What is drilling mud recycling tank?

What is drilling mud recycling tank?

Mud tank also calld mud recycling tank as it provides the room for drilling mud recycling system. In other words, It is the base of solids control equipments, and also the carrier of drilling fluids. Solids control equipments that are mounted on the top of mud tanks include the followings:shale shaker    desander  desilter  decanter centrifuge  centrifuge centrifugal pump   mud cleaner   vacuum degasser   Hydrocyclone cone    mud agitator    flare igniter     submersible slurry pump  mud tank

A mud tank is an open-top container, typically made of square steel tube and steel plate, to store drilling fluid on a drilling rig. They are also called mud pits, because they used to be nothing more than pits dug out of the earth.

Drilling fluids flow into the shale shaker   directly after it returns to the surface of the well, and the solids that are removed by the screen would be dischanged out of the tank, and the drilling fluids with smaller solids would flow through the screen into mud tank for further purification. A centrifugal pump would sucks the shaker-treated fluids up to the desilter or mud cleaner for further purification. And vertical slurry pump is used to pump the drilling fluids up to the centrifuge,and mud pump would pump the drilling fluids from mud tank into the borehole after it is treated by centrifuge. And the drilling mud circulation system would continues.

The number of the mud tanks that are needed on the drilling rig depends on the depth of the well, and also the mud demands of drilling. Normally the shale shaker and vacuum degasser and desander are mounted together on the same mud tank as the first tank at the oilfield, while desilter and centrifuge on the second tank. and also the drilling rig would has other different tank as reserve tank,emergency tank, etc.

Mud tanks is an important part in the solids control system. Based on functions, mud tank includes metering tank, circulating tank, chemical tank, aggravating tank, precipitating tank, storing tank, etc.