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Ultrahigh strength corrosion resistant composite ceramic fracturing propping agent

A fracturing proppant and composite ceramic technology, which is applied in drilling compositions, production fluids, wellbore/well components, etc., can solve the problem of reduced pressure resistance and corrosion resistance of proppant, and can not meet the long-term downhole bearing capacity. In order to reduce the mining cost and construction difficulty, good sphericity and smoothness, and low turbidity

Inactive Publication Date: 2019-04-19
郑州可塑金新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent has the following disadvantages: due to the existence of the polymer coating, it cannot meet the requirements of the underground environment with a temperature greater than 200°C; at the same time, once the coating is broken under high temperature and pressure, the compressive effect and corrosion resistance of the proppant will be reduced. The sharp drop, unable to meet the requirements of long-term pressure-bearing underground use
[0006] The invention patent with domestic application number 200910102790.3 provides an ultra-high-strength, ultra-high-density ceramsite proppant and its manufacturing method. The compressive strength of the proppant has only reached 103MPa, and its density is relatively high (apparent density> 3.5), unable to meet the requirements of deep wells and ultra-deep wells with a depth of more than 2-3km

Method used

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  • Ultrahigh strength corrosion resistant composite ceramic fracturing propping agent
  • Ultrahigh strength corrosion resistant composite ceramic fracturing propping agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Ingredients: according to 83wt% high-purity ultra-fine Al 2 o 3 , 3wt% ultrafine kaolin, 10wt% ultrafine ZrO 2 , 1wt% CaO, 0.5wt% SiO 2 , 0.5wt% MgO and 2wt% lignin were weighed.

[0031] 2) Mixing: Add the material in the barrel in step 1) into a three-dimensional stereo mixer and mix for 3.5 hours.

[0032] 3) trapped material: add 7wt% water to the material mixed in step 2) on a pan granulator for mixing, and mix evenly and trap the material for 48 hours.

[0033] 4) Granulation: transfer the material in step 3) to a dual-power powerful granulator, add an aqueous solution containing 8 wt% glycerin and 1-1.5 wt% povidone K90 for water spray granulation.

[0034] 5) Shaping and densification: Transfer the material in step 4) to a tilting sugar coating machine, and treat it at 70°C for 3 hours to remove moisture and gas, and increase the density, sphericity and smoothness of the semi-finished product.

[0035]6) Screening: sieving the encrypted semi-finished pro...

Embodiment 2

[0038] 1) batching: carry out according to embodiment 1.

[0039] 2) mixing: carry out according to embodiment 1.

[0040] 3) sleepy material: carry out according to embodiment 1.

[0041] 4) Granulation: Carry out according to Example 1.

[0042] 5) Shaping encryption: Carry out according to embodiment 1.

[0043] 6) Screening: The encrypted material obtained in step 5) is screened with a 30-50 mesh sieve machine to obtain an encrypted semi-finished product with a required particle size.

[0044] 7) Sintering: according to Example 1, an ultra-high-strength corrosion-resistant composite ceramic fracturing proppant with a particle size of 300-600 μm can be obtained.

Embodiment 3

[0046] 1) batching: carry out according to embodiment 1.

[0047] 2) mixing: carry out according to embodiment 1.

[0048] 3) sleepy material: carry out according to embodiment 1.

[0049] 4) Granulation: Carry out according to Example 1.

[0050] 5) Shaping encryption: Carry out according to embodiment 1.

[0051] 6) Screening: The encrypted semi-finished product obtained in step 5) is screened with a 20-40 mesh sieve to obtain an encrypted semi-finished product with a required particle size.

[0052] 7) Sintering: according to Example 1, an ultra-high-strength corrosion-resistant composite ceramic fracturing proppant with a particle size of 425-850 μm can be obtained.

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Abstract

The invention belongs to the field of oil exploitation aids, and especially relates to an ultrahigh strength corrosion resistant composite ceramic fracturing propping agent. The propping agent comprises following components in percentage by weight: 80 to 85 wt.% of high pure ultrafine Al2O3; 1 to 3 wt.% of ultrafine kaolin, 10 to 15 wt.% of ultrafine ZrO3, 0.5 to 1.0 wt.% of CaO, 0.3 to 0.5 wt.% of SiO2, 0.3 to 0.8 wt.% of MgO, and 2.0 to 3.5 wt.% of lignin. The raw materials are mixed, blended, aged, and granulated, and then the particles are moulded, compacted, screened and sintered to prepare the fracturing propping agent with a controllable diameter of 100 to 900 [mu]m. The prepared fracturing propping agent has the advantages of high strength, good corrosion resistant property, and high roundness, and can be widely used in fields of deep mining, super deep mining, and deep sea oil and gas exploitation, and the preparation method is innovative.

Description

technical field [0001] The invention belongs to the field of petroleum exploitation additives, in particular to an ultra-high-strength corrosion-resistant composite ceramic fracturing proppant. Background technique [0002] With the rapid development of the global economy and people's higher and higher requirements for material culture, the global demand for oil and gas is also increasing. my country's consumption of oil and gas resources is huge and its dependence on foreign countries is extremely high. At the same time, our country is also facing the problem that the shallow oil and gas wells are about to be fully developed, and there are more and more old and deep wells. In order to cope with this increasingly tense energy supply crisis, it is becoming more and more urgent to develop deep and ultra-deep oil and gas resources and offshore oil and gas resources. In order to increase the service life of oil and gas fields, hydraulic fracturing technology is usually used fo...

Claims

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Application Information

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IPC IPC(8): C09K8/80
CPCC09K8/80
Inventor 裴一兵张军晓陈黎霞
Owner 郑州可塑金新材料有限公司
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