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Physical model making method and shale model of kerogen-bearing shale based on hot pressing

A production method and a technology of physical models, applied in the field of geophysical research in oil and gas exploration and development, can solve problems such as impact analysis and application, and achieve strong repeatability and stable and reliable production processes

Active Publication Date: 2017-11-07
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Considering that kerogen has a significant impact on the lithology and physical properties of shale and has the most direct correlation and crucial effect on the generation of oil and gas, ignoring this problem will inevitably lead to natural defects in the physical model, which will affect the Follow-up analysis and application

Method used

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  • Physical model making method and shale model of kerogen-bearing shale based on hot pressing
  • Physical model making method and shale model of kerogen-bearing shale based on hot pressing
  • Physical model making method and shale model of kerogen-bearing shale based on hot pressing

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Embodiment 1

[0057] This embodiment provides a method for making a physical model of kerogen-containing shale based on hot pressing, such as figure 1 As shown, it includes the following steps:

[0058] Put 300g of silicon micropowder with a fineness of 3000 mesh, 250g of illite with a fineness of 4000 mesh, 25g of calcite with a fineness of 4000 mesh and 100g of kerogen in a thermostat at 50°C for 48 hours, then take it out and put it into a ball mill for ball milling and mixing , the ball mill adopts a combination of ball milling beads of large, medium and small sizes, wherein the diameter of the large ball milling beads is 15mm, the diameter of the medium ball milling beads is 12mm, and the diameter of the small ball milling beads is 5mm, and the three sizes of large, medium and small The number ratio of ball milling beads of different sizes is 14:23:84, the rotating speed of the ball mill is 425.4R / min, and the ball milling time is 48h to obtain the mixed powder;

[0059]Add YY4250A / B ...

Embodiment 2

[0071] See Image 6 As shown, it is a structural schematic diagram of a hot-pressing mold for making an artificial rock model provided by a specific embodiment of the present invention, the hot-pressing mold at least includes a mold body 2 and a mold indenter 1; wherein,

[0072] The mold body 2 has a cavity 3 for making an artificial rock model, the bottom of the cavity 3 is provided with a base 7, the cavity 3 and the base 7 are surrounded by a wear-resistant layer 5, and the outer surface of the wear-resistant layer 5 has a bearing The pressure layer 6, the upper surface, the lower surface and the outer surface of the pressure-bearing layer 6 have a heat-insulating layer 13 and are fixedly connected by screws 8, the base 7 and the wear-resistant layer 5 are in close contact, The wear-resistant layer 5 and the pressure-bearing layer 6 are in close contact with the heat-insulating layer 13, and thermocouples 11 and several heaters 12 are arranged in the pressure-bearing layer...

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Abstract

The present invention provides a production method of a hot-pressing-based kerogen-containing shale physical model and the shale model. The production method comprises the following steps: mixed powder is obtained by ball milling of silica power, calcite, illite and kerogen; a binder is added into the mixed powder for uniformly mixing to obtain a mixed material; the mixed material is layer by layer spread in a hot-pressing die, after each layer of the mixed material is spread, pre-compacting treatment is performed, and a mold filled with the mixed material is obtained; and the kerogen-containing shale physical model can be obtained by final room temperature pre-compacting treatment and heating, pressing and heat and pressure preservation treatment. The production method is a physical model production method which is closest to the natural shale diagenesis environment and diagenetic mechanism. Various petrophysical parameters, mechanical characteristics, seismic properties, microstructure and diagenetic conditions of the kerogen-containing shale physical model are closer to that of natural shale.

Description

technical field [0001] The invention relates to a manufacturing method of a kerogen-containing shale physical model based on hot pressing and a shale physical model manufactured by the manufacturing method, belonging to the technical field of geophysical research of oil and gas exploration and development. Background technique [0002] Shale is a sedimentary rock with laminar and lamellar structures composed of fine-grained clastics with a particle size of less than 0.004 mm, clay minerals, and organic matter. Shale is one of the most abundant sedimentary rocks in the earth's crust, widely distributed in nature, and more than 75% of sedimentary rocks are shale. In oil-producing basins, organic shale is the main source rock; common shale types include black shale, carbonaceous shale, oil shale, siliceous shale, iron shale, calcareous shale, Sandy shale, etc. Almost any type of shale can be used as a reservoir. During the compaction process, the liquid expulsion of shale pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/00C04B26/14C04B14/06C04B14/10C04B14/28
CPCC04B26/14C04B14/062C04B14/28C04B14/10C04B14/108
Inventor 狄帮让魏建新谢剑勇
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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