A shale rock sample leak detection device and its leak detection method
A technology of sealing detection and detection method, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, by detecting the appearance of fluid at the leakage point, and by measuring the increase and deceleration rate of fluid, etc. It is not good and other problems, to achieve the effect of maintaining integrity, high degree of automation, and compact structure of the whole machine
Active Publication Date: 2018-12-21
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Problems solved by technology
However, the above methods are not suitable for the problem of whether the internal sealing of rock samples is good.
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[0034] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, a shale rock sample airtightness detection device of the present invention includes a cabinet 40, which is provided with a rock sample holding cabin 41, a gas detection cabin 42, an electric four-way valve 45, a vacuum pump 46 and a blower 47 , the rock sample holding cabin 41 is fixedly connected on the front side inner wall of the cabinet body 40 by screws, the gas detection cabin 42 is arranged on the bottom in the cabinet body 40 and is connected with the rock sample storage cabin 41 through a sealed pipe joint 48, the gas detection cabin 42 A methane detector 43 and a pressure detector 44 are installed inside, the gas detection chamber 42 is connected to the first interface of the electric four-way valve 45 through the intake and exhaust pipeline 49, and the second interface of the electric four-way valve 45 is connected through the exhaust The pipeline 50 is connected to the vacuum pump 46, the thi...
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The invention provides a shale sample sealing performance detection device. The device includes a cabinet body, the cabinet body is internally provided with a shale sample accommodating tank, a gas detection tank, an electric four-way valve, a vacuum pump and a blower; the shale sample accommodating tank is fixedly connected on the inner wall of the front side of the cabinet body through bolts, the gas detection tank is installed at the bottom in the cabinet body and is connected with the shale sample accommodating tank through a sealing pipe connector, the gas detection tank is internally provided with a methane detector and an air pressure detector, the gas detection tank is connected with a first connecting port of the electric four-way valve through a gas intake / exhaust pipeline, a second connecting port of the electric four-way valve is connected with the vacuum pump through a gas exhaust pipeline, a third connecting port of the electric four-way valve is connected with the blower through a gas inlet pipeline, and a fourth connecting port of the electric four-way valve is not connected. The non-contact shale sample detection is adopted, the integrity of shale samples can be kept, the whole device is compact in structure, a shale sample sealing performance detection experiment can be completed in a short time, and the experiment efficiency and the accuracy of experimental results can be both greatly improved.
Description
technical field [0001] The invention belongs to the technical field of shale gas-bearing property gas measurement, and in particular relates to a shale rock sample sealing performance detection device and a sealing performance detection method thereof. Background technique [0002] The tightness of the rock is related to the degree of crack development of the rock itself, but it is not accurate enough to reflect the tightness of the rock by measuring the degree of crack development, because the tightness is related to the cracks that communicate with the outside world. There are many methods for crack detection at present. Among them, CT scanning and acoustic wave detection are mainly used in geological engineering, such as a system and method for detecting internal crack structures in rocks in patent 201310129744.9. The CT scanning device is used for X-ray detection of the sample to be tested; for CT scanning detection, Under the condition of no damage to the detected objec...
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IPC IPC(8): G01M3/20G01M3/26
CPCG01M3/20G01M3/26
Inventor 王宏语范雪松杨润泽
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)