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Capillary difference gravity differentiation simulation experiment device and method in water flooding process

A simulation experiment device, gravity differentiation technology, applied in earthwork drilling, wellbore/well components, construction, etc., to achieve the effect of wide application range, convenient installation and layout, convenient disassembly and assembly

Active Publication Date: 2022-02-11
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In summary, there is still a lack of simulation experimental devices that use a series of capillary bundles to study capillary differential gravity differentiation during water flooding, especially those with reasonable design, low cost, strong visualization, and multiple functions (interpretation of different geological characteristics, the influence of injected fluid properties on capillary gravity differentiation). Effect of capillary difference gravity differentiation simulation experiment device and its effective experimental method in water flooding process

Method used

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  • Capillary difference gravity differentiation simulation experiment device and method in water flooding process
  • Capillary difference gravity differentiation simulation experiment device and method in water flooding process
  • Capillary difference gravity differentiation simulation experiment device and method in water flooding process

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Embodiment 1

[0053] like Figures 1 to 5 As shown, this embodiment provides a capillary differential gravity differentiation simulation experiment device in the water flooding process, including a visual simulation container shell 4, a capillary bundle 44 at the injection end, a middle capillary bundle 45, a capillary bundle 46 at the production end, and an injection simulation well 42 , production simulation well 47, sealing layer 41, saturated artificial core 43, visual window 5, sealing top cover 3, sealing bottom cover 6, water injection pipeline 2 and injection control valve 1, production pipeline 8 and production control valve 7, wherein, the visible window 5 is installed on both sides of the shell 4 of the visualization simulation container, the injection end capillary bundle 44, the middle capillary bundle 45, the production end capillary bundle 46, the injection simulation well 42, and the production simulation well 47 , sealing layer 41, saturated artificial rock core 43 are insi...

Embodiment 2

[0058] like Image 6 As shown, this embodiment provides an experimental method using the capillary differential gravity differentiation simulation experiment device in the water flooding process in Embodiment 1, including the following steps:

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Abstract

The invention discloses a capillary difference gravity differentiation simulation experiment device and method in the water flooding process. The experimental device includes a visual simulation container shell, a visual window is arranged on the visual simulation container shell, a sealing top cover is arranged on the top of the visual simulation container shell, and a visual simulation container shell The bottom is provided with a sealed bottom cover; the sealed top cover is provided with a water injection pipeline and a production pipeline; a saturated artificial core is provided inside the shell of the visual simulation container. The invention is reasonable in design, easy to use and operate, perfect in function and good in simulation effect, and can realize the simulation of differential gravity differentiation phenomenon occurring in capillary tubes of different positions and diameters in the water flooding process, and obtain the characteristics of different injected fluids and different formation fluids in a visualized manner. Viscosity, interlayer shielding, capillary differential gravity differentiation degree and remaining oil enrichment position under fracture development, analyze the critical situation of annulus oil-water displacement and uniform displacement rising phenomenon in capillaries of different scales.

Description

technical field [0001] The invention relates to the technical field of gravity differentiation simulation experiments in petroleum and natural gas engineering, in particular to a capillary difference gravity differentiation simulation experiment device and method in a water flooding process. Background technique [0002] During the water injection development of oil and gas fields, as the injected water gradually flows into the formation, gravity differentiation will occur in the vertical direction of the formation, especially for gravity flooding oil and gas reservoirs. Controlling the degree of gravitational differentiation of injected fluid in the vertical direction of the reservoir, and finding out the remaining oil enrichment area and enrichment degree at the top under different injection fluid characteristics and formation characteristics, will help to propose targeted remaining oil excavation technical measures to improve The production degree of the oil and gas reser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/002E21B43/20
CPCE21B43/20
Inventor 杨满平郑黎明朱铁汉韩鑫
Owner YANSHAN UNIV