Internal composition of the baffle in the mud tank

An important consideration when constructing a solid control system mud tank is how to position the internal piping system of the tank. If the pipeline is not properly positioned, it is impossible to make the solid control system and the solid control equipment in the system work effectively. For any type of mud tank, the best advice for installing pipelines is to rely on common sense and experience. Think carefully about the effect of pipelines on the flow pattern in the tank. The flow path of mud should not be obstructed by pipes or structural support components. .

Baffle of round mud tank

For a round or cylindrical mud tank, the baffle is very important. The baffle converts the rotary motion into a fluid state to facilitate the suspension of particles and maintain the homogeneity of the liquid. At the same time, the baffle also helps to prevent the formation of vortices. In both cases, the baffle can improve the flow of the slurry. The width of the baffle of the mud tank should be in the range of 1/12 to 1/10 of the tank diameter and 90 degrees. The shorter the distance between the baffle and the wall of the mud tank, the higher the efficiency. The distance between the baffle and the tank wall is preferably 1/72 to 1/60 of the diameter.

Baffle of square mud tank

The drilling fluid in a properly designed square mud tank has similar excellent suspension properties as the blocked mud in a circulating mud tank. The corners of the tanks in square and rectangular mud tanks can direct the fluid to move in the same way as baffles in circular tanks. However, as the ratio of the length and width of a square mud tank increases, the chance of a blank space at the far end of the mud tank also increases. Strategically installed baffles at the midpoint of the long tank will neutralize this negative effect. When the ratio exceeds 1.5: 1, it is recommended to use two or more mud agitators.
Install baffles on each impeller to increase agitation and prevent air turbulence. A typical steel disc baffle is 1/2 to 3/4 inches thick, 12 inches wide and extends from the bottom of the mud tank to at least 6 inches above the top of the stirring blade (about 1 to 2 cm thick, 30 cm wide and 15 cm upwards). Four baffles are installed at 90 degrees to the axis of the mixer, and the four corners of the tank are connected to the mixing shaft (Figure 1). For rectangular tanks with two or more mixers , the mud tank is divided into imaginary square tanks and a baffle pointing to each corner.

Mud tank baffle

figure 1