CN102676151B - Ultra-low-density ceramic proppant taking pebbles as main additive and preparation method thereof - Google Patents
Ultra-low-density ceramic proppant taking pebbles as main additive and preparation method thereof Download PDFInfo
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- CN102676151B CN102676151B CN201210143576.4A CN201210143576A CN102676151B CN 102676151 B CN102676151 B CN 102676151B CN 201210143576 A CN201210143576 A CN 201210143576A CN 102676151 B CN102676151 B CN 102676151B
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- pebbles
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Abstract
The invention belongs to the technical field of solid proppants for oil and gas well fracturing technologies and discloses an ultra-low-density ceramic proppant taking pebbles as a main additive and a preparation method thereof. The ultra-low-density ceramic proppant is prepared from the following raw materials in percentage by weight: 75-85% of alumyte, 5-20% of pebbles, 1-5% of potassium feldspar, 1-4% of calcite and 1-3% of magnesite. The preparation method comprises the following steps of: respectively crushing all the raw materials, then mixing according to the mixture ratio, performing spray granulation, and finally sintering for 0.5-2 hours at the temperature of 1300-1350 DEG C. According to the preparation method disclosed by the invention, the pebbles with extensive sources are selected as the main additive, so that the problem that the ultra-low-density ceramic proppants developed by most of manufacturers at present are too high in apparent density; and simultaneously, the potassium feldspar, the calcite and the magnesite are taken as sintering aids, the cost is lower than manganese mineral powder which is commonly used at present. More importantly, the ultra-low-density ceramic proppant produced by the preparation method disclosed by the invention can be conveniently constructed in an oil fracturing process, even realize clear water fracturing and greatly reduce oil production cost.
Description
Technical field
The invention belongs to oil, gas well fracturing technique Selid propping agent technical field, particularly a kind of extremely-low density ceramsite propping agent that pebbles is main additive and preparation method thereof that utilizes.
Background technology
In the fracturing technology of oil, Sweet natural gas deep mining, all can use fracturing propping agents, for the circulation of hydrocarbon flow provides the passage of hypertonicity, keep high flow conductivity, to improve the output of oil, gas.The China's oil industry generally is not more than 1.40g/cm to volume density at present
3, volume density is not more than 2.60g/cm
3, under locking pressure 40Mpa, percentage of damage is not more than 10% ceramsite propping agent and is called the extremely-low density ceramsite propping agent.While with the extremely-low density ceramsite propping agent, doing the Support Grains for Oil Well crude oil extraction, the propping agent consumption reduces, and easy construction even can realize riverfrac treatment, and cost for oil production had reduced many more originally.At present, China's extremely-low density ceramsite propping agent is all at the experimental stage, mainly with bauxite, be main raw material greatly, add a small amount of mineralizer such as potassium felspar sand, rhombspar, manganese powder, by the rotary kiln high-temperature firing, form, but its volume density index of ceramsite propping agent of preparation is higher, is difficult to be less than 2.60g/cm
3requirement, and select the manganese ore powder, its raw material anxiety, cost is also very high.
Summary of the invention
For overcoming the defect that the raw material that exists in prior art is nervous, production cost is high, volume density is too high, the object of the present invention is to provide a kind of extremely-low density ceramsite propping agent that pebbles is main additive and preparation method thereof that utilizes.
For achieving the above object, the technical scheme that the present invention takes is as follows:
A kind ofly utilize the extremely-low density ceramsite propping agent that pebbles is main additive, made by each raw material of following quality percentage composition: bauxite 75 ~ 85%, pebbles 5 ~ 20%, potassium felspar sand 1 ~ 5%, calcite 1 ~ 4%, magnesia 1 ~ 3%.
Preferably, in the quality percentage composition, Al in described bauxite
2o
3be 60 ~ 68%, Fe
2o
3<2%; SiO in described pebbles
2>90%, Fe
2o
3<2.5%; K in described potassium felspar sand
2o+Na
2o>13%; CaCO in described calcite
3>=95%; MgO in described magnesia>85%.
Preparation method: by proportioning mixing, mist projection granulating, finally form at 1300 ~ 1350 ℃ of sintering 0.5 ~ 2h after each raw material is pulverized respectively.
Preferably, each raw material is broken into respectively to the particle that is less than 10mm, the powder mix that then by proportioning mixed grinding to 325 mesh sieve percent of pass, is greater than 98%.
Preferably, after granulation, through screening, by the particle drying that obtains to biodiversity content not higher than 5%.
After testing, the volume density of extremely-low density ceramsite propping agent finished product of the present invention is 1.35 ~ 1.39g/cm
3, volume density is 2.55 ~ 2.60g/cm
3, when locking pressure is 40MPa, percentage of damage is 6.50 ~ 8.52%, other index also all meets the industry standard of national oil and gas SY/T 5108-2006.
The present invention, with respect to prior art, has following advantage:
1, the present invention is main additive by the pebbles of selecting wide material sources, has solved the too high problem of extremely-low density ceramsite propping agent volume density that most producer develops; Simultaneously, selecting potassium felspar sand, calcite and magnesia is sintering agent, lower than the cost of manganese ore powder at present commonly used.The more important thing is that extremely-low density ceramsite propping agent easy construction in oil fracturing technique that the present invention produces even can realize riverfrac treatment, greatly reduces cost for oil production.
2, the raw materials used source of the present invention wide, be convenient to buying, price is low; Production technique is simple and convenient; Reduced on the whole the cost of product.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is done into a ground and introduced in detail, but protection scope of the present invention is not limited to this:
Each raw material of the present invention all can obtain by commercial according to following technical indicator: in the quality percentage composition, and Al in bauxite
2o
3be 60 ~ 68%, Fe
2o
3<2%; SiO in pebbles
2>90%, Fe
2o
3<2.5%; K in potassium felspar sand
2o+Na
2o>13%; CaCO in calcite
3>=95%; MgO in magnesia>85%.
Embodiment 1
At first bauxite, pebbles, potassium felspar sand, calcite, each raw material of magnesia are broken into respectively to the particle that is less than 10mm, then prepare burden by mass percentage: bauxite 85%, pebbles 5%, potassium felspar sand 5%, calcite 4%, magnesia 1%.The powder mix that adds together (continous batching adds continuously) ball mill grinding to become the logical sieve rate of 325 orders to be greater than 98% after batching, put into again the pot of granulating, spraying (water smoke, lower same) granulation, after particle is screened according to Production requirement, be dried to biodiversity content not higher than 5%, then enter in rotary kiln, under 1300 ℃, through 2h, fire as finished product.After testing, the volume density of finished product is 1.39g/cm
3, volume density is 2.60g/cm
3, when locking pressure is 40MPa, percentage of damage is 6.50%.Other index also all meets the industry standard of national oil and gas SY/T 5108-2006.
Embodiment 2
At first bauxite, pebbles, potassium felspar sand, calcite, each raw material of magnesia are broken into respectively to the particle that is less than 10mm, then prepare burden by mass percentage: bauxite 85%, pebbles 10%, potassium felspar sand 3%, calcite 1%, magnesia 1%.The powder mix that adds together (continous batching adds continuously) ball mill grinding to become the logical sieve rate of 325 orders to be greater than 98% after batching, put into again the pot of granulating, mist projection granulating, after particle is screened according to Production requirement, be dried to biodiversity content not higher than 5%, then enter in rotary kiln, at 1320 ℃ of temperature, fire as finished product through 0.5h.After testing, the volume density of finished product is 1.36g/cm
3, volume density is 2.56g/cm
3, when locking pressure is 40MPa, percentage of damage is 7.25%.Other index also all meets the industry standard of national oil and gas SY/T 5108-2006.
Embodiment 3
At first bauxite, pebbles, potassium felspar sand, calcite, each raw material of magnesia are broken into respectively to the particle that is less than 10mm, then prepare burden by mass percentage: bauxite 80%, pebbles 15%, potassium felspar sand 2%, calcite 1%, magnesia 2%.The powder mix that adds together (continous batching adds continuously) ball mill grinding to become the logical sieve rate of 325 orders to be greater than 98% after batching, put into again the pot of granulating, mist projection granulating, after particle is screened according to Production requirement, be dried to biodiversity content not higher than 5%, then enter in rotary kiln, at 1340 ℃ of temperature, fire as finished product through 1.5h.After testing, the volume density of finished product is 1.37g/cm
3, volume density is 2.57g/cm
3, when locking pressure is 40MPa, percentage of damage is 7.01%.Other index also all meets the industry standard of national oil and gas SY/T 5108-2006.
Embodiment 4
At first bauxite, pebbles, potassium felspar sand, calcite, each raw material of magnesia are broken into respectively to the particle that is less than 10mm, then prepare burden by mass percentage: bauxite 75%, pebbles 20%, potassium felspar sand 1%, calcite 1%, magnesia 3%.The powder mix that adds together (continous batching adds continuously) ball mill grinding to become the logical sieve rate of 325 orders to be greater than 98% after batching, put into again the pot of granulating, mist projection granulating, after particle is screened according to Production requirement, be dried to biodiversity content not higher than 5%, then enter in rotary kiln, under 1350 ℃, fire as finished product through 1h.The volume density of finished product is 1.35g/cm after testing
3, volume density is 2.55g/cm3, when locking pressure is 40MPa, percentage of damage is 8.52%.Other index also all meets the industry standard of national oil and gas SY/T 5108-2006.
Claims (5)
1. one kind is utilized the extremely-low density ceramsite propping agent that pebbles is main additive, it is characterized in that being made by each raw material of following quality percentage composition: bauxite 75 ~ 85%, pebbles 5 ~ 20%, potassium felspar sand 1 ~ 5%, calcite 1 ~ 4%, magnesia 1 ~ 3%; The preparation method: each raw material is broken rear by proportioning mixing, mist projection granulating respectively, finally at 1300 ~ 1350 ℃ of sintering 0.5 ~ 2h, form.
2. extremely-low density ceramsite propping agent as claimed in claim 1 is characterized in that: in the quality percentage composition, and Al in described bauxite
2o
3be 60 ~ 68%, Fe
2o
3<2%; SiO in described pebbles
2>90%, Fe
2o
3<2.5%; K in described potassium felspar sand
2o+Na
2o>13%; CaCO in described calcite
3>=95%; MgO in described magnesia>85%.
3. a method for preparing extremely-low density ceramsite propping agent as claimed in claim 1 or 2, is characterized in that: each raw material is pressed to proportioning mixing, mist projection granulating after fragmentation respectively, finally form at 1300 ~ 1350 ℃ of sintering 0.5 ~ 2h.
4. preparation method as claimed in claim 3, is characterized in that: each raw material is broken into respectively to the particle that is less than 10mm, the powder mix that then by proportioning mixed grinding to 325 mesh sieve percent of pass, is greater than 98%.
5. preparation method as claimed in claim 3 is characterized in that: after granulation, through screening, by the particle drying that obtains to biodiversity content not higher than 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210143576.4A CN102676151B (en) | 2012-05-10 | 2012-05-10 | Ultra-low-density ceramic proppant taking pebbles as main additive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210143576.4A CN102676151B (en) | 2012-05-10 | 2012-05-10 | Ultra-low-density ceramic proppant taking pebbles as main additive and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102676151A CN102676151A (en) | 2012-09-19 |
| CN102676151B true CN102676151B (en) | 2013-12-25 |
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|---|---|---|---|
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| CN107244903A (en) * | 2017-06-30 | 2017-10-13 | 长兴泓矿炉料有限公司 | Magnesium chromium Tercod and preparation method thereof |
| CN114133923B (en) * | 2021-11-12 | 2023-07-04 | 郑州蓝拓实业有限公司 | Ceramsite propping agent added with plastic inorganic material and preparation method thereof |
| CN117142872A (en) * | 2023-08-31 | 2023-12-01 | 郑州市润宝耐火材料有限公司 | Ceramsite propping agent prepared from high-siliceous raw materials and preparation method thereof |
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| CN101717628B (en) * | 2009-11-20 | 2013-02-20 | 三门峡方圆实业股份有限公司 | Low-density ceramsite propping agent and preparation method thereof |
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Effective date of registration: 20161025 Address after: Mianchi County, the Western Avenue in Sanmenxia city of Henan Province in 472400 Patentee after: Mianchi Dehui Petroleum Proppant Co.,Ltd. Address before: Mianchi County, the Western Avenue in Sanmenxia city of Henan Province in 472400 Patentee before: SANMENXIA FANGYUAN INDUSTRIAL Co.,Ltd. |
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