Well drilling fluids circulation system for oil and gas solids control

Drilling fluid circulation system is the drilling mud solids control system for oil and gas well drilling. From shale shaker, desander desilter, to centrifuge decanter. Including all mud tanks, agitators, mud gun ,mixing pump, and so on

For complete mud system, there are 5 phase purification equipment. Drilling mud will be pumped from shaker tank to desander, and then to desilter, decanter centrifuge. The mud tanks including active tank, reserve tank, mixing tank, and so on.

All equipment are shaker, mud cleaner, centrifuge, degasser, mixer, shearing pump, slurry pump, tank, poor boy, ignition, hopper pump, and so on.

Main Specification Of drilling fluids circulation System
Rig	350-450HP	550-650HP(ZJ20)	750HP(ZJ30)	1000HP(ZJ40)	1500HP(ZJ50)	1500HP(ZJ50)
Mud Flow（m3/h)	90	120	180	240	240	300
Shaker Qty	1	1	2	2	2	3
Mud Cleaner	1	1	1	1	1	1
Centrifuge	0	0	1	1-2	2	2
Separation Size	20 micron	7 micron	7 micron	2 micron	2 micron	2 micron
Mud Tank Qty	2	3	3	5	6	7
Mud Tank Size	Customized
Pipeline Arrange	Customized

Working Procedure Of well drilling fluids system
1. Drilling mud from drill hole will feeding into shale shaker buffer box by pipeline, the shaker can install shaker screen mesh API 35 to API 120 to separate larger drilling cuttings. Fluids part will drop into sand trap through mesh screen.
2. Mud from sand trap will over flow into next compartment and vacuum degasser will suction mud to degasser and treated mud will overflow into degasser compartment.
3. Desander feeding pump will pick up mud from degasser compartment and feed into desander cyclone for 47 – 76 micron separation. Solids part will drop from desander nozzle and fluids over flow into desander compartment.
4. Another will pick up mud from desander compartment and feed desilter cyclone, solids part drop through desilter nozzle and fluids over flow into desilter compartment.
5. A slurry pump or screw pump then pick up mud from desilter compartment into decanter centrifuge for 2 – 7 micron separate and clean mud flow into centrifuge compartment.
6. All tank compartments after desilter compartment we name as clean mud, mixing pump can suction or discharge to any of the clean mud tank for mud transfer or new mud mixing.
7. Mud pump suction line arrange in all clean mud tank with valve.