Manufacturing method of shale rock lamina

Abstract

The invention belongs to the field of petroleum geology and particularly relates to a manufacturing method of a shale rock lamina. The manufacturing method of the shale rock lamina sequentially comprises the following steps: fixing a loose shale rock sample with glue; slicing for the first time; smoothing and polishing for the first time; sticking a shale sample; and slicing for the second time, and smoothing and polishing for the second time. By virtue of the shale rock lamina prepared by the method, the post-period pollution including damages of a shale microstructure, component loss, fluorescence interference and the like, caused by a slicing, grinding and polishing process and a glue fixing process, can be avoided, so that the aim of keeping original geological information in the shale sample is realized. The manufacturing method of the shale rock lamina has the advantages that the original information of the sample is protected, the amount of needed samples is small, the lamina manufacturing period is short and the like; and the manufacturing method lays a powerful foundation for subsequent microscopic petrography and microscopic fluorescence observation of the shale rock, and accuracy of all experiment test analysis.

Description

technical field [0001] The invention belongs to the field of petroleum geology, and in particular relates to a method for making a shale rock identification slice. Background technique [0002] Before conducting detailed microscopic petrographic and microscopic fluorescence observation studies on shale with a polarizing microscope, it is first necessary to make thin sections of shale samples. Due to the well-developed phyllophysis and loose structure of shale, shale, a relatively loose rock sample, is easily damaged by slicing and grinding in the current conventional rock thin section production process, especially its lamina structure. As a result of the loss of geological information, the rock samples must be cemented before making thin sections. Commonly used loose rock cementation methods mainly include rapid boiling glue method and liquid glue cementation method. The rapid gel boiling method needs to heat and dry the shale samples, which may easily lead to the destruct...

AI Technical Summary

Problems solved by technology

The rapid gel boiling method needs to heat and dry the shale samples, which will easily lead to the destruction of the organic components in the shale, and the addition of some glues will also easily lead to the destruction of the original shale laminar structure and combination, and some organic glues (such as fir Glue) will interfere with the microfluorescence observation of shale

In addition, the characteristics of the traditional microtome cutter, such as fast speed, large vibration, and thick cutter, are easy to damage the original structure of shale, and to a certain extent cause the loss of the original geological information in the shale sample, which affects the polarizing microscope. Observation on relationship between lamina types and lamina combination in lower shale

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