Ceramic proppant for oil and gas fracturing and preparation method thereof

A technology of oil pressure and proppant, which is applied in chemical instruments and methods, earthwork drilling, and fluid production, etc., can solve the problems of high firing temperature, high production cost, and increase the cost of oil and gas production and fracturing construction. cost, to achieve comprehensive utilization, the effect of strong anti-shredding ability

Active Publication Date: 2016-02-03
阳泉市长青石油压裂支撑剂有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the rapid development and large demand of ceramsite sand fracturing proppant, the raw material prices of high-grade bauxite and kaolin continue to soar. The cost of mining fracking construction
At the same time, high-grade bauxite or kaolin requires a relatively high firing temperature for preparing ceramsite sand, generally higher than 1450°C. With the continuous increase in the price of natural gas and other energy sources, ceramsite proppant for oil and gas fracturing has been increased to a certain extent. production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The bauxite ore, solid waste ceramsite sand, and dolomite are respectively ground to a particle size smaller than the sieve size of a 325-mesh standard sieve. According to the weight percentage, 74% of bauxite ore, 20% of solid waste ceramsite sand, MnO 2 3% and 3% of dolomite, and add an appropriate amount of plasticizer to fully mix, then add 15% water or aqueous solution to granulate, screen out 20-40 mesh spheres and dry to obtain semi-finished products, and semi-finished products are separated at 1240 ° C , 1260°C, 1290°C, 1320°C, 1350°C and fired at 1260°C, 1290°C, 1320°C, 1350°C, after rapid cooling and sieving of the product, a 20-40 mesh alumina / mullite composite phase ceramsite proppant for oil and gas fracturing can be obtained.

[0016] The prepared alumina / mullite composite phase ceramsite proppant for oil and gas fracturing, the primary and secondary phases are alumina and mullite respectively, ceramics fired at 1240°C, 1260°C, 1290°C, 1320°C, 1350°C The s...

Embodiment 2

[0018] The bauxite ore, solid waste ceramsite sand, and dolomite are respectively ground to a particle size smaller than the sieve size of a 325-mesh standard sieve. According to the weight percentage, 70% of bauxite ore, 25% of solid waste ceramsite sand, MnO 2 1% and 4% of dolomite, and add an appropriate amount of plasticizer for full mixing, then add 13% of water or aqueous solution for granulation, screen out 20-40 mesh spheres and dry to obtain semi-finished products, semi-finished products at 1310 ° C After firing, the product is rapidly cooled and sieved to obtain a 20-40 mesh alumina / mullite composite phase ceramsite proppant for oil and gas fracturing.

[0019] The prepared alumina / mullite composite phase ceramsite oil and gas fracturing proppant, the primary and secondary phases are alumina and mullite respectively, the sphericity of the ceramsite oil and gas fracturing proppant is 0.9, and the turbidity is less than 60FTU , the acid solubility is less than 5%, and ...

Embodiment 3

[0021] The bauxite ore, solid waste ceramsite sand, and dolomite are respectively ground to a particle size smaller than the sieve size of a 325-mesh standard sieve, according to the weight percentage of bauxite ore 80%, solid waste ceramsite sand 15%, MnO 2 3% and 2% of dolomite, and add an appropriate amount of plasticizer for full mixing, then add 10% water or aqueous solution for granulation, screen out 20-40 mesh spheres and dry to obtain semi-finished products, semi-finished products at 1380 ° C After firing, the product is rapidly cooled and sieved to obtain a 20-40 mesh alumina / mullite composite phase ceramsite proppant for oil and gas fracturing.

[0022] The prepared alumina / mullite composite phase ceramsite oil and gas fracturing proppant, the primary and secondary phases are alumina and mullite respectively, the sphericity of the ceramsite oil and gas fracturing proppant is 0.9, and the turbidity is less than 60FTU , the acid solubility is less than 5%, and the bul...

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Abstract

The invention relates to a ceramsite oil-gas fracturing propping agent prepared from solid waste ceramsite sand and a preparation method of the ceramsite oil-gas fracturing propping agent, belonging to the technical field of a propping agent for ceramic materials and oil and gas field fracturing construction and exploration. According to the propping agent, solid waste ceramsite sand, bauxite, MnO2 and dolomite are used as raw materials, wherein the percentages by mass of the solid waste ceramsite sand, the bauxite, the MnO2 and the dolomite are respectively 15-25%, 70-80%, 1-3% and 2-4%, and the sum of the percentages is 100%. The preparation method comprises the following steps: preparing raw materials according to a ratio, adding an appropriate amount of an adhesive, uniformly mixing, adding water or a water solution which is 10-15wt% of the mixed material, pelleting, screening granules with expected specification, drying and sintering at a high temperature so as to prepare the composite-phase ceramsite oil-gas fracturing propping agent of which the main crystal phase is Al2O3 and the secondary crystal phase is mullite 3Al2O3.2SiO2. Due to adoption of the preparation method, the aluminum oxide / mullite composite-phase ceramsite oil-gas fracturing propping agent can be prepared with low cost, pollution of the solid waste ceramsite sand is reduced, and the comprehensive utilization of the solid waste ceramsite sand is achieved.

Description

Technical field: [0001] The invention relates to a ceramsite oil-gas fracturing proppant prepared by using solid waste ceramsite sand and a preparation method thereof, and belongs to the technical field of ceramic materials and proppant used in oil-gas field fracturing construction. Background technique: [0002] Solid waste ceramsite sand is some unqualified products discharged by ceramsite oil and gas fracturing proppant manufacturers and the fine powder attached to the products. The main chemical composition is Al 2 o 3 , SiO 2 , Fe 2 o 3 and TiO 2 . At present, most of the solid waste is piled up in the factory area or dumped in the surrounding potholes. With the soaking of rain and snow, it gradually pulverizes, and the fineness after pulverization is small, which easily causes dust pollution in the surrounding area. , which not only causes serious environmental pollution, but also occupies a large amount of land resources, and leads to the waste of a large amount...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/80
CPCC04B35/10C04B35/185C09K8/80
Inventor 白频波李占刚马晓娟田玉明柴跃生
Owner 阳泉市长青石油压裂支撑剂有限公司
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