Spinel high-strength petroleum fracturing proppant and production method thereof
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A fracturing proppant and spinel-based technology, applied in the field of fracturing proppant, can solve the problems of unsatisfactory performance requirements and low pressure bearing capacity, and achieve easy promotion and implementation, strong anti-fragmentation ability, and excellent product performance Effect
Active Publication Date: 2012-07-18
郑州德赛尔陶粒有限公司
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This product has good acid corrosion resistance, but its pressure bearing capacity is low, only reaching 69MPa, which cannot meet the performance requirements of the existing solid proppant for oil and gas well fracturing
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Embodiment 1
[0019] Embodiment 1: spinel high-strength ceramsite proppant and production method thereof
[0020] Raw materials: by weight percentage, bauxite raw meal 65%, forsterite 8%, dolomite 2.5%, boric acid 1%, manganese ore powder 3.5%, magnesium spinel 20%, see Table 2.
[0021] Production method: Weigh each raw material, grind them into fine powder, pass through a 320-mesh sieve, and the sieving rate is greater than 98.5%; mix the raw materials evenly, add atomized water into the rotary granulator at the same time, and make the mixture into a size Different round grains are passed through a 18-30 mesh sieve, and the sieving rate is required to be greater than 90%, and then rotated for 15-20 minutes, and the semi-finished product is obtained after passing through a 18-30 mesh sieve;
[0022] Send the semi-finished product into an oven at 200-250°C for 2-3 hours, and dry it until the moisture content is below 6%; lift the semi-finished product into the silo, and send it to the rotar...
Embodiment 2
[0023] Embodiment 2: The raw material composition is shown in Table 2, and the production method is basically the same as in Example 1, the difference being:
[0024] When the baked semi-finished product is fired in the rotary kiln, the temperature at the kiln head is 1300-1350°C, the temperature at the kiln tail is 295-310°C, and it will leave the kiln after firing for 7.5 hours.
Embodiment 3
[0025] Embodiment 3: The raw material composition is shown in Table 2, and the production method is basically the same as in Example 1, the difference being:
[0026] When the baked semi-finished product is fired in the rotary kiln, the temperature at the kiln head is 1320-1365°C, the temperature at the kiln tail is 300-315°C, and it will leave the kiln after firing for 7.5 hours.
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Abstract
The invention relates to spinel high-strength petroleum fracturing proppant and a production method thereof. The proppant comprises the following raw materials: 63-70% of raw bauxite, 5-10% of forsterite, 2.5-6% of dolomite, 0.5-3% of boric acid, 3-7% of manganese ore powder and 13-20% of magnesium spinel. The production method comprises the following steps of: respectively grinding each raw material into fine powder during the preparation and screening by a 320-mesh sieve; mixing uniformly to obtain a mixture, then feeding the mixture to a rotary granulator while adding atomized moisture, preparing the mixed material into round grains and screening by a sieve with 18-30 meshes to obtain a half-finished product; drying the half-finished product till the moisture content is less than 6%; and transferring the dried half-finished product to a rotary kiln to bake, controlling temperature of a kiln head to be 1285 to 1400 DEG C and temperature of a kiln end to be 280 to 325 DEG C and burning for 6-8h and the discharging out of the kiln. According to the invention, the raw materials form a large amount of magnesium aluminate spinel phases at high temperature so as to play a supporting role of a skeleton; the obtained spinel high-strength petroleum fracturing proppant has the advantages of good compactness and strong anti-crushing capacity; the breakage rates of the spinel high-strength petroleum fracturing proppant at 52 MPa, 69 MPa and 86 MPa respectively are respectively less than 3.5%, less than 7.5% and less than 10.5%, the strength of the spinel high-strength petroleum fracturing proppant is higher than that of the products of the same kind and the performance of the spinel high-strength petroleum fracturing proppant is excellent; and meanwhile, the production techniqueis optimized, low in cost and easy to promote and implement.
Description
technical field [0001] The invention relates to a fracturing proppant used in the petroleum industry, in particular to a spinel high-strength petroleum proppant and a production method thereof. Background technique [0002] Fracturing proppants are required in the fracturing process of oil and natural gas deep well mining to provide high-permeability channels for oil and gas circulation, maintain high conductivity, and increase oil and gas production. my country's petroleum industry generally refers to proppants with a pressure bearing capacity of 69MPa and 86MPa as high-strength ceramsite proppants. After searching, the patent application with application number 200410010272.6 discloses a ceramsite proppant and its preparation method, and its raw material composition is: Al 2 o 3 74-80%, SiO 2 5.5-10.5%, Fe 2 o 3 4-9%, TiO 2 2.5-3.5%. Stir the above raw materials evenly, roll them into balls through water vapor atomization, and sinter at high temperature. The p...
Claims
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