A reservoir evaluation method and device based on digital core technology
A digital core and evaluation method technology, which is applied to measurement devices, sampling devices, suspension and porous material analysis, etc. Effect
Active Publication Date: 2021-12-17
北京润泽创新科技有限公司 +1
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Problems solved by technology
The current reservoir evaluation standard is established based on the traditional conventional experimental measurement parameters, and there is no corresponding evaluation division scheme for the parameters that can be quantitatively analyzed by digital core technology
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Embodiment 1
[0045] Embodiment 1 of the present invention provides a reservoir evaluation method based on digital core technology, and reservoir performance is determined by storage performance and seepage performance. Reservoir performance can be reflected by porosity, seepage performance can be reflected by permeability, and permeability is affected by many factors in microscopic pore throat space. The present invention starts with permeability, studies the correlation between different microscopic pore throat parameters and permeability, and determines the main control factors of seepage. The gray correlation method is used for the main control factors of seepage to analyze the influence of different factors on the permeability, and the permeability evaluation factor is established. Combined with the permeability evaluation factor and porosity, the reservoir evaluation chart is established.
[0046] like figure 1 As shown, a reservoir evaluation method based on digital core technology,...
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The invention discloses a reservoir evaluation method and device based on digital rock core technology. The method includes selecting a core sample, and performing conventional gas testing experiment analysis to obtain basic physical property data of porosity and permeability; performing CT scanning experiment analysis on the core sample to obtain pore-throat space parameters; The spatial parameters determine the main control factors of seepage in the pore throat space, calculate the weight coefficients of the main control factors of seepage, and form the weight table of the main control factors of seepage; calculate the permeability evaluation factor according to the main control factors of seepage and their corresponding weights; The permeability evaluation factor is used as a parameter to establish a digital core evaluation plate for reservoir evaluation, and the reservoir evaluation category is determined according to the calculated permeability evaluation factor. The reservoir evaluation chart established based on digital core technology can quickly evaluate the reservoir type of the sample, provide timely data support for oil field testing, improve production efficiency, and reduce exploration and development costs.
Description
technical field [0001] The invention relates to the application field of digital rock core technology, in particular to a reservoir evaluation method and device based on digital rock core technology. Background technique [0002] The microscopic pore structure characteristics of the reservoir directly determine the macroscopic reservoir porosity, permeability and reservoir performance, which is an indispensable part of reservoir evaluation. The difference in the microscopic pore throat structure of the reservoir is manifested in the change of the relationship between porosity, permeability and various pore structure parameters. [0003] In recent years, digital core technology has developed into an important part of petrophysical experiments. As a typical representative of digital core construction, CT scanning technology can detect the three-dimensional structure inside the rock without destroying the sample, and quantitatively analyze the microscopic pores of the reservoir...
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IPC IPC(8): G01N23/046G01N15/08G01N1/08
CPCG01N23/046G01N15/08G01N15/088G01N1/08
Inventor 李浩然戴慧英莫晓光陈国辉
Owner 北京润泽创新科技有限公司