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Crude oil saturating device for compact inhomogenous reservoir models

A technology for heterogeneous reservoirs and crude oil installations, applied in wellbore/well parts, earthwork drilling and production, etc., can solve problems such as no crude oil entering low-permeability tight layers, high water pressure difference in oil flooding, crude oil breakthrough, etc., to achieve The structure is simple, the pressure difference is reduced, and the effect of not being saturated can be avoided

Pending Publication Date: 2017-08-29
CHINA UNIV OF PETROLEUM (BEIJING) +1
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Problems solved by technology

[0005] The object of the present invention is to provide a kind of dense heterogeneous reservoir model saturated crude oil device, overcome the crude oil breakthrough of the high permeability layer existing in the process of saturated crude oil in the prior art, no crude oil enters the low permeability tight layer and the oil flooding water pressure difference The problem of being too high to be saturated, to realize the full saturation of the heterogeneous reservoir model of low permeability tight layer, to achieve the purpose of simulating the actual reservoir

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  • Crude oil saturating device for compact inhomogenous reservoir models
  • Crude oil saturating device for compact inhomogenous reservoir models
  • Crude oil saturating device for compact inhomogenous reservoir models

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Embodiment Construction

[0050] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0051] Such as Figure 1 to Figure 3As shown, the present invention provides a tight heterogeneous reservoir model saturated crude oil device 100, including a pressure chamber 1 arranged horizontally that can be sealed, and a plurality of low-permeability reservoirs arranged in sequence up and down in the pressure chamber 1 Or a tight heterogeneous reservoir model 9, the pressure chamber 1 is horizontally provided with a composite rubber cartridge structure 2 capable of sealing and covering the low-permeability or dense heterogeneous reservoir model 9, in this embodiment, the low-permeability or dense The heterogeneous reservoir model 9 is a cuboid structure, that is, its cross-section is rectangular or square, and the shape of t...

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Abstract

The invention discloses a crude oil saturating device for compact and inhomogenous reservoir models. The crude oil saturating device comprises a pressure cabin. The low-permeability or compact inhomogenous reservoir models are arranged in the pressure cabin. A composite rubber cylinder structure capable of covering the low-permeability or compact inhomogenous reservoir models in a sealing mode is horizontally arranged in the pressure cabin. An axial compression structure is arranged in the pressure cabin. A saturating liquid inlet connector is arranged on the top of the side wall of the pressure cabin in sealed and penetrating modes. A saturated liquid outlet connector is arranged at the bottom of the side wall of the pressure cabin in sealed and penetrating modes. A peripheral pressure structure is further arranged on the pressure cabin in a communicating mode. According to the device, the problems that crude oil onrush occurs at a high-permeability layer, no crude oil enters a low-permeability compact layer, and saturating cannot be conducted due to the overlarge pressure difference of oil displacing water in the crude oil saturating process in the prior art are overcome, full saturating of the inhomogenous reservoir models at the low-permeability compact layer is achieved, and the purpose of simulating an actual reservoir is achieved.

Description

technical field [0001] The invention relates to the technical field of experimental devices for evaluating indoor simulated reservoirs of oil and natural gas, and is mainly suitable for saturation of vertical heterogeneous reservoir models with different layers of permeability in the process of oil and natural gas development and enhanced recovery A device for crude oil processing, especially a saturated crude oil device for a tight heterogeneous reservoir model. Background technique [0002] In the field of oil and gas development, it is necessary to conduct research and technical feasibility evaluation on oil and gas development process and enhanced recovery technology. The research methods currently used are mainly indoor physical experiment simulation methods. [0003] In the research related to oil and gas production, the commonly used method of saturated crude oil is to inject crude oil from one end of the core. When this method is used in low-permeability or tight h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 张立娟孔彬董杰岳湘安张俊彬田文浩邹积瑞江建林
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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