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Rock crack observation device and method

A technology of rock fractures and observation devices, applied in the directions of measuring devices, analysis of suspensions and porous materials, fluorescence/phosphorescence, etc.

Pending Publication Date: 2020-10-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the advancement of shale oil and gas exploration, mud shale has become one of the research hotspots. In the past, epoxy resin, curing agent, and dyeing agent were injected into rock samples to observe pores and fractures with the help of casting technology. Mudstone pores and fractures are small and limited in application, so it is urgent to develop a new rock fracture observation method

Method used

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  • Rock crack observation device and method

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Embodiment 1

[0061] figure 1 A schematic structural diagram of a rock fracture observation device in an embodiment of the present invention is shown. Such as figure 1 As shown, the embodiment provides a rock fracture observation device, comprising:

[0062] The stage 1, the stage 1 is used to fix the rock sample 2; the magnetic field generator 4, the magnetic field generator 4 is used to apply magnetic force to the rock sample 2; the light source 5, the light source 5 is used to irradiate the rock sample 2 so that The surface of the fluorescent image is formed; the imaging device 6 is used for collecting the fluorescent image.

[0063] The stage 1 fixes the rock sample 2 along the horizontal direction; the magnetic field generator 4 is arranged under the stage 1 for generating magnetic force in the vertical direction; the light source 5 is arranged above the stage 1 for illuminating the rock sample 2 Upper surface: The imaging device 6 is arranged above the stage 1 and is used to collec...

Embodiment 2

[0066] figure 2 A flow chart of the method for observing rock fractures in one embodiment of the present invention is shown.

[0067] Such as figure 2 As shown, the embodiment provides a rock fracture observation method, the method includes the following steps:

[0068] Step 1: The stage 1 includes a first clamping portion 8 and a second clamping portion 9 which are arranged oppositely, grooves are provided on the inner surface of the first clamping portion 8 and the inner surface of the second clamping portion 9, The groove is used to hold the rock sample 2. The rock sample 2 is processed into sheets, and the thickness of the rock sample 2 is smaller than the height of the groove.

[0069] Step 2: Apply auxiliary observation material 3 on one side of the rock sample 2, and fix the rock sample 2 on the stage 1.

[0070] The stage 1 fixes the rock sample 2 along the horizontal direction, the magnetic field generating device 4 is arranged under the stage 1, the light sourc...

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Abstract

The invention discloses a rock fracture observation device and method, and the device comprises an objective table which is used for fixing a rock sample; a magnetic field generating device which is used for applying magnetic force to the rock sample; a light source which is used for irradiating the rock sample to form a fluorescence image on the surface of the rock sample; and an imaging device which is used for collecting fluorescence images. The method comprises steps coating an auxiliary observation material on the surface of one side of the rock sample; applying magnetic force to the rocksample through the magnetic field generating device; observing the characteristics of fluorescence property, magnetism and flowability of the material by daubing in an auxiliary manner; under the action of a magnetic field, the auxiliary observation material permeates to the other side of the rock sample, the auxiliary observation material on the surface of the rock sample emits fluorescence under irradiation of the light source, the imaging device is used for collecting a fluorescence image with crack distribution characteristics on the surface of the rock sample, direct observation of the size and form of rock cracks is achieved, and a reference basis is provided for oil and gas geology research work.

Description

technical field [0001] The invention belongs to the field of oil and gas geological exploration and development, and more specifically relates to a rock fracture observation device and method. Background technique [0002] Rock fracture is an important part of rock pore system and one of the indispensable elements of formation evaluation. There are many means and methods for the observation and research of cracks in rock samples. Yang Mingjie (Daqing Petroleum Geology and Development, June 1995, mudstone casting slicing technology) introduced the principle and method of mudstone casting slicing. Wang Yuman (Natural Gas Industry, September 2015, Quantitative Characterization of Fracture Pores in Lower Silurian Longmaxi Formation Shale, Sichuan Basin) introduced the application of high-precision electron microscopy, constant-velocity mercury injection, and nuclear magnetic resonance techniques in the observation and identification of rock fractures Condition. In addition, so...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01N21/64
CPCG01N15/088G01N21/64
Inventor 鲍云杰钱门辉刘鹏李志明黎茂稳
Owner CHINA PETROLEUM & CHEM CORP
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