High-pressure high-precision extremely-low dynamic flow measurement test device
A technology of dynamic flow and test equipment, which is applied in the direction of measuring equipment, measuring flow/mass flow, liquid/fluid solid measurement, etc., can solve problems such as the inability to accurately monitor the dynamic evolution of flow over time, and achieve the effect of improving monitoring accuracy
Inactive Publication Date: 2020-09-22
TAIYUAN UNIV OF TECH
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Problems solved by technology
[0006] The present invention overcomes the deficiencies of the prior art, and proposes a high-pressure, high-precision, extremely low dynamic flow measurement test device to solve the problem of being unable to accurately monitor each fracturing hole in a hydraulic fracturing test under extremely high pressure and extremely low flow / velocity conditions The problem of the dynamic evolution law of the traffic in the network over time
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[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail in combination with the embodiments and accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. The technical solutions of the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings, but the scope of protection is not limited thereto.
[0025] combine figure 1 and figure 2 Describe this embodiment, a high-pressure, high-precision, dynamic extremely low flow measurement test device described in this embodiment, the test device is used to monitor the flow rate in each fracturing hole during the porous hydraulic fracturing test process under high pressure and extremely low flow conditions. The dynamic evoluti...
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The invention discloses a high-pressure high-precision extremely-low dynamic flow measurement test device, and relates to the technical field of rock mechanics and rock engineering. The problem that the dynamic evolution rule of the flow in each fracturing hole along with time in the hydraulic fracturing test cannot be accurately monitored under the conditions of extremely high pressure and extremely low flow / flow velocity is solved. The device specifically comprises a high-pressure closed kettle, a distance measuring device and a liquid injecting and discharging device. Liquid injection and liquid discharge actions are respectively carried out in the fluid cavity from the bottom and the top of the high-pressure closed kettle through the liquid injection and discharge device, so that the sealed linkage piston rod in the high-pressure closed kettle is linked with an external distance measuring device, and the flow of the piston at any time node is calculated by measuring the moving distance of the piston. According to the invention, the evolution characteristic of the flow distribution rule in each fracturing hole along with time in the porous hydraulic fracturing test process is realized through the high-pressure-resistant cylinder body kettle, the distribution rule of extremely low flow can be effectively monitored, and the monitoring precision is effectively improved.
Description
technical field [0001] The invention belongs to the technical field of rock mechanics and rock engineering, and relates to a high-pressure, high-precision, extremely low dynamic flow measurement test device; it is suitable for monitoring the dynamic evolution of the injection fluid in each fracturing hole with time during the porous fracturing process of hydraulic fracturing tests characteristic research. Background technique [0002] Flow refers to the amount of fluid flowing through the effective section of a closed pipe or open channel per unit time, also known as instantaneous flow. When the amount of fluid is expressed in volume, it is called volume flow; when the amount of fluid is expressed in mass, it is called mass flow. The volume of fluid flowing through a certain section of pipe per unit time is called the volume flow of the cross section. Referred to as the flow, with Q to represent. For flow monitoring methods, there are mainly volumetric flowmeters, differe...
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IPC IPC(8): G01F3/14G01N3/12
CPCG01F3/14G01N3/12
Inventor 蔡婷婷苏晓玉冯增朝李学成王幸胡林杰
Owner TAIYUAN UNIV OF TECH