Deep underwater wellhead fatigue test device

Abstract

The invention relates to a deep underwater wellhead fatigue test device which comprises a power and control system, a transmission system, a wellhead system, a data acquisition and processing system and a safety protection cover, wherein the data acquisition and processing system transmits the acquired state data of the wellhead system to the power and control system; the power and control system drives the control transmission system according to the received state data; the safety protection cover is arranged on the upper part of the wellhead system, and the transmission system is also positioned in the safety protection cover; the power and control system comprises a motor, a variable frequency controller and a computer; and the motor is connected with the computer through the variable frequency controller. The deep underwater wellhead fatigue test device disclosed by the invention is simple in structure, low in test energy consumption, high in test accuracy and excellent in safety performance, has excellent underwater wellhead fatigue test capacity and can be widely applied to fatigue tests of various deep underwater wellheads.

Description

technical field [0001] The invention relates to a fatigue test device, in particular to a deep water underwater wellhead fatigue test device applied in the field of deep water oil and gas drilling equipment. Background technique [0002] In view of the depletion of onshore oil resources, the ocean has gradually become the focus of my country's oil strategy, especially the rich oil and gas resources in the deep water area of ​​the South my country Sea. The deepwater subsea wellhead is the key equipment for the exploration and development of offshore oil and gas resources, and it plays the role of connecting the formation wellbore system and the riser system. In actual work, under the excitation of riser wave-induced vibration and vortex-induced vibration in deepwater underwater wellhead, cyclic alternating stress occurs inside the underwater wellhead, which is prone to fatigue damage and failure. At present, the research on fatigue damage numerical simulation of deepwater un...

AI Technical Summary

Problems solved by technology

In actual work, under the excitation of riser wave-induced vibration and vortex-induced vibration in deepwater underwater wellhead, cyclic alternating stress occurs inside the underwater wellhead, which is prone to fatigue damage and failure

At present, the research on fatigue damage numerical simulation of deepwater underwater wellhead is mainly carried out at home and abroad, and the research on fatigue damage of deepwater underwater wellhead has not been carried out. In view of the complex structure of deepwater underwater wellhead, numerical simulation and simulation are difficult to accurately identify the fatigue damage performance and hot spots of underwater wellhead , it is necessary to further carry out deep water wellhead fatigue test research

Images