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Artificial sandstone physical model and manufacturing method and application thereof

A production method and technology of physical models, applied in the field of geophysical research, can solve problems that cannot truly reflect the rock physical characteristics and seismic response of underground reservoirs

Active Publication Date: 2014-03-05
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional artificial sandstone made of epoxy resin cemented quartz sand cannot withstand high pressure and temperature, so it cannot truly reflect the petrophysical characteristics and seismic response of underground reservoirs.

Method used

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  • Artificial sandstone physical model and manufacturing method and application thereof
  • Artificial sandstone physical model and manufacturing method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] This embodiment provides a method for making a physical model of artificial sandstone, such as figure 1 As shown, it includes the following steps:

[0037] Put 500 g of 100-mesh quartz sand, 50 g of 350-mesh feldspar, 50 g of 500-mesh kaolin and 50 g of 800-mesh talc into a ball mill jar, put the ball mill jar into a ball mill for dry ball milling, and mix evenly to obtain a mixed powder;

[0038] Add 65g of water glass (the water glass has a modulus of 2.5 and a density of 1.4g / cc) into the mixed powder, put it into a mixer and stir and mix evenly to obtain a mixed material;

[0039] After the cleaned and assembled mold is coated with vaseline, the mixed material is put into the mold to obtain a mold filled with the mixed material;

[0040]The mold filled with the mixed material is placed on a press, and after being compacted for 24 hours under a constant pressure of 20T, the mold is removed and the green body is taken out, and the green body is put into a constant te...

Embodiment 2

[0044] This embodiment provides a method for making a physical model of artificial sandstone, which is basically the same as that of Example 1, except that the quartz sand is a mixture of 200-mesh quartz sand and 400-mesh quartz sand with a weight ratio of 1:1. Mixing (the total weight of quartz sand is 500g), the pressure of compaction treatment is 100T, and the sintering temperature is 1300°C.

[0045] After testing, the artificial sandstone physical model of this embodiment has a density of about 2.3g / cc, a porosity of about 10%, and a longitudinal wave velocity of about 4100m / s. The parameters of the actual natural sandstone are as described in Example 1. The above parameters are close to the physical parameters of the actual natural sandstone and meet the requirements of the simulation experiment.

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Abstract

The invention provides an artificial sandstone physical model and a manufacturing method and application thereof. The manufacturing method for the artificial sandstone physical model includes the following steps that ball-milling mixing is carried out on quartz sand, feldspar, kaolin and talc to obtain mixed powder; agglomerant is added to the mixed powder, blending and mixing are carried out, and mixed materials are obtained; the mixed materials are laid in a die, and the die with the fully-mixed materials is obtained; after the die with the fully-mixed materials is compacted, a blank is dried and sintered in sequence, and the artificial sandstone physical model is obtained. The artificial sandstone physical model is obtained through the manufacturing method. The invention further provides the application of the artificial sandstone physical model in seismic wave response simulation study of sandstone reservoirs. According to the model, the manufacturing method and the application, various rock physical parameters and mechanical characteristics are closer to those of the artificial sandstone physical model for natural rocks, and the artificial sandstone physical model can be applied to the seismic wave response simulation study of the sandstone reservoirs.

Description

technical field [0001] The invention relates to an artificial sandstone physical model and its manufacturing method and application, belonging to the technical field of geophysical research for oil and gas exploration and development. Background technique [0002] Sandstone in nature refers to sedimentary clastic rock formed by the deposition of clastic mineral components such as quartz and feldspar. It is formed by accumulating in the basin through a series of geological processes such as weathering, denudation, and transportation of rocks in the source area. Sandstone rocks are composed of clastics and interstitials. The clasts are mainly quartz and feldspar minerals, in addition to muscovite, heavy minerals, cuttings and so on. The interstitial material includes two components of cement and debris matrix. Common cementation methods of sandstone include siliceous cementation and carbonate cementation; the matrix components mainly refer to finer-grained clay minerals or s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00G01V1/28
Inventor 丁拼搏狄帮让魏建新栾鑫元
Owner BC P INC CHINA NAT PETROLEUM CORP
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