CN102899016B - High strength ceramsite proppant prepared from novel fluxing agent and preparation method thereof - Google Patents
High strength ceramsite proppant prepared from novel fluxing agent and preparation method thereof Download PDFInfo
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- CN102899016B CN102899016B CN201210356672.7A CN201210356672A CN102899016B CN 102899016 B CN102899016 B CN 102899016B CN 201210356672 A CN201210356672 A CN 201210356672A CN 102899016 B CN102899016 B CN 102899016B
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Abstract
The invention discloses a high-strength medium-density ceramsite proppant and a preparation method thereof. The proppant comprises the following raw materials by weight: 90%-97% of bauxite and 3%-10% of a lithium compound. In the invention, the lithium compound is adopted for production of grey ceramsites so as to solve ceramsite quality fluctuation caused by fluxing agent instability, thus having a great promoting effect on ceramsite quality enhancement. And the produced product is completely in line with the national and international standards. Besides, the ceramsite proppant prepared from the fluxing agent has substantially improved ceramsite strength than that prepared from manganese powder as the fluxing agent, and has a lower breakage rate.
Description
Technical field
The invention belongs to inorganic non-metallic ceramics Material Field, be specifically related to a kind of high-strength ceramic proppant adopting new flux to prepare and preparation method thereof.
Background technology
Petroleum fracturing propping agent (ceramsite sand) is a kind of ceramic particle product, has very high fracturing strengh, is mainly used in petroleum-gas fiedl down-hole and supports, and to increase the output of oil and gas, belongs to environmentfriendly products.This product is the substitute of the Medium and low intensity propping agents such as natural siliceous sand, glass sphere, Metal Ball, has good result to stimulating oil Sweet natural gas.
During oil and gas deep mining, high locking pressure deposits of low permeability, after fracture treatment, makes Oil gas-containing rock layer split, and oil gas collects from the passage of cracking initiation.Enter Filling with petroleum fracturing propping agent in rock crack in company with high-pressure solution, play and support crack not stress release and closed effect, thus keep high flow conductivity, make oil gas unimpeded, increase yield.Facts have proved, use the oil well of petroleum fracturing propping agent pressure break to improve output 30-50%, can also extend the Oil/gas Well length of service, is the critical material of oil, the exploitation of Sweet natural gas low-permeability oil gas well, construction.Product application is when deep well fracturing is constructed, fill it in the rock crack in hyposmosis mineral deposit, carry out the closed fracture treatment of height, Oil gas-containing rock layer is split, play support crack not stress release and close, thus keep the high flow conductivity of oil gas, not only can increase oil and gas production, and more can extend the Oil/gas Well length of service.
Propping agent density is divided into three kinds by usual people custom: low density, Midst density and high-density, is generally 1.65g/cm respectively with volume density and volume density
3below and 3.0g/cm
3hereinafter referred to as low-density propping agent; 1.65g/cm
3~ 1.80g/cm
3and 3.00g/cm
3~ 3.35g/cm
3for Midst density propping agent; 1.80g/cm
3above and 3.35g/cm
3it is more than high density proppants.
In existing haydite production process, the selection overwhelming majority of fusing assistant adopts manganese powder to produce, and is commonly called as black haydite.The base material selected owing to producing manganese powder is manganese ore, and containing manganese general 60%, all the other are that haydite objectionable constituent produced by silicon, iron etc., and its chemical composition is unstable, thus cause the quality of produced haydite to produce fluctuation.Therefore the stay-in-grade fusing assistant adopting other is needed to replace manganese powder for the production of haydite, to stop the unstable of the haydite quality that different batches is produced.
Summary of the invention
The object of the present invention is to provide a kind of high strength Medium-density ceramsite proppant, in this ceramsite propping agent, adopt lithium compound to replace manganese powder as fusing assistant.The composition of lithium compound is single, and ionic radius is little, and at high temperature with solid-state nonmetal oxide kickback, this is auxiliary agent basis.Prepared ceramsite propping agent steady quality, intensity is high, and percentage of damage is lower.Temperature of reaction is lower, and compactness is high.
Another object of the present invention is to the preparation method that a kind of high strength Medium-density ceramsite proppant is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of high strength Medium-density ceramsite proppant, weight percentage, this propping agent comprises following raw material: bauxitic clay 90% ~ 97% and lithium compound 3% ~ 10%.
Described lithium compound is preferably lithium hydroxide.
In described bauxitic clay, the weight percentage of main chemical compositions is: Al
2content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%.
Particle diameter≤300 order of described bauxitic clay, is preferably 300 ~ 600 orders; Particle diameter≤300 order of described lithium hydroxide, is preferably 300 ~ 1000 orders.
Above-mentioned high strength Medium-density ceramsite proppant, it is to adopt following steps preparation:
(1) bauxitic clay and lithium compound are mixed obtain mixture in proportion;
(2) mixture is put in tablets press granulate, obtain haydite base substrate; Use spray method adds water, and amount of water is 10% ~ 20% of mixture weight;
(3) by haydite base substrate screening post-drying, then sintering soak 2 ~ 4 hours at 1280 ~ 1360 DEG C, obtains high strength Medium-density ceramsite proppant.
The preparation method of above-mentioned high strength Medium-density ceramsite proppant, it is to comprise following steps:
(1) bauxitic clay and lithium compound are mixed obtain mixture in proportion;
(2) mixture is put in tablets press granulate, obtain haydite base substrate; Use spray method adds water, and amount of water is 10% ~ 20% of mixture weight;
(3) by haydite base substrate screening post-drying, then sintering soak 2 ~ 4 hours at 1280 ~ 1360 DEG C, obtains high strength Medium-density ceramsite proppant.
Beneficial effect of the present invention:
The present invention adopts lithium compound production grey haydite, solves the fluctuation of the haydite quality that fusing assistant instability is brought, and have great promoter action to lifting haydite quality, the product of production meets country and international standard completely.And adopting the lithium compound ceramsite propping agent that especially lithium hydroxide is prepared as fusing assistant to be significantly increased with the haydite intensity adopting manganese powder to prepare as fusing assistant, percentage of damage is lower.
Embodiment
Embodiment 1
Propping agent comprises following feed composition: bauxitic clay 95% and lithium hydroxide 5%.
In described bauxitic clay, the weight percentage of main chemical compositions is: Al
2content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The particle diameter of described bauxitic clay is 320 orders; The particle diameter of described lithium hydroxide is 320 orders.
Preparation process:
(1) bauxitic clay and lithium hydroxide are mixed obtain mixture in proportion;
(2) mixture is put in tablets press granulate, obtain haydite base substrate (shaping particle diameter is 0.5-1.0mm); Use spray method adds water, and amount of water is 15% of mixture weight;
(3) by haydite base substrate screening post-drying, then sintering soak 3 hours at 1300 DEG C, obtains high strength Medium-density ceramsite proppant.
Embodiment 2
Propping agent comprises following feed composition: bauxitic clay 93% and lithium hydroxide 7%.
In described bauxitic clay, the weight percentage of main chemical compositions is: Al
2content 70% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The particle diameter of described bauxitic clay is 320 orders; The particle diameter of described lithium hydroxide is 320 orders.
Preparation process:
(1) bauxitic clay and lithium hydroxide are mixed obtain mixture in proportion;
(2) mixture is put in tablets press granulate, obtain haydite base substrate (shaping particle diameter is 0.5-1.0mm); Use spray method adds water, and amount of water is 15% of mixture weight;
(3) by haydite base substrate screening post-drying, then sintering soak 3 hours at 1300 DEG C, obtains high strength Medium-density ceramsite proppant.
Embodiment 3
Propping agent comprises following feed composition: bauxitic clay 96% and lithium hydroxide 4%.
In described bauxitic clay, the weight percentage of main chemical compositions is: Al
2content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The particle diameter of described bauxitic clay is 320 orders; The particle diameter of described lithium hydroxide is 320 orders.
Preparation process:
(1) bauxitic clay and lithium hydroxide are mixed obtain mixture in proportion;
(2) mixture is put in tablets press granulate, obtain haydite base substrate (shaping particle diameter is 0.5-1.0mm); Use spray method adds water, and amount of water is 15% of mixture weight;
(3) by haydite base substrate screening post-drying, then sintering soak 3 hours at 1300 DEG C, obtains high strength Medium-density ceramsite proppant.
Comparative example 1
Propping agent comprises following feed composition: bauxitic clay 94% and manganese powder 6%.
In described bauxitic clay, the weight percentage of main chemical compositions is: Al
2content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The particle diameter of described bauxitic clay is 320 orders.In described manganese powder, the weight percentage of main chemical compositions is: Fe content 55% ~ 65%, Si content 25% ~ 35%; The particle diameter of described manganese powder is 320 orders.
Preparation process:
(1) bauxitic clay and manganese powder are mixed obtain mixture in proportion;
(2) mixture is put in tablets press granulate, obtain haydite base substrate (shaping particle diameter is 0.5-1.0mm); Use spray method adds water, and amount of water is 15% of mixture weight;
(3) by haydite base substrate screening post-drying, then sintering soak 3 hours at 1340 DEG C, obtains ceramsite propping agent.
Comparative example 2
Propping agent comprises following feed composition: bauxitic clay 90% and manganese powder 10%.
In described bauxitic clay, the weight percentage of main chemical compositions is: Al
2content 70% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The particle diameter of described bauxitic clay is 320 orders.In described manganese powder, the weight percentage of main chemical compositions is: Fe content 55% ~ 65%, Si content 25% ~ 35%; The particle diameter of described manganese powder is 320 orders.
Preparation process:
(1) bauxitic clay and manganese powder are mixed obtain mixture in proportion;
(2) mixture is put in tablets press granulate, obtain haydite base substrate (shaping particle diameter is 0.5-1.0mm); Use spray method adds water, and amount of water is 15% of mixture weight;
(3) by haydite base substrate screening post-drying, then sintering soak 3 hours at 1320 DEG C, obtains ceramsite propping agent.
Comparative example 3
Propping agent comprises following feed composition: bauxitic clay 95% and manganese powder 5%.
In described bauxitic clay, the weight percentage of main chemical compositions is: Al
2content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%; The particle diameter of described bauxitic clay is 320 orders.In described manganese powder, the weight percentage of main chemical compositions is: Fe content 55% ~ 65%, Si content 25% ~ 35%; The particle diameter of described manganese powder is 320 orders.
Preparation process:
(1) bauxitic clay and manganese powder are mixed obtain mixture in proportion;
(2) mixture is put in tablets press granulate, obtain haydite base substrate (shaping particle diameter is 0.5-1.0mm); Use spray method adds water, and amount of water is 15% of mixture weight;
(3) by haydite base substrate screening post-drying, then sintering soak 3 hours at 1360 DEG C, obtains ceramsite propping agent.
The Medium-density ceramsite proppant quality product detected result of table 1 embodiment 1-5 and comparative example 1
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Volume density g/cm 3 | 1.77 | 1.75 | 1.78 | 1.72 | 1.71 | 1.72 |
| 69MPa percentage of damage | 4.62 | 4.60 | 4.70 | 6.74 | 6.85 | 6.80 |
| Circularity | >0.9 | >0.9 | >0.9 | >0.9 | >0.9 | >0.9 |
| Sphericity | >0.9 | >0.9 | >0.9 | >0.9 | >0.9 | >0.9 |
| Turbidity NTV | 48.1 | 48.3 | 48.0 | 60.1 | 61.3 | 60.7 |
| Acid-soluble degree % | 6.50 | 6.50 | 6.39 | 6.47 | 6.40 | 6.42 |
| Volume density g/cm 3 | 3.19 | 3.17 | 3.20 | 3.08 | 3.07 | 3.08 |
Result shows, and compared with ceramsite propping agent prepared by ceramsite propping agent prepared by embodiment 1-3 and comparative example 1-3, percentage of damage is by significantly reducing.And due to lithium hydroxide chemical composition single, the fluctuation of ceramsite propping agent quality can not be caused due to the instability of fusing assistant chemical composition.
Claims (3)
1. a high strength Medium-density ceramsite proppant, is characterized in that weight percentage, and this propping agent comprises following raw material: bauxitic clay 90% ~ 97% and lithium compound 3% ~ 10%; Described lithium compound is lithium hydroxide;
In described bauxitic clay, the weight percentage of main chemical compositions is: Al
2content 65% ~ 78%, Si content 4%-12%, Fe content 1% ~ 7%, Ti content 2% ~ 4%;
Particle diameter≤300 order of described bauxitic clay; Particle diameter≤300 order of described lithium hydroxide;
Prepared by employing following steps:
(1) bauxitic clay and lithium compound are mixed obtain mixture in proportion;
(2) mixture is put in tablets press granulate, obtain haydite base substrate; Use spray method adds water, and amount of water is 10% ~ 20% of mixture weight;
(3) by haydite base substrate screening post-drying, then sintering soak 2 ~ 4 hours at 1280 ~ 1360 DEG C, obtains high strength Medium-density ceramsite proppant.
2. high strength Medium-density ceramsite proppant according to claim 1, is characterized in that the particle diameter of described bauxitic clay is 300 ~ 600 orders; Particle diameter 300 ~ 1000 order of described lithium hydroxide.
3. the preparation method of high strength Medium-density ceramsite proppant according to claim 1, is characterized in that comprising following steps:
(1) bauxitic clay and lithium compound are mixed obtain mixture in proportion;
(2) mixture is put in tablets press granulate, obtain haydite base substrate; Use spray method adds water, and amount of water is 10% ~ 20% of mixture weight;
(3) by haydite base substrate screening post-drying, then sintering soak 2 ~ 4 hours at 1280 ~ 1360 DEG C, obtains high strength Medium-density ceramsite proppant.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210356672.7A CN102899016B (en) | 2012-09-24 | 2012-09-24 | High strength ceramsite proppant prepared from novel fluxing agent and preparation method thereof |
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|---|---|---|---|
| CN201210356672.7A CN102899016B (en) | 2012-09-24 | 2012-09-24 | High strength ceramsite proppant prepared from novel fluxing agent and preparation method thereof |
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| CN102899016A CN102899016A (en) | 2013-01-30 |
| CN102899016B true CN102899016B (en) | 2015-04-01 |
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| CN110289704B (en) * | 2019-07-10 | 2020-11-06 | 包头金山磁材有限公司 | Permanent magnet motor magnet and preparation method thereof |
Citations (5)
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|---|---|---|---|---|
| CN101023243A (en) * | 2004-09-14 | 2007-08-22 | 卡博陶粒有限公司 | Sintered spherical pellets |
| WO2009012455A1 (en) * | 2007-07-18 | 2009-01-22 | Oxane Materials, Inc. | Proppants with carbide and/or nitride phases |
| WO2009134159A1 (en) * | 2008-04-28 | 2009-11-05 | Schlumberger Canada Limited | Strong low density ceramics |
| CN101838530A (en) * | 2010-04-30 | 2010-09-22 | 郑州德赛尔陶粒有限公司 | Low-density high-strength ceramic granule propping agent and preparation method thereof |
| CN101880524A (en) * | 2010-04-27 | 2010-11-10 | 福建省宁德市俊杰瓷业有限公司 | Ultra-low-density ceramic proppant and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7867613B2 (en) * | 2005-02-04 | 2011-01-11 | Oxane Materials, Inc. | Composition and method for making a proppant |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101023243A (en) * | 2004-09-14 | 2007-08-22 | 卡博陶粒有限公司 | Sintered spherical pellets |
| WO2009012455A1 (en) * | 2007-07-18 | 2009-01-22 | Oxane Materials, Inc. | Proppants with carbide and/or nitride phases |
| WO2009134159A1 (en) * | 2008-04-28 | 2009-11-05 | Schlumberger Canada Limited | Strong low density ceramics |
| CN101880524A (en) * | 2010-04-27 | 2010-11-10 | 福建省宁德市俊杰瓷业有限公司 | Ultra-low-density ceramic proppant and preparation method thereof |
| CN101838530A (en) * | 2010-04-30 | 2010-09-22 | 郑州德赛尔陶粒有限公司 | Low-density high-strength ceramic granule propping agent and preparation method thereof |
Non-Patent Citations (2)
| Title |
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| 添加锰矿低密度高强度陶粒支撑剂的制备及作用机制研究;马雪等;《中国陶瓷工业》;20080215;第15卷(第01期);1-5 * |
| 高强度中密度压裂裂缝支撑剂;接金利等;《石油钻采工艺》;19910820;第15卷(第04期);85-90 * |
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