Substitution-method well killing experiment device and method

Abstract

The invention relates to a substitution-method well killing experiment device and method. The device comprises a high-pressure transparent well shaft, a fluid storage tank, a fluid pipeline, an air compressor, a data acquisition device and a computer, wherein the high-pressure transparent well shaft is used for simulating a borehole on site and provided with a pressure sensor used for recording borehole and well bottom pressure in real time; the fluid storage tank is provided with a fluid storage tank fluid charging opening, a fluid storage tank deflation opening, a fluid storage tank fluid outlet and a fluid level meter; the fluid pipeline is used for forming a kill fluid circulating loop between the fluid storage tank and the high-pressure transparent well shaft; the air compressor is used for generating high-pressure air and conveying the air to the high-pressure transparent well shaft so as to be used for simulating high well shutdown pressure; the data acquisition device is used for acquiring simulation experiment field data; the computer is used for controlling experiment field operation according to the simulation experiment field data.

Description

technical field [0001] The invention relates to an experimental device for killing a well by a displacement method, and relates to the field of petroleum engineering. Background technique [0002] Due to the existence of many uncertain factors in the drilling process, sometimes the formation fluid will invade the wellbore, especially when encountering a high-pressure gas layer, under the action of a large pressure difference, the gas will cause the drilling fluid in the drill pipe and the annulus The wellbore is sprayed out, so that the wellbore presents an empty wellbore state, and there is a great potential safety hazard. At this time, because the normal circulation cannot be established, the conventional well killing method can no longer be used. If reasonable well killing measures are not taken, it will lead to catastrophic consequences—blowout. Although people have a deep understanding of the hazards of blowout accidents and are also trying to avoid the occurrence of b...

AI Technical Summary

Problems solved by technology

Although the displacement killing method has been practically applied in the field, many key parameters are still determined according to experience, and there is no reasonable calculation method

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