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Method of quantitatively evaluating mobile fluid of ultra-deep reservoir stratum and application thereof

A quantitative evaluation, reservoir technology, applied in measurement devices, analysis by NMR, analysis of suspensions and porous materials, etc.

Inactive Publication Date: 2017-03-08
XI'AN PETROLEUM UNIVERSITY
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Problems solved by technology

[0004] Aiming at the defect that there is no special test method for movable fluid in ultra-deep reservoirs at present, and the error of conventional test methods is relatively large, the present invention provides a method dedicated to quantitatively evaluating movable fluid in ultra-deep reservoirs

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  • Method of quantitatively evaluating mobile fluid of ultra-deep reservoir stratum and application thereof
  • Method of quantitatively evaluating mobile fluid of ultra-deep reservoir stratum and application thereof
  • Method of quantitatively evaluating mobile fluid of ultra-deep reservoir stratum and application thereof

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the drawings, but the protection scope of the present invention is not limited to this.

[0025] The method of the present invention is used to sample and test an oil field ultra-deep reservoir. There are multiple samples. In this embodiment, the number of samples is 40. The specific steps are as follows: figure 1 Shown:

[0026] Step 1. Drill a standard rock sample with a diameter of 2.5cm, wash the oil and dry it according to the existing conventional rock sample processing method;

[0027] Step 2. Use the gas measurement method to measure the permeability of the standard rock sample. The gas measurement method is to use nitrogen to measure the permeability under 4 different pressures, and take the average value as the gas permeability of the core, and linear regression to obtain the Kelvin permeability ;

[0028] Step 3. Vacuum the rock sample to saturate the simulated formation water to reach the sali...

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Abstract

The invention discloses a method of quantitatively evaluating mobile fluid of an ultra-deep reservoir stratum and application thereof, and relates to the field of reservoir stratum evaluation. To solve the problems that no special testing method exists for the mobile fluid of the ultra-deep reservoir stratum, and a conventional testing method has large errors, the method of quantitatively evaluating the mobile fluid of the ultra-deep reservoir stratum is provided. The method of quantitatively evaluating the mobile fluid of the ultra-deep reservoir stratum includes the steps that a sample is processed to keep the temperature and pressure conditions of the sample in the sampling stratum, the T2 spectrum is obtained, and the relation map between core mobile fluid saturation and related core parameters and physical properties is obtained. Porosity of the mobile fluid can be obtained and synthesizes reservoir stratum reserving capacity and fluid deposit characteristic information, the mobile fluid of the ultra-deep reservoir stratum can be quantitatively evaluated, and fluid-solid coupling characteristics of the ultra-deep reservoir stratum can be reflected more accurately.

Description

Technical field [0001] The invention relates to the field of reservoir evaluation, in particular to a method for quantitatively evaluating movable fluid in ultra-deep reservoirs. Background technique [0002] Ultra-deep reservoirs are located in deep high temperature and high pressure conditions, and the underground geological environment is complex, which is different from conventional reservoirs. In order to improve the development effect of this type of reservoir, it is necessary to study the occurrence and distribution of movable fluid in the reservoir. Existing conventional methods for testing movable fluid saturation are based on the correlation between reservoir rock pore size and hydrogen nucleus relaxation time. This positive correlation is also the theoretical basis for using nuclear magnetic resonance T2 spectrum to study rock microscopic pore structure. NMR T 2 The relaxation time of the spectrum hydrogen nucleus can reflect the distribution of the pore radius of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08G01N24/08
CPCG01N15/088G01N24/081
Inventor 王瑞飞曹原国殿斌苏琛
Owner XI'AN PETROLEUM UNIVERSITY
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