Artificial mudstone core and preparation method and application thereof

An artificial core and mudstone technology, applied in the field of artificial mudstone core and its preparation, can solve the problems of small porosity, low permeability, and difficulties, and achieve the effect of small porosity, low permeability and good appearance

Pending Publication Date: 2018-09-28
李战伟 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for natural mud shale, its permeability is low and its porosity is small, the general permeability is about 0.01-0.001mD, and the porosity is less than 10%. However, it is relatively difficult to simulate such low-porosity and low-permeability mudstone cores with the existing technology , therefore, it is necessary to prepare an artificial core with low permeability and small porosity, so that it can be as close as possible to natural mud shale in laboratory simulation experiments

Method used

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  • Artificial mudstone core and preparation method and application thereof
  • Artificial mudstone core and preparation method and application thereof
  • Artificial mudstone core and preparation method and application thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0045] In parts by mass, the artificial mudstone core provided by the present embodiment includes the following components:

[0046]

[0047] Prepare the above-mentioned artificial mudstone core according to the following method:

[0048] (1) 10 parts of nano-calcium carbonate, 30 parts of 20-40 mesh quartz sand, 40 parts of 60-80 mesh quartz sand and 10 parts of 120-160 mesh quartz sand are mixed, and fully stirred to obtain the artificial mudstone core skeleton material;

[0049] (2) Dilute 80 parts of cement with 30 parts of potassium chloride brine with a concentration of 6 wt%, then mix with the skeleton material obtained in step (1), stir evenly, and evenly mix the skeleton material with the cement as much as possible to form a The aggregate of the thin film adhesive film; the cement is mixed according to the ratio of 1:2:2:20:30 by dibutyl phthalate, ethylenediamine, acetone, epoxy resin and silicate;

[0050] (3) 20 parts of kaolinite and 10 parts of montmorillonit...

Embodiment 2

[0054] In parts by mass, the artificial mudstone core provided by the present embodiment comprises the following components:

[0055]

[0056] Prepare the above-mentioned artificial mudstone core according to the following method:

[0057] (1) Mix 10 parts of nano-calcium carbonate, 30 parts of 60-80 mesh quartz sand, 20 parts of 100-120 mesh quartz sand and 40 parts of 120-160 mesh quartz sand, fully stir to obtain the artificial mudstone core skeleton material;

[0058] (2) Dilute 70 parts of cement with 30 parts of potassium chloride brine with a concentration of 6 wt%, then mix with the skeleton material obtained in step (1), stir evenly, and evenly mix the skeleton material with the cement as much as possible to form a The aggregate of the thin film adhesive film; the cement is mixed according to the ratio of 2:2:2:30:30 by dibutyl phthalate, ethylenediamine, acetone, epoxy resin and silicate;

[0059] (3) 10 parts of kaolinite and 20 parts of montmorillonite are mixe...

Embodiment 3

[0063] In parts by mass, the artificial mudstone core provided by the present embodiment includes the following components:

[0064]

[0065] Prepare the above-mentioned artificial mudstone core according to the following method:

[0066] (1) Mix 10 parts of nano-calcium carbonate, 40 parts of 20-40 mesh quartz sand, 20 parts of 40-60 mesh quartz sand and 40 parts of 60-80 mesh quartz sand, fully stir to obtain the artificial mudstone core skeleton material;

[0067] (2) Dilute 70 parts of cement with 30 parts of potassium chloride brine with a concentration of 6 wt%, then mix with the skeleton material obtained in step (1), stir evenly, and evenly mix the skeleton material with the cement as much as possible to form a The aggregate of the thin film adhesive film; the cement is mixed according to the ratio of 2:1:3:30:20 by dibutyl phthalate, ethylenediamine, acetone, epoxy resin and silicate;

[0068] (3) 10 parts of montmorillonite and 30 parts of illite are mixed and st...

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Abstract

The invention relates to an artificial mudstone core and a preparation method and application thereof. The artificial mudstone core comprises, by mass, 10-60 parts of clay mineral material, 30-80 parts of cementing agent, 10-40 parts of inorganic nano-material and 30-160 parts of quartz sand. The artificial mudstone core is obtained by mixing the clay mineral material, the cementing agent, the inorganic nano-material, the quartz sand and saline water and then performing solidification reaction and curing treatment. The artificial mudstone core has a perfect appearance and the composition characteristics of a natural mudstone core, the lithological characters and physical property parameters of the artificial mudstone core are close to those of natural mudstone, and thus the artificial mudstone core can replace the natural mudstone core for indoor simulation experiments of various drilling engineering measures, can provide technological support for oilfield exploration and development production, and has good economic benefits and application prospects.

Description

technical field [0001] The invention relates to the technical fields of resource exploration and oil exploitation, in particular to an artificial mudstone core and its preparation method and application Background technique [0002] In oilfield exploration and development and production, many problems cannot be solved without core experiments. At present, due to the limitation of the source and size of natural cores, most experiments use artificial cores, except for a few using natural cores. [0003] Commonly used artificial core production methods include quartz sand filling, aluminum phosphate quartz sintering, quartz sand epoxy resin cementation, and clay cemented corundum sand by sintering. For example CN204532344U discloses a kind of artificial rock core, is cemented by quartz sand epoxy resin. CN103868772B A method for preparing an artificial core for rock drillability testing. Clay is used to prepare cement; talc, gypsum, and calcite are used to prepare rock-formin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28G01N1/286
Inventor 李战伟蒋卓赵永光王荐邓威舒福昌向兴金来东风党辉王瑜
Owner 李战伟
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