Multipoint core acoustic wave test device
A testing device and multi-measuring point technology, which is applied in the direction of using sound wave/ultrasonic wave/infrasonic wave to analyze solids, etc., can solve the problems of lowering the temperature of rock samples, not being able to perform rock sample experiments with different specifications, and not being able to conduct sound wave experiments, etc., to improve work efficiency Effect
Pending Publication Date: 2018-11-27
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology
[0003] At present, when conducting acoustic emission experiments under complex stress states such as rock triaxiality, it is necessary to make rock samples of a certain size, put them in a heating box, heat them to the temperature required for the experiment, and then put them into the rock holder. The upper confining pressure and the axial pressure are tested, but during the experiment: (1) It is necessary to make rock samples of uniform specifications to conduct experiments, and it is not possible to conduct experiments on rock samples of different specifications; (2) The temperature of rock samples will continue to decrease; ( 3) There can only be transducers in the axial direction of the rock, and the acoustic wave experiment cannot be performed in the radial direction of the rock; (4) The acoustic wave experiment with multiple measuring points in the radial direction cannot be performed on the rock
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[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0021] In the description of this specification, descriptions referring to the terms "an embodiment", "a specific embodiment", "for example" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in this application. In at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics descri...
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The invention provides a multipoint core acoustic wave test device. The test device comprises a box, an electric pulse transmitter, an acoustic wave transducer, a stressed bar, a fixing unit and a calculation unit, wherein the fixing unit is arranged in the box and is used for fixing a to-be-tested core; the acoustic wave transducer is connected with the external part of the to-be-tested core andis sued for converting a received pulse signal into an acoustic wave signal, transferring the acoustic wave signal to the to-be-tested core and receiving the acoustic wave signal transferred by the to-be-tested core; a channel is arranged on the box; the stressed bar is connected with the acoustic wave transducer through the channel; the electric pulse transmitter is used for outputting the pulsesignal to the transducer through the stressed bar according to a control instruction; and the calculation unit is connected with the acoustic wave transducer through the stressed bar and is used for obtaining, analyzing and detecting the acoustic wave signal, transferred by the to-be-tested core, received by the acoustic wave transducer.
Description
technical field [0001] The invention relates to the field of energy geology used to carry out sample acoustic wave testing experiments, in particular to a device and method for acoustic wave testing of rock cores with multiple measuring points under high temperature and high pressure. Background technique [0002] Rock medium ultrasonic testing technology is a new technology developed in the past 40 years. It indirectly measures the acoustic parameters of the acoustic signal after the ultrasonic wave penetrates the rock or rock mass: changes in wave velocity, attenuation coefficient, waveform, frequency spectrum, and amplitude. Understand the physical and mechanical properties and structural characteristics of rock or rock mass. The earlier ultrasonic testing of rock media was carried out at normal temperature and pressure, but in geophysical exploration, especially in oil and gas exploration, the change of rock physical properties with temperature and pressure must be consi...
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IPC IPC(8): G01N29/07
CPCG01N29/07
Inventor 吴志勇周英鹏申瑞臣班凡生夏焱李景翠付兴付盼
Owner BC P INC CHINA NAT PETROLEUM CORP