Improved Structure of Drilling Fluid Shaker

Abstract

The invention discloses an improved structure of a drilling fluid vibrating screen. The improved structure comprises a screen box, a vibrating motor, tensioning springs and a blocking hood; the upper portion of one end of the screen box is provided with a feed opening, the other end of the screen box is provided with a discharge opening, a screen frame and a coarse screen are arranged in the screen box, a fine screen is arranged below the coarse screen, a concave trough is formed between the coarse screen and the fine scree and extends to the feed opening from the discharge opening, the concave trough is provided with through holes, and a fluid-phase material receiving plate is arranged in the concave trough and is parallel to the coarse screen; the improved structure further comprises double-headed bolts which pass through the through holes in the concave trough and penetrate through the fluid-phase material receiving plate, and multiple spring baffle devices are arranged on the screen frame at equal intervals. By means of the improved structure of the drilling fluid vibrating screen, at the early stage of exploiting, the velocity of passing through the screen of a fluid phase in a drilling fluid is increased, and the treatment capacity of the drilling fluid vibrating screen is improved; at the later stage of exploiting, even when the sizes of solid particles are decreased, screening can also be conducted on the drilling fluid through the screens, and the separation efficiency of the drilling fluid vibrating screen is improved.

Description

technical field [0001] The invention relates to the field of drilling fluid recovery, in particular to an improved structure of the drilling fluid vibrating screen. Background technique [0002] Drilling fluid is a general term for various circulating fluids used in the drilling process, and drilling fluid is also called drilling mud. During the drilling process, the drilling fluid can effectively cool and lubricate the drill bit, and can also balance the underlying pressure to avoid blowout and kick. In addition, the drilling fluid can also transmit power and take coring samples. According to different dispersion media, drilling fluids are mainly divided into three categories: water-based drilling fluids, oil-based drilling fluids and gas-based drilling fluids. [0003] During the drilling process, the drilling fluid enters the bottom layer through the drill pipe, and after completing its function, it is discharged together with the slag generated in the drilling. Because ...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is aimed at the shortcomings of the traditional drilling fluid shale shaker. The problem of low screening efficiency when large-volume solid particles in the drilling fluid in the early stage of drilling and small-volume solid particles in the later stage

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