Drilling vibration measurement and control test bench

Abstract

The invention provides a drilling vibration measurement and control experiment bench. A linear guide rail is vertically arranged at the side of a main frame; a top tower crane module is fixed at the top; a top driving module is arranged on the guide rail and can be controlled to freely side by the top tower crane; the top driving module is connected with a bottom drilling rig module through a drill stem elastic element; the bottom drilling rig is arranged on the guide rail and can freely slide; a simulation rock stratum module is arranged at the lower end of the bottom drilling rig module, andis located on the guide rail in an adjustable way through a bolt. The experiment bench is simple and smart in design, and capable of simulating the torque fluctuation, torsion vibration, sticking-sliding movement, drill longitudinal jumping and various dynamics behaviors of a drill string in the drilling operation, and capable of real-time measuring multiple dynamic data; furthermore, the measured data is fed back to the tower crane motor and the top driving motor through a real-time control algorithm, and the active control experiment con the drill stem vibration can be realized.

Description

technical field [0001] The present invention relates to a field of drilling, in particular to a drilling vibration measurement and control experiment platform, in particular to a general-purpose instrument for measuring the longitudinal-torsional coupling vibration dynamic quantity and dynamics active control research of the drill string in the drilling operation. Experiment bench. Background technique [0002] The drilling string (drill string) system is the core component in the process of oil and natural gas resource extraction, and it is a flexible rotating mechanical system with a large length-to-diameter ratio. In the complex mechanical environment of the drilling process, the drill string system is prone to dynamic instability and harmful self-excited vibration. The bottom-hole measurement data show that in most areas of the drilling operation parameter plane, the drill string has strong nonlinear longitudinal-torsional coupling self-excited vibration, which leads to...

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Problems solved by technology

Similarly, this equipment is a static experiment and cannot simulate the dynamic characteristics of the drill string

And the patent document CN103712790A provides a kind of experimental equipment for researching the dynamic characteristics of drill string, which designs the parameters of the experimental equipment according to the principle of dynamic similarity, and can realize the experimental simulation and measurement of drill string lateral whirl, but the equipment It is impossible to simulate and observe the longitudinal and torsional movements of the drill string

Patent document CN201391312Y provides a drill string and drilling fluid coupled dynamic behavior research test bench, which simulates the drilling pressure dynamic force through the vibration exciter at the bottom, and can study the longitudinal motion of the rotating drill string under the action of drilling fluid, but The test bench cannot simulate and observe the torsional movement of the drill string, and at the same time, there is no cutting and breaking process between the drill bit and the rock formation at the bottom, which can lead to large test errors

In addition, none of these existing experimental devices / benches can actively suppress the vibration of the drill string, especially the longitudinal-torsional coupling vibration

[0005] It can be seen that there is still a lack of a general-purpose experimental equipment that can simultaneously observe the longitudinal and torsional dynamics of the drill string and actively control the vibration

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