System and method for determining oil and water distribution

An oil-water and multiphase flow technology, applied in the field of reservoir exploration, can solve the problem of lack of effective detection methods for oil-water distribution

Inactive Publication Date: 2019-07-12
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
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  • Claims
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Problems solved by technology

However, there is still a lack of effective detection methods for oil-water distribution at the pore scale

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  • System and method for determining oil and water distribution
  • System and method for determining oil and water distribution
  • System and method for determining oil and water distribution

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Embodiment Construction

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0063] The terms "first", "second" and the like in the description and claims of the present invention and the above drawings, if present, are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein, for example, can be practiced in sequences other than...

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Abstract

The embodiments of the invention provide a system and method for determining oil and water distribution. The method comprises the steps that a first computed tomography (CT) image and a second CT image of a rock core are obtained, the first CT image is the CT image of the rock core, the second CT image is the CT image when a water with added indicator is injected to the rock core, according to thefirst CT image, position alignment treatment and brightness normalization treatment are conducted on the second CT image, the treated second CT image is obtained, and according to the first CT imageand the treated second CT image, the oil-water distribution image of the state of the water with saturated addition of the indicator is obtained. By adopting the system and method for determining oiland water distribution, the oil-water distribution image of the pore scale of a reservoir stratum can be determined.

Description

technical field [0001] The invention relates to the technical field of reservoir exploration, in particular to a system and method for determining oil-water distribution. Background technique [0002] At present, the targets of oil and gas exploration and development have gradually shifted from traditional medium-high permeability reservoirs to low-permeability-tight reservoirs. Pores in low-permeability-tight reservoirs are mostly in the micron-nano scale, with uneven size distribution and complex connectivity. In the exploration and development of low-permeability-tight reservoirs, it is necessary to understand the distribution of oil and water at the pore scale. [0003] In the prior art, the full-diameter or 25mm-diameter rock core oil-water displacement experiment is usually used, and the oil and water metering device at the inlet (outlet) end of the rock core holder is used to calculate the oil saturation inside the rock core, and the resistivity, NMR Signal and othe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 曾溅辉冯枭王洪玉马勇杜玉龙乔俊程张永超冯森
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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