Solid phase system is short for solid control system. It is the important device when drilling rig drill well to store, allocate, circulating and purification drilling fluid. Usually it is made of drilling fluid tank, shale shaker, vacuum degasser, desander, deserter and centrifuge, the five levels purification equipment.

Solid control system is also matched drilling fluid supply device, aggravating hopper, aggravating pump, desander pump, desilter pump, shear pump, provide pump, base oil pump, agitator and auxiliary equipment. Besides, all matched pavement, ladder, railing and safety device. It can efficiency eliminate the harmful solid phase which the particle size is bigger than 5-15um and retain the useful solid phase to provide the quality drilling fluid for drilling working.

In the design requirements of solid control system, the efficiency volume of mud tank is 75% of total volume. The design requirements should reach this:

Mud tank should accommodate the maximum drilling fluid circulating volume in drilling process.

The adjustment strength of mud tank should meet the requirements of hoisting, transportation and using density is 2.5g

Each bin in tank should accord the technology process requirements to set the communicating pipe of overflow mouth and bottom valve.

All seal parts should meet the requirements of oil resistance, acid-base resistance and all kinds of drilling fluid.

In solid control system design requirements need equipped with related mud processing equipment.  

Drilling fluid shale shaker: the treating capacity should be 100%-125% of drilling pump maximum displacement.

Vacuum degasser: the treating capacity should be 100%-125% of drilling pump maximum displacement.

Desander: the treating capacity should be 100%-125% of drilling pump maximum displacement. The matched centrifugal pump and motor should meet the requirements.

Desilter; the treating capacity should be 100%-125% of drilling pump maximum displacement. The matched centrifugal pump and motor should meet the requirements.

Drilling fluid centrifuge: the treating capacity should be 5%-10% of drilling maximum displacement.

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