Experimental device and experimental method for testing vibration of completion string of high-yield gas well

A technology for well completion strings and experimental devices, which is applied in measuring devices, vibration testing, and testing of machine/structural components. It can solve problems such as string vibration, oil and gas well safety accidents, and oil well damage, and achieve accurate and timely data collection. , Easy installation and disassembly, simple structure and practical effect

Inactive Publication Date: 2018-09-14
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0002] The completion string of high-yield oil and gas wells is a channel for high-speed gas circulation. Due to the supply, flow and pressure changes of the reservoir, the gas flow excitation of high-yield ...

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  • Experimental device and experimental method for testing vibration of completion string of high-yield gas well
  • Experimental device and experimental method for testing vibration of completion string of high-yield gas well
  • Experimental device and experimental method for testing vibration of completion string of high-yield gas well

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with accompanying drawing, protection scope of the present invention is not limited to the following:

[0041] Such as Figure 1~4 As shown, an experimental device and experimental method for testing the vibration of a high-production gas well completion string, which includes a data acquisition, analysis and processing system composed of a camera (8), a computer (9), a strain gauge (10), and a cable (12) , an airflow generating device consisting of an air compressor (1), a buffer tank (2), and a pressure regulating valve (3), and a fixing device (7), a packer (6), a liner model (11), and tightened A fixed integral structure composed of a holder (13), a flow structure composed of a pressure gauge (4) and a pipe string (5).

[0042] After the airflow generating device generates the airflow with a fixed flow rate, it flows to the flow structure composed of the pressure gauge (4) and the pipe string (5)....

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Abstract

The invention discloses an experimental device and experimental method for testing the vibration of the completion string of a high-yield gas well. The device includes an air compressor (1), a buffertank (2), a pressure regulating valve (3), a pressure gauge (4), a string (5), a packer (6), a fixing device (7), a camera (8), a computer (9), a strain gauge (10), a tail pipe model (11), a cable (12), and a screw clamp (13). The airflow generated by the air compressor (1) is regulated by the buffer tank (2) and pressure regulating valve (3) and then passes through the string (5). The flow rate is adjusted to simulate the same deformation effect of the high-yield gas state. The strain gauge (10) is installed on the string (5) to acquire the micro-strain of the string (5). In cooperation withthe high-speed camera (8), the vibration frequency and the deformation of the string is obtained by modal analysis. The experimental device is simple, restores the working state of the string in the high-yield gas well, and accurately measures the vibration frequency and the deformation degree of the string at different flow rates.

Description

technical field [0001] The invention relates to the fields of fluid mechanics and gas well safety monitoring, and relates to an experimental device and an experimental method for testing the vibration of a high-yield gas well completion pipe string. Background technique [0002] The completion string of high-yield oil and gas wells is a channel for high-speed gas circulation. Due to the supply, flow and pressure changes of the reservoir, the gas flow excitation of high-yield gas wells, and frequent well opening and closing operations, the string will vibrate violently under the action of dynamic load. In severe cases, even Oil well damage and oil and gas well safety accidents will occur. Therefore, the vibration of the pipe string is an extremely important research content. In order to understand the mechanical properties of the completion pipe string under the action of dynamic load, whether it can withstand the load intensity of the well completion operation, and whether ...

Claims

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Application Information

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IPC IPC(8): G01M7/02G01H17/00G01H9/00
CPCG01H9/00G01H17/00G01M7/00
Inventor 蔡明杰毛良杰张洪王国荣刘清友
Owner SOUTHWEST PETROLEUM UNIV
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