Degasser

Abstract

The invention discloses a degasser, which belongs to the comprehensive logging and gas logging equipment and relates to a device for performing online degassing on the slurry extracted from oil exploration drilling. The degasser is provided with a tank body for containing the slurry and a stirring body, wherein the stirring body is used for extending into the tank body to stir the slurry; the tank body is provided with a slurry inlet and a slurry outlet; the inner cavity of the tank body is set as a level-by-level stirring cavity; the level-by-level stirring cavity is divided into classification chambers by a slurry blocking component in the tank body; the slurry blocking component comprises a first slurry blocking sheet and a second slurry blocking sheet; the first slurry blocking sheet is provided with an outer edge that can be closely combined with the inner wall of the tank body and a channel hole; the outer edge is combined with the tank body; and the channel hole is used for forming a channel of the leakage slurry. The tank body of the degasser is set as a drawer type chamber capable of stirring level by level; and by combining the reasonable configuration of the slurry blocking component, the degasser enables the slurry to be stirred more sufficiently in the stirring chamber of the level so as to realize level-by-level sufficient stirring and level-by-level sufficient degassing.

Description

technical field [0001] The invention belongs to equipment for comprehensive mud logging and gas logging, and relates to a device for on-line degassing of mud proposed in oil exploration and drilling. Background technique [0002] The degassing device is an important part of the comprehensive mud logging and gas logging equipment. It shoulders the important task of whether the sample gas can better represent the real gas content of the formation, and directly affects the accuracy of oil and gas field evaluation. [0003] The industry's research on its improvement has never stopped. [0004] For example, the published Chinese patent "200410059804.5 A system for removing gas from mud and analyzing gas contained in mud" describes a physical and chemical analysis device for gas extracted online from mud proposed in oil exploration drilling, mentioning Degassing device. [0005] The industry generally believes that the degasser has generally experienced the first generation of d...

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Problems solved by technology

[0005] The industry generally believes that the degasser has generally experienced the first generation of degasser: that is, a square metal box is processed into a concave shape at the bottom, and the middle lead-out pipeline is connected to the suction pump. This device floats on the mud page and generally has no power source. , which belongs to a float type degasser, and its degassing efficiency is low

The second-generation degasser is an electric degasser. The motor drives the stirring rod to stir in the degassing barrel. The purpose is to break up the mud and separate the gas in the mud, and then pump the gas to the mud logging room through the sample gas pump. , the degassing efficiency has been improved, but due to the great influence of the change of the liquid level of the mud tank, the mud flow is unstable, and the slurry inlet of the degassing device does not have a good flow limiting measure, so that the mud is easily pumped to the recorder. The well room caused damage to the equipment. For this reason, it is often necessary to adjust the draft of the degasser by raising and lowering it, which affects the operating efficiency.

[0008] However, due to the structure of the known technology, the crushing degree of the mud is poor and unstable, and the mud easily forms a vortex in the stirring chamber, which directly affects the degassing efficiency; the existing degasser is not suitable for gas collection due to the structure. , or poor gas collection

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