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A kind of nickel-iron slag-based petroleum fracturing proppant and preparation method thereof

A technology of fracturing proppant and ferronickel slag, which is applied in chemical instruments and methods, earthwork drilling, wellbore/well parts, etc., can solve the problem of high energy consumption of the process, increase particle strength, save energy consumption of the process, Effect of improving sphericity and strength

Active Publication Date: 2022-08-05
GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to provide a nickel-iron slag-based petroleum fracturing proppant to solve the problem of high energy consumption in the process of using nickel-iron slag as raw material to prepare petroleum proppants in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 2kg of 0.710-0.300mm nickel-iron slag particles, add them to the disc granulator, then spray into the thermosetting phenolic resin solution (containing 1wt% silane coupling agent KH550), and add a small amount of nickel-iron slag powder for repeated production. Granulation treatment, stop granulation when the particle size of nickel-iron slag particles reaches 0.850-0.425mm, add 500g of powder and 150g of thermosetting phenolic resin; After sintering, curing and sieving, the required proppant is obtained.

[0028] After testing, the sphericity of the proppant prepared in this example (refer to SYT-5108 2014) is 0.65, the crushing rate at 28 MPa is 7.81%, and the acid solubility is 5.15%. It shows that the proppant prepared in this example has better sphericity, higher compressive strength and acid and alkali resistance.

Embodiment 2

[0030] Weigh 2kg of 0.300-0.178mm nickel-iron slag particles, add them to the disc granulator, then spray into the thermosetting phenolic resin solution (containing 0.5wt% silane coupling agent KH550), add a small amount of nickel-iron slag powder to repeat Granulation treatment, stop granulation when the particle size reaches 0.425-0.212mm, add a total of 400g of powder and 100g of thermosetting phenolic resin; then the obtained granule body is discharged from the granulator, and subjected to sintering-free curing and sieving , that is, the required proppant is obtained.

[0031] After testing, the sphericity of the proppant prepared in this example (refer to SYT-5108 2014) is 0.68, the crushing rate at 35MPa is 8.18%, and the acid solubility is 6.21%. It shows that the proppant prepared in this example has better sphericity, higher compressive strength and acid and alkali resistance.

Embodiment 3

[0033] Weigh 2kg of 0.300-0.178mm nickel-iron slag particles, add them to the disc granulator, then spray into thermosetting phenolic resin solution (containing 2wt% silane coupling agent KH560), and add a small amount of nickel-iron slag powder for repeated production. Granulation treatment, stop granulation until the particle size reaches 0.425-0.212mm, add 500g of powder and 200g of thermosetting phenolic resin; then the obtained granule body is discharged from the granulator, and subjected to sintering-free curing and screening, That is, the required proppant is obtained.

[0034] After testing, the sphericity of the proppant prepared in this example (refer to SYT-5108 2014) is 0.70, the fracture rate at 35MPa is 7.01%, and the acid solubility is 5.34%. It shows that the proppant prepared in this example has better sphericity, higher compressive strength and acid and alkali resistance.

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Abstract

The invention belongs to the technical field of petroleum proppant, in particular to a nickel-iron slag-based petroleum fracturing proppant, and further discloses a preparation method thereof. The nickel-iron slag-based petroleum fracturing proppant of the present invention uses industrial solid waste nickel-iron slag as a raw material, and is bonded by selecting the particle part of the particle size suitable for the oil fracturing proppant produced during the crushing of the nickel-iron slag. By adding binder and nickel-iron slag powder for repeated granulation, on the one hand, the classification and utilization of nickel-iron slag is realized; moreover, the nickel-iron slag particles do not need conventional crushing treatment, which effectively saves process energy consumption. It is helpful to reduce the cost of the process; in addition, the use of nickel-iron slag powder as the filler of the binder can effectively improve the sphericity of the proppant and increase the particle strength at the same time. The particle size of the proppant prepared by the present invention The range is 0.85-0.212mm, the sphericity is greater than 0.6, and the compressive strength is 35MPa, which effectively improves the sphericity and strength of the proppant.

Description

technical field [0001] The invention belongs to the technical field of petroleum proppant, in particular to a nickel-iron slag-based petroleum fracturing proppant, and further discloses a preparation method thereof. Background technique [0002] Oil fracturing technology plays a very important role in the oil extraction process. However, due to the high viscosity of crude oil in oil fields, low porosity of rock formations, and poor connectivity of voids, it brings great difficulties to oil production. In order to improve crude oil yield and oil recovery rate, petroleum proppants are commonly used to improve formation voids and void connectivity. Petroleum proppant is a proppant that keeps the rock fissures deep in the formation in a cracked state. It has a certain roundness and sphericity, and the particle size can be selected. During the use process, the proppant is mixed into the fracturing fluid and injected by high pressure. Support rock formations in deep rock fracture...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/80
CPCC09K8/80
Inventor 王光张宏生窦明岳
Owner GUANGDONG TSINGDA TONGKE ENVIRONMENTAL PROTECTION TECH CO LTD
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