Simulation experiment device for deepwater underwater shaft

Abstract

The invention provides a simulation experiment device for a deepwater underwater shaft. According to the simulation experiment device, an experiment sleeve group is vertically placed on a base, and used for simulating the underwater shaft; supercharging equipment is used for providing a pressure for a fluid flowing in the experiment sleeve group; temperature sensors are used for measuring the temperature field changes of the fluid in the experiment sleeve group; pressure sensors are used for measuring the pressure field changes of the fluid in the experiment sleeve group; liquid level detectors are used for measuring the liquid level change values of the fluid in the experiment sleeve group; a flow detection system is used for measuring the flow of the fluid flowing through a high-pressure pipeline; a data acquisition system is used for acquiring and processing the temperature data, the pressure data and the liquid level data of the fluid in the experiment sleeve group; the high-pressure pipeline is used for providing a flowing channel for the fluid; and a temperature control system is used for providing heat for the fluid flowing in the experiment sleeve group. The device provided by the invention can be used for simulating the deepwater underwater shaft, so that the value accuracies of the measured temperature and pressure are high, and meet the actual needs of field engineering.

Description

technical field [0001] The invention relates to the test technology of the temperature and pressure field of an underwater wellbore, in particular to a simulation experiment device for a deepwater underwater wellbore. Background technique [0002] Due to the influence of water depth, the temperature of the seabed and shallow formations is low, while the temperature of the reservoir fluid is relatively high. In the first few hours of oil and gas well testing and production, due to the flow of oil and gas in the production casing, the casing rings of each layer will The temperature of the fluid in the empty confined space increases significantly. As the test or production time continues, the temperature of the wellbore can rise by nearly 100 degrees, resulting in a sharp increase in the pressure in the confined space, which will seriously damage the integrity of the wellbore. At present, for the measurement of the temperature and pressure of the deepwater underwater wellbore, ...

AI Technical Summary

Problems solved by technology

[0002] Due to the influence of water depth, the temperature of the seabed and shallow formations is low, while the temperature of the reservoir fluid is relatively high. In the first few hours of oil and gas well testing and production, due to the flow of oil and gas in the production casing, the casing rings of each layer will The temperature of the fluid in the empty confined space increases significantly. As the test or production time continues, the temperature of the wellbore can rise by nearly 100 degrees, resulting in a sharp increase in the pressure in the confined space, which will seriously damage the integrity of the wellbore

At present, for the measurement of the temperature and pressure of the deepwater underwater wellbore, on-site measurements and theoretical models are mainly used for calculation, which leads to large errors in theoretical predictions and cannot meet the actual needs of on-site engineering.

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