Displacement experiment artificial core analysis preparing method based on experimental and mathematical algorithms

A technology of artificial core and mathematical algorithm, which is applied in the field of analysis and preparation of artificial core for displacement experiment based on experiment and mathematical algorithm, can solve the problems of qualitative and quantitative statistical analysis that are less studied

Active Publication Date: 2018-02-27
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

Based on mathematical algorithms, there is little research on providing q...

Method used

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  • Displacement experiment artificial core analysis preparing method based on experimental and mathematical algorithms
  • Displacement experiment artificial core analysis preparing method based on experimental and mathematical algorithms
  • Displacement experiment artificial core analysis preparing method based on experimental and mathematical algorithms

Examples

Experimental program
Comparison scheme
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Embodiment

[0150] Example: A method for analysis and preparation of artificial cores for displacement experiments based on experiments and mathematical algorithms

[0151] Add aluminum phosphate cement to refined quartz sand with different particle sizes, and make standard test cores under certain pressure and temperature conditions. By changing the ratio of refined quartz sand with different particle sizes, different parameters such as porosity, permeability, and median particle size can be obtained.

[0152] (1) Preparation of experimental materials

[0153] Phosphoric acid and aluminum hydroxide are needed to prepare aluminum phosphate cement, and the materials should be prepared according to the following requirements.

[0154] ① phosphoric acid

[0155] Industrial grade, chroma≤30, phosphoric acid content (H 3 PO 4 )≥85.0%, chloride content (Cl)≤5ppm; sulfate content≤50ppm, iron (Fe)≤20ppm, arsenic (As)≤50ppm, heavy metal (Pb)≤10ppm.

[0156] ②Aluminum hydroxide

[0157] Indus...

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Abstract

The invention discloses a displacement experiment artificial core analysis preparing method based on experimental and mathematical algorithms, and the method combines qualitation with quantitation. The method comprises the steps that physical parameters of an artificial core are used as target parameters for preparation of the artificial core; influencing factors of the physical parameters of theartificial core are determined; multiple sets of combined experiment schemes are made, and the artificial core is prepared according to all the combined experiment schemes, and the physical parametersof the artificial core are measured after preparation is completed; preparation condition parameters of all the combined experiment schemes are used as basis, and based on a gray correlation analysismethod, relevancy degrees of all the influencing factors and all the target parameters are determined; according to the relevancy degree rank of all the influencing factors and the target parameters,larger influencing factors and smaller influencing factors are determined; based on a statistic analysis result of the gray correlation analysis method and a BP neural network theory, a particle sizeratio prediction mathematical model is built; a matching prediction result is calculated through the particle size ratio prediction mathematical model and serves as a reference which provides data support for artificial core manufacturing.

Description

technical field [0001] The invention relates to an artificial rock core preparation technology, in particular to a method for analyzing and preparing an artificial rock core for a displacement experiment based on experiments and mathematical algorithms. Background technique [0002] In the process of petroleum development, in order to obtain formation physical parameters, it usually relies on coring wells to obtain cores, and the physical parameters are determined through indoor experimental analysis. However, the cost of coring is high, and the integrity of coring is restricted by process technology and formation conditions. For the qualitative research of indoor core displacement experiments in the field of petroleum development, most of them need to prepare artificial cores that meet the requirements, and do not need to spend high costs to take cores. According to the experimental research needs of specific petroleum development laboratories, the requirements for artific...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06N3/08
CPCG06N3/084G06F30/20
Inventor 秦正山罗沛周建良罗明伟何腾飞王侨吴柯欣陈春江刘先山张静雅谢晶
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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