CN1017523B - Selid propping agent and making method thereof - Google Patents
Selid propping agent and making method thereofInfo
- Publication number
- CN1017523B CN1017523B CN 89102544 CN89102544A CN1017523B CN 1017523 B CN1017523 B CN 1017523B CN 89102544 CN89102544 CN 89102544 CN 89102544 A CN89102544 A CN 89102544A CN 1017523 B CN1017523 B CN 1017523B
- Authority
- CN
- China
- Prior art keywords
- propping agent
- density
- fracturing
- present
- main raw
- 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.)
- Expired
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- Compositions Of Oxide Ceramics (AREA)
- Glass Compositions (AREA)
Abstract
The present invention discloses a solid supporting agent for fracturing deep oil wells and gas wells. The compressive strength of single particles is above 390MPa, the density is from 2.8 to 3.0 g/cm+(3), the crushing rate is from 0.8 to 1.6% under the pressure of 60MPa, the sphericity is larger than or equal to 0.9, and surface flatness is high. The product uses bauxite below a third stage as main raw materials, a small amount of inorganic additives are added, and the main raw materials are melted by an electric arc furnace and are injected into balls. The present invention has the characteristics of high anti-compression strength, low crushing rate, moderate density, low cost, etc., and is especially suitable for fracturing oil wells and gas wells of 3000 to 4500 meters.
Description
The present invention relates to a kind of Selid propping agent that is used for deep-seated oil, gas well fracturing.
Waterfrac treatment technology since constructing first in the forties end, has been selected for use the proper supporting agent to inject in the crack and has been prevented crack closure, is subjected to people's great attention always.The propping agent of Shi Yonging is a nature sand the earliest, up to present shallow-layer oil, the pressure break of gas well is still used quartz sand, exploitation along with the development of fracturing technique and deep-well low-permeability oil, gas well, performance requriements to propping agent is also more and more higher, and this mainly is that the requirement propping agent should have high compression strength (greater than 200MPa), and lower percentage of damage (under 60MPa pressure≤4%) degree of sphericity, surface flatness will be got well, chemical stability is good, and it is moderate etc. that density is wanted.More than these characteristics be that nature sand institute is inaccessiable, so people are also more and more to artificial stays agent research.
Artificial stays agent at present of a great variety, wide adaptability is used in the fracturing technology now in a large number.From external artificial stays agent, can be divided into three kinds of high alumina matter, mullite and porcelains on the material; Can be divided into two kinds of sintering process and electric arc melting blowing processes on the production technique.The most high alumina matter haydites (US.3890072, US.4068718) of external artificial stays agent for sintering process production, minority mullite sintering ceramsite (EPO.169412) is also arranged, the former has high compression strength and lower percentage of damage, but its density height (〉=3.4g/cm
3) influencing the fracturing liquid prop-carrying capacity, its price is higher, though latter's density is lower, low price, its ultimate compression strength is low, the percentage of damage height.The propping agent majority of domestic production is an electric arc melting winding-up bauxitic clay haydite, and the production technique of this kind product is simple, and less investment, product degree of sphericity, surface flatness are better than the propping agent that sintering process is produced, density (3.2g/cm
3) also less than sintered bauxite haydite (〉=3.4g/cm
3), but ultimate compression strength is poor, and broken high, cost also is higher than sintering ceramsite.Its balling-up is loose because of sintering temperature (1300-1450 ℃) is lower than external sintering temperature (1450-1550 ℃) for the propping agent that domestic sintering process is produced, though cost is low, and density height (3.51g/cm
3), ultimate compression strength low (110MPa-198.9MPa), the percentage of damage height is (under 60MPa pressure: 4.4-32%), if use this kind propping agent, will directly influence post-fracturing zone permeability and flow conductivity.Its complex manufacturing is invested big simultaneously.From raw materials for production, though it is good to select for use high aluminium ore to do the quality of the propping agent that raw material makes, it is also high to consume rich bauxite resource, cost.Just be to use the described use of European patent (EP.169412) to contain SIO
216-19%, the alkaline-earth metal total amount is made propping agent, the method that neither generally adopt less than 0.35% high bauxite clay.Because the high bauxite clay of this class is difficult to find in China, in China the tankage that a large amount of aluminum contents are low, do not have the bauxite ore of smelting value are arranged, at present domestic have a collection of small business to build up arc furnace equipment, but poor because of product, will be eliminated by pottery.Therefore if can utilize low aluminiferous bauxite ore and existing device and produce high-quality propping agent is the research topic that people pay close attention to.
The objective of the invention is, provide a kind of starting material source wide, manufacturing process is simple, the crushing resistance height, and percentage of damage is low, and degree of sphericity is good, and smooth surface is good, and the fracturing propping agents of intermediate density are with the needs of the pressure break that satisfies deep low-permeability oil, gas well.
The structure of pressure break Selid propping agent of the present invention mainly is to be made of mullite crystal and a small amount of glassiness, the manufacture method of propping agent of the present invention is :) poor bauxite or aluminium ore tankage are main raw material with salic 65-75%(by weight, with soft clay and quartz is auxiliary material, this propping agent chemical composition content: AL
2O
3Content be 60-67%(by weight), be preferably 65%, SIO
2Content be 23-28%(by weight) be preferably 25%, surplus is Fe
2O
3And TIO
2Deng impurity (for details see attached table 1).Because of powder can not directly enter electric arc furnace production, make powder become piece so add a certain amount of soft clay to increase brick intention, quartz is to be used for regulating AL
2O
3And SIO
2Ratio, make AL in the raw material
2O
3And SIO
2Content reaches best ratio.Confected materials is pulverized levigate to 200 orders in proportion, make the abundant mixing of raw material, add an amount of water and stir into humid soil, pressurization breaks into common fragment of brick, fragment of brick was put in the stoving oven at 1200-1400 ℃ of following roasting 2-4 hour, after the cooling, put into electric arc furnace again, with the fragment of brick fusion, use the compressed air spraying balling-up of 0.7MPa through 2500-3000 ℃ high temperature that electric arc produced then.Sift out 20-40 purpose particle after the cooling as oil, gas well fracturing propping agent.
The propping agent of Sheng Chaning adopts oil standard method promulgated by the ministries or commissions of the Central Government that its performance is measured as stated above, 20-40 purpose spheroidal particle, and its density is 2.8-3.0g/cm
3, single particle ultimate compression strength 〉=390MPa, under 60MPa pressure, percentage of damage is 0.8-1.6%, degree of sphericity 〉=0.9, wherein single particle ultimate compression strength is better than other products both at home and abroad, and percentage of damage, degree of sphericity all are better than domestic all propping agents, and density is intermediate density.Acid etching is 30 minutes in the hydrofluoric acid mixed solution of 65 ℃ 12% hydrochloric acid and 3%, and the single particle ultimate compression strength of surveying behind its acid etching is 315.3MPa, and this index also is better than propping agent both domestic and external.Its data see attached list 2.
Major advantage of the present invention:
1, this propping agent ultimate compression strength is higher than more than the 390MPa, be better than all propping agents both at home and abroad, percentage of damage is less than 0.8-1.6%, also be better than domestic propping agent, make the crack of pressure break be difficult for closure, increased the flow conductivity on stratum greatly, improved the output of crude oil and Sweet natural gas, can obtain high economic benefit, reduce the cost of crude oil and Sweet natural gas.
2, degree of sphericity of the present invention is good, smooth surface, and density is moderate, is carried by fracturing liquid easily to enter in the crack that presses off in fracturing process, helps carrying out smoothly and obtaining high economic benefit of pressing crack construction.
3, the present invention does main raw material to the tankage of poor bauxite ore deposit and aluminium ore, and the raw material abundance has not only reduced raw-material cost, and has produced the winding-up haydite that most quality index all surpass domestic and international sintering ceramsite and same process production.
4, the production technique of propping agent of the present invention is simple, less investment, and medium and small sized enterprises can both implement.
Embodiment of the present invention:
Choose wrought aluminium alumina, clay, quartz raw material through analysis of chemical elements, calculate its AL
2O
3And SIO
2Content, the chemical ingredients of raw material and content data such as subordinate list 1 in the example.
Above-mentioned raw materials is pressed mixing, levigate to 200 orders in 100: 15: 10, add suitable quantity of water then and stir into humid soil, break into fragment of brick, put stoving oven at 1200-1400 ℃ of following roasting 2-4 hour, put into the electric arc furnace fusion after the cooling, with the compressed air spraying balling-up of 0.7MPa.Sifting out 20-40 purpose particle gets final product with the propping agent pack as pressure break.
The chemical ingredients of raw material and content data table (subordinate list 1)
Chemical ingredients AL
2O
3SIO
2Fe
2O
3TiO
2Alkaline earth
The percentage composition total amount
Raw material
Bauxitic clay 73.00% 13.3% 2.70% 3.27% 0.91%
Clay 38.50% 36.9% 3.345% 0.45% 0.25%
Quartzy 95%
(subordinate list 2)
Behind the single particle 60MPa acid etching
Propping agent pressure resistance pressure degree of decoding degree of sphericity single particle
Spend broken rate pressure resistance
MPa % g/cm
3Degree MPa
This Selid propping agent 396.0 0.8-1.6 2.946 〉=0.9 315.2
U.S.'s sintering ceramsite 213.8 0.8-1.0 3.580 0.8 95.8
Chengdu sintering ceramsite 198.9 4.4 3.516 0.8 31.0
Yixing sintering ceramsite 110.7 28-32 2.600 0.8 83.3
Go into the street the winding-up haydite 142.6 7 3.260 0.9 104.2
Yu County winding-up haydite 133.3 8.8 3.381 0.9
The Zi Zhou haydite 143.6 13.5 3.233 0.9 126.8 of jetting
Annotate: 1, to choose the propping agent particle diameter be 0.56-0.63mm to the single particle intensity test
2, single particle ultimate compression strength is single particle ultimate compression strength handle 30 minutes in the hydrofluoric acid mixed solution of 65 ℃ 12% hydrochloric acid and 3% after behind the acid etching.
Claims (1)
1, a kind of Selid propping agent that is used for deep-seated oil, gas well fracturing, its alumina content is AL
2O
360-67%, density 2.8-3.0g/cm
3, it is characterized in that with salic being that poor aluminium vanadine or the aluminium ore tankage of 65-75% (by weight) are main raw material, be auxiliary material with soft clay and quartz, sio
2Content is 23-28% (by weight), and surplus is Fe
2O
3And Tio
2Deng impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89102544 CN1017523B (en) | 1989-04-26 | 1989-04-26 | Selid propping agent and making method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89102544 CN1017523B (en) | 1989-04-26 | 1989-04-26 | Selid propping agent and making method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1046776A CN1046776A (en) | 1990-11-07 |
| CN1017523B true CN1017523B (en) | 1992-07-22 |
Family
ID=4854781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89102544 Expired CN1017523B (en) | 1989-04-26 | 1989-04-26 | Selid propping agent and making method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1017523B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347405C (en) * | 2002-03-10 | 2007-11-07 | 宜兴东方石油支撑剂有限公司 | Solid propping agent and its preparation method |
| NO327355B1 (en) * | 2005-08-25 | 2009-06-15 | Etec As | Apparatus and method for fragmentation of hard particles. |
| EP2949694A1 (en) * | 2006-12-07 | 2015-12-02 | 3M Innovative Properties Company of 3M Center | Particles comprising a fluorinated siloxane and methods of making and using the same |
| CN101560382B (en) * | 2009-06-05 | 2011-03-23 | 清镇庄子铝铁矿山 | High-strength ceramsite propping agent and preparation method thereof |
| US9699879B2 (en) * | 2013-03-12 | 2017-07-04 | Foret Plasma Labs, Llc | Apparatus and method for sintering proppants |
-
1989
- 1989-04-26 CN CN 89102544 patent/CN1017523B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1046776A (en) | 1990-11-07 |
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