WO2022099450A1 - Method for preparing coal bed fracturing propping agent - Google Patents

Method for preparing coal bed fracturing propping agent Download PDF

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WO2022099450A1
WO2022099450A1 PCT/CN2020/127776 CN2020127776W WO2022099450A1 WO 2022099450 A1 WO2022099450 A1 WO 2022099450A1 CN 2020127776 W CN2020127776 W CN 2020127776W WO 2022099450 A1 WO2022099450 A1 WO 2022099450A1
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parts
preparation
stirring
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PCT/CN2020/127776
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覃华贤
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南通市多乾新材料科技有限公司
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Publication of WO2022099450A1 publication Critical patent/WO2022099450A1/en

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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
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open

Definitions

  • the invention relates to a preparation method of a coal seam fracturing proppant.
  • Coalbed methane is an associated gas in the coal formation process. It exists in the coal seam in a free state and an adsorbed state. It is flammable, explosive and easy to burst. It is a major safety hazard in the coal mine production process. my country's coalbed methane resources are very rich, and because of its clean and efficient characteristics, it has attracted more and more attention from all over the world. The exploitation and utilization of coalbed methane has a profound impact on the prevention and control of gas accidents and the improvement of my country's energy structure. Gas extraction by fracturing the coal seam to increase the permeability of the coal seam is a research hotspot in the current coalbed methane development. The proppant is an indispensable filling medium for hydraulic fracturing.
  • Coal gangue and fly ash are solid wastes produced in the process of industrialization in my country.
  • the accumulation of these wastes not only occupies land resources, but also causes serious environmental pollution, and even causes serious harm to human body and organisms. Therefore, an attempt was made to only use bauxite such as secondary B and industrial waste fly ash and coal gangue as raw materials, without using manganese ore powder, feldspar and other mineralizing agents as fluxes to reduce heavy metal pollution, in order to prepare a low-density
  • the ceramsite proppant suitable for coal seam hydraulic fracturing mining And after the finished product is made, the coupling agent, phenolic resin and epoxy resin (2:1) are added, and the cured film-coated ceramsite is obtained by heating and stirring. The results show that the crushing rate of the proppant is greatly reduced, and the bulk density and apparent density somewhat reduced.
  • the use of industrial solid waste to prepare proppant can not only save bauxite resources, but also protect the environment and improve economic benefits by
  • the purpose of the present invention is to provide a preparation method of a coal seam fracturing proppant.
  • a preparation method of a proppant for coal seam fracturing comprising the steps of: loading 40-50 parts of bauxite, 20-30 parts of fly ash, and 45-55 parts of coal gangue into a planetary ball mill, and continuously ball-milling for 3-5 hours , and then dried in a drying oven at 50-60 °C to obtain the initial powder; pour the obtained powder into the sugar coating machine to roll granulation, spray water mist intermittently to form seeds, and then intermittently add materials and water mist to form raw pellets , and finally polished for 2.5-3.5h; the raw pellets were dried in a drying oven, then placed in a muffle furnace, sintered at 1310-1330°C for 3-4h, and cooled with the furnace to pass through a 20-40 mesh sieve, That is, the finished ceramsite proppant is obtained; 10-20 parts of ceramsite are washed with water and dried, heated to 320-340°C for 3-5min, then cooled to 180°C, and 20-30 parts of phenolic resin
  • continuous ball milling is performed for 4 hours.
  • drying is performed in a drying oven at 55°C.
  • polishing treatment is performed for 3 hours.
  • sintering is performed at 1320° C. for 3.5 hours.
  • stirring is performed for 20 min.
  • the method is simple, fast and easy to operate, and the prepared coal seam fracturing proppant has low density and crushing rate, high strength, has huge application prospect, and can be prepared on a large scale.
  • a preparation method of a proppant for coal seam fracturing comprising the following steps: loading 45 parts of bauxite, 25 parts of fly ash, and 50 parts of coal gangue into a planetary ball mill, continuously ball-milling for 4 hours, and then in a drying box for 55
  • the initial powder is obtained by drying at °C; the obtained powder is poured into the sugar coating machine for rolling granulation, sprayed with water mist intermittently to form seeds, then intermittently added with materials and water mist to form raw pellets, and finally polished for 3 hours;
  • the particles were dried in a drying oven, then placed in a muffle furnace, sintered at 1320 ° C for 3.5 hours, and cooled with the furnace to pass through a 20-40 mesh sieve to obtain the finished ceramsite proppant; 15 parts of ceramsite were washed with water and dried.
  • a preparation method of a proppant for coal seam fracturing comprising the following steps: loading 40 parts of bauxite, 20 parts of fly ash, and 45 parts of coal gangue into a planetary ball mill, continuously ball-milling for 3 hours, and then in a drying box for 50
  • the initial powder is obtained by drying at °C; the obtained powder is poured into the sugar coating machine for rolling granulation, sprayed with water mist intermittently to form seeds, then intermittently added with materials and water mist to form raw pellets, and finally polished for 2.5 hours;
  • the pellets were dried in a drying oven, then placed in a muffle furnace, sintered at 1310 °C for 3 hours, and cooled with the furnace to pass through a 20-40 mesh sieve to obtain the finished ceramsite proppant; 10 parts of ceramsite were washed with water and dried.
  • a method for preparing a proppant for coal seam fracturing comprising the steps of: loading 50 parts of bauxite, 30 parts of fly ash and 55 parts of coal gangue into a planetary ball mill, continuously ball-milling for 5 hours, and then placing them in a drying box for 60 hours.
  • the initial powder is obtained by drying at °C; the obtained powder is poured into a sugar coating machine for rolling granulation, sprayed with water mist intermittently to form seeds, then intermittently added with materials and water mist to form raw pellets, and finally polished for 3.5 hours; The pellets were dried in a drying oven, then placed in a muffle furnace, sintered at 1330 °C for 4 hours, and cooled with the furnace to pass through a 20-40 mesh sieve to obtain the finished ceramsite proppant; 20 parts of ceramsite were washed with water and dried.
  • the method is simple, fast and easy to operate, and the prepared coal seam fracturing proppant has low density and crushing rate, high strength, has huge application prospect, and can be prepared on a large scale.

Abstract

Disclosed is a method for preparing a coal bed fracturing propping agent. The preparation method comprises the following steps: charging a planetary ball mill with bauxite, coal ash, and coal gangue, carrying out ball milling for 3-5 h, and drying same to obtain an initial powder; pouring the obtained powder into a sugar-coating machine for rolling granulation, intermittently spraying same with a water mist to form seeds, then intermittently adding the material and water mist to form raw spherical particles, and finally, carrying out a polishing treatment for 2.5-3.5 h; putting the raw spherical particles into a drying oven for drying, then putting the dried spherical particles into a muffle furnace for sintering, and carrying out furnace cooling and sieving to obtain a finished ceramic particle propping agent; and washing the ceramic particles with water, heating same to 320-340ºC, maintaining the temperature for 3-5 min, then cooling same to 180ºC, adding a phenolic resin and a furan resin, stirring same, then adding a plasticizer and a coupling agent, rapidly stirring same, adding a curing agent while stirring, and then carrying out cooling and sieving to obtain the coal bed fracturing propping agent. The prepared coal bed fracturing propping agent is low in density and breakage rate and high in strength, and has huge application prospects.

Description

一种煤层压裂支撑剂的制备方法A kind of preparation method of coal seam fracturing proppant 技术领域technical field
本发明涉及一种煤层压裂支撑剂的制备方法。The invention relates to a preparation method of a coal seam fracturing proppant.
背景技术Background technique
煤层气是煤形成过程中伴生的气体，以游离态与吸附态赋存在煤层内部，具有易燃性、易爆性和易突性，是煤矿生产过程中的一大安全隐患。我国煤层气资源十分丰富，由于其清洁高效的特点，越来越受到世界各国的重视。煤层气的开采利用对于瓦斯事故防治和改善我国能源结构有深远影响。通过压裂煤层增加煤层透气性来抽采瓦斯是当前煤层气开发的研究热点。支撑剂是水力压裂不可缺少的填充介质，压裂过程中消耗量极大，占据了大部分的压裂成本，其性能的好坏直接影响压裂效果。我国目前广泛使用的是石油陶粒支撑剂，其密度大、成本高，容易在裂缝端口堆积，对携砂液的性能和泵送要求高，因此对适用于煤层压裂的低密度陶粒支撑剂的开发十分迫切。树脂覆膜支撑剂是将树脂包裹在石英砂或者陶粒的表面,再进行热处理进行固化而制成,具有密度小，强度高等特点，能有效预防支撑剂嵌入地层。Coalbed methane is an associated gas in the coal formation process. It exists in the coal seam in a free state and an adsorbed state. It is flammable, explosive and easy to burst. It is a major safety hazard in the coal mine production process. my country's coalbed methane resources are very rich, and because of its clean and efficient characteristics, it has attracted more and more attention from all over the world. The exploitation and utilization of coalbed methane has a profound impact on the prevention and control of gas accidents and the improvement of my country's energy structure. Gas extraction by fracturing the coal seam to increase the permeability of the coal seam is a research hotspot in the current coalbed methane development. The proppant is an indispensable filling medium for hydraulic fracturing. It consumes a lot during the fracturing process and occupies most of the fracturing cost. The quality of its performance directly affects the fracturing effect. At present, petroleum ceramsite proppant is widely used in my country, which has high density and high cost, and is easy to accumulate at the fracture port. It has high requirements on the performance and pumping of sand-carrying fluid. The development of the agent is very urgent. Resin-coated proppant is made by wrapping resin on the surface of quartz sand or ceramsite, and then heat treatment for curing. It has the characteristics of low density and high strength, which can effectively prevent the proppant from being embedded in the formation.
煤矸石和粉煤灰是我国工业化过程中产生的固体废弃物，这些废弃物堆积不仅占用国土资源而且造成严重环境污染，甚至还会对人体和生物造成严重危害。因此，尝试仅以二级乙等铝矾土和工业废料粉煤灰、煤矸石为原料，不使用锰矿粉、长石等矿化剂作助熔剂，减少重金属污染，以期望制备一种低密度的适用煤层水力压裂开采的陶粒支撑剂。并在制得成品后，加入偶联剂、酚醛树脂和环氧树脂(2:1)，通过加热、搅拌得到固化覆膜陶粒，结果表明支撑剂的破碎率大大下降，体积密度和视密度有所降低。利用工业固废物来制备支撑剂，既可以节约铝土矿资源，又能够废物利用保护环境、提高经济效益，是当前经济型陶粒研究的热点。Coal gangue and fly ash are solid wastes produced in the process of industrialization in my country. The accumulation of these wastes not only occupies land resources, but also causes serious environmental pollution, and even causes serious harm to human body and organisms. Therefore, an attempt was made to only use bauxite such as secondary B and industrial waste fly ash and coal gangue as raw materials, without using manganese ore powder, feldspar and other mineralizing agents as fluxes to reduce heavy metal pollution, in order to prepare a low-density The ceramsite proppant suitable for coal seam hydraulic fracturing mining. And after the finished product is made, the coupling agent, phenolic resin and epoxy resin (2:1) are added, and the cured film-coated ceramsite is obtained by heating and stirring. The results show that the crushing rate of the proppant is greatly reduced, and the bulk density and apparent density somewhat reduced. The use of industrial solid waste to prepare proppant can not only save bauxite resources, but also protect the environment and improve economic benefits by utilizing waste.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于提供一种煤层压裂支撑剂的制备方法。The purpose of the present invention is to provide a preparation method of a coal seam fracturing proppant.
本发明通过下面技术方案实现：The present invention is achieved through the following technical solutions:
一种煤层压裂支撑剂的制备方法，包括如下步骤：将40-50份铝矾土、20-30份粉煤灰、45-55份煤矸石装入行星式球磨机中，连续球磨3-5h，然后在干燥箱中于50-60℃烘干即得到初始粉料；将所得粉料倒入糖衣机内滚动造粒，间歇喷入水雾形成种子，然后间歇加入物料和水雾形成生球粒，最后进行2.5-3.5h抛光处理；将生球粒置于干燥箱中干燥，然后放置于马弗炉中，在1310-1330℃烧结保温3-4h，随炉冷却过20～40目筛，即得到成品陶粒支撑剂；将10-20份陶粒水洗并烘干，加热至320-340℃保持3-5min，再冷却至180℃，将20-30份酚 醛树脂和5-15份呋喃树脂加入进去，搅拌15-25min后，加入4-6份增塑剂和3-5份偶联剂，快速搅拌，边搅拌边加入7-9份固化剂固化增强树脂，随后冷却、筛分，即得；各原料均为重量份。A preparation method of a proppant for coal seam fracturing, comprising the steps of: loading 40-50 parts of bauxite, 20-30 parts of fly ash, and 45-55 parts of coal gangue into a planetary ball mill, and continuously ball-milling for 3-5 hours , and then dried in a drying oven at 50-60 ℃ to obtain the initial powder; pour the obtained powder into the sugar coating machine to roll granulation, spray water mist intermittently to form seeds, and then intermittently add materials and water mist to form raw pellets , and finally polished for 2.5-3.5h; the raw pellets were dried in a drying oven, then placed in a muffle furnace, sintered at 1310-1330°C for 3-4h, and cooled with the furnace to pass through a 20-40 mesh sieve, That is, the finished ceramsite proppant is obtained; 10-20 parts of ceramsite are washed with water and dried, heated to 320-340°C for 3-5min, then cooled to 180°C, and 20-30 parts of phenolic resin and 5-15 parts of furan are mixed. Add resin into it, after stirring for 15-25min, add 4-6 parts of plasticizer and 3-5 parts of coupling agent, stir rapidly, add 7-9 parts of curing agent while stirring to solidify the reinforced resin, then cool, sieve, That is, each raw material is in parts by weight.
优选地，所述的制备方法中，连续球磨4h。Preferably, in the preparation method, continuous ball milling is performed for 4 hours.
优选地，所述的制备方法中，在干燥箱中于55℃烘干。Preferably, in the preparation method, drying is performed in a drying oven at 55°C.
优选地，所述的制备方法中，进行3h抛光处理。Preferably, in the preparation method, polishing treatment is performed for 3 hours.
优选地，所述的制备方法中，在1320℃烧结保温3.5h。Preferably, in the preparation method, sintering is performed at 1320° C. for 3.5 hours.
优选地，所述的制备方法中，加热至330℃保持4min。Preferably, in the preparation method, heating to 330° C. for 4 min.
优选地，所述的制备方法中，搅拌20min。Preferably, in the preparation method, stirring is performed for 20 min.
本发明技术效果：Technical effect of the present invention:
该方法简便、快捷、易操作，制备的煤层压裂支撑剂密度和破碎率低，强度大，具有巨大的应用前景，可大规模制备。The method is simple, fast and easy to operate, and the prepared coal seam fracturing proppant has low density and crushing rate, high strength, has huge application prospect, and can be prepared on a large scale.
具体实施方式Detailed ways
下面结合实施例具体介绍本发明的实质性内容。The substantive content of the present invention will be specifically described below with reference to the embodiments.
实施例1Example 1
一种煤层压裂支撑剂的制备方法，包括如下步骤：将45份铝矾土、25份粉煤灰、50份煤矸石装入行星式球磨机中，连续球磨4h，然后在干燥箱中于55℃烘干即得到初始粉料；将所得粉料倒入糖衣机内滚动造粒，间歇喷入水雾形成种子，然后间歇加入物料和水雾形成生球粒，最后进行3h抛光处理；将生球粒置于干燥箱中干燥，然后放置于马弗炉中，在1320℃烧结保温3.5h，随炉冷却过20～40目筛，即得到成品陶粒支撑剂；将15份陶粒水洗并烘干，加热至330℃保持4min，再冷却至180℃，将25份酚醛树脂和10份呋喃树脂加入进去，搅拌20min后，加入5份增塑剂和4份偶联剂，快速搅拌，边搅拌边加入8份固化剂固化增强树脂，随后冷却、筛分，即得；各原料均为重量份。A preparation method of a proppant for coal seam fracturing, comprising the following steps: loading 45 parts of bauxite, 25 parts of fly ash, and 50 parts of coal gangue into a planetary ball mill, continuously ball-milling for 4 hours, and then in a drying box for 55 The initial powder is obtained by drying at ℃; the obtained powder is poured into the sugar coating machine for rolling granulation, sprayed with water mist intermittently to form seeds, then intermittently added with materials and water mist to form raw pellets, and finally polished for 3 hours; The particles were dried in a drying oven, then placed in a muffle furnace, sintered at 1320 ° C for 3.5 hours, and cooled with the furnace to pass through a 20-40 mesh sieve to obtain the finished ceramsite proppant; 15 parts of ceramsite were washed with water and dried. Dry, heat to 330°C for 4min, then cool to 180°C, add 25 parts of phenolic resin and 10 parts of furan resin, stir for 20min, add 5 parts of plasticizer and 4 parts of coupling agent, stir quickly, while stirring Add 8 parts of curing agent to solidify the reinforced resin, then cool and sieve to obtain; each raw material is in parts by weight.
实施例2Example 2
一种煤层压裂支撑剂的制备方法，包括如下步骤：将40份铝矾土、20份粉煤灰、45份煤矸石装入行星式球磨机中，连续球磨3h，然后在干燥箱中于50℃烘干即得到初始粉料；将所得粉料倒入糖衣机内滚动造粒，间歇喷入水雾形成种子，然后间歇加入物料和水雾形成生球粒，最后进行2.5h抛光处理；将生球粒置于干燥箱中干燥，然后放置于马弗炉中，在1310℃烧结保温3h，随炉冷却过20～40目筛，即得到成品陶粒支撑剂；将10份陶粒水洗并烘干，加热至320℃保持3min，再冷却至180℃，将20份酚醛树脂和5份呋喃树脂加入进去，搅拌15min后，加入4份增塑剂和3份偶联剂，快速搅拌，边搅拌边加入7份固化剂固化增强树 脂，随后冷却、筛分，即得；各原料均为重量份。A preparation method of a proppant for coal seam fracturing, comprising the following steps: loading 40 parts of bauxite, 20 parts of fly ash, and 45 parts of coal gangue into a planetary ball mill, continuously ball-milling for 3 hours, and then in a drying box for 50 The initial powder is obtained by drying at ℃; the obtained powder is poured into the sugar coating machine for rolling granulation, sprayed with water mist intermittently to form seeds, then intermittently added with materials and water mist to form raw pellets, and finally polished for 2.5 hours; The pellets were dried in a drying oven, then placed in a muffle furnace, sintered at 1310 °C for 3 hours, and cooled with the furnace to pass through a 20-40 mesh sieve to obtain the finished ceramsite proppant; 10 parts of ceramsite were washed with water and dried. Dry, heat to 320°C for 3min, then cool to 180°C, add 20 parts of phenolic resin and 5 parts of furan resin, after stirring for 15min, add 4 parts of plasticizer and 3 parts of coupling agent, stir rapidly, while stirring Add 7 parts of curing agent to solidify the reinforced resin, then cool and sieve to obtain; each raw material is in parts by weight.
实施例3Example 3
一种煤层压裂支撑剂的制备方法，包括如下步骤：将50份铝矾土、30份粉煤灰、55份煤矸石装入行星式球磨机中，连续球磨5h，然后在干燥箱中于60℃烘干即得到初始粉料；将所得粉料倒入糖衣机内滚动造粒，间歇喷入水雾形成种子，然后间歇加入物料和水雾形成生球粒，最后进行3.5h抛光处理；将生球粒置于干燥箱中干燥，然后放置于马弗炉中，在1330℃烧结保温4h，随炉冷却过20～40目筛，即得到成品陶粒支撑剂；将20份陶粒水洗并烘干，加热至340℃保持5min，再冷却至180℃，将30份酚醛树脂和15份呋喃树脂加入进去，搅拌25min后，加入6份增塑剂和5份偶联剂，快速搅拌，边搅拌边加入9份固化剂固化增强树脂，随后冷却、筛分，即得；各原料均为重量份。A method for preparing a proppant for coal seam fracturing, comprising the steps of: loading 50 parts of bauxite, 30 parts of fly ash and 55 parts of coal gangue into a planetary ball mill, continuously ball-milling for 5 hours, and then placing them in a drying box for 60 hours. The initial powder is obtained by drying at ℃; the obtained powder is poured into a sugar coating machine for rolling granulation, sprayed with water mist intermittently to form seeds, then intermittently added with materials and water mist to form raw pellets, and finally polished for 3.5 hours; The pellets were dried in a drying oven, then placed in a muffle furnace, sintered at 1330 °C for 4 hours, and cooled with the furnace to pass through a 20-40 mesh sieve to obtain the finished ceramsite proppant; 20 parts of ceramsite were washed with water and dried. Dry, heat to 340°C for 5min, then cool to 180°C, add 30 parts of phenolic resin and 15 parts of furan resin, stir for 25min, add 6 parts of plasticizer and 5 parts of coupling agent, stir quickly, while stirring Add 9 parts of curing agent to solidify the reinforced resin, then cool and sieve to obtain; each raw material is in parts by weight.
该方法简便、快捷、易操作，制备的煤层压裂支撑剂密度和破碎率低，强度大，具有巨大的应用前景，可大规模制备。The method is simple, fast and easy to operate, and the prepared coal seam fracturing proppant has low density and crushing rate, high strength, has huge application prospect, and can be prepared on a large scale.

Claims (7)

  1. 一种煤层压裂支撑剂的制备方法，其特征在于包括如下步骤：将40-50份铝矾土、20-30份粉煤灰、45-55份煤矸石装入行星式球磨机中，连续球磨3-5h，然后在干燥箱中于50-60℃烘干即得到初始粉料；将所得粉料倒入糖衣机内滚动造粒，间歇喷入水雾形成种子，然后间歇加入物料和水雾形成生球粒，最后进行2.5-3.5h抛光处理；将生球粒置于干燥箱中干燥，然后放置于马弗炉中，在1310-1330℃烧结保温3-4h，随炉冷却过20～40目筛，即得到成品陶粒支撑剂；将10-20份陶粒水洗并烘干，加热至320-340℃保持3-5min，再冷却至180℃，将20-30份酚醛树脂和5-15份呋喃树脂加入进去，搅拌15-25min后，加入4-6份增塑剂和3-5份偶联剂，快速搅拌，边搅拌边加入7-9份固化剂固化增强树脂，随后冷却、筛分，即得；各原料均为重量份。A preparation method of coal seam fracturing proppant is characterized by comprising the following steps: loading 40-50 parts of bauxite, 20-30 parts of fly ash, and 45-55 parts of coal gangue into a planetary ball mill, and continuously ball-milling 3-5h, and then dried in a drying oven at 50-60°C to obtain the initial powder; pour the obtained powder into the sugar coating machine to roll granulation, spray water mist intermittently to form seeds, and then intermittently add materials and water mist to form The raw pellets are finally polished for 2.5-3.5h; the raw pellets are dried in a drying oven, then placed in a muffle furnace, sintered at 1310-1330 ° C for 3-4 hours, and cooled with the furnace for 20-40 hours. Mesh sieve to get the finished ceramsite proppant; 10-20 parts of ceramsite are washed with water and dried, heated to 320-340 ℃ for 3-5min, then cooled to 180 ℃, and 20-30 parts of phenolic resin and 5- Add 15 parts of furan resin, after stirring for 15-25min, add 4-6 parts of plasticizer and 3-5 parts of coupling agent, stir quickly, add 7-9 parts of curing agent to solidify the reinforcing resin while stirring, then cool, Sieve and get it; all raw materials are in parts by weight.
  2. 根据权利要求1所述的制备方法，其特征在于：连续球磨4h。The preparation method according to claim 1, characterized in that: continuous ball milling for 4h.
  3. 根据权利要求1所述的制备方法，其特征在于：在干燥箱中于55℃烘干。The preparation method according to claim 1, characterized in that: drying in a drying oven at 55°C.
  4. 根据权利要求1所述的制备方法，其特征在于：进行3h抛光处理。The preparation method according to claim 1, characterized in that: 3h polishing treatment is performed.
  5. 根据权利要求1所述的制备方法，其特征在于：在1320℃烧结保温3.5h。The preparation method according to claim 1, characterized in that: sintering at 1320° C. for 3.5 hours.
  6. 根据权利要求1所述的制备方法，其特征在于：加热至330℃保持4min。The preparation method according to claim 1, characterized in that: heating to 330° C. for 4 min.
  7. 根据权利要求1所述的制备方法，其特征在于：搅拌20min。The preparation method according to claim 1, characterized in that: stirring for 20min.
PCT/CN2020/127776 2020-11-10 2020-11-10 Method for preparing coal bed fracturing propping agent WO2022099450A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050267001A1 (en) * 2004-05-26 2005-12-01 Weaver Jimmie D On-the-fly preparation of proppant and its use in subterranean operations
CN102127418A (en) * 2010-12-29 2011-07-20 北京奇想达科技有限公司 Ultralight-weight proppant and preparation method thereof
CN105176512A (en) * 2015-09-09 2015-12-23 北京昆仑隆源石油开采技术有限公司 Novel ultralow-density compound propping agent and preparation method thereof
CN105176513A (en) * 2015-09-09 2015-12-23 北京昆仑隆源石油开采技术有限公司 Novel ultralow-density propping agent and preparation method thereof
CN107267134A (en) * 2017-06-12 2017-10-20 太原理工大学 It is a kind of for low-density fracturing propping agents of coal-bed gas exploitation and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050267001A1 (en) * 2004-05-26 2005-12-01 Weaver Jimmie D On-the-fly preparation of proppant and its use in subterranean operations
CN102127418A (en) * 2010-12-29 2011-07-20 北京奇想达科技有限公司 Ultralight-weight proppant and preparation method thereof
CN105176512A (en) * 2015-09-09 2015-12-23 北京昆仑隆源石油开采技术有限公司 Novel ultralow-density compound propping agent and preparation method thereof
CN105176513A (en) * 2015-09-09 2015-12-23 北京昆仑隆源石油开采技术有限公司 Novel ultralow-density propping agent and preparation method thereof
CN107267134A (en) * 2017-06-12 2017-10-20 太原理工大学 It is a kind of for low-density fracturing propping agents of coal-bed gas exploitation and preparation method thereof

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