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Large-scale physical model of fluid displacement and saturation device and its displacement experimental system

A technology of physical model and displacement experiments, applied in the field of oil and gas field experiments, can solve the problems of low saturation of large-scale physical models, and achieve the effect of ensuring true reflection and good sealing.

Active Publication Date: 2016-05-11
PETROCHINA CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problem of low saturation of the existing large-scale physical model, the present invention provides a large-scale physical model fluid displacement saturation device and its displacement experiment system

Method used

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  • Large-scale physical model of fluid displacement and saturation device and its displacement experimental system
  • Large-scale physical model of fluid displacement and saturation device and its displacement experimental system
  • Large-scale physical model of fluid displacement and saturation device and its displacement experimental system

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Embodiment 1

[0034] The fluid displacement and saturation device of the large-scale physical model and its displacement experiment system described in the present invention will be described in detail below in conjunction with the accompanying drawings. A fluid displacement and saturation device for a large-scale physical model, comprising a casing 1 and a core model 2 sealed and wrapped by the casing 1, and the two sides of the core model 2 are respectively provided with drainage devices capable of injecting fluid into the core model 2 3. The displacement device 3 contains a plurality of injection ports 31 that are in contact with the surface of the core model 2, such as figure 1 as shown in figure 1 Middle arrow A indicates liquid inflow, and arrow B indicates liquid outflow.

[0035] Specifically in this embodiment, the main body 32 of the displacement device contains a closed cavity 33, and a plurality of injection ports 31 are arranged on the side wall 34 where the main body 32 of th...

Embodiment 2

[0062] In this embodiment, the displacement device 3 in the fluid displacement and saturation device of the large-scale physical model is a multi-tube type, which is mainly suitable for a heterogeneous core model.

[0063] The difference between this embodiment and Embodiment 1 is: in this embodiment, the displacement device 3 is a plurality of sealing nipples 37, and one end of each sealing nipple 37 has an injection port 31, and the sealing nipple 37 One end is connected with the rock core model 2, and the other end of the sealing nipple 37 communicates with the outside of the housing 1, such as Figure 6 , Figure 7 As shown, that is, the injection port 31 at one end of the sealing sub 37 is in contact with the core model 2, and the other end of the sealing sub 37 communicates with the pipeline 4, Figure 6 The meanings of A and B in figure 1 in the same.

[0064] In this embodiment, a displacement experimental system of a large-scale physical model includes a fluid disp...

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Abstract

The invention provides a fluid expulsion saturating device for a large-size physical model and a displacement experiment system thereof. The fluid expulsion saturating device comprises a casing (1) and a rock core model (2) sealed and wrapped by the casing (1), wherein expulsion devices (3) capable of injecting fluid into the rock core model (2) are respectively arranged on the two sides of the rock core model (2), and the expulsion devices (3) comprise a plurality of injection openings (31) in contact with the surface of the rock core model (2). Compared with a general fluid saturating method, the displacement experiment system of the large-size physical model containing the fluid expulsion saturating device uses the front edge of fluid to stably and evenly advance. Thus, the swept volume is improved, the saturating effect is obviously improved, and the simulation degree of the large-size physical model on fluid distribution under the oil deposit condition is improved.

Description

technical field [0001] The invention relates to the technical field of oil and gas field experiments, in particular to a large-scale physical model fluid displacement saturation device and a large-scale physical model displacement experiment system. Background technique [0002] The displacement experiment of large-scale physical model is an effective means to simulate the characteristics of real reservoir development, and the fluid saturation process is the first step in the experiment. Realizing the physical model to effectively simulate the initial fluid saturation state of the reservoir is the basis of the displacement experiment. [0003] At present, the fluid saturation method of the one-dimensional physical model is a mature technology, and there are clear steps in the core analysis standard, but there is no standard to follow for the two-dimensional / three-dimensional physical model. The reason is that the cross-sectional area of ​​the one-dimensional model is small, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00E21B43/16
Inventor 李实马德胜秦积舜陈兴隆韩海水张娜俞宏伟张可
Owner PETROCHINA CO LTD
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