Method and device for dispersing oil applied in scanning electron microscope
A technology of scanning electron microscope and oil cover, applied in the field of scanning electron microscope research, can solve the problems of loss, pollution of scanning electron microscope tube and sample chamber, etc., and achieve the effect of avoiding pollution
Active Publication Date: 2019-01-18
PETROCHINA CO LTD
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However, because this method is carried out in the high-vacuum chamber of the electron microscope, directly putting the oily sample into the chamber of the scanning electron microscope to draw a high vacuum will cause irreparable pollution to the mirror tube and the sample chamber of the scanning electron microscope, resulting in huge losses
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[0024] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The implementations are only some of the implementations of the present application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0025] figure 1 It is a flow chart of an oil scattering method applied in a scanning electron microscope provided in an embodiment of the present application. Although the processes described below include multiple operations occurring in a particular order, it should be clearly understood that these processes m...
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Abstract
The invention provides an oil applying method and device for a scanning electron microscope. The method includes: obtaining an oil-bearing reservoir sample and cutting the reservoir sample to obtain a sample block to be applied; placing the sample block in an oil-absorbing cover made of an oil-absorbing material; placing the oil-absorbing cover and a base plate bonded to each other in the sample chamber of the scanning electron microscope and continuously evacuating the air in the sample chamber; the air pressure in the sample chamber is returned to the normal atmospheric pressure when the air pressure in the sample chamber is kept constant for a preset period of time; taking out the oil-absorbing cover and the base plate bonded to each other from the sample chamber and removing the sample block with oil applied thereon from the oil-absorbing cover; and putting the sample block with oil applied into the sample chamber of the scanning electron microscope to observe. The embodiment of the present invention provides an oil applying method and device for the scanning electron microscope to avoid irreparable pollution to the lens cone of the scanning electron microscope and the sample chamber.
Description
technical field [0001] The present application relates to the technical field of scanning electron microscope research, in particular to an oil scattering method and device used in scanning electron microscopes. Background technique [0002] Tight oil resources have great potential and are widely distributed in many basins. Tight oil has become the protagonist of steady oil production increase. Tight reservoir rocks often develop complex micro-nano pore-throat systems, and crude oil exists in this pore-throat system. The development of tight oil is to extract crude oil from the micro-nano pore throat system. [0003] At present, there are mainly the following analysis methods for the characterization of the oiliness of oily samples in tight oil reservoirs: one is to use rock pyrolysis method to crush the oily samples and heat them, and obtain The gaseous hydrocarbon content, free hydrocarbon content, kerogen hydrocarbon content and other parameters are used to quantitative...
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IPC IPC(8): G01N23/2202
CPCG01N23/2202G01N2223/616
Inventor 王晓琦金旭李建明孙亮刘晓丹
Owner PETROCHINA CO LTD