Rock sample grinding and separation device and method

Abstract

The invention discloses a rock sample grinding and separation device and method. The device comprises: a casing, a grinder arranged in the casing, the grinder includes a body, and abrasive grains are movably arranged in the body , the body has a rotating shaft, and the body can rotate around the rotating shaft to drive the abrasive grains to grind rock samples; the body has a feed port and a discharge port, and the housing is connected to the A feed channel that can be opened and closed is formed between the ports; the gas device is connected to the body through a pipeline, and is used to blow gas to the rock sample of the body; the cleaning device is connected to the body through a pipeline, and is used to In order to supply cleaning liquid to the body; a rock separation system connected with the discharge port, the rock separation system includes screens of different meshes. The invention can efficiently, safely and controllably grind target rock samples.

Description

technical field [0001] The invention relates to the technical field of petroleum geological experiments, in particular to a rock sample grinding and separating device and method. Background technique [0002] The descriptions in this section merely provide background information related to the present disclosure and do not constitute prior art. [0003] Shale oil and gas are important unconventional oil and gas resources. At present, the exploration and development of shale oil and gas is in a state of rapid development. Shale oil and gas are mainly stored in the pores of shale reservoirs. The degree of development of pores in shale reservoirs is the basic premise for shale to have good oil and gas properties. For shale reservoirs, the storage space of oil and gas is mainly concentrated in pores below 1 μm. Conventional core description, thin section analysis and other methods cannot describe pores of this scale, and it is often necessary to use X-ray diffraction, nitroge...

AI Technical Summary

Problems solved by technology

However, the high content of silicon and calcium will lead to an increase in the hardness of shale rocks. In the process of grinding with existing methods and devices, insufficient grinding and large sample loss often occur, which is not conducive to the development of experiments.

[0009] 2. The existing methods and devices cannot combine the two processes of rock grinding and rock separation, and can only perform the two processes of grinding and screening separately. The required time and workload are relatively large, and the experimental efficiency is low.

[0010] 3. In the experimental process using existing methods and devices, if there is a long time interval between the two processes of grinding and screening, the ground shale powder will react with oxygen, water vapor and other substances in the atmosphere, and water absorption will occur Or suffer from oxidation, destroying the properties of shale itself, leading to deviations in subsequent experimental results

[0011] 4. Most of the existing rock sample acquisition technologies are open and without external equipment protection, so a large amount of dust and gravel will be generated during the grinding and screening process, which will cause physical damage to the experimenters and will also damage the air pollution

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