Author: gnadmin

Recently 2 units of desander unit are ready for shipment to HDD engineering company for HDD drilling mud treatment. The desander machine is also called economic configuration HDD mud cleaning unit, compare with high configuration HDD mud recycling unit, the desander unit is with compact footprint, economic price and flexible installation.

Advantages:

1. Small area required, especially suitable for Piling, HDD and TBM works which is close to city center and space is very limited.
2. Less budget, if the user has its own storage tank and mixing unit, they do not need to buy a complete HDD mud cleaning unit, they only need to buy a desander unit to connect with their storage tank and mixing unit, they pay less money to finish their projects.
3. Flexible connection, as above, the customer do not always need to buy complete HDD mud recycling unit, the desander unit can be flexibly installed for different projects if only they have storage tank and mixing unit, which can be made locally to save freight cost and import tax.
4. 
   But compared with complete HDD mud recycling unit, the desander unit also has its disadvantages, for example, even though the treating capacity is same, but the treating performance is lower, for big HDD machine, the user must use complete HDD mud recycling unit to protect the HDD machine, if the recycling unit working efficiency is not enough, the working life of HDD machine will be influenced. GNMS-500D desander unit with desander cone only, so the separation cut point is 45 microns, if the project required separation cut point of the slurry is 20 microns, the user should add desilter cone and its centrifugal pump, which is included in the complete HDD mud recycling unit.
   If you need a mud treatment solution for your HDD project, pls contact with GN solids control.

GN drilling mud dewatering unit and solidification unit are successfully used in Africa jobsite.

The drilling mud dewatering unit is ideal equipment to treat the water based drilling mud, it consists of VFD decanter centrifuge, chemical dosing unit, centrifuge feeding pump and fluids collection tank, all of the equipments are installed inside the container. By adding proper chemicals, most of the ultra fine solids are separated out from the fluids and collect in the tank, the solids are separated out and collected by cuttings box and screw conveyor to transfer to the big hopper of the solidification unit. The decanter centrifuge bowl is made of duplex stainless steel 2205 or 2304, the other bowl components are made of SS316L, the screw propeller is made of stainless steel material, and it is protected by tungsten carbide tiles, the open type propeller design will increase the treating efficiency.

Solidification unit is the equipments to solidify materials so that the treated materials can be moved or landfilled without leakage to meet environmental protection standard. The discharged cuttings are collected in the big collection hopper and transferred by the bottom screw conveyor, the solidification materials are storage into 2 box, one is with absorbents, the other one is with cement, each box with its own transfer conveyor, the cuttings are mixed with the absorbents and cement in the shear mixer automatically.
If the user use the cuttings solidification unit directly, the consumption of the absorber and cements will be very huge, which makes the treatment cost not competitive. The drilling mud dewatering unit will reduce the moisture of the drilling mud effectively and the cuttings solidification unit can use less volume chemicals, and the discharged fluids can be reused or sent to third party water treatment facility for further treatment.
For more information, pls contact with GN solids sales.

Recently one set of oil sludge treatment plant are finished commissioning for our customer in China. It is our standard designed oil sludge treatment system.
The technical configuration is as below:

1) Pre-mixing tank modular: the mud agitator are installed on the mixing tank, the received oil sludge adding proper chemicals and mixing them evenly. The submersible slurry pump transfer the free oil sludge to coarse solids separation modular.
2) Coarse solids separation modular, the high G drying shaker separate the big solids from the oil sludge and reduce the solids content. So that the fluids will be safe to be transferred to decanter centrifuge.

3) 3 phase separation modular, the screw pump feed the fluids to decanter centrifuge with chemical dosing unit, most of the fine solids below 5 microns will be separated out. The fluids are dropped into the catching tank, the pump transfer the fluids to disc centrifuge, which will separate the oil and water, the oil flow to oil buffer tank and water is storage in water buffer tank. The water can be reused in the treatment system, the oil can be recovered. The washing tank is installed to wash the disc centrifuge to avoid blocking. All of the electric control system are explosion proof standard.

The proof cover are above the complete oil sludge treatment plant.
Before order, we encourage client to send the oil sludge sample to GN solids engineer and make a lab test to confirm if the chemicals are proper for the oil sludge or not, the customer will order until the testing result is good. After the whole system are shipped to customer’s jobsite, our engineer will come as per request for first time commissioning and training.
Before design a customized solution of oil sludge treatment system, we will require to fill in the question list to know the treated material better.

Recently one unit of mud mixing tank and 8 sets of mixing pump are shipped to engineering company. The mud mixing tank including 2 round tank with transfer pump, electric control panel with skid, pipelines, valves. The mixing pump and mixing hopper are installed on the skid with pipelines. It is an independent part of mud mixing tank. The mud agitator are installed on top of the mud mixing tank for better agitating and mixing of the chemicals with the drilling fluids.

GN centrifugal pump is interchangeable with world famous brand centrifugal pump, including the bare pump and pump parts. The impeller and pump casing are made of ductile hard iron for better wear resistance. The centrifugal pump can be used as trip pump, mixing pump, super charging pump, transfer pump, feeding pump, etc.
We can design customized mud mixing system according to client’s requirement, normally we design square shape mud tank, the jet mud mixer are connected with mud mixing tank as independent part. Except for mud mixing system, we also produce and design mud recycling system. According to different treating capacity, we have option for 200gpm, 400gpm, 600gpm, 800gpm, 1000gpm mud recycling system. We have 2 phase cleaning, 3 phase cleaning system for mud mixing system, 2 phase cleaning including shale shaker and desilter cone with mud mixing unit, 3 phase cleaning system including shale shaker, desander cone and desilter cone with mud mixing unit.

The mud agitator motor from 3KW to 22KW to suit for different size mud mixing tank, including GNJBQ030-D, GNJBQ055-D, GNJBQ075-DD, GNJBQ110-DD, GNJBQ150-DD, GNJBQ220-DD. The jet mud mixer including mud mixing hopper with different centrifugal pump, we can also install the mud mixing hopper on top of mud tank and the mixing pump installed on the tank skid or the mixing hopper and mixing pump both on the tank skid.

Recently one set of vertical cuttings dryer and decanter centrifuge are ready for shipment to international drilling company. The standard oil based drilling cuttings treatment system including vertical cuttings dryer GNCD930F and decanter centrifuge GNLW363C-VFD, with flushing pump, centrifuge feeding pump, telescopic skid, fluids collection tank, screw conveyor system, waste container, etc.

The F version vertical cuttings dryer is the lastest version vertical cuttings dryer, It is the ideal equipment for oil based drilling waste management system, the working principal is normally as below:
The screw conveyor collect the drilling cuttings from solids control equipments, such as shale shaker, desander, desilter, another screw conveyor which is installed slantly, to transfer the cuttings to vertical cuttings dryer feeding port. The fluids flow to the intermediate tank and the submersible slurry pump or screw pump will transfer the fluids to decanter centrifuge to separate fine solids. The solids discharged from vertical cuttings dryer with oil on the cuttings below 5%, it can be landfilled for disposal or to be sent to further treatment TDU. The fluids treated by decanter centrifuge can be recovered and back to solids control system storage tank, it can be used to prepare for new drilling fluids or sent to third party waste water treatment facility to get clear water.

To treat water based mud drilling waste, we need to use high G drying shaker instead of vertical cuttings dryer, the G force is up to 8.0 G to get drying cuttings, the fluids will be feed to decanter centrifuge, the VFD control panel can control 3 motors frequency and control the bowl speed, screw conveyor speed, pump speed ( to adjust the feeding flow rate). All of the 3 inverters are made from world famous brand electrical components for easy outsourcing locally. We can provide CNEX, ATEX, IEC EX explosion proof standard for option.