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Method and device for determining organic matter content in shale based on petrophysical model

A petrophysical model and technology of organic matter content, applied in the field of shale reservoir exploration and development, can solve the problems of low accuracy of shale organic matter content and complicated calculation process, etc.

Active Publication Date: 2020-05-15
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for determining the organic matter content of shale based on a petrophysical model, which solves the technical problems of low precision and cumbersome calculation process in determining the organic matter content of shale in the prior art

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  • Method and device for determining organic matter content in shale based on petrophysical model
  • Method and device for determining organic matter content in shale based on petrophysical model
  • Method and device for determining organic matter content in shale based on petrophysical model

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] In an embodiment of the present invention, a method for determining the organic matter content of shale based on a petrophysical model is provided, such as figure 1 As shown, the method includes:

[0032] Step 101: set shale to include skeleton, organic matter (including layered organic matter), clay (including layered clay) and pores (containing water);

[0033] Step 102: Obtain the content, density and velocity of each component of the ...

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Abstract

The invention provides a method and device for determining shale organic matter content based on a rock physics model, and the method comprises the following steps of setting that a shale comprises askeleton, an organic matter containing layered organic matters, a clay containing layered clay, and an aqueous pore; acquiring the content, density and velocity of each component of a shale rock sample, adjusting the layered organic matters and layered clay content based on a shale rock physics model, inverting the layered organic matters and layered clay content of the shale rock sample, and theequivalent elastic modulus of the skeleton, organic matters, clay and the entire shale rock when the velocity of the shale rock physics model is close to the measured velocity, obtaining a density curve and an acoustic time difference curve of the shale rock in the actual formation, adjusting the organic matter content, clay content and porosity based on the shale rock physics model, and invertingthe shale organic matter content when the velocity of the shale rock physics model is close to the measured velocity. The solution improves the accuracy of the calculation method of shale organic matter content and reduces the cost.

Description

technical field [0001] The invention relates to the technical field of exploration and development of shale reservoirs, in particular to a method and device for determining the organic matter content of shale based on a petrophysical model. Background technique [0002] With the continuous improvement of exploration and development of shale oil and gas resources, the detection and evaluation of shale reservoirs is particularly important. Organic matter content is one of the important parameters for shale reservoir evaluation, which is of great significance to the exploration and development of shale oil and gas resources. According to previous studies, shale oil and gas reservoirs are very different from conventional oil and gas reservoirs in terms of reservoir physical properties, pore structure, and mineral composition, which leads to different logging evaluation methods for conventional oil and gas reservoirs. Then apply to shale oil and gas reservoirs. [0003] At pres...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 王兵叶正伟陈玉蓉
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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