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Measuring method for degree of saturation containing oil

A measurement method and saturation technology, which can be used in measurement devices, geophysical measurements, radio wave measurement systems, etc., and can solve problems such as saturation without measurement points.

Inactive Publication Date: 2005-05-04
OIL RECOVERY RATIO INST CHINA OIL EXPLORATION &DEV ACAD
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Problems solved by technology

[0002] When experimentally studying oil-water two-phase flow in porous media such as natural cores, sand-packed pipes, and 3D models, how to measure the oil-water content at each point in the medium, that is, the dynamic change of oil saturation, is a worldwide problem. The main measurement methods are: X-ray CT method, X-ray absorption method, nuclear magnetic resonance method, microwave absorption method and gamma ray attenuation saturation detection method. degree method

Method used

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  • Measuring method for degree of saturation containing oil
  • Measuring method for degree of saturation containing oil
  • Measuring method for degree of saturation containing oil

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Embodiment Construction

[0009] attached figure 2 The ground end 2 of the medium insulation probe 1 has three contacts, and the lower outer circumference of the probe 1 is provided with three silver electrodes, which are A electrode 3, M electrode 4, and N electrode 5 from top to bottom. The wires in the probe 1 are respectively connected to the three contacts of the ground terminal. figure 1 It reflects the setting positions of the power supply electrode and the measurement electrode, wherein the B power supply 6 is connected to the A electrode 3 of the probe 1 , and the B electrode 4 and the C electrode 5 are connected to the voltage measuring instrument 7 .

[0010] Create multiple figure 1 The electrode system shown.

[0011] Resistivity measurement supplies low-frequency (frequency adjustable) rectangular wave alternating current to measure the potential difference ΔU between M and N MN , and calculate the resistivity as follows:

[0012] R = K ...

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Abstract

The invention relates to a method for measuring oil saturation. The invention relates to a method for measuring a petroleum engineering experiment model. The measurement method is to establish at least one potential electrode system in the measured object. The potential electrode system includes a pair of power supply electrodes, a pair of measurement electrodes and a potential measuring instrument. The current is supplied through the power supply electrodes, and an electric field is established in the formation. The potential measuring instrument measures the potential difference of the measuring electrode. The potential electrode system is established by setting the electrode in a slender probe rod and probing into the experimental model. The experimental model is displaced and can measure the oil saturation of a certain point of the measured object in real time. degree and its dynamic changes.

Description

Technical field: [0001] The invention relates to a petroleum engineering measuring method and instrument, in particular to a measuring method for measuring oil saturation with an experimental model of oily medium in petroleum engineering. Background technique: [0002] When experimentally studying oil-water two-phase flow in porous media such as natural cores, sand-packed pipes, and 3D models, how to measure the oil-water content at each point in the medium, that is, the dynamic change of oil saturation, is a worldwide problem. The main measurement methods are: X-ray CT method, X-ray absorption method, nuclear magnetic resonance method, microwave absorption method and gamma ray attenuation saturation detection method. degree method. Invention content: [0003] The invention provides a method for measuring the saturation of a measurement point in an experimental model, which can measure the oil saturation of a certain point of a measured object and its dynamic change in re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/02G01N27/04G01N27/26G01V3/06
Inventor 王家禄沈平平
Owner OIL RECOVERY RATIO INST CHINA OIL EXPLORATION &DEV ACAD