Gas lift well drainage simulation test device and test method

Abstract

The invention relates to a gas lift well drainage simulation test device and a test method, and belongs to the technical field of gas lift well drainage in oil and gas fields. The gas lift well drainage simulation test device is composed of a wellbore simulation system, a liquid supply system, a gas supply system and a temperature and pressure control device; the gas lift well drainage simulation test method is based on the actual production well conditions, and the fluid drainage simulation test is set For the test parameters of the device, establish a gas lift well drainage simulation test device, adjust the test parameters of the liquid drainage simulation test device according to the operation status of the liquid drainage simulation test device, and determine the actual operating parameters of the actual production well. The beneficial effects are: using the opening and closing working conditions of the gas lift valve in the wellbore simulation system, observing the gradual reduction process of the liquid level in the wellbore simulation system with the working condition of the gas lift valve, and adjusting the operating parameters of the gas lift valve in the wellbore simulation system, Determine the operating parameters of the gas lift valve in the actual production well to ensure that the gas lift valve is in the best condition and ensure that the wellbore effusion is discharged step by step.

Description

technical field [0001] The invention relates to a gas lift well drainage simulation test device and a test method, and belongs to the technical field of gas lift well drainage in oil and gas fields. Background technique [0002] At present, most of the production strings of oil and gas wells use 2 7 / 8 "In light tubing production, some oil and gas wells have entered the stage of low-pressure exploitation. The formation pressure and gas well productivity have gradually decreased. The oil and gas wells' own liquid-carrying production capacity is poor, and the phenomenon of wellbore fluid accumulation occurs. When the fluid accumulation is serious, the production well will stop production. Liquid accumulation oil and gas wells In order to carry out liquid drainage production in a timely manner, the commonly used liquid drainage process of gas lift wells is: inject natural gas, nitrogen and other gases into the oil casing annulus through surface pressurization equipment, and t...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the setting parameters of the gas lift valve on the gas lift drainage pipe string do not match the actual well operating parameters, resulting in low drainage efficiency, or the wellbore liquid cannot be discharged, etc., to provide a gas lift well drainage Liquid simulation test device

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