Month: September 2022

One set of customized mud tank system is ready for shipment to Middle East. The ATEX certified motor and electric control system can be applied for offshore drilling rig solids control system. The mud tank system is composed of 1 ea shaker tank, 2 ea storage tank, 1 ea water tank, 1ea of pump skid and 1 set of electric control system.

The main equipments of shaker tank including 3 sets of linear motion shale shaker and 1 set of hydrocyclone assembly, 2 sets of mud agitator, 4 sets of mud gun. The linear motion shale shaker is a 4 panel screen shale shaker with 585x1165mm shaker screen. We can produce different API from API 20 to API 325 as per client’s requirement. The drilling fluids from well head flow to fluids distribution box and evenly flow to shale shaker for primary solids separation, the desander cone and desilter cone assembly installed on top of the 3rd shale shaker as the 2nd phase separation and 3rd phase separation equipments, the feeding pump are installed on the pump skid, and the suction and discharge pipeline are connected. The standard mud cleaner with compact footprint is without buffer box, when it is used as back up shale shaker, an extra buffer box will be added, and the hydrocyclone assembly frame will be installed on top of the shale shaker.

The 2ea mixing hopper , 2ea mixing pump, 2 ea centrifugal pump and a special designed collection hopper will be installed on a skid, the mixing pump can be also used as transfer pump, for longer working life, the pump housing and impeller are made of hard ductile iron alloy for better abrasion resistant capability, the mechanical seal to provide zero leakage and longer operation life. For more details, pls contact with GN solids control.

Mud agitator is drilling mud agitating and mixing equipment of solids control system. All the mud tank compartments except for sander trap should be agitated to avoid solids deposition at the tank bottom and maintain a consistent mixture throughout the surface system. The mud agitator use an electric motor to drive single or double impeller blades which flow the mud in a pattern throughout the mud tank. The mud agitator prevents settling enhances the efficiency of solids removal equipmnets, such as shale shaker, desander, desilter, decanter centrifuge, degasser, etc.

According to the mud weight, mud tank dimension, mud tank design ( round or square), mud agitator qty, desired turnover ratio ,the user will select proper size impeller, agitator qty, motor and even impeller qty ( single layer or double layer). If the agitator model and qty is not proper used, it will lead overheating and over current and lead over torque to damage the mud agitator. The main components of the mud agitator including electric motor ,gearbox, mounting plate, agitator shaft, impeller, and stabilizer, there are direct connection and coupler connection based on different requirement. Based on different type gearbox, there are helical bevel type gearbox and worm wheel type gearbox. Based on mud tank dimension and remained room, there are horizontal type mud agitator or vertical mud agitator. Based on different ambient temperature, the required gear oil is different. If the gearbox oil temperature exceeds the upper limit or the motor temperature exceed 95℃, and there is vibration and abnormal noise, the user should stop the agitator immediately for inspection.

GN produced mud agitator utilized heavy duty helical bevel gearbox, direct connection, horizontally installed, which is with compact size, reliable operation, low noise, good mixing performance, the explosion proof motor can be CNEX, ATEX or IEC EX standard to meet different explosion proof standard.

As a manufacturer of solids removal unit in China, GN produced solids control/ removal unit has been widely used for mineral engineering projects. More and more clients start to realize that the solids removal unit’s usage will take a lot of advantages to the users.

1. The Solids removal unit will reduce the water consumption and reduce the drilling cost significantly
2. The solids removal unit will reduce the wear on drill components and protect the drilling rig, it will extend the drilling rig service life effectively
3. The solids removal unit can reduce the drilling waste and lower the waste disposal cost and environmental management cost
   Anyway the investment on the solids removal unit will be another consideration compared with the direct cost savings and potential cost savings, it is not easy to clear the potential cost savings. The client may select to rent the solids removal unit for a short term project, for a long term mineral projects, to buy a solids removal unit is an economic way.
4. 
   GN Solids Removal Unit including fluids picking up pump ( it will be installed in the mud pit vertically to pick up drilling fluids from mud pit to shale shaker), shale shaker( to removal coarse solids and reduce solids content to let the drilling fluids suitable to be treated by decanter centrifugue), decanter centrifuge ( mechanical separation cut point is 5 microns) and feeding pump, mixing hopper, mixing pump and mud tank. The clean fluids treated by decanter centrifuge will be mixed with chemicals and pump back to drilling rig. The electric control system can control all the motors and starter of all the equipments. A generator can be installed on the solids removal unit skid as power supply.
   For more information of the solids removal unit, pls contact with GN solids engineer.