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Quantitative evaluation method and device for pore space characteristics of different causes

A technology of spatial characteristics and pores, which is applied in the field of quantitative evaluation of spatial characteristics of pores of different origins, and can solve the problems of lack of testing equipment and methods

Active Publication Date: 2022-05-13
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, so far, there is a lack of suitable testing equipment and methods for the quantitative characterization of pore space characteristics of different origins in shale reservoirs, including porosity and pore connectivity.

Method used

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  • Quantitative evaluation method and device for pore space characteristics of different causes
  • Quantitative evaluation method and device for pore space characteristics of different causes
  • Quantitative evaluation method and device for pore space characteristics of different causes

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Embodiment 1

[0085] In this embodiment, a quantitative evaluation device and method for pore space characteristics of different origins are provided, and specifically relates to a quantitative characterization scheme for shale organic and inorganic pore spaces. Including: total porosity detection area, different genetic pores detection area and data processing area. In the process of spontaneous imbibition, since the capillary force is the main driving force, the filling behavior of the pores by the wetting phase fluid is controlled by the connectivity and wettability of the pores. The resonance detection technology can obtain the pore size distribution and spatial distribution characteristics of different pore spaces, making it possible to quantitatively study the pore spaces of different origins in shale.

[0086] Such as figure 2As shown, the device specifically includes: gas cylinder A, vacuum pump, standard chamber, sample chambers A and B, pressure gauge, solution chambers A and B ...

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Abstract

The invention discloses a quantitative evaluation method and device for pore space characteristics of different causes, and the method comprises the steps: obtaining shale samples filled with different causes of pore differences by comparing the relation between the suction amount and time when shale spontaneously imbibites oil and water in a vacuumizing state and the difference of the final suction amount; after shale samples filled with different causes of pores differently are obtained, pore size distribution and three-dimensional distribution characteristic quantitative characterization of the pores with different causes are obtained by combining a nuclear magnetic resonance detection technology. According to the scheme, quantitative characterization of pore spaces of different causes of shale is realized.

Description

technical field [0001] The present invention relates to a method and a device, in particular to a quantitative evaluation method and device for the spatial characteristics of pores of different origins. Background technique [0002] The successful development of shale oil and gas resources proves the possibility of shale oil as an important successor to conventional oil and gas resources. As a typical "self-generation and self-storage" resource, shale oil's own storage and seepage capacity are important conditions for evaluating whether it can be used as an effective storage space, while porosity and pore connectivity are factors that affect shale storage capacity. parameters. According to the origin, the pores in shale can be divided into organic pores and inorganic pores. Organic pores are pores related to the development characteristics of organic matter controlled by factors such as organic matter content, type, and maturity. Inorganic pores are controlled by shale ino...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/08G01N15/08
CPCG01N24/081G01N15/088Y02A90/30
Inventor 白龙辉柳波付晓飞王博洋王柳田善思
Owner NORTHEAST GASOLINEEUM UNIV