Rock debris sample containing device and rock debris casting slice making method using same

Abstract

The invention discloses a rock debris sample containing device and a rock debris casting slice making method using the same. The invention provides a rock debris casting slice making method. The rockdebris casting slice making method comprises the following steps of: 1) pretreating a rock debris sample; 2) putting the pretreated rock debris sample into a rock debris sample containing device, andputting the rock debris sample containing device into a glass test tube; 3) preparing a casting by adopting a standard rock slicing method, injecting the casting into the glass test tube containing the rock debris sample containing device, and performing curing to obtain a casting sample; and 4) separating the casting sample from the glass test tube, and slicing the separated casting sample to obtain a rock debris casting slice. The invention further provides a rock debris sample containing device. The rock debris sample containing device disclosed by the invention has independence, permeability, applicability, economy and easiness in cutting, and can be used for quickly and economically finishing the manufacturing of rock debris casting slices in batches and serving oil-gas exploration and development.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration. More specifically, it relates to a cuttings sample holding device and a cuttings casting slab method using the device. Background technique [0002] Rock cast slices are the basic means and common methods for studying the microstructure of rock minerals and reservoir pore systems. The procedure is: 1) Cut out a massive cylinder with a thickness of about 3-6mm and a diameter of 25mm or a square cylinder with a thickness of about 3-6mm and a side length of 24mm or 18mm from the whole rock hand specimen or core sample. Block samples are then placed into a glass cylinder with a diameter of about 29mm; 2) Put the glass cylinder containing the sample into the rock pore casting instrument, and press the colored casting body into the rock sample under high temperature and high pressure conditions 3) Crack the glass cylinder, take out the sample, cut it and grind it into a thin slice of ro...

AI Technical Summary

Problems solved by technology

For example, in the petroleum industry standard-rock slicing method (SY / T 5913-2004), the rock casting object is a rock sample of 25mm * 25mm * 5mm or a diameter of 25mm * 5mm; CN101441147A provides a kind of making of rock pore casting thin slice method, it is also only made for the block sample (≥20mm×20×3mm) casting; other methods such as CN1544907A provide a kind of cuttings thin slice identification sample preparation method is only to stick cuttings on the thin slice to make common The thin slices can not be made into casting sheets; although the carbonate rock cuttings microscopic pore casting method provided by CN106153413A can make carbonate rock cuttings castings, its principle is to put the cuttings into test tubes, and each sample In the middle, only rely on mica sheets for isolation, resulting in fine rock debris particles are easy to mess up the sample with the sloshing of the test tube, the inclination of the mica sheet and the existing gaps during the sample preparation process, affecting the purity of the sample and misleading the sample preparation process. Although CN108106892A provides a kind of cuttings casting method based on vacuum embedding, it can also instruct and complete the casting of cuttings to make, but its principle is vacuum embedding, that is, the pressure that the casting is pressed into cuttings has only one atmospheric pressure. Partially dense or low-porosity-low-permeability cuttings castings are difficult to inject, which affects the later observation of pores

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