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Oil deposit percolation experimental model for measuring multi-phase fluid saturation distribution and measuring method

An experimental model and multi-phase fluid technology, which is applied in the field of multi-phase fluid saturation distribution measurement, can solve the problems of affecting test accuracy and long test time, and achieve the effects of improving test accuracy, shortening test time, and reducing attenuation

Inactive Publication Date: 2015-05-13
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

For thick and high-pressure reservoir models, thick sealable containers are required. For example, the diameter of the reservoir model is 40cm, the external pressure needs to be 16MPa, and the wall thickness of the sealable container can reach 10cm. This will affect the test accuracy and the test will take too long. long

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  • Oil deposit percolation experimental model for measuring multi-phase fluid saturation distribution and measuring method
  • Oil deposit percolation experimental model for measuring multi-phase fluid saturation distribution and measuring method
  • Oil deposit percolation experimental model for measuring multi-phase fluid saturation distribution and measuring method

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Embodiment Construction

[0026] Such as figure 1 As shown, the present invention provides a multiphase fluid saturation distribution measurement reservoir seepage experimental model, the experimental model includes a sealable container 1 located in the center of the experimental model, a reservoir model 2 placed in the sealable container, The reservoir model has a diameter of 40cm and a height of 20cm. The airtight container is provided with a movable top cover 3 and a fixed bottom plate 4. The thickness of the top cover and bottom plate reaches 10cm. 6, the ray source and the ray detector are co-located on the mobile frame 7.

[0027] Such as figure 2 , image 3 As shown, the airtight container is a metal container, and a plurality of evenly distributed blind holes 8 are evenly arranged on the top cover and the bottom plate of the airtight container. For example, there are 118 blind holes, and the depth of the blind holes is 9cm, and the blind holes are blocked. One side of the container is the i...

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Abstract

The invention discloses an oil deposit percolation experimental model for measuring multi-phase fluid saturation distribution and a measuring method. The experimental model comprises a closable container and an oil deposit model, wherein the closable container is located at a central position of the experimental model, the oil deposit model is placed into the closable container, a movable top cover and a fixed base plate are arranged on the closable container, a radiation source is placed below the closable container, a ray detector is placed above the closable container, and the radiation source and the ray detector are commonly arranged on a moving stander. The oil deposit percolation experimental model for the measuring multi-phase fluid saturation distribution and the measuring method are applied to measuring of saturation distribution curves of big and thick models, and are a novel system and a novel method capable of measuring oil-gas-water saturation distribution of big, thick and high-pressure oil deposit models by a gamma ray attenuation method; and furthermore, the method has very high precision, the test time is greatly shortened, the time consumption is equivalent to 1 / 300 of former test time, and the measuring precision is improved.

Description

technical field [0001] The invention relates to a research method for measuring the saturation distribution of multiphase fluids in the seepage process, and belongs to the field of indoor simulation of oil and gas field development projects. Background technique [0002] In the process of oil and gas field development, it is necessary to study the law of oil, gas and water multiphase seepage. Generally, the migration of oil, gas and water and the distribution of remaining oil are simulated through the seepage test of the indoor multi-well pattern large model, so it is necessary to measure the saturation distribution curve of the multiphase fluid seepage process of the reservoir seepage experimental model. [0003] The γ-ray attenuation method is currently the most accurate method for testing the distribution of oil-gas-water saturation in a reservoir model. [0004] The measurement principle of the gamma ray attenuation method is: different fluids have different absorption ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/02
Inventor 裴柏林曾鸣陈钦雷霍鹏飞
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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