Screening and installation of mud tank agitators
The performance of mud tank agitators must be properly designed and installed correctly. Incorrect parameter design and incorrect installation will result in poor performance of mud tank agitators.
1. Design parameters of mud tank agitators
To properly design mud tank agitators, you must understand the following parameters:
(1) The size of the drilling fluid tank and case;
(2) The shape of the chassis;
(3) Chassis performance (solid phase removal, testing, absorption, storage, and small slugs/segments);
(4) The expected maximum drilling fluid density.
Once this information is determined, the design will focus on the size and model of the impeller of the mud tank agitators and the required power. For mud tank agitators, there are two basic types of flow patterns: radial flow and axial flow.
The radial flow impeller of mud tank agitators, like those used in the drilling industry, is typically made of low-carbon steel (the use of stainless steel is less, but it can be used under certain circumstances). Rectangle blades (usually 3 or 4 blades per agitator impeller) are installed vertically on the shaft of the machine.
Regardless of whether the mud tank agitators are radial, axial or wave surface impellers, the installation position and parameter design of the impeller are extremely important. If all the design and installation processes are correct, but the position of the agitator impeller is incorrect, the result will be mud The performance of tank agitators has been exhausted. Therefore, be sure to carefully read the design parameters and installation location in the manual of mud tank agitators.
2. The influence of the shape of the mud tank on the performance of mud tank agitators
It works best when mud tank agitators are installed on a symmetrical round or square mud tank (viewed from the top). The circular mud tank is ideal for many reasons, the most important being that there are fewer dead spots where solid particles can settle.
The circular mud tank is installed together with the central drainage pipe or cleaning device (mud gun). The tank is easier to clean and requires less washing liquid than a rectangular mud tank or a square mud tank. Due to the symmetrical shape, the mixing of the drilling fluid mud is the most thorough and the mixing effect is the best. However, round mud tanks also have some disadvantages. They cannot use space more efficiently. Compared with rectangular or square tanks, the same volume takes up more space. The circular tank needs a baffle to prevent the tank itself from rotating and promote liquid suspension, which is difficult to install and has a high cost.
3. The influence of the size of mud tank body and drilling fluid tank on the performance of mud tank agitators
The proper size design of mud tank agitators is based on mixing a large amount of liquid. Therefore, it is necessary to know the size of the mud tank. In most cases, except for grit tanks, all other tanks require mud tank agitators. Some solids control systems convert grit tanks into active drilling fluid tanks, which requires even more drilling fluid mud tank agitators. Considering that many systems have installed drilling fluid vibrating screens on mud tanks, and there is little or no outflow space for mud tank agitators, problems will arise. If such a problem occurs in the design of the mud tank body, it is necessary to redesign the mud tank agitators to delimit the space while not obstructing
The normal operation of solids control equipment such as drilling fluid centrifuges. Of course, a mud gun can also be used.