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A light-weight high-strength fracturing proppant and its preparation method

A fracturing proppant, high-strength technology, applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., can solve the problems of ceramsite proppant such as high apparent density, short support zone, and poor flow diversion. Achieve the effects of low breakage rate, increase strength and maintain conductivity

Active Publication Date: 2022-03-01
西安摩根恩能能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a light-weight and high-strength fracturing proppant, which solves the problem that the ceramsite proppant in the prior art has a large apparent density, which makes it easy to produce short support bands in application, which accumulate at the ports of cracks. Extremely unfavorable problems for diversion

Method used

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  • A light-weight high-strength fracturing proppant and its preparation method
  • A light-weight high-strength fracturing proppant and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A lightweight high-strength fracturing proppant, made of the following components by weight: 60 parts of low-grade bauxite, 8 parts of clay, 8 parts of steel slag, K 2 TiF 6 1.5 parts, Sb 2 o 3 0.5 parts, 1.5 parts of silane coupling agent, 4 parts of soluble polyimide, 1 part of sodium alkylbenzenesulfonate, among them, Al in low-grade bauxite 2 o 3 The content is 50%;

[0028] The specific preparation method is as follows:

[0029] S1, weigh 60 parts of low-grade bauxite, 8 parts of clay, 8 parts of steel slag, K 2 TiF 6 1.5 parts, Sb 2 o 3 0.5 parts, 1.5 parts of silane coupling agent, 4 parts of soluble polyimide, 1 part of sodium alkylbenzene sulfonate;

[0030] S2, mixing the low-grade bauxite, clay, and steel slag weighed in S1 and crushing through a 400-mesh sieve to obtain a mixture A;

[0031] S3, mix the silane coupling agent weighed in S1 with DMF according to a mass ratio of 1:5 to obtain a coupling agent solution, add the soluble polyimide we...

Embodiment 2

[0036] A lightweight high-strength fracturing proppant, made of the following components in parts by weight: 50 parts of low-grade bauxite, 10 parts of clay, 5 parts of steel slag, K 2 TiF 6 1 part, Sb 2 o 3 1 part, 2 parts of silane coupling agent, 3 parts of soluble polyimide, 0.5 part of sodium alkylbenzene sulfonate, among them, Al in low-grade bauxite 2 o 3 The content is 55%;

[0037] The specific preparation method is as follows:

[0038] S1, take by weight 50 parts of low-grade bauxite, 10 parts of clay, 5 parts of steel slag, K 2 TiF 6 1 part, Sb 2 o 3 1 part, 2 parts of silane coupling agent, 3 parts of soluble polyimide, 0.5 part of sodium alkylbenzene sulfonate;

[0039] S2, mixing the low-grade bauxite, clay, and steel slag weighed in S1 and crushing through a 400-mesh sieve to obtain a mixture A;

[0040] S3, mix the silane coupling agent weighed in S1 with DMF according to a mass ratio of 1:5 to obtain a coupling agent solution, add the soluble pol...

Embodiment 3

[0045] A lightweight high-strength fracturing proppant, made of the following components in parts by weight: 80 parts of low-grade bauxite, 5 parts of clay, 10 parts of steel slag, K 2 TiF 6 2 parts, Sb 2 o 3 0.5 parts, 1 part of silane coupling agent, 5 parts of soluble polyimide, 0.5 parts of sodium alkylbenzene sulfonate, among them, Al in low-grade bauxite 2 o 3 The content is 50%;

[0046] The specific preparation method is as follows:

[0047] S1, take by weight 80 parts of low-grade bauxite, 5 parts of clay, 10 parts of steel slag, K 2 TiF 6 2 parts, Sb 2 o 3 0.5 parts, 1 part of silane coupling agent, 5 parts of soluble polyimide, 0.5 parts of sodium alkylbenzene sulfonate;

[0048] S2, mixing the low-grade bauxite, clay, and steel slag weighed in S1 and crushing through a 400-mesh sieve to obtain a mixture A;

[0049] S3, mix the silane coupling agent weighed in S1 with DMF according to a mass ratio of 1:5 to obtain a coupling agent solution, add the sol...

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Abstract

The invention discloses a light-weight high-strength fracturing proppant, which is made of the following components in parts by weight: 50-80 parts of low-grade bauxite, 5-10 parts of clay, 5-10 parts of steel slag, K 2 TiF 6 1‑2 servings, Sb 2 o 3 0.5-1 part, 1-2 parts of silane coupling agent, 3-5 parts of soluble polyimide, 0.5-1 part of sodium alkylbenzene sulfonate. In addition, the invention also provides a preparation method of a lightweight high-strength fracturing proppant. The light-weight high-strength fracturing proppant prepared by the invention is light in weight, high in strength, low in fracture rate during use, can effectively maintain the flow conductivity of fracturing fluid, is suitable for deep well fracturing, and has broad market prospects.

Description

technical field [0001] The invention belongs to the field of oilfield chemical technology, and in particular relates to a light-weight high-strength fracturing proppant and a preparation method thereof. Background technique [0002] Fracturing proppants are solid particles that fill and support hydraulic fracturing fractures so that they will not reclose and have a certain degree of roundness and sphericity. In the process of hydraulic fracturing, high-viscosity fracturing fluid exceeding its absorption capacity is continuously injected into the oil layer through the wellbore by using fracturing equipment such as high-pressure pumps on the ground, so that a higher pressure is formed on the oil layer. With the continuous injection of cracking fluid, the pressure is also rising. When the pressure is higher than the formation pressure near the well wall and the expansion strength of the formation rock, the oil layer will be fractured to form fractures of different sizes and len...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/80
CPCC04B35/10C04B35/62204C04B35/63468C04B35/632C04B35/622C09K8/80C04B2235/349C04B2235/445C04B2235/3294C04B2235/658
Inventor 包劲青张博张瑞华
Owner 西安摩根恩能能源科技有限公司