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A multi-media chip reservoir and its manufacturing and application method

A production method and oil reservoir technology, applied in special data processing applications, earthwork drilling and production, wellbore/well components, etc., to achieve the effect of reducing experimental costs and improving recovery

Active Publication Date: 2022-01-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current design of microfluidic chips seldom considers the influence of multiple media, and the influence of different flow modes (predominant channel effect, flow direction and direction of reservoir distribution, etc.) is often less

Method used

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  • A multi-media chip reservoir and its manufacturing and application method
  • A multi-media chip reservoir and its manufacturing and application method
  • A multi-media chip reservoir and its manufacturing and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] A chip reservoir designed based on the core structure of Daqing Oilfield, the manufacturing method of which includes:

[0087] (1) Select real reservoir cores directly from the oil reservoirs of Daqing Oilfield just after the breakthrough of water flooding, and analyze the two-dimensional images of the real reservoir cores at different resolutions by scanning electron microscopy (SEM) with argon ion polishing. Preliminary scanning of the section to preliminarily determine the resolution required for core structure scanning; figure 1 The SEM image of the core obtained by scanning with a resolution of 0.8 μm / pixel can clearly distinguish the low-permeability zone and the high-permeability zone. The square zone is the low-permeability zone, and the diamond-shaped zone is the high-permeability zone; It is determined that the structure of the real reservoir core can be scanned with a resolution of 0.8 μm / pixel;

[0088] (2) using the resolution initially determined in step ...

Embodiment 2

[0097] This embodiment provides the application method of the multi-media chip reservoir prepared in embodiment 1, including:

[0098] a. Vacuumize the multi-media chip reservoir, then use model oil (such as n-decane, mineral oil, etc.) to saturate the chip reservoir; in order to saturate the entire space without residual air, you can use the first inlet and outlet 1 and the second Model oil is injected into the second inlet and outlet 2 holes, and flows out from the third inlet and outlet 3 and the fourth inlet and outlet 4;

[0099] b. By opening or closing different inlets and outlets, the fluid is injected into the multi-media chip reservoir and flows out to realize multiple flow modes of the multi-phase flow in the multi-media chip reservoir to simulate a real reservoir process of multiphase flow.

[0100] The injected fluid can be water phase, polymer phase, etc., and the injection method can be:

[0101] (1) Close the third inlet and outlet 3 and the fourth inlet and ...

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Abstract

A multi-media chip reservoir and its manufacturing and application methods. The multi-media chip reservoir includes at least two high-permeability layers and at least one low-permeability layer, and an inlet and outlet are respectively arranged on opposite sides of each of the high-permeability layers. The multi-media chip reservoir of the present application can represent the important structural characteristics of the multi-media reservoir, and it is designed with multiple inlets and outlets. By adjusting the switches of the inlets and outlets, different displacement methods can be applied, and various types of multi-media reservoirs can be simulated. The process of the displacement method makes the microfluidic chip experiment simple and flexible, the cost is low, and the result is more real and reliable.

Description

technical field [0001] This application relates to but not limited to the field of oil and gas exploration, development and utilization, especially a multi-media chip oil reservoir and its production and application method. Background technique [0002] Oil and gas resources are still the main energy sources in the world today. The exploration and development of oil and gas resources are related to my country's energy security and social development, and enhanced oil recovery is an important means to steadily increase oil and gas production. In the actual development of oil and gas resources, the invisible characteristics of multiphase flow in the reservoir greatly limit our understanding of the mechanism of enhanced oil recovery, which in turn affects the development and application of related enhanced oil recovery technologies and methods . [0003] Real reservoirs often have the characteristics of multiple media, such as matrix-fracture type, high-permeability layer-low-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00G06F30/20
CPCE21B49/00G06F30/20
Inventor 王沫然雷文海杨光
Owner TSINGHUA UNIV
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