A device and method for separating particles of different shale sizes

Abstract

The invention provides an apparatus and method for separating shale particles of different particle sizes. The apparatus comprises a vertical beam column equipped with a horizontal hanging rod, wherein the horizontal hanging rod is provided with fixed buckles, a set of a liquid nitrogen bottle and an electromagnetic heater matched with each other, a plurality of polytetrafluoroethylene bottles, software controlling the apparatus, and a base. Crushed sandstone is put into the polytetrafluoroethylene bottles, and the base is allowed to rise, fall and rotate under the control of the software so as to put the polytetrafluoroethylene bottles into the liquid nitrogen bottle and the electromagnetic heater for heating and cooling by turns, so separation of shale particles of different particle sizes is eventually realized. The apparatus and method provided by the invention have the characteristics of rapidness and high efficiency, realize automatic control in the process of separation, and aresimple to operate; the apparatus is low in manufacturing cost; and the apparatus and method are applicable to effective granularity separation of shale formed due to different causes.

Description

technical field [0001] The invention belongs to the field of oil and gas exploration and development, and relates to a separation device for mud shale particles of different particle size levels. Background technique [0002] Grain size is one of the main characteristics of sediments and sedimentary rocks. It can be used as a quantitative index for the classification of sediments and sedimentary rocks, can reflect the hydrodynamic properties of sedimentation, and can be used as a basis for analyzing and comparing environments. The particle size distribution directly affects the physical properties of sediments and sedimentary rocks, such as plasticity, sintering, porosity, and permeability. Therefore, particle size analysis plays an important role in differentiating sedimentary environments, determining material transport modes, identifying hydrodynamic conditions, analyzing particle size trends, and stratigraphic division and sublayer comparison. [0003] At present, for m...

AI Technical Summary

Problems solved by technology

However, the main problem is that the pulverizer and ball mill crush the coarse-grained particles into fine-grained particles when crushing rock samples, which artificially increases the number of fine-grained particles and changes the original particle size distribution pattern of the mud shale. , and also changed the grain shape of some fine-grained particles, leading to deviations and fallacies in subsequent geological analysis and interpretation

In addition, manual grinding is inefficient and consumes a lot of manpower. Due to the limited volume of the mortar, the amount of samples ground each time is very limited, and the separation cycle is extremely long, so it is difficult to meet the needs of scientific research.

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