Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of ultra-low density synthetic ceramsite proppant and preparation method thereof

A technology of ultra-low density and proppant, which is applied in the direction of chemical instruments and methods, earthwork drilling, drilling composition, etc., can solve the problems of large energy consumption, complex processing, high sintering temperature, etc., and prevent excessive bonding , good mechanical strength, and the effect of improving yield

Active Publication Date: 2022-07-12
GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the inorganic type is mainly completed by granulation and sintering, which has high energy consumption; the organic type is mainly made of polymer materials, which will consume a large amount of resin materials; the composite type preparation method is divided into granulation-sintering-coating or granulation - Coating, both of them have the problems of complicated processing and uncontrollable quality. At the same time, a large amount of energy is required in the calcination process, which is not conducive to energy saving and emission reduction
For example, the Chinese invention patent with the publication number CN105131933A discloses "ultra-low density ceramsite proppant and its preparation method". In the preparation process, after the granulation is completed, it also includes drying and sintering steps, wherein the sintering temperature is 1200-1250°C, high temperature, high energy consumption

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of the ultra-low density synthetic ceramsite proppant of the present invention comprises the following steps:

[0025] (1) Put the inorganic non-metallic powder and the lightweight material into the mixer to mix evenly, and then add them to the granulator; if the binder is epoxy resin, it also includes putting the curing agent into the mixer to mix , and a mixture of epoxy resin and diluent liquid;

[0026] (2) the binder is sprayed into the granulator for granulation, and the inorganic non-metallic powder is added in sections during the granulation process to obtain raw meal particles;

[0027] (3) curing the raw meal particles at 80-160° C. for 1-6 hours, cooling and sieving to obtain a proppant.

[0028] Preferably, the granulator is a disc granulator or a pan granulator. The rotating speed of the granulator is 15-50r / min.

[0029] Specifically, in step (2), the inorganic non-metallic powder is added twice. The first addition of inorganic n...

Embodiment 1

[0033] A preparation method of an ultra-low density synthetic ceramsite proppant, comprising the following steps:

[0034] (1) 190g 128 epoxy resin, 70g AGE epoxy resin reactive diluent are mixed evenly for subsequent use, and 1700g quartz powder, 50g floating beads and 65g diaminodiphenylmethane are mixed and added to the disc granulator;

[0035] (2) Spray the mixed solution of epoxy resin and diluent into the granulator for granulation, add 300g of quartz powder 60min after the mixed solution is added, add 300g of quartz powder after the granulator continues to run for 60min, and continue to run for 60min to obtain raw pellets;

[0036] (3) Curing the raw meal particles at 160° C. for 4 hours, cooling and sieving to obtain a proppant with a particle size of 425-850 μm, and the yield is 90%.

[0037] The proppant obtained in this example was tested according to SY / T 5108-2014 "Proppant Performance Test Method for Hydraulic Fracturing and Gravel Packing Operations", and the ...

Embodiment 2

[0039] A preparation method of an ultra-low density synthetic ceramsite proppant, comprising the following steps:

[0040] (1) 200g 128 epoxy resin, 70g 692 epoxy resin reactive diluent are mixed evenly for standby use, and 1700g fly ash, 100g hollow glass microbeads and 65g diaminodiphenylmethane are mixed and added to the round pot granulator middle;

[0041] (2) Spray the mixed solution of epoxy resin and diluent into the granulator for granulation, add 300g of fly ash 60min after the mixed solution is added, and then add 300g of fly ash after the granulator continues to run for 120min, and continue to run for 90min , to obtain raw meal particles;

[0042](3) Curing the raw meal particles at 80° C. for 6 hours, cooling and sieving to obtain a proppant with a particle size of 425-850 μm, and the yield is 88.5%.

[0043] The proppant obtained in this example is tested according to SY / T 5108-2014 "Proppant Performance Test Method for Hydraulic Fracturing and Gravel Packing O...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
particle sizeaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of oil, natural gas and shale gas fracturing and exploitation, and particularly relates to an ultra-low density synthetic ceramsite proppant and a preparation method thereof. The invention adopts inorganic non-metallic powder, light material and resin binder as main raw materials, and is prepared through granulation and low-temperature curing process, and the inorganic non-metallic powder is added in stages during the granulation process. The preparation process of the invention is simple, the granulation and low-temperature curing process are adopted, the traditional sintering technology is omitted, energy consumption is reduced, energy saving and emission reduction. The prepared proppant meets the requirements of ultra-low density and has good strength at the same time, and the product has high particle sphericity and good surface finish, which can reduce the cost of oilfield exploitation.

Description

technical field [0001] The invention belongs to the technical field of oil, natural gas and shale gas fracturing and exploitation, and particularly relates to an ultra-low density synthetic ceramsite proppant and a preparation method thereof. Background technique [0002] Hydraulic fracturing is an important new technology for oil and natural gas low-permeability oil and gas wells, and proppant is the key material for fracturing construction. During deep well fracturing, the proppant is brought into and supported by the fracturing fluid in the fractures of the fracturing formation, preventing the fractures from closing and providing a conduction channel for oil and gas seepage, which can increase the formation's conductivity, improve oil and gas production and prolong Oil well life is an important factor in the application of fracturing technology. [0003] At present, the commonly used fracturing proppants are quartz sand, ceramsite, etc. The relative density of quartz sa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/12C04B26/14C09K8/80
CPCC04B26/122C04B26/14C09K8/80C04B2201/20C04B2201/50C04B2103/0068C04B14/06C04B18/082C04B24/121C04B18/08C04B14/22Y02P40/60
Inventor 王光赵凯卢勇李伟雄
Owner GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD