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Low-density and moderate-strength oil fracturing propping agent and preparing method thereof

A fracturing proppant, low-density technology, applied in chemical instruments and methods, earthwork drilling, and fluid production, can solve problems such as low production efficiency in shallow low-permeability oil and gas fields, achieve good appearance and prevent powder removal , The effect of high crush resistance

Active Publication Date: 2015-04-01
LUOYANG INST OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of low production efficiency in the production of medium-shallow low-permeability oil and gas fields, the present invention provides a low-density, medium-strength petroleum fracturing proppant and its preparation method, using abandoned molybdenum ore tailings to produce fracturing proppant, not only Realize the reuse of waste slag, and the fracturing proppant made has the characteristics of low density and high strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A low-density medium-strength petroleum fracturing proppant, made of powder and 4% of its weight silica sol, according to the weight ratio, the powder consists of 85 parts of raw bauxite, 5 parts of molybdenum ore tailings, 2 parts It is made by mixing high-quality bentonite and 2 parts of composite additives, wherein the particle size of raw bauxite and molybdenum ore tailings are both less than 0.044mm, and the fineness of bentonite is less than 0.074mm;

[0029] According to the weight ratio, the composite additive is composed of 1 part of manganese oxide powder and 1 part of ferronickel slag powder, and the particle size of both the manganese oxide powder and the ferronickel slag powder is less than 0.074mm.

[0030] The preparation method of the above-mentioned low-density and medium-strength petroleum fracturing proppant comprises the following steps:

[0031] 1) Weigh each material according to the above requirements and crush and grind them to the corresponding ...

Embodiment 2

[0037] A low-density, medium-strength petroleum fracturing proppant, made of powder and 4% of its weight silica sol, according to the weight ratio, the powder consists of 90 parts of raw bauxite, 8 parts of molybdenum ore tailings, 3 parts Bentonite and 5 parts of composite additives are mixed, wherein the particle size of raw bauxite and molybdenum ore tailings are both less than 0.044mm, and the fineness of bentonite is less than 0.074mm;

[0038] According to the weight ratio, the composite additive is composed of 3 parts of manganese oxide powder and 2 parts of ferronickel slag powder, and the particle size of both the manganese oxide powder and the ferronickel slag powder is less than 0.074mm.

[0039] The preparation method of the above-mentioned low-density and medium-strength petroleum fracturing proppant comprises the following steps:

[0040] 1) Weigh each material according to the above requirements and crush and grind them to the corresponding particle size, then s...

Embodiment 3

[0046] A low-density medium-strength petroleum fracturing proppant, made of powder and 4% of its weight silica sol, according to the weight ratio, the powder consists of 87.5 parts of raw bauxite, 6.5 parts of molybdenum ore tailings, 2.5 parts Bentonite and 3.5 parts of composite additives are mixed, wherein the particle size of raw bauxite and molybdenum ore tailings are both less than 0.044mm, and the fineness of bentonite is less than 0.074mm;

[0047] According to the weight ratio, the composite additive is composed of 2 parts of manganese oxide powder and 1.5 parts of ferronickel slag powder, and the particle size of both the manganese oxide powder and the ferronickel slag powder is less than 0.074mm.

[0048] The preparation method of the above-mentioned low-density and medium-strength petroleum fracturing proppant comprises the following steps:

[0049] 1) Weigh each material according to the above requirements and crush and grind them to the corresponding particle siz...

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Abstract

The invention relates to a low-density and moderate-strength oil fracturing propping agent and a preparing method thereof, and belongs to the technical field of oil-gas well fracturing in oil production. The low-density and moderate-strength oil fracturing propping agent is made of powder and a silica solution accounting for four percent of the weight of the oil fracturing propping agent. The powder is formed by mixing, by weight, 85-90 parts of raw bauxite, 5-8 parts of molybdenum ore gangue, 2-3 parts of bentonite and 2-5 parts of composite additive. The molybdenum ore gangue and the composite additive composed of manganese oxide powder and ferronickel slag powder are added, good balance is obtained between obvious propping agent density reduction and certain strength keeping, the developed oil propping agent has good comprehensive performance, it is ensured that the propping agent has considerable strength, the firing temperature of the propping agent is reduced, the purposes of saving energy and reducing consumption are achieved, the wasted mineral is fully utilized, and waste resources are repeatedly utilized.

Description

technical field [0001] The invention relates to a solid proppant for oil and gas well fracturing technology, in particular to a low-density and medium-strength petroleum fracturing proppant and a preparation method thereof. Background technique [0002] Currently, the so-called hydraulic fracturing technology is widely used in deep well exploitation of oil and gas. This technology uses a high-pressure pump set on the ground to continuously inject high-viscosity fracturing fluid into the oil well through the wellbore, so that the lower part of the oil well forms a high pressure. With the continuous injection of fracturing fluid, the pressure also continues to rise. When the tensile strength and formation stress of the formation rock near the wellbore wall are less than the pressure formed by the fracturing fluid, fractures will occur in the formation near the bottom of the well. When the fracturing fluid carrying proppant continues to be injected, the fractures in the ro...

Claims

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Application Information

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IPC IPC(8): C09K8/80
CPCC09K8/80
Inventor 廖桂华张国强李忠孝王黎张国弘
Owner LUOYANG INST OF SCI & TECH
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