Low-density ceramsite propping agent made from flint clay clinker and dolomite and preparation method of low-density ceramsite propping agent

A dolomite and low-density technology, which is applied in the direction of chemical instruments and methods, earthwork drilling, drilling compositions, etc., can solve the problems of large-scale and large-scale production of ceramsite proppants, unstable product performance, and mixing materials. Unevenness and other problems, to achieve the effect of reducing mining costs, reducing body density, and relieving operating pressure

Active Publication Date: 2016-12-07
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In short, in the prior art, low-density and high-strength ceramsite proppants made of burnt gemstones are generally prepared by mixing various raw materials. The reason is that strength enhancers such as bauxite and zircon sand are often added to improve mechanical strength. , titanium concentrate, etc. In order to improve the spheroidity of ceramsite, clay and binders are often added, which often leads to uneven mixing during the mixing process, abnormal growth of grains during the sintering process, and poor performance of the final product. Stable, not conducive to large-scale and large-scale production of ceramsite proppant

Method used

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  • Low-density ceramsite propping agent made from flint clay clinker and dolomite and preparation method of low-density ceramsite propping agent
  • Low-density ceramsite propping agent made from flint clay clinker and dolomite and preparation method of low-density ceramsite propping agent
  • Low-density ceramsite propping agent made from flint clay clinker and dolomite and preparation method of low-density ceramsite propping agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the low-density ceramsite proppant with burnt gem clinker and dolomite as raw materials, it includes burnt gem clinker and dolomite, the mass percentage of various raw materials is: burnt gem clinker 96%, dolomite 4% , the total amount of the burnt gem clinker and dolomite is 100%.

[0034] Further, the chemical composition of the burnt gem clinker is as follows by weight: Al 2 o 3 Content is 50%, SiO 2 The content is 32%, TiO 2 The content is 3%, Fe 2 o 3 The content is 1%, and the other content is 14%.

[0035] Further, the chemical composition of the dolomite is as follows by weight ratio: CaO content is 32%, MgO content is 22%, Fe 2 o 3 The content is 0.1%, SiO 2 The content is 1%, Al 2 o 3 The content is 0.05%, and the loss on ignition is 43.85%.

[0036] The method for preparing the above-mentioned low-density ceramsite proppant using burnt gem clinker and dolomite as raw materials is characterized in that it is carried out i...

Embodiment 2

[0047] Such as figure 2 As shown, the low-density ceramsite proppant with burnt gem clinker and dolomite as raw materials, it includes burnt gem clinker and dolomite, the mass percentage of various raw materials is: burnt gem clinker 94%, dolomite 6% , the total amount of the burnt gem clinker and dolomite is 100%.

[0048] Further, the chemical composition of the burnt gem clinker is as follows by weight: Al 2 o 3 The content is 52%, SiO 2 The content is 31%, Fe 2 o 3 The content is 0.5%, TiO 2 The content is 3%, and the other content is 13.5%.

[0049] Further, the chemical composition of the dolomite is as follows by weight ratio: CaO content is 34%, MgO content is 23%, Fe 2 o 3 The content is 0.2%, SiO 2 The content is 0.8%, Al 2 o 3 The content is 0.08%, and the loss on ignition is 41.92%.

[0050] The method for preparing the above-mentioned low-density ceramsite proppant using burnt gem clinker and dolomite as raw materials is characterized in that it is ca...

Embodiment 3

[0059] Such as image 3 As shown, the low-density ceramsite proppant with burnt gem clinker and dolomite as raw materials, it includes burnt gem clinker and dolomite, the mass percentage of various raw materials is: burnt gem clinker 90%, dolomite 10% , the total amount of the burnt gem clinker and dolomite is 100%.

[0060] Further, the chemical composition of the burnt gem clinker is as follows by weight: Al 2 o 3 The content is 54%, SiO 2 The content is 28%, Fe 2 o 3 Content is 1%, TiO 2 The content is 2.5%, and the other content is 14.5%.

[0061] Further, the chemical composition of the dolomite is as follows by weight ratio: CaO content is 35%, MgO content is 22%, Fe 2 o 3 The content is 0.2%, SiO 2 The content is 1.5%, Al 2 o 3 The content is 1%, and the loss on ignition is 41.3%.

[0062] The method for preparing the above-mentioned low-density ceramsite proppant using burnt gem clinker and dolomite as raw materials is characterized in that it is carried ou...

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Abstract

The invention discloses a low-density ceramsite propping agent made from flint clay clinker and dolomite and a preparation method of the low-density ceramsite propping agent, and belongs to the technical field of propping agents for hydrofracture construction and exploitation of oil and gas fields, solving the problems of product performance instability and incapability of mass production due to uneven blending and abnormal growth of crystalline grains during sintering in the prior art. The ceramsite propping agent is prepared through raw material ball-milling, pelleting, drying, sintering and sieving, and comprises, by mass, 86-98% of the flint clay clinker and 2-14% of the dolomite, wherein the total quantity of the flint clay clinker and the dolomite is 100%. The prepared ceramsite propping agent has the advantages of high uniformity of prepared ceramsites, high compressive strength, stable performance, low volume density, low apparent density, high anti-crushing capability, high surface smoothness and the like, has excellent performance such as high temperature resistance and corrosion resistance, and can be applied to high-temperature and high-corrosion underground environments for a long time, and performance of the low-density ceramsite propping agent meets technical standards of SY/T5108-2014.

Description

technical field [0001] The invention belongs to the technical field of proppants used in hydraulic fracturing construction of oil and gas fields, and in particular relates to a low-density ceramsite proppant prepared by using burnt gem clinker and dolomite as raw materials and a preparation method thereof. Background technique [0002] Ceramsite proppant is a key material used in oil, natural gas, shale gas, coalbed methane and other low-permeability oil and gas wells during mining and fracturing construction. Oil wells fractured with ceramsite proppant can not only increase oil and gas production, but also extend the service life of oil and gas wells. The performance requirements of the ceramsite proppant mainly include: 1. The proppant should have sufficiently high compressive strength and wear resistance, be able to withstand the strong pressure and friction during injection, and effectively support artificial fractures. 2. The relative density of proppant particles shou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80C04B35/185C04B35/622C04B35/626
CPCC04B35/185C04B35/622C04B35/62605C04B35/62695C04B2235/3463C04B2235/442C04B2235/606C04B2235/77C04B2235/94C04B2235/95C04B2235/96C09K8/80
Inventor 武雅乔王凯悦田玉明郝建英周毅力国民邹欣伟
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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