Optical microscopic observation device and method

[0066] like figure 2 As shown, the present invention provides an optical microscopic observation device, which includes an autoclave 1, an image acquisition device 2, an observation device 3, a glass visual model 4 and a displacement device 5, and the autoclave 1 has a confining pressure cavity 11, The image acquisition device 2 and the displacement device 5 are arranged outside the autoclave 1, and the observation device 3 and the glass visual model 4 are arranged in the confining pressure cavity 11. 4. Apply confining pressure to simulate the high pressure environment of the oil reservoir. The glass visual model 4 is connected to the displacement equipment 5. The glass visual model 4 has etched channels. To simulate the water flooding process in a high-pressure environment, the autoclave 1 is provided with opposite light source windows 12 and observation windows 13, and the light of the light source 9 enters the autoclave 1 through the light source window 12, for example, the

[0089] The present invention also provides an optical microscopic observation method, which uses an optical microscopic observation device to perform a microscopic visualization experiment. The optical microscopic observation device in this embodiment has the same structure, working principle and beneficial effect as the first embodiment. No further description; the optical microscopic observation method of the present invention comprises the following steps:

[0090] Step S1: injecting the confining pressure fluid into the confining pressure cavity 11 for providing the confining pressure to the glass visual model 4;

[0091] Step S2: evacuating the glass visual model 4;

[0092] Step S3: inject oil into the pores of the glass visual model 4 through the displacement device 5, and make the oil pressure in the pores of the glass visual model 4 and the confining pressure in the confining pressure cavity 11 keep a predetermined pressure difference and increase synchronously, Until t