500GPM is the most popular capacity mud system for HDD, CBM and other trenchless activities. GN Solids Control dispatched a 500GPM mud system to clients.
Firstly, remove the shaker box locking device of shale shaker GNZS703E-HB and mud cleaner GNZJ703E-D8N (Please refer shaker user manual and mud cleaner user manual for detailed operation). Then have a trial operation to shale shaker and mud cleaner.
All valves for pipelines are on off state after dispatch from the manufacturer’s factory. Before start up the system, operator should open values first and ensure all of them unblocked.
Then, start up shale shaker GNZS703E-HB and mud cleaner GNZJ703E-D8N. After the shaker and mud cleaner is running stably, start up submersible slurry pump to feed for the shale shaker. It is the first stage separation. When the mud reaches to three quarters of the 1# compartment underneath shale shaker (about 1 minute), start up the desilter feeding pump (1# sand pump GNSB6x5A-12J). Mud will be transferred to the mud cleaner 4’’ desilter cyclone from the 1﹟compartment, at a pressure of 0.25～0.40MPa. It is the
second stage separation. The clean mud from 4’’ desilter cone flow to the #2 compartment. When the mud height reaches to the overflow pipeline, it will overflow to #3 compartment. The user-owned mud pump is connected to the suction line of the 500GPM mud system tank and transfer qualified mud to wellhead. The clean mud can also directly flow to outside storage tank through the desilter output pipe.
When needed, users can start up the mixing pump (2# sand pump GNSB6x5A-12J) and feed to the mixing hopper GNSLS35A. The weighted mud from mixing hopper flows to 3# compartment. The suction port and discharge port of mixing pump are equipped with T-pipe, it can also mixing/discharge mud from/to outside tanks.
Pay attention to the performance of the desilter cyclone. Ensure it works properly. If not, adjust the cyclone adjustment cap for a better performance. Pay attention to the figures on the pressure gauge of desilter cyclone, ensure it is under the scope of the working pressure. The working pressure of 4’’ desilter cyclone is 0.25～0.40MPa.