Solids control system is the indispensable sector in oil & gas drilling oeration, consists of drilling fluids circulating tank, drilling fluids purification equipment where shale shaker, vacuum degasser, desander, desilter, decanter centrifuge, centrifugal pump, mud agitator, jet mud mixer and mud gun are involved and electric control equipment. Cuttings recovery and waste fluids treatment equipment can also be coupled for the environmental sensitive areas.

The decanter centrifuge has been widely applied in drilling fluids system. Due to the high rotation speed provided by decanter centrifuge, if any abnormal situation happed in use, stop running and check for solution immediately. Followings are some common problems and corresponding solutions.
 

Problem 1: excessive vibration of decanter centrifuge.

Reasons and solutions:

1. The solids particles settled in bowl have not been cleaned thoroughly--clean it.

2. Defective shock absorber--change it for new one.
 

KOSUN Decanter Centrifuge
 

Problem 2: overtemperature of bearings. (above 75℃)

Reasons and solutions:

1. Lack of lubricating oil--oiling the bearings.

2. Wear of bearings--change the damaged bearings.
 

Problem 3: the bowl doesn’t work when the main motor is activated.

Reasons and solutions:

Main motor overload for excessive solids particles set in--clean the bowl and adjust the grout intake.
 

Problem 4: abnormal noise is heard from bowl.

Reasons and solutions:

1. unsuitable usage of lubricating oil, such as improper oil type or volume--check and adopt suitable oil.

2. bearings damaged--change for new ones.
 

Problem 5: clean mud flows out of discharge outlet.

Reasons and solutions:

Excessive slurry supply--adjust slurry inlet valve.