CN102786922A - Method for preparing high-strength oil fracturing proppant by high-iron bauxite - Google Patents
Method for preparing high-strength oil fracturing proppant by high-iron bauxite Download PDFInfo
- Publication number
- CN102786922A CN102786922A CN2012103022179A CN201210302217A CN102786922A CN 102786922 A CN102786922 A CN 102786922A CN 2012103022179 A CN2012103022179 A CN 2012103022179A CN 201210302217 A CN201210302217 A CN 201210302217A CN 102786922 A CN102786922 A CN 102786922A
- Authority
- CN
- China
- Prior art keywords
- bauxite
- iron
- iron bauxite
- strength
- granularity
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention provides a method for preparing high-strength oil fracturing proppant by high-iron bauxite. The high-iron bauxite is used as a raw material; and the main chemical ingredients of the high-iron bauxite comprise the components by weight: 30-60% of Al2O3, 10-30% of Fe, 1-5% of TiO2 and 1-5% of SiO2. The production method of the proppant comprises the following steps of: crushing the high-iron bauxite, adding a reducing agent according to a certain ratio, and putting the reducing agent into an atmosphere furnace to bake and magnetically separate; and putting the magnetically separated bauxite and various auxiliary materials into an airstream crusher according to the certain ratio, fully mixing and crushing, then carrying out granulation process through a disc pelletizer, obtaining green pellet-shaped ware bodies with proper grain size, and sintering the green pellet-shaped ware bodies by a rotary kiln to obtain the high-strength oil fracturing proppant product. The method is simple in process; the prices of the used raw materials are low; the sources are wide; the production cost is low; the magnetization roasting temperature is lower than that of a traditional process; the energy is saved; and the method is environment-friendly.
Description
Technical field
The present invention relates to a kind ofly prepare the method for high-strength compress supporting agent for coarse oil, belong to new material technology field by high-iron bauxite.
Background technology
Petroleum fracturing propping agent is to make the deep layer rock keep the support material of the state of splitting, and is mainly used in the exploitation of petroleum and natural gas deep-well.During the oil and gas deep mining, high locking pressure low-permeability mineral deposit splits petroliferous strata after fracture treatment, and oil gas compiles from the crack.Get into the stratum with propping material in company with high-pressure solution and be filled in the rock crack, can play make support the crack not stress discharge and closed effect, thereby keep high flow conductivity, make oil gas unimpeded, increase output.
Petroleum fracturing propping agent commonly used at present has the composite particles of silica sand, haydite and various resin-coated etc.Wherein the price of silica sand is the most cheap, and specific density is lower, but the intensity of silica sand is low, sphericity is poor, thereby has reduced fissured flow conductivity, is not suitable for the high deep-well of locking pressure especially.And the composite particles of employing resin-coated silica sand, sphericity has improvement, and erosion resistance can reach than high target, even inner silica sand is crushed, the resin layer that the outside coats can wrap fragment, keeps fissured flow conductivity.But this shelf life of products is short, and cost is high.
Summary of the invention
High-iron bauxite to present complicated ingredient can not be directly as the deficiency of feedstock production petroleum fracturing propping agent, and the present invention provides a kind of method that is prepared high-strength compress supporting agent for coarse oil by high-iron bauxite.
The present invention is achieved through following technical proposals: a kind ofly prepare the method for high-strength compress supporting agent for coarse oil by high-iron bauxite, it is characterized in that adopting high-iron bauxite as raw material, its weight ratio of constituents is: Al
2O
3: 30 ~ 60%, Fe:10 ~ 30%, TiO
2: 1 ~ 5%, SiO
2: 1 ~ 5%; Step is following:
1) high-iron bauxite is crushed to granularity and reaches 50～300 orders, add reductive agent according to a certain percentage, and in atmosphere furnace, carry out magnetizing roasting, maturing temperature is controlled at 300～800 ℃;
2) high-iron bauxite after the magnetizing roasting is carried out iron removal by magnetic separation, magnetic separation strength is: 5000 ~ 14000GS;
3) press 5 ~ 20% of bauxite gross weight behind the iron removal by magnetic separation and add various auxiliary materials, mix;
4) after mixed mixture gets into and pulverizes in the micronizer mill, get into granulation in the granulating disc, obtain the suitable pellet green compact of granularity;
5) the pellet green compact drop in the rotary kiln, the temperature and the rotating speed of control burner, stove tail, and roasting just can reach qualified petroleum fracturing propping agent product after finishing.
Preferred version of the present invention is following:
The reductive agent that described magnetizing roasting process adopted is materials such as gac, charcoal, bituminous coal, coke, refinery coke, iron powder, and the part by weight of high-iron bauxite and reductive agent is 1:0.5 ~ 0.05.
Described various auxiliary material is materials such as SILICA FUME, Manganse Dioxide, white titanium pigment, magnesiumcarbonate or Natural manganese dioxide, ZIRCONIUM DIOXIDE 99.5, aluminium ash; Wherein the part by weight of each auxiliary material is a SILICA FUME: 0.1% ~ 60%; Manganse Dioxide: 0.1% ~ 10%, white titanium pigment: 0.1% ~ 20%, magnesiumcarbonate or Natural manganese dioxide: 0.1% ~ 10%; ZIRCONIUM DIOXIDE 99.5: 0.1% ~ 10%, aluminium ash: 1% ~ 50%.
The granularity of the material after described micronizer mill comes out is 5 ~ 100 μ m, and the granularity of the pellet green compact that granulating disc comes out is 0.2 ~ 1.0 mm.
The temperature of the burner of described rotary kiln is 1000 ~ 1500 ℃, and the temperature of stove tail is 500 ~ 1000 ℃, and the rotating speed of rotary kiln is 0.3 ~ 2 m/h.
The present invention utilizes high-iron bauxite low as its density of petroleum fracturing propping agent of feedstock production, and ultimate compression strength is big, can effectively solve the problem of current ultimate compression strength deficiency and refluence ability.Complete processing is simple, and facility investment is little, energy consumption is little, and the cost of material of employing is cheap and the wide material sources production cost is low.Utilize the technology of magnetization deironing, solved the deficiency that high-iron bauxite can not directly prepare propping agent as raw material, and the magnetizing roasting temperature is than the low saving of traditional technology energy consumption.Waste water and waste that whole process produces are few, environmental protection.Pick out the auxiliary material of superior performance through experimental study, increased each item performance of propping agent greatly, its product can be applied in the actual production.
Embodiment
Embodiment one
1) high-iron bauxite is carried out fragmentation, getting the 500g granularity is in atmosphere furnace, to carry out magnetizing roasting after 50 purpose bauxite mix with the 30g charcoal, and maturing temperature is 550 ℃.Roasting finishes the back material and carries out iron removal by magnetic separation, and the magnetic separation parameter is: 11000 ~ 12000GS.
2) bauxite behind the iron removal by magnetic separation mixes with various auxiliary materials according to a certain percentage, and the total weight percent of various auxiliary materials is 10%, SILICA FUME in the wherein various auxiliary materials: 50%; Manganse Dioxide: 5%; White titanium pigment: 5%; Magnesiumcarbonate or Natural manganese dioxide: 4.5%; ZIRCONIUM DIOXIDE 99.5: 0.5%; Aluminium ash: 35%.
3) after mixed mixture gets into and is crushed to raw meal particle size 10 ~ 20 μ m in the micronizer mill, get into granulation in the granulating disc, obtain the pellet green compact of granularity 0.2 ~ 1.0 mm.
4) the pellet green compact drop in the rotary kiln, 1400 ℃ of end flue temperatures of control, 1000 ℃ of stove tail temperature, rotating speed 1 m/h.Roasting finishes the back and obtains the petroleum fracturing propping agent product.
Through detecting, each index of product is following: ultimate compression strength: >=40MPa; Locking pressure: >=65MPa; Acid solubility:＜4.5%; Particle diameter: 0.40 ~ 0.50 mm; Percentage of damage:＜3.5%; Sphericity and circularity: >=0.8.
Embodiment two
1) high-iron bauxite is carried out fragmentation, getting the 500g granularity is in atmosphere furnace, to carry out magnetizing roasting after 50 purpose bauxite mix with the 80g coke, and maturing temperature is 650 ℃.Roasting finishes the back material and carries out iron removal by magnetic separation, and the magnetic separation parameter is: 8000 ~ 10000GS.
2) bauxite behind the iron removal by magnetic separation mixes with various auxiliary materials according to a certain percentage, and the total weight percent of various auxiliary materials is 5%, SILICA FUME in the wherein various auxiliary materials: 45%; Manganse Dioxide: 5%; White titanium pigment: 5%; Magnesiumcarbonate or Natural manganese dioxide: 4.5%; ZIRCONIUM DIOXIDE 99.5: 0.5%; Aluminium ash: 40%.
3) after mixed mixture gets into and is crushed to raw meal particle size 10 ~ 20 μ m in the micronizer mill, get into granulation in the granulating disc, obtain the pellet green compact of granularity 0.2 ~ 1.0 mm.
4) the pellet green compact drop in the rotary kiln, 1200 ℃ of end flue temperatures of control, 800 ℃ of stove tail temperature, rotating speed 1.5 m/h.Roasting finishes the back and obtains the petroleum fracturing propping agent product.
Through detecting, each index of product is following: ultimate compression strength: >=50MPa; Locking pressure: >=65MPa; Acid solubility:＜4.0%; Particle diameter: 0.45 ~ 0.55 mm; Percentage of damage:＜3.0%; Sphericity and circularity: >=0.9.
Embodiment three
1) high-iron bauxite is carried out fragmentation, getting the 500g granularity is in atmosphere furnace, to carry out magnetizing roasting after 50 purpose bauxite mix with the 100g refinery coke, and maturing temperature is 450 ℃.Roasting finishes the back material and carries out iron removal by magnetic separation, and the magnetic separation parameter is: 13000 ~ 15000GS;
2) bauxite behind the iron removal by magnetic separation mixes with various auxiliary materials according to a certain percentage, and the total weight percent of various auxiliary materials is 5%, SILICA FUME in the wherein various auxiliary materials: 35%; Manganse Dioxide: 5%; White titanium pigment: 15%; Magnesiumcarbonate or Natural manganese dioxide: 14.5%; ZIRCONIUM DIOXIDE 99.5: 0.5%; Aluminium ash: 35%.
3) after mixed mixture gets into and is crushed to raw meal particle size 40 ~ 50 μ m in the micronizer mill, get into granulation in the granulating disc, obtain the pellet green compact of granularity 0.2 ~ 1.0 mm.
4) the pellet green compact drop in the rotary kiln, 1300 ℃ of end flue temperatures of control control, 700 ℃ of stove tail temperature, rotating speed 0.8 m/h.Roasting finishes the back and obtains the petroleum fracturing propping agent product.
Through detecting, each index of product is following: ultimate compression strength: >=45MPa; Locking pressure: >=65MPa; Acid solubility:＜4.2%; Particle diameter: 0.50 ~ 0.60 mm; Percentage of damage:＜3.3%; Sphericity and circularity: >=0.9.
Claims (5)
1. one kind prepares the method for high-strength compress supporting agent for coarse oil by high-iron bauxite, it is characterized in that adopting high-iron bauxite as raw material, and its weight ratio of constituents is: Al
2O
3: 30 ~ 60%, Fe:10 ~ 30%, TiO
2: 1 ~ 5%, SiO
2: 1 ~ 5%; Step is following:
1) high-iron bauxite is crushed to granularity and reaches 50～300 orders, add reductive agent according to a certain percentage, and in atmosphere furnace, carry out magnetizing roasting, maturing temperature is controlled at 300～800 ℃;
2) high-iron bauxite after the magnetizing roasting is carried out iron removal by magnetic separation, magnetic separation strength is: 5000 ~ 14000GS;
3) press 5 ~ 20% of bauxite gross weight behind the iron removal by magnetic separation and add various auxiliary materials, mix;
4) after mixed mixture gets into and pulverizes in the micronizer mill, get into granulation in the granulating disc, obtain the suitable pellet green compact of granularity;
5) the pellet green compact drop in the rotary kiln, the temperature and the rotating speed of control burner, stove tail, and roasting just can reach qualified petroleum fracturing propping agent product after finishing.
2. the method for preparing high-strength compress supporting agent for coarse oil by high-iron bauxite as claimed in claim 1; It is characterized in that: the reductive agent that the magnetizing roasting process adopted is materials such as gac, charcoal, bituminous coal, coke, refinery coke, iron powder, and the part by weight of high-iron bauxite and reductive agent is 1:0.5 ~ 0.05.
3. the method for preparing high-strength compress supporting agent for coarse oil by high-iron bauxite as claimed in claim 1; It is characterized in that: described various auxiliary materials are materials such as SILICA FUME, Manganse Dioxide, white titanium pigment, magnesiumcarbonate or Natural manganese dioxide, ZIRCONIUM DIOXIDE 99.5, aluminium ash, and wherein the part by weight of each auxiliary material is a SILICA FUME: 0.1% ~ 60%, and Manganse Dioxide: 0.1% ~ 10%; White titanium pigment: 0.1% ~ 20%; Magnesiumcarbonate or Natural manganese dioxide: 0.1% ~ 10%, ZIRCONIUM DIOXIDE 99.5: 0.1% ~ 10%, aluminium ash: 1% ~ 50%.
4. the method for preparing high-strength compress supporting agent for coarse oil by high-iron bauxite as claimed in claim 1; It is characterized in that: the granularity of the material after micronizer mill comes out is 5 ~ 100 μ m, and the granularity of the pellet green compact that granulating disc comes out is 0.2 ~ 1.0 mm.
5. as claimed in claim 1ly prepare the method for high-strength compress supporting agent for coarse oil by high-iron bauxite, it is characterized in that: the temperature of the burner of rotary kiln is 1000 ~ 1500 ℃, and the temperature of stove tail is 500 ~ 1000 ℃, and the rotating speed of rotary kiln is 0.3 ~ 2 m/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210302217.9A CN102786922B (en) | 2012-08-23 | 2012-08-23 | Method for preparing high-strength oil fracturing proppant by high-iron bauxite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210302217.9A CN102786922B (en) | 2012-08-23 | 2012-08-23 | Method for preparing high-strength oil fracturing proppant by high-iron bauxite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102786922A true CN102786922A (en) | 2012-11-21 |
| CN102786922B CN102786922B (en) | 2014-02-12 |
Family
ID=47152515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210302217.9A Active CN102786922B (en) | 2012-08-23 | 2012-08-23 | Method for preparing high-strength oil fracturing proppant by high-iron bauxite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102786922B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925134A (en) * | 2012-11-29 | 2013-02-13 | 昆明冶金研究院 | Method for preparing high-strength petroleum fracturing propping agent by use of high-iron low-grade bauxite |
| CN102942368A (en) * | 2012-11-29 | 2013-02-27 | 昆明冶金研究院 | Method for preparing high-strength petroleum fracturing propping agent from low-grade bauxite |
| CN103242819A (en) * | 2013-05-31 | 2013-08-14 | 三门峡方圆实业股份有限公司 | Ultrahigh-density ceramsite proppant and preparation method thereof |
| CN103922710A (en) * | 2014-04-22 | 2014-07-16 | 攀枝花秉扬科技开发有限公司 | Low-density and high-strength ceramic particle and manufacture method thereof |
| CN109382202A (en) * | 2018-09-20 | 2019-02-26 | 江西铜业集团有限公司 | A kind of method that iron content fluorine carbon cerium mischmetal concentrate removes iron upgrading |
| CN109395712A (en) * | 2018-12-07 | 2019-03-01 | 昆明冶金研究院 | A kind of aluminum-based catalyst agent carrier and preparation method thereof |
| CN111621638A (en) * | 2020-06-03 | 2020-09-04 | 东北大学 | Suspension roasting system for strengthening reduction of iron-containing materials through heating and cracking |
| CN113582676A (en) * | 2021-08-31 | 2021-11-02 | 西南科技大学 | Magnesium aluminum silicate proppant and production process and application thereof |
| CN113649523A (en) * | 2021-08-18 | 2021-11-16 | 贵州黄平富城实业有限公司 | Raw material ore pretreatment process for bauxite processing |
| CN114133223A (en) * | 2022-01-07 | 2022-03-04 | 山东理工大学 | Energy-saving and environment-friendly low-cost ceramsite proppant and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2737749C1 (en) * | 2020-01-31 | 2020-12-02 | ПВТ Эволюшн Лимитед | Method of producing proppant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844298A (en) * | 2006-04-05 | 2006-10-11 | 渑池县方圆陶粒砂厂 | Super strength ceramic aggregate proppant and method for preparing same |
| CN101168660A (en) * | 2007-12-09 | 2008-04-30 | 宜兴东方石油支撑剂有限公司 | High-density high-strength pressure crack proppant |
| CN101270280A (en) * | 2008-04-30 | 2008-09-24 | 新密市万力实业发展有限公司 | Fracturing propping agent for oil gas well and preparation method thereof |
| US20090288820A1 (en) * | 2008-05-20 | 2009-11-26 | Oxane Materials, Inc. | Method Of Manufacture And The Use Of A Functional Proppant For Determination Of Subterranean Fracture Geometries |
-
2012
- 2012-08-23 CN CN201210302217.9A patent/CN102786922B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844298A (en) * | 2006-04-05 | 2006-10-11 | 渑池县方圆陶粒砂厂 | Super strength ceramic aggregate proppant and method for preparing same |
| CN101168660A (en) * | 2007-12-09 | 2008-04-30 | 宜兴东方石油支撑剂有限公司 | High-density high-strength pressure crack proppant |
| CN101270280A (en) * | 2008-04-30 | 2008-09-24 | 新密市万力实业发展有限公司 | Fracturing propping agent for oil gas well and preparation method thereof |
| US20090288820A1 (en) * | 2008-05-20 | 2009-11-26 | Oxane Materials, Inc. | Method Of Manufacture And The Use Of A Functional Proppant For Determination Of Subterranean Fracture Geometries |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925134A (en) * | 2012-11-29 | 2013-02-13 | 昆明冶金研究院 | Method for preparing high-strength petroleum fracturing propping agent by use of high-iron low-grade bauxite |
| CN102942368A (en) * | 2012-11-29 | 2013-02-27 | 昆明冶金研究院 | Method for preparing high-strength petroleum fracturing propping agent from low-grade bauxite |
| CN103242819A (en) * | 2013-05-31 | 2013-08-14 | 三门峡方圆实业股份有限公司 | Ultrahigh-density ceramsite proppant and preparation method thereof |
| CN103242819B (en) * | 2013-05-31 | 2016-06-01 | 三门峡方圆实业股份有限公司 | A kind of Ultrahigh-density ceramsite proppant and its preparation method |
| CN103922710A (en) * | 2014-04-22 | 2014-07-16 | 攀枝花秉扬科技开发有限公司 | Low-density and high-strength ceramic particle and manufacture method thereof |
| CN103922710B (en) * | 2014-04-22 | 2015-03-11 | 攀枝花秉扬科技开发有限公司 | Low-density and high-strength ceramic particle and manufacture method thereof |
| CN109382202A (en) * | 2018-09-20 | 2019-02-26 | 江西铜业集团有限公司 | A kind of method that iron content fluorine carbon cerium mischmetal concentrate removes iron upgrading |
| CN109395712A (en) * | 2018-12-07 | 2019-03-01 | 昆明冶金研究院 | A kind of aluminum-based catalyst agent carrier and preparation method thereof |
| CN111621638A (en) * | 2020-06-03 | 2020-09-04 | 东北大学 | Suspension roasting system for strengthening reduction of iron-containing materials through heating and cracking |
| CN111621638B (en) * | 2020-06-03 | 2021-08-06 | 东北大学 | Suspension roasting system for strengthening reduction of iron-containing materials through heating and cracking |
| CN113649523A (en) * | 2021-08-18 | 2021-11-16 | 贵州黄平富城实业有限公司 | Raw material ore pretreatment process for bauxite processing |
| CN113582676A (en) * | 2021-08-31 | 2021-11-02 | 西南科技大学 | Magnesium aluminum silicate proppant and production process and application thereof |
| CN114133223A (en) * | 2022-01-07 | 2022-03-04 | 山东理工大学 | Energy-saving and environment-friendly low-cost ceramsite proppant and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102786922B (en) | 2014-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102786922B (en) | Method for preparing high-strength oil fracturing proppant by high-iron bauxite | |
| US10442738B2 (en) | Ceramic proppant and method for producing same | |
| CN106747600B (en) | The sintering ceramsite and method prepared using phosphorus tailing as primary raw material | |
| CN104479665A (en) | Petroleum proppant and preparation method thereof | |
| CN102061159A (en) | High-density high-strength fracturing propping agent for oil and gas wells and preparation method thereof | |
| CN105925257B (en) | A kind of low-density ceramic proppant and preparation method thereof | |
| CN104194768A (en) | Economic ceramsite oil gas fracturing propping agent and preparation method thereof | |
| CN102732245B (en) | Low-density ceramsite proppant and method for preparing same | |
| CN103468239B (en) | The Low-density high-intensity ceramsite proppant and preparation method thereof being raw material with flint clay | |
| US20160053162A1 (en) | Method of manufacturing of light ceramic proppants and light ceramic proppants | |
| CN102796509A (en) | Ceramic proppant prepared from low-grade bauxite and method for preparing ceramic proppant | |
| CN102942368A (en) | Method for preparing high-strength petroleum fracturing propping agent from low-grade bauxite | |
| CN102925134A (en) | Method for preparing high-strength petroleum fracturing propping agent by use of high-iron low-grade bauxite | |
| CN103145402B (en) | Utilize proppant prepared by the mine tailing of boron rock and iron ore and preparation method thereof | |
| CN103756665B (en) | A kind of take flint clay as low-density propping agent of raw material and preparation method thereof | |
| CN104130764B (en) | Additive for fracturing propping agent, fracturing propping agent and preparation method | |
| RU2521989C1 (en) | High-strength magnesium silicate proppant obtaining method | |
| CN104893706B (en) | The ceramsite sand of high-density high-strength is prepared using bauxite abandoned mine slag | |
| CN103468240A (en) | Ultralow-density ceramsite proppant with flint clay tailings as raw materials and preparation method of ultralow-density ceramsite proppant | |
| CN108046756B (en) | Method for preparing fracturing ceramsite proppant by utilizing vanadium titano-magnetite pre-concentration tailings | |
| CN102676151B (en) | Ultra-low-density ceramic proppant taking pebbles as main additive and preparation method thereof | |
| CN103320115B (en) | A kind of method preparing petroleum fracturing propping agent by aluminous fly-ash | |
| CN104910891A (en) | Low-density ceramic fracturing propping agent and preparation method thereof | |
| CN107056267A (en) | Fracturing propping agents and preparation method thereof | |
| CN107011887A (en) | Fracturing propping agents additive, fracturing propping agents and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 650031 No. 86 Yuantong North Road, Yunnan, Kunming Patentee after: Kunming Metallurgical Research Institute Co., Ltd Address before: 650031 No. 86 Yuantong North Road, Wuhua District, Yunnan, Kunming Patentee before: Kunming Metallurgical Research Institute |
|
| CP03 | Change of name, title or address |