by adopting a plugging evaluation simulation experiment device.
Example 1
An elastoplastic plugging particle for an oil-based drilling fluid comprises an inner core which is an elastoplastic rubber particle, and an outer shell which is coated with inert nanoparticles. Wherein the rubber particles are natural rubber, and the particle size range is 1-3 mm; the inert nano-particles are nano calcium carbonate, and the particle size range of the nano-particles is 50-100 nm.
The preparation method of the elastoplastic plugging particles for the oil-based drilling fluid comprises the following steps:
(1) selecting uniform rubber particles with the particle size range of 1-3mm, cleaning and drying;
(2) spraying 8% acetic acid solution and 5% glycerol solution to the rubber particles, and turning over the rubber particles continuously during spraying to ensure that the surfaces of all the rubber particles are fully wetted;
(3) placing the wetted rubber particles on a temperature-controlled ultrasonic vibration sieve, wherein the mesh openings of the sieve cloth are smaller than the diameter of the rubber particles so as to prevent leakage;
(4) adding inert nano particles with the mass fraction of 20% into polyvinyl acetate emulsion containing 2% of silane coupling agent, and fully stirring and mixing;
(5) opening an ultrasonic vibration sieve, controlling the temperature to be 55 ℃, controlling the ultrasonic frequency to be 20KHZ and the vibration frequency to be 45HZ, uniformly spraying the polyvinyl acetate emulsion containing the inert nanoparticles onto the rubber particles by using a spray gun, controlling the air pressure of the spray gun to be 0.2MPa, controlling the diameter of a nozzle to be 5mm, and uniformly spraying and cooling to room temperature to obtain the elastoplastic plugging particles for the oil-based drilling fluid.
An oil-based plugging drilling fluid comprises the following components: 5 percent of elastoplastic plugging particles (with the particle size of 1-3 mm) for the oil-based drilling fluid are added into the oil-based drilling fluid.
Example 2
An elastoplastic plugging particle for an oil-based drilling fluid comprises an inner core which is an elastoplastic rubber particle, and an outer shell which is coated with inert nanoparticles. Wherein the rubber particles are natural rubber, and the particle size range is 3-5 mm; the inert nano-particles are nano calcium carbonate, and the particle size range of the nano-particles is 100-200 nm.
The preparation method of the elastoplastic plugging particles for the oil-based drilling fluid comprises the following steps:
(1) selecting uniform rubber particles with the particle size range of 3-5mm, cleaning and drying;
(2) spraying 8% acetic acid solution and 5% glycerol solution to the rubber particles, and turning over the rubber particles continuously during spraying to ensure that the surfaces of all the rubber particles are fully wetted;
(3) placing the wetted rubber particles on a temperature-controlled ultrasonic vibration sieve, wherein the mesh openings of the sieve cloth are smaller than the diameter of the rubber particles so as to prevent leakage;
(4) adding 30 mass percent of inert nano particles into polyvinyl acetate emulsion containing 2.5 mass percent of silane coupling agent, and fully stirring and mixing;
(5) opening an ultrasonic vibration sieve, controlling the temperature to be 55 ℃, controlling the ultrasonic frequency to be 25KHZ and the vibration frequency to be 50HZ, uniformly spraying the polyvinyl acetate emulsion containing the inert nanoparticles onto the rubber particles by using a spray gun, controlling the air pressure of the spray gun to be 0.3MPa, controlling the diameter of a nozzle to be 8mm, and uniformly spraying and cooling to room temperature to obtain the elastoplastic plugging particles for the oil-based drilling fluid.
An oil-based plugging drilling fluid comprises the following components: the oil-based drilling fluid is added with 2% by mass of elastoplastic plugging particles for the oil-based drilling fluid (the particle size is 3-5mm in example 2) and 3% by mass of elastoplastic plugging particles for the oil-based drilling fluid (the particle size is 1-3mm in example 1).
Example 3
An elastoplastic plugging particle for an oil-based drilling fluid comprises an inner core which is an elastoplastic rubber particle, and an outer shell which is coated with inert nanoparticles. Wherein the rubber particles are natural rubber, and the particle size range is 1-3 mm; the inert nano-particles are nano calcium carbonate, and the particle size range of the nano-particles is 50-100 nm.
The preparation method of the elastoplastic plugging particles for the oil-based drilling fluid comprises the following steps:
(1) selecting uniform rubber particles with the particle size range of 1-3mm, cleaning and drying;
(2) spraying 8% acetic acid solution and 5% glycerol solution to the rubber particles, and turning over the rubber particles continuously during spraying to ensure that the surfaces of all the rubber particles are fully wetted;
(3) placing the wetted rubber particles on a temperature-controlled ultrasonic vibration sieve, wherein the mesh openings of the sieve cloth are smaller than the diameter of the rubber particles so as to prevent leakage;
(4) adding 30% by mass of inert nanoparticles into polyvinyl acetate emulsion containing 5% of silane coupling agent, and fully stirring and mixing;
(5) opening an ultrasonic vibration sieve, controlling the temperature to be 60 ℃, controlling the ultrasonic frequency to be 30KHZ and the vibration frequency to be 55HZ, uniformly spraying the polyvinyl acetate emulsion containing the inert nanoparticles onto the rubber particles by using a spray gun, controlling the air pressure of the spray gun to be 0.25MPa, controlling the diameter of a nozzle to be 10mm, and uniformly spraying and cooling to room temperature to obtain the elastoplastic plugging particles for the oil-based drilling fluid.
An oil-based plugging drilling fluid comprises the following components: the elasto-plastic plugging particles (example 3, particle size 1-3 m) for the oil-based drilling fluid with the mass fraction of 3 percent and the fibrous material with the mass fraction of 2 percent are added into the oil-based drilling fluid.
The silane coupling agent described in the above examples is preferably one of vinyltriethoxysilane, vinyltrimethoxysilane or vinyltris (. beta. -methoxyethoxy) silane.
Comparative example 1
An oil-based plugging drilling fluid comprises the following components: rubber particles (with the particle size of 1-3 m) with the mass fraction of 5 are added into the oil-based drilling fluid.
Comparative example 2
An oil-based plugging drilling fluid comprises the following components: rubber particles (with the particle size of 1-3 m) with the mass fraction of 3% and fibrous materials with the mass fraction of 2% are added into the oil-based drilling fluid.
The experimental method comprises the following steps: 3L of oil-based slurry is added into a plugging simulation device to evaluate the plugging capability of the wedge-shaped crack with the width of 5 multiplied by 4 mm. The experimental temperature is 150 ℃, the experimental pressure is 5MPa, and the change relation of the pressure along with the time is recorded.
As can be seen from the data in Table 1, compared with the comparative example, the elastoplastic plugging particles for the oil-based drilling fluid have better pressure-bearing plugging performance under the conditions of high temperature and high pressure and smaller pressure drop under the long-time pressure-bearing condition, and show that the elastoplastic plugging particles for the oil-based drilling fluid have better long-term pressure-bearing capacity in the oil-based drilling fluid.
Claims (8)
1. An elastoplastic plugging particle for an oil-based drilling fluid, which is characterized in that the exterior of the plugging particle is coated with inert nano particles.
2. The elasto-plastic plugging particle for the oil-based drilling fluid as claimed in claim 1, wherein the plugging particle is a rubber particle with elasto-plastic properties.
3. The elasto-plastic plugging particle for the oil-based drilling fluid of claim 2, wherein the rubber particle is natural rubber or synthetic rubber.
4. The elastoplastic plugging particle for the oil-based drilling fluid as claimed in claim 2, wherein the rubber particle size is in the range of 1-5 mm.
5. The elasto-plastic plugging particle for the oil-based drilling fluid according to any one of claims 1 to 4, wherein the inert nanoparticle comprises one or both of nano calcium carbonate or nano silica, and the particle size of the nanoparticle is in the range of 50 to 300 nm.
6. The preparation method of the elastoplastic plugging particles for the oil-based drilling fluid is characterized by comprising the following steps:
(1) selecting rubber particles with uniform particle size, cleaning and drying;
(2) spraying the rubber particles with acetic acid solution and glycerol solution successively to fully wet the surfaces of all the rubber particles;
(3) placing the wetted rubber particles on a temperature control type ultrasonic vibration sieve, wherein the mesh of the sieve cloth is smaller than the diameter of the rubber particles;
(4) adding the inert nano particles into the polyvinyl acetate emulsion, and fully stirring and mixing;
(5) and (4) opening an ultrasonic vibration screen, uniformly spraying the polyvinyl acetate emulsion containing the inert nanoparticles in the step (4) onto rubber particles by using a spray gun, uniformly spraying, and cooling to room temperature to obtain the elastoplastic plugging particles for the oil-based drilling fluid.
7. The preparation method of the elastoplastic plugging particle for the oil-based drilling fluid, which is characterized by comprising the following steps of:
(1) selecting uniform rubber particles with the particle size range of 1-5mm, cleaning and drying;
(2) spraying 8% acetic acid solution and 5% glycerol solution to the rubber particles, and turning over the rubber particles continuously during spraying to ensure that the surfaces of all the rubber particles are fully wetted;
(3) placing the wetted rubber particles on a temperature control type ultrasonic vibration sieve, wherein the mesh of the sieve cloth is smaller than the diameter of the rubber particles;
(4) adding inert nano particles with the mass fraction of 20-30% into polyvinyl acetate emulsion containing 2-5% of silane coupling agent, and fully stirring and mixing;
(5) opening an ultrasonic vibration sieve, controlling the temperature to be between 55 and 60 ℃, controlling the ultrasonic frequency to be between 20 and 30KHZ and the vibration frequency to be between 45 and 55HZ, uniformly spraying the polyvinyl acetate emulsion containing the inert nano particles onto the rubber particles by using a spray gun, controlling the air pressure of the spray gun to be between 0.2 and 0.3MPa and the diameter of a nozzle to be between 5 and 10mm, and uniformly spraying and cooling to room temperature to obtain the elastoplastic plugging particles for the oil-based drilling fluid.
8. The method for preparing the elasto-plastic plugging particle for the oil-based drilling fluid according to claim 6 or 7, wherein the silane coupling agent comprises vinyltriethoxysilane, vinyltrimethoxysilane or vinyltris (β -methoxyethoxy) silane.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110140385.1A CN114836179A (en) | 2021-02-02 | 2021-02-02 | Elastoplastic plugging particles for oil-based drilling fluid and preparation method thereof |
| US17/997,074 US20230242804A1 (en) | 2021-02-02 | 2021-02-04 | Coated Rubber Particle, Its Preparation and Application Thereof |
| PCT/CN2021/075349 WO2022165726A1 (en) | 2021-02-02 | 2021-02-04 | Coated rubber particle, preparation method therefor and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110140385.1A CN114836179A (en) | 2021-02-02 | 2021-02-02 | Elastoplastic plugging particles for oil-based drilling fluid and preparation method thereof |
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| CN114836179A true CN114836179A (en) | 2022-08-02 |
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| CN202110140385.1A Pending CN114836179A (en) | 2021-02-02 | 2021-02-02 | Elastoplastic plugging particles for oil-based drilling fluid and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115445879A (en) * | 2022-10-08 | 2022-12-09 | 常州市第一橡塑设备有限公司 | Manufacturing method of high-strength petroleum fracturing pump shell |
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- 2021-02-02 CN CN202110140385.1A patent/CN114836179A/en active Pending
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| US20070207335A1 (en) * | 2004-07-30 | 2007-09-06 | Karandikar Bhalchandra M | Methods and compositions for metal nanoparticle treated surfaces |
| US20150133593A1 (en) * | 2011-12-08 | 2015-05-14 | Kyle Ryan Kissell | Nano-enhanced elastomers |
| US20150008044A1 (en) * | 2013-07-05 | 2015-01-08 | James Blair Fontenot | Lost Circulation Drilling Fluids Comprising Elastomeric Rubber Particles and a Method for Decreasing Whole Mud Loss Using Such Composition |
| CN111303845A (en) * | 2020-03-30 | 2020-06-19 | 中国石油天然气集团有限公司 | Preparation method and application of while-drilling plugging agent for oil-based drilling fluid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445879A (en) * | 2022-10-08 | 2022-12-09 | 常州市第一橡塑设备有限公司 | Manufacturing method of high-strength petroleum fracturing pump shell |
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