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Mud Tanks in Solids Control System

What is mud tank?

A mud tank is an open-top container, typically made of steel, to store drilling fluid on a drilling rig. It is also called mud pit, because it used to be nothing more than pits dug out of the earth. The tanks are generally open-top and have walkways on top to allow a worker to traverse and inspect the level of fluid in the tanks. The walkways also allow access to other equipment mounted on top. Recently, offshore drilling rigs have closed-in tanks for safety. The mud tank plays a critical role in mechanically removing destructive solids and sediment from costly land and offshore drilling systems.

A drilling rig normally has two tanks. A tank is sectioned off into compartments. A compartment may include a settling tank, sometimes called a sand trap, to allow sand and other solids in the drilling fluid to precipitate before it flows into the next compartment. Other compartments may have agitators, which are large fan blades stirring the fluid to prevent its contents from precipitating.

Mud tanks for solids control

Mud tanks are the base of solids control equipment. Mud tanks for solids control systems are divided into Square tanks and Cone-shaped tanks according to the shape of the tank bottom. The body of the tank is made by welding the steel plate and section, using the smooth cone-shape structure or the corrugated structure. The mud tank surface and passages are made of slip resistant steel plate and expanded steel plate. The mud tanks are made of the side steel pipe. All of the structure can be folded without barrier and pegged reliably. The surface of the tank is equipped with a water pipeline for cleaning the surface and equipment on the tank, it uses soaked zinc processing for the expanded steel plate. The ladder is made of channel steel to take responsibility the body, the foot board is made of expanded steel plate. The two-sided guard rail are installed the safe suspension hook. The mud tank is designed the standard shanty to prevent the sand and the rain. The pipeline is installed in the tank to preserve the warm air heat.

Mud tank quantity depends on mud process capacity requirements. Especially for mud storage, suitable for mud pump, drilling rig, etc.

Advantage  Mud Tanks

mud tank professional manufacturer. Our tanks are widely used in oil and gas drilling, HDD, CSM exploration, slurry separation, etc. They are high anti-corrosive, anti-rust, long usable life.

According to tank base shape there are square and cylinder tank. Tanks main bodies are welded together with steel plate and steel section. Tank top and walk way is made of steel grid and antiskid plate. Guard rail material is square pipe, rails are foldable type. Stairs are made of antiskid plate. Two sides rail have pins for steady and safe walk. Mud tank in whole mud system will have special device to clean mud tank and equipments. For oil drilling mud system we’ll provide standard sand/rain prevention canopy also heating pipeline in the tank.

Mud tank design for solids control system is very important. The surface pits that comprise the active circulating systems should be designed to contain enough usable mud to maintain mud properties and to fill the hole during a wet trip at the rig’s maximum rated depth. Usable mud is defined as the mud volume which can be pumped before suction is lost. For example, a typical 10,000 ft well will normally require a minimum active system tank volume of 500 bbl;Tank Shape Design;To maximise solids suspension in drilling mud and usable volume, the best tank shape is round with a conical bottom. Next best is a square or rectangular shape with a v-bottom. The least preferred shape is the square or rectangular box with a flat bottom. The ideal tank depth is equal to the width or diameter of the tank. This design provides sufficient pump suction head and is best for complete stirring.;Tank Compartment Equallsation;Equalisation height between compartments will depend upon the duty of the compartment. As a rule, an adjustable equaliser is needed only between the solids removal section and the addition suction section. High equalisation between the solids removal and addition suction sections also increases the ability to detect volume changes due to influx or losses to formation. Because the volume of the solids removal section remains constant, any volume change is apparent as a liquid level change in the addition suction section only. This increases the sensitivity to volume fluctuations since the change in fluid level will be more pronounced per unit volume.;A tank design will including sand trap, equipment arrangments, etc. A tank design is very important for a complete line solids control system. 

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