Manufacturing method of low-cost sandstone artificial rock core for experimental teaching

An artificial core, low-cost technology, applied in the field of petroleum engineering, can solve the problems of large difference, limited source of raw materials, poor repeatability of core production, and achieves simple and easy operation, high repeatability and success rate, and simple and easy preparation method. effect of operation

Inactive Publication Date: 2016-07-06
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the artificial core production methods mainly include quartz sand epoxy resin cementation, quartz sand or glass ball filling, and quartz sand aluminum phosphate sintering. The model does not contain cement, and its pore size, pore structure, etc. are quite different from natural cores, and the application of these two cores is limited; the rock pore size and structural characteristics of quartz sand epoxy resin cemented cores are similar to natural cores, but The complexity of preparation and operation methods, as well as the limitation of raw material sources, make it difficult to widely popularize in indoor experiments and experimental teaching.

Method used

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  • Manufacturing method of low-cost sandstone artificial rock core for experimental teaching
  • Manufacturing method of low-cost sandstone artificial rock core for experimental teaching
  • Manufacturing method of low-cost sandstone artificial rock core for experimental teaching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0029] The sandstone artificial rock core that the present invention relates to comprises the following components, wherein each component is calculated by mass percentage,

[0030] Portland cement 57%;

[0031] Ordinary quartz sand 28%;

[0032] Distilled water: 15%;

[0033] A method for preparing a sandstone artificial core, comprising the steps of:

[0034] Quartz sand screened with a 60-mesh standard sieve is used as the rock skeleton, and it is evenly mixed with cement and distilled water;

[0035] Put the mixture into the mold, apply a pressure above 23MPa for 24 hours, so that the cement, sand, and water are fully cemented; take out the rock sample and place it in a high-temperature drying oven at 108°C for 4 to 6 hours;

[0036] Take out the dry sample and cut it into a standard test sample (Φ25×100mm);

[0037] The manufactured artificial cores were used for experimental tests of different physical properties.

Embodiment example 2

[0039] The artificial sandstone core of the present invention comprises the following components, wherein each component is calculated by mass percentage,

[0040] Portland cement 57%;

[0041] Ordinary quartz sand 28%;

[0042] Distilled water: 15%;

[0043] A method for preparing a sandstone artificial core, comprising the steps of:

[0044] Quartz sand screened with a 40-mesh standard sieve is used as the rock skeleton, and it is evenly mixed with cement and distilled water;

[0045] Put the mixture into the mold, apply a pressure above 23MPa for 24 hours, so that the cement, sand, and water are fully cemented; take out the rock sample and place it in a high-temperature drying oven at 108°C for 4 to 6 hours;

[0046] Take out the dry sample and cut it into a standard test sample (Φ25×100mm);

[0047] The manufactured artificial cores were used for experimental tests of different physical properties.

Embodiment example 3

[0049] The artificial sandstone core of the present invention comprises the following components, wherein each component is calculated by mass percentage,

[0050] Portland cement 57%;

[0051] Ordinary quartz sand 28%;

[0052] Distilled water: 15%;

[0053] A method for preparing a sandstone artificial core, comprising the steps of:

[0054] Quartz sand screened with a 20-mesh standard sieve is used as the rock skeleton, and it is evenly mixed with cement and distilled water;

[0055] Put the mixture into the mold, apply a pressure above 23MPa for 24 hours, so that the cement, sand, and water are fully cemented; take out the rock sample and place it in a high-temperature drying oven at 108°C for 4 to 6 hours;

[0056] Take out the dry sample and cut it into a standard test sample (Φ25×100mm);

[0057] The manufactured artificial cores were used for experimental tests of different physical properties.

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Abstract

The invention provides a manufacturing method of a low-cost sandstone artificial rock core for experimental teaching and relates to the technical field of petroleum engineering.The manufacturing method of the low-cost sandstone artificial rock core comprises the following steps that rock core framework particles different in particle diameter are selected; the framework particles are mixed with a cementing agent, and distilled water is added for even stirring; the mixture is charged into a mold, the mold is arranged in an artificial rock core manufacturing device for pressure exerting, the mixture is taken out and put in a high-temperature drying oven for drying and shape fixing after cementing of the artificial rock core is completed, and cutting is performed after natural cooling is performed to reach normal temperature to obtain a standard test sample, namely the low-cost sandstone artificial rock core.The rock cores different in porosity, permeability and cementation degree are manufactured under the condition that the usage amount of the cementing agent and the diameters of sand grains are changed.The rock cores manufactured by adopting the manufacturing method are similar to natural rock cores in appearance, shape, pore structure, cementation degree and other aspects and can be used for rock core flow experiments.The manufacturing method of the low-cost sandstone artificial rock core for experimental teaching is simple, safe, easy to operate and wide in material source and can be widely applied to general teaching experiments.

Description

technical field [0001] The invention relates to a method for making a rock core in the technical field of petroleum engineering, and is a method for making a low-cost sandstone artificial rock core for experimental teaching. Background technique [0002] Core physical test simulation experiment is one of the most important scientific research methods in the process of oilfield exploration and development. It is often used to obtain the basic physical parameters of the oil reservoir, guide the problems encountered in the oil reservoir development process, and especially help to improve oil and gas recovery. rate mechanism studies. At present, the artificial core production methods mainly include quartz sand epoxy resin cementation, quartz sand or glass ball filling, and quartz sand aluminum phosphate sintering. The model does not contain cement, and its pore size, pore structure, etc. are quite different from natural cores, and the application of these two cores is limited; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 曾德智蔡乐乐杨晓武董宝军刘芮嘉罗显粱许悦袁银春代林芮
Owner SOUTHWEST PETROLEUM UNIV
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