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Full-diameter rock core fracturing seam making evaluation instrument

A full-diameter core and core technology, which is used in instruments, scientific instruments, and the use of stable tension/pressure to test the strength of materials. Formation of morphological crack formation trends, etc.

Pending Publication Date: 2021-07-06
扬州华宝石油仪器有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The existing rock mechanics testing machines are basically standard equipment. The axial pressure, confining pressure, and pore pressure parameters are all standard parameters. The rock deformation parameters are mainly detected by high-precision displacement sensors, and it is impossible to determine the location and time node of rock cracks. , it is impossible to clearly observe the shape of the fracture formation inside the rock and the trend of fracture formation

Method used

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  • Full-diameter rock core fracturing seam making evaluation instrument
  • Full-diameter rock core fracturing seam making evaluation instrument
  • Full-diameter rock core fracturing seam making evaluation instrument

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Embodiment 1

[0026] Such as Figure 1-4 As shown, this embodiment provides a structure for testing rock triaxial fracturing and fracturing. The axial pressure chamber 1, axial piston 2, and cylinder 3 form a hydraulic piston structure, which mainly acts on the upper end surface of the core sample 12. Axial force, the axial force can be designed not to exceed 2500KN according to the needs.

[0027] Such as figure 1 As shown, the cylinder 3 and the core base 10 can form a high-pressure core cavity, and a confining pressure of 100 MPa can be designed according to the needs. The sealing of the core cavity can be provided by a 5000KN hydraulic cylinder acting on the axial pressure chamber 1. .

[0028] Such as Figure 1~2 As shown, the upper plug 5 of the rock core and the lower plug 7 of the rock core (the structure of the lower plug of the rock core is the same as that of the upper plug of the rock core, and the specific structure can be found in figure 2 ) is provided with a fracturing ...

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Abstract

The invention discloses a full-diameter rock core fracturing seam making evaluation instrument, and relates to the technical field of rock mechanics research. The instrument is compact and reasonable in structure. The formation form and the formation trend of the rock crack are detected by adopting ultrasonic waves, the formation position and the time node of the rock crack can be accurately judged, and the formation form and the formation trend of the crack in the rock can be clearly observed. Meanwhile, a high-temperature and high-pressure triaxial pressure loading mechanical structure is adopted, so that the experiment process has a three-dimensional visual effect. Compared with an existing method comprising fracturing fluid fracturing by adopting a tracer agent and anatomical verification method after an experiment, the effect is more direct, and the experiment process is clearer.

Description

technical field [0001] The invention relates to the technical field of rock mechanics research, in particular to a full-diameter rock core fracturing fracture evaluation instrument. Background technique [0002] Reservoir rock mechanical parameter characteristics and fracturing laboratory simulation data are important basis for reservoir stimulation parameter design, and fracture creation conditions and fracture cracking degree are also key issues during fracturing stimulation. Three-dimensional rock fracture simulation experiment is an important means to study rock mechanics, and the data of rock three-dimensional fracture simulation experiment is an important parameter of rock mechanics. The three-dimensional fracture-making simulation experiment of rock can relatively completely simulate the mechanical properties of rock and soil under the original stress state, which is an important basis for engineering design. Because the deep rock is in a complex stress state, the ro...

Claims

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Application Information

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IPC IPC(8): G01N3/12G01N3/06G01N3/02G01N29/07
CPCG01N3/12G01N3/06G01N3/02G01N29/07G01N2203/0019G01N2203/0048G01N2203/006G01N2203/0658
Inventor 刘菲
Owner 扬州华宝石油仪器有限公司
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