Multi-vane anisotropic turbulent flow type low-pressure and self-balancing slurry degassing device

Abstract

The invention discloses a multi-vane anisotropic turbulent flow type low-pressure and self-balancing slurry degassing device. According to the multi-vane anisotropic turbulent flow type low-pressure and self-balancing slurry degassing device, a main body is composed of a multi-vane anisotropic turbulent flow generator and a low-pressure double-balance automatic accommodometer. The multi-vane anisotropic turbulent flow generator is provided with an agitating shaft, four sets of anisotropic vanes, an agitating barrel, a gas inlet guide pipe and a gas outlet guide pipe; the low-pressure double-balance automatic accommodometer is provided with a double-sleeve three-way closed glass outer pipe, a two-way glass inner pipe and a differential pressure balancing adjusting medium. According to the multi-vane anisotropic turbulent flow type low-pressure and self-balancing slurry degassing device, due to the design of non-equal-length backward vanes and a double-sleeve three-way gas quantity self-balancing compensation device, low-quantity gas carried by slurry can be agitated sufficiently and degassed; under the condition of ultralow gas quantity, the double-sleeve three-way gas quantity self-balancing compensation device can effectively carry away trace gas in the slurry. Therefore, the multi-vane anisotropic turbulent flow type low-pressure and self-balancing slurry degassing device is suitable for degassing the conventional slurry, is particularly suitable for degassing the slurry with great slurry density, many organic additives, great viscosity and small gas content, is complete in structure, is strong in adaptability and has a very good degassing effect.

Description

technical field [0001] The invention belongs to mechanical equipment, a drilling mud degasser, in particular to a degassing device for drilling circulating mud in scientific research drilling. Background technique [0002] In scientific research and drilling work, when analyzing and studying the gas in the drilling circulating mud, the mud should be degassed. The main part of the mud degassing device is an agitator. Most of the existing agitators are composed of an integral outer barrel and a bladed stirring shaft installed in the barrel, and are connected to the atmosphere. The stirring blade is set in a single layer, and the mud is agitated in one direction. Although this kind of agitator can also realize the degassing and stirring of the mud, the effect of stirring and degassing is not ideal, the degassing is insufficient, and the degassing amount is small. And due to the direct communication with the atmosphere, the downhole gas is greatly diluted by the atmosphere, an...

AI Technical Summary

Problems solved by technology

Although this kind of agitator can also achieve degassing and stirring of mud, the effect of stirring and degassing is not ideal, the degassing is not sufficient, and the amount of degassing is small.

And because it is directly connected to the atmosphere, the downhole gas is diluted by the atmosphere in large quantities, and the real downhole gas information cannot be obtained.

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