The desilter is the third step control equipment of the whole solid control system. Desilter function is to deal with the solid debris with diameter of 15-44um, and to ensure a proper treatment of the processed drilling mud in the next step.
Initial preparation of the desilter
Put the desilter base horizontally and use four pressing plates to fix the base on a suitable place of the tank. Take a note that the outlet of screen box should be 20-30mm out of the tank.
Connect the inlet and outlet holes by hose or steel tube. The inlet pipe needs to be fit with outlet pipe.
Loose four vibration bolts. When transport, the bolt need to be secure.
Check there is any bolts that are loose. Check the vibration rotating axis is moving smooth. If there is any fault noise, the problem should be solved at that time. After all the initial check that all things are function properly, the equipment can be starting to work.
Connect the belt with motor and turn on the power, check whether the rotating direction of motor is correct.
The operation of desilter
Start with the shale shaker first, then turn on the desilter. Check whether the exhaust pressure can match the requirements and check the results of separating, check whether there is any possible of leaking.
Check the rotating direction of motor is consistent toward to the arrowhead on the shield.
Check the pressure gage works properly in an allowed pressure range.
Adjust the bottom flow nuts to make the bottom flow jets shoot the mud out smoothly.
When stop the operation, the drilling fluid should be cleaned out to avoid solidification. Clean the shaker screen with water and check each part.
The maintenance of desilter
Check and confirm the connection and sealed parts.
Check the cyclone cylinder to see the jet situation and pressure.
Repair or change the damaged, leaking or abraded cyclone cylinder.
Check whether the jet nozzle is broken. Check the inside of the cyclone cylinder and if need, change the damaged parts.
Clean the feed head.
When stop using for period of the long time, every part that contains drilling fluid should be cleaned through, avoid stockpile of sand inside the equipment.
The lubricating grease should be injected into the vibration motor every 1500-2500 hours. The volume to be injected each time is 5-10ml.
When stop using, the shaker screen should be cleaned with water to avoid solidification to ensure max useful screen life.