Supercritical fluid well drilling and completion simulation test device

Abstract

The invention discloses a supercritical fluid well drilling and completion simulation test device comprising a main circulation loop formed by connecting a storage tank, a booster pump, a heater, a well drilling and completion simulation test platform, a separator and a cooler in turn, wherein the well drilling and completion simulation test platform comprises a shaft the bottom of which is provided with a simulated core; a drilling tool is arranged above the simulated core, and is provided with a hollow drilling tool channel for the supercritical fluid to flow; an annular cavity is formed between the drilling tool and the shaft; and a shaft outlet communicated with the inner chamber of the shaft is arranged on the side wall at the upper part of the shaft. By the supercritical fluid well drilling and completion simulation test device in the invention, the supercritical fluid well drilling and completion test process can be simulated more objectively and truly, and the shaft parameter distribution and the action condition on the stratum in the process of stimulating supercritical fluid well drilling and completion can be reflected intuitively. The supercritical fluid well drilling and completion simulation test device can be used for multiple functional expanding tests besides supercritical fluid well drilling, thus the device has wide applications.

Description

technical field [0001] The invention relates to the technical field of oil and natural gas drilling and completion, in particular to a supercritical fluid drilling and completion simulation test device. Background technique [0002] Under the current situation of energy shortage, in order to ensure my country's energy security, it is necessary to form new methods and develop new technologies to effectively improve the efficiency of exploration and development of oil and gas resources. The supercritical fluid represented by supercritical carbon dioxide has the characteristics of low viscosity and easy diffusion of gas, and high density and good solubility of liquid. It is a drilling and completion fluid medium with great potential for oil and gas resource exploration and development. The development of supercritical fluid drilling and completion technology first requires the development of necessary test devices and basic theoretical research. However, the existing convention...

AI Technical Summary

Problems solved by technology

The development of supercritical fluid drilling and completion technology first requires the development of necessary test devices and basic theoretical research. However, the existing conventional fluid drilling and completion test devices have the following shortcomings: the working pressure or temperature is too low to meet the requirements of supercritical fluid drilling and completion. The basic conditions required for critical fluid modulation and work; parameters such as the internal pressure and temperature of the wellbore cannot be precisely controlled, and the precise transition of the fluid state during the actual drilling and completion process cannot be simulated; the measurement equipment is poorly targeted and cannot accurately reflect the supercritical fluid in real time. Parameter Changes During Fluid Drilling and Completion

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