Mechanical experimental device for high-temperature high-pressure high-yield deep well completion pipe column

Abstract

The invention discloses a mechanical experimental device for a high-temperature high-pressure high-yield deep well completion pipe column. The mechanical experimental device for the high-temperature high-pressure high-yield deep well completion pipe column comprises a truss (1), a shaft (2), an air compressor (3), an oil cylinder (4), a hinge seat (5), a buffer tank (6) and a pressure regulating valve (7), wherein the oil cylinder (4) is positioned on the right side of the truss (1), a cylinder barrel of the oil cylinder (4) is hinged to a ground mountain, a piston rod of the oil cylinder (4)is hinged to the truss (1), and packers (8) are arranged at the position, located on the upper end and the lower end portions, of the inner portion of the truss (1). The invention further discloses anexperimental method. The mechanical experimental device for the high-temperature high-pressure high-yield deep well completion pipe column has the beneficial effects that response data such as axialforce, displacement, strain and torque of the vibration of the pipe column can be measured; the influence mechanism of production of different gas production wells, the shaft with different inclination angles and axial forces of different end portions on pipe column vibration and buckling deformation is analyzed, and the correctness of a theoretical model is verified.

Description

technical field [0001] The invention relates to a high-temperature, high-pressure, high-production deep well completion pipe string mechanics experiment device and method. Background technique [0002] The deformation of the pipe string not only affects the safe production of the oil field, but also causes serious economic losses to the oil field. In order to study the deformation of the pipe string under complex downhole conditions, many scholars at home and abroad have established theoretical basis and under different conditions. A series of research theories and auxiliary experimental methods of pipe string mechanics have been introduced, but these research theories generally ignore the influence of pipe string inclination and different gas flow on pipe string vibration, and need to be determined under the premise of a given assumption. Approximately established, it is impossible to comprehensively and accurately give the deformation of the pipe string under actual workin...

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Problems solved by technology

[0002] The deformation of the pipe string not only affects the safe production of the oil field, but also causes serious economic losses to the oil field. In order to study the deformation of the pipe string under complex downhole conditions, many scholars at home and abroad have established theoretical basis and under different conditions. A series of research theories and auxiliary experimental methods of pipe string mechanics have been introduced, but these research theories generally ignore the influence of pipe string inclination and different gas flow on pipe string vibration, and need to be determined under the premise of a given assumption. Approximately established, it is impossible to comprehensively and accurately give the deformation of the pipe string under actual working conditions; moreover, due to the complexity of the pipe string buckling phenomenon itself, it is usually difficult to analyze in many auxiliary experiments such as the output of different gas-producing wells and different inclination angles. The wellbore and different end axial forces have independent effects on the string vibration and string buckling, and the lack of detailed error analysis of the experimental results, all of which affect the credibility of the experimental results for the corresponding theoretical support, and cannot be used for string analysis. Underground real force deformation research

Therefore, a comprehensive experimental device for the study of the mechanical behavior of the pipe string under the real stress environment has not yet been established.

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