Device for sampling mud rock by cooling air and rock sample sampling method thereof

Abstract

The invention relates to a device for sampling mud rock by cooling air and a rock sample sampling method thereof; wherein the device belongs to a rock mechanical sample preparation tool, a holding device of the device for sampling the mud rock by cooling air is arranged on a pedestal, a diamond sampling drill is arranged at the lower end of the sampling device, a blowing device, a refrigerating plant and a nozzle of the sampling device are connected into a whole, a transparent shade covers the holding device and the nozzle inside, the nozzle is positioned above the diamond sampling drill and a mud rock sample contact point, holes are arranged on the upper surface of the transparent shade, the diamond drill can freely get in and out of the transparent shade through the holes, the transparent shade is provided with a venting device, the holding device is a holder which can hold small-dimension objects and a 5mm-10mm of rubber cushion layer is arranged on the inner wall of the holder. The method of the invention can not only clean mud rock fragment and dust but also can cool the diamond sampling drill to prevent the drill from being burnt, avoids partial stress concentration of the mud rock sample and has high coring success rate.

Description

1. Technical field: [0001] The present invention relates to a rock mechanics sample preparation tool mainly used in the fields of rock mechanics engineering, rock mechanics engineering, petroleum engineering and mining engineering, and specifically relates to a device for taking rock samples by mudstone cooling gas and rock sample taking Methods. 2. Background technology: [0002] In order to understand the physical and mechanical properties of the surface and deep underground rocks, scholars conduct a large number of rock mechanics experiments every year. The current sample size used in rock physics and mechanics testing is mostly φ25mm*50mm or φ50mm*100mm. Due to the limitation of formation coring size, rock samples of φ25*50mm are commonly used to test the mechanical properties of deep formation rocks in petroleum engineering. At present, successful sampling of mudstone is a well-recognized sampling problem in the field of rock mechanics. Because mudstone is a kind of ...

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Problems solved by technology

[0004] An object of the present invention is to provide a device for taking rock samples with mudstone cooling gas, which is used to solve the problems of low success rate and high cost of mudstone coring in the prior art; another object of the present invention is to provide this mudstone cooling gas sampling device Rock sample device and method for taking rock samples

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