Fine control method of physical properties of single-fracture seepage medium
A technique for medium physical properties and fine control, applied in the field of fractured medium seepage research
Active Publication Date: 2016-02-10
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology
[0006] The technical problem solved by the present invention is to provide a fine control method for the physical properties of a single fracture seepage medium to solve the problem that the physical properties of a single fracture and matrix rock block porosity and permeability are difficult to finely and quantitatively control, and to improve or overcome one of the existing technical problems. one or more defects
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[0026] The present invention proposes a method for finely controlling the physical properties of single-fracture seepage media. The method utilizes the combination of adhesive and proppant to realize fine bonding of rock blocks and precise control of fracture shaping. The amount of adhesive is used to quantitatively control the opening of artificial fractures and the intrinsic permeability of fractures. The method optionally includes quantitatively controlling the opening of the artificial crack and the intrinsic permeability of the fracture by finely and quantitatively controlling the applied pressure during bonding, wherein the amount of adhesive and the applied pressure during bonding are kept constant, by adjusting The particle size of the proppant can accurately obtain artificial fractures with specified physical properties. The set of technical methods provided by the present invention makes it possible to finely and quantitatively control various physical properties of ...
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The invention discloses a single-fissure flow medium physical property fine control method. By means of the single-fissure flow medium physical property fine control method, adhesives and propping agents are combined to achieve fine bonding of rocks and accurate setting control of fissures, and aperture of manual fissures and internal implication permeability of the fissures can be quantitatively controlled by controlling grain size of the propping agents of the fissures and amount of the fissure adhesives in a fine and quantitative mode. By means of the single-fissure flow medium physical property fine control method, the fissures are created in a rock fine bonding mode, and the adhesives and the propping agents both have the accurate fissure setting effect. By adopting a natural rock sample selection method, matrix permeability and matrix porosity can be quantitatively controlled. Regular permeability of the fissures, fissure porosity, fissure-matrix system permeability and fissure-matrix system porosity can be further quantitatively controlled by combining the two methods. The single-fissure flow medium physical property fine control method solves the problem that physical properties like porosity and permeability of single fissures and matrix racks cannot be controlled in a fine and quantitative mode and provides technology support for all research fields relative to fissure medium flow.
Description
technical field [0001] The invention belongs to a new type of physical experiment method for the study of seepage in fractured media, in particular to a method for finely controlling the physical properties of single-fracture seepage media applicable to all research fields related to fracture seepage phenomena. Background technique [0002] Fractured geological reservoirs commonly exist all over the world, and are hot issues in the following research fields: (1) water source development; (2) underground pollutant migration; (3) oil reservoir development; (4) underground thermal reservoir development and thermal Storage; (5) deep earth activities, such as earthquakes, seabed hydrothermal fluids, etc. [0003] Unlike single pore media, fractured geological reservoirs consist of matrix blocks with a general pore structure and fracture systems that separate the blocks, and are characterized by dual media. The basic characteristic of seepage in fractured porous media is that the...
Claims
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IPC IPC(8): E21B47/10E21B49/00
Inventor 顾少华刘月田骆飞飞丁祖鹏
Owner CHINA UNIV OF PETROLEUM (BEIJING)