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A kind of ultra-high-density ultra-high-strength ceramsite proppant and preparation method thereof

An ultra-high-strength, ultra-high-density technology, used in earth-moving drilling, wellbore/well components, production fluids, etc., can solve the problems of weak anti-breakage ability, affect the durability and adaptability of proppant, etc., to achieve optimization Anti-shredding ability, simple and easy preparation method, good stability effect

Active Publication Date: 2019-09-03
XINMI WANLI IND DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the breakage rate of the above-mentioned ceramsite proppant at 100MPa is 8.54-9.47%, that is, its anti-breakage ability is not strong, and its acid solubility is 5.6-6.2%. Too high acid solubility will affect the durability and adaptability of the proppant. performance

Method used

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  • A kind of ultra-high-density ultra-high-strength ceramsite proppant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The ultra-high-density ultra-high-strength ceramsite proppant of this embodiment is composed of the following components in weight percent:

[0025] Magnesia-alumina spinel 12%, brown corundum 8%, raw bauxite 60%, cooked bauxite 10%, α-alumina micropowder 5%, FeO 0.25%, CaO 0.25%, dolomite 0.5%, manganese ore 4%; among them, Al in magnesium aluminum spinel 2 o 3 The mass content is 45%; Al in brown corundum 2 o 3 The mass content of ≥95%; Al in raw bauxite 2 o 3 The mass content is 70%; Al in cooked bauxite 2 o 3 The mass content is 80%; MnO in manganese ore 2 The mass content of ≥60%.

[0026] The preparation method of the ultra-high-density ultra-high-strength ceramsite proppant in this embodiment comprises the following steps:

[0027] The above-mentioned various raw materials are co-ground into fine powder with a 325-mesh sieve pass rate greater than 98% according to the formula, and then mixed with a ball mill for 1 hour and then transferred to a granulati...

Embodiment 2

[0029] The ultra-high-density and ultra-high-strength ceramsite proppant of this embodiment is composed of the following components in weight percent: magnesia-alumina spinel 12%, brown corundum 5%, raw bauxite 50%, cooked bauxite 20% %, α-alumina fine powder 8%, FeO 0.25%, MgO 0.25%, dolomite 0.5%, manganese ore 4%; Al in magnesium aluminum spinel 2 o 3 The mass content is 55%; Al in brown corundum 2 o 3 The mass content of ≥95%; Al in raw bauxite 2 o 3 The mass content is 75%; Al in cooked bauxite 2 o 3 The mass content is 88%; MnO in manganese ore 2 The mass content of ≥60%.

[0030] The preparation method of the ultra-high-density ultra-high-strength ceramsite proppant in this embodiment comprises the following steps:

[0031] According to the formula, the above-mentioned various ore raw materials are co-ground into a fine powder with a passing rate of 325 mesh sieves greater than 98%, mixed with a ball mill for 2 hours, and then transferred to a granulation pot. ...

Embodiment 3

[0033] The ultra-high-density ultra-high-strength ceramsite proppant of this embodiment is composed of the following components in weight percent:

[0034] Magnesia-alumina spinel 13%, brown corundum 8%, raw bauxite 50%, cooked bauxite 13%, α-alumina fine powder 10%, FeO 0.5%, ZnO 0.5%, dolomite 1%, manganese ore 4 %; Al in magnesium aluminum spinel 2 o 3 The mass content is 50%; Al in brown corundum 2 o 3 The mass content of ≥95%; Al in raw bauxite 2 o 3 The mass content is 70%; Al in cooked bauxite 2 o 3 The mass content is 85%; MnO in manganese ore 2 The mass content of ≥60%.

[0035] The preparation method of the ultra-high-density ultra-high-strength ceramsite proppant in this embodiment comprises the following steps:

[0036] According to the formula, the above-mentioned various ore raw materials are co-ground into a fine powder with a passing rate of 325 mesh sieves greater than 98%, mixed with a ball mill for 1.5 hours, and then transferred to a granulation po...

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Abstract

The invention relates to an ultra-high-density ultra-high intensity ceramic particle proppant and a preparation method thereof, and belongs to the technical field of solid proppants for an oil and gas well fracturing process. The ultra-high-density ultra-high intensity ceramic particle proppant provided by the invention is prepared from the following ingredients in percentage by weight: 10 to 30 percent of magnesium aluminate spinel, 5 to 15 percent of brown aluminum oxide, 30 to 60 percent of raw bauxite, 10 to 20 percent of sintered bauxite, 5 to 25 percent of alpha aluminum oxide, 0.1 to 2 percent of composite mineralizers, 0.1 to 2 percent of dolomite and 4 to 8 percent of manganese ore. The ultra-high-density ultra-high intensity ceramic particle proppant provided by the invention has the bulk density being 1.93 to 2.03g / cm<3> and the apparent density being 3.43 to 3.63g / cm<3>; when the closing pressure is 103Mpa, the crushing rate is lower than or equal to 5 percent; the acid solubility is 4.01 to 4.63 percent; other indexes also conform to the national petroleum and natural gas industry standard SY / T 5108-2014.

Description

technical field [0001] The invention relates to an ultra-high-density, ultra-high-strength ceramsite proppant and a preparation method thereof, belonging to the technical field of solid proppant used in oil and gas well fracturing techniques. Background technique [0002] With the continuous exploitation of oil and natural gas resources, the depth of oil reservoirs gradually increases. In order to ensure the high permeability channel of oil and gas flow and long-term stable flow diversion capacity, and increase the output of oil and gas fields, to a certain extent reduce the In order to reduce the investment of operating time, the oil and gas field urgently needs a high-density and high-strength ceramsite proppant material. In the petroleum proppant industry, the bulk density is generally not less than 1.90g / cm 3 , The ceramsite proppant whose fracture rate is not more than 5.0% under the closure pressure of 86Mpa is called ultra-high density ceramsite proppant. Ultra-high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/80
Inventor 王长太王万里黄永伟贾留千张东言韩新霞张鹏远
Owner XINMI WANLI IND DEV