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Preparation method for low-density high-strength petroleum fracturing propping agent

A fracturing proppant, high-strength technology, applied in chemical instruments and methods, earthwork drilling, drilling compositions, etc., can solve the problems of high density, low strength, affecting oil production, etc. Low, increased intensity effect

Inactive Publication Date: 2017-08-11
CHANGZHOU OPTICAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the traditional petroleum fracturing proppant has low strength, reduces the conductivity of the fracture, and has a high density, which is easy to accumulate at the port of the fracture and affects the oil production in the later stage. Preparation method of low-density high-strength oil fracturing proppant

Method used

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  • Preparation method for low-density high-strength petroleum fracturing propping agent

Examples

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Effect test

example 1

[0023] According to the mass ratio of 1:5, put aluminum ash and hydrochloric acid with a mass fraction of 20% into a container and stir evenly, place the container in a microwave heater to heat, heat to 85°C, keep the temperature for 2h, and then cool naturally to At room temperature, the mixture in the container is filtered, and the filtrate is collected; according to the mass ratio of 86:5, the filtrate and polyoxyethylene fatty acid ester are stirred evenly to obtain a stirred mixture; in parts by weight, 50 parts of the stirred mixture, 25 parts of acrylic acid, 7 parts of sodium persulfate, 6 parts of 2-aminoethanol and 4 parts of N,N'-methylenebisacrylamide, first put the mixture, acrylic acid, sodium persulfate and 2-aminoethanol into the reaction kettle , use nitrogen protection, set the temperature at 85°C, stir at 300r / min for 50min, then add N,N'-methylenebisacrylamide, continue to stir for 3h; Discharge, collect the discharge, stir the discharge and absolute ethano...

example 2

[0025]According to the mass ratio of 1:5, put aluminum ash and hydrochloric acid with a mass fraction of 20% into a container and stir evenly, place the container in a microwave heater for heating, heat to 80°C, keep the temperature for 1h, and then cool naturally to At room temperature, the mixture in the container is filtered, and the filtrate is collected; according to the mass ratio of 86:3, the filtrate and polyoxyethylene fatty acid ester are stirred evenly to obtain a stirred mixture; in parts by weight, 45 parts of the stirred mixture, 23 parts of acrylic acid, 4 parts of sodium persulfate, 3 parts of 2-aminoethanol and 2 parts of N,N'-methylenebisacrylamide, first put the mixture, acrylic acid, sodium persulfate and 2-aminoethanol into the reaction kettle , use nitrogen protection, set the temperature at 80°C, stir at 300r / min for 40min, then add N,N'-methylenebisacrylamide, continue to stir for 2h; Discharge, collect the discharge, stir the discharge and absolute eth...

example 3

[0027] According to the mass ratio of 1:5, put aluminum ash and hydrochloric acid with a mass fraction of 20% into a container and stir evenly, and heat the container in a microwave heater to 84°C, keep the temperature for 2h, and then cool naturally to At room temperature, the mixture in the container is filtered, and the filtrate is collected; according to the mass ratio of 87:4, the filtrate and polyoxyethylene fatty acid ester are stirred evenly to obtain a stirred mixture; in parts by weight, 47 parts of the stirred mixture, 24 parts of acrylic acid, 5 parts of sodium persulfate, 4 parts of 2-aminoethanol and 3 parts of N,N'-methylenebisacrylamide, first put the mixture, acrylic acid, sodium persulfate and 2-aminoethanol into the reaction kettle , using nitrogen protection, set the temperature at 85°C, stirred at 300r / min for 45min, then added N,N'-methylenebisacrylamide, and continued to stir for 2h; Discharge, collect the discharge, stir the discharge and absolute ethan...

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Abstract

The invention relates to a preparation method for a low-density high-strength petroleum fracturing propping agent, belonging to the technical field of oil exploitation. The preparation method comprises the following steps: mixing and heating aluminum ash and hydrochloric acid, carrying out filtering, and mixing the obtained filtrate with polyoxyethylene fatty acid ester; subjecting a mixture obtained in the previous step to a stirring reaction with acrylic acid, sodium persulfate and other substances and carrying discharging; collected a discharged substance, mixing the discharged substance with absolute ethyl alcohol and carrying out filtering; drying a filter residue obtained in the previous step so as to obtain a dried substance; subjecting the dried substance, montmorillonite, coke and other substances to mixing, grinding and sieving successively; then subjecting a substance obtained in the previous step and water to mixing and ball milling and collecting a ball milling product; and successively subjecting the ball milling product to extrusion, drying and temperature-programmed sintering. The low-density high-strength petroleum fracturing propping agent prepared in the invention has low density, wherein volume density is 1.19 to 1.32 g / cm<3>; the agent is not prone to accumulation at the port of a crack and convenient for construction; and under the condition of a closure pressure of 69 MPa, the agent has a broken rate of 3.57 to 4.12%, so the broken rate is reduced, and the flow conductivity of the crack is improved.

Description

technical field [0001] The invention relates to a preparation method of a low-density and high-strength petroleum fracturing proppant, belonging to the technical field of petroleum exploitation. Background technique [0002] Petroleum fracturing proppant is a solid particle with a certain strength used to support rock fractures during hydraulic fracturing operations. Its product performance has an important impact on supporting fractures, preventing fractures from reclosing, and improving oil and gas recovery. The proppant with excellent performance has the characteristics of not easy to break and corrosion resistance. The proppant is carried into the oil and gas reservoir by the fracturing fluid, and can support the fracture in the oil and gas reservoir for a long time to prevent the fracture from closing, so as to ensure that the fracture has good permeability after fracturing rate and diversion capacity, extending the service life of oil and gas wells. [0003] Currently...

Claims

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Application Information

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IPC IPC(8): C09K8/80
CPCC09K8/80
Inventor 郭剑薛洋宋昊
Owner CHANGZHOU OPTICAL MATERIAL
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