Functional proppant for permeation enhancement of low-permeability polluted site and preparation method thereof
A low-permeability, proppant technology, applied in chemical instruments and methods, applications, ceramic products, etc., can solve the problems of proppant economy and difficult application of formation adaptability.
Active Publication Date: 2020-10-09
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology
[0005] This application provides a functional proppant for increasing permeability of low-permeability polluted sites and its preparation method, which solves the technical problems that the existing proppant is difficult to apply in terms of economy and formation adaptability, and realizes the preparation of functional proppant , in order to realize the needs of self-adaptive low-permeability polluted ground rock and soil property fracturing and seepage enhancement, and to monitor the changes of formation magnetism and electrical conductivity uphole or downhole, comprehensively invert formation information, and dynamically evaluate the effect of permeability enhancement, fracture expansion degree and support Agent flow paths provide the basis for characterization
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[0050] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
[0051] This application provides a functional proppant for increasing permeability of low-permeability polluted sites and its preparation method. Specifically, solid waste is used as raw material to prepare aggregate, and nano-magnetic materials are used to generate a magnetic field. After coating, the conductive powder material provides a conductive path. , ...
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Abstract
The invention relates to a functional proppant for permeation enhancement of a low-permeability polluted site and a preparation method thereof. The preparation method comprises the following steps of:preparing a solid waste-based porous proppant aggregate; magnetizing the proppant aggregate to obtain a magnetic aggregate; and coating the magnetic aggregate with a film for electric conduction to obtain a finished product of the functional proppant for permeation enhancement of the low-permeability polluted site. The functional proppant for permeation enhancement of the low-permeability polluted site. According to the preparation method, the obtained functional proppant for permeation enhancement of a low-permeability polluted site can meet the fracturing permeation enhancement requirementof low-permeability polluted stratum rock and soil properties in a self-adaptive manner; and a characterization basis is provided for dynamically evaluating the permeation enhancement effect, the fracture expansion degree and the proppant flow path by monitoring stratum magnetism and conductivity changes and comprehensively inverting stratum information above or below a well.
Description
technical field [0001] The invention relates to the technical field of remediation of contaminated sites, in particular to a functional proppant for low-permeability polluted sites and a preparation method thereof. Background technique [0002] With the development of industrialization, the pollution of soil and groundwater is becoming more and more serious, especially the discharge of heavy metals and organic pollutants in the process of industrial production, so that many toxic and harmful substances enter the soil and groundwater, posing a serious threat to people's health and the living environment. . In-situ (In-Situ) remediation of contaminated sites is considered to be one of the effective methods for stabilizing heavy metals and removing volatile / semi-volatile organic pollutants from soil and groundwater. By injecting redox agents into the soil and fully exposing the agents to the surface of soil particles to achieve the purpose of effectively stabilizing pollutants...
Claims
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IPC IPC(8): C04B33/132C04B33/13C04B33/135C04B33/138C04B38/06C04B41/89C09K8/80
CPCC04B38/009C04B33/1322C04B33/13C04B33/1352C04B33/138C04B33/1324C04B33/1355C04B33/1328C04B41/89C04B41/52C09K8/805C04B2235/36C04B2235/658C04B2235/6562C04B2235/6567C04B38/0675C04B38/0665C04B41/5036C04B41/5001C04B41/5041C04B41/5027C04B41/4539C04B41/4584C04B41/4853C04B41/4884C04B41/4826C04B41/483C04B41/51C04B41/50C04B41/48C04B41/4596C04B41/4857C04B41/46Y02P40/60
Inventor薛强陈新李江山王琳玲万勇马梓涵
OwnerINST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI