Author: gnadmin

Recently one batch of vacuum degasser, decanter centrifuge, solids vacuum pump and shale shaker are ready for shipment for international drilling company.

The vacuum degasser model is GNZCQ270B horizontal type vacuum degasser, which is self suction type without needing a jetting pump. It has been widely used to separate gas from gas cut mud, so that it can protect the solids control equipments used in the next step, such as centrifugal pump ( desander desilter feeding pump). The vacuum degasser will be normally installed on the mud tank which is after primary shale shaker and before desander desilter or mud cleaner.
The features of GNZCQ series vacuum degasser are as below:
(1) water ring type vacuum pump provide safe and reliable operation.
(2) Suction capability of the vacuum pump plays 2 roles, 1 is to let the mud entering in, 1 is to let the gas out of the vacuum tank, it means, the working of the vacuum degasser do not need an extra jetting pump.
(3) When there is no gas cut mud, since the suction pipe is installed inserted into the mud tank and under the liquid, it can be used as high power mixer of the drilling mud.
(4) Belt pulley instead of gearbox for easier maintenance.
(5) Proper design of gas water separator, since the gas and water will not be discharged simultaneously, the exhaust pipe will be always unconstructed, the water can be circulated as water supply to the vacuum pump for less water consumption.

The solids vacuum pump can be used as spilled mud collection on the rig floor, or transfer pump of the drilling fluids, drilling cuttings and other high solids content materials from one place to another place. The rig air supply can be used as the vacuum pump air supply, it is a 100% air operated transfer pump without electricity.

This week GN Solids Control participate in 2023 CIPPE Beijing oil show with our lastest technology and equipments. We met with our domestic clients also international clients who is interested in GN technology and equipments. After the exhibition, some of the clients visit our facility to check our workshop and equipments.

What equipments we had showed at CIPPE 2023?
ViST vacuum shaker, GN updated version vacuum shaker with electric drived air compressor to supply air to the vacuum unit, a catch pan is installed under the last panel screen which is connected with air compressor. The features of GN vacuum shaker is pulse type negative pressure to provide better vacuum and avoid blocking the shaker screen.
Big Bowl decanter centrifuge can be used for high volume slurry cleaning, mud dewatering with chemical dosing unit, oil sludge separation system, low gravity solids separation from the drilling fluids and drilling waste treatment.

3 phase disc separator, it is used to separate oil water and solids from the oil sludge, to get the clean oil and water. It is normally used after 2 phase decanter centrifuge, to reduce the solids content and separate the big solids which is bigger than 0.5mm. GN designed oil sludge treatment system with proper arrangement of 3 phase disc separator with its flushing tank, operation water tank, solids discharge unit and feeding pump.

The 3 phase decanter centrifuge is a horizontal type 3 phase centrifuge to separate oil, water and solids. If the requirement of recovery oil and water is not in high level, we can use 3 phase decanter centrifuge instead of 2 phase decanter centrifuge and 3 phase disc separator.

Vacuum pump
Double deck shale shaker
Shaker screen
Screw conveyor
Vertical cuttings dryer

If you did not have a chance to visit CIPPE, welcome to visit GN solids control factories.

Recently 2 sets of mud cleaning unit are ready for shipment to trenchless drilling client. One set is GNMS-1000D mud cleaning unit used for pipe jacking company in Singapore, the other set is GNMS-500D mud cleaning unit used for HDD trenchless project in Africa.

GNMS-500D technical specification is as below:
Treating capacity is 120m3/h (528gpm), the separation cut point is 40 microns, the total power is 32.1KW, compact design for convenient transportation, inland shipping dimension is 3135x1920x2431mm, total weight is 3377kg.The main equipment including mud cleaner GNZY753E-Y1S, with vibration strength ≤7.1G(Adjustable), bottom screen area is 1.35m2, upper screen area is 0.875m2, with one piece of 10 inch desander cone, the desander feeding pump is GNSB5X4C-13J.

GNMS-1000D technical specification is as below:
Treating capacity is 240m3/h (1056gpm), the separation cut point is 40 microns, the total power is 49KW, compact design for convenient transportation, inland shipping dimension is 3720x2170x2528mm, total weight is 3733kg.The main equipment including mud cleaner GNZY705E-Y2S, with vibration strength ≤7.3G(Adjustable), bottom screen area is 2.6m2, upper screen area is 1.35m2, with two piece of 10 inch desander cone, the desander feeding pump GNSB6X5C-13J feed the slurry discharged from double deck shale shaker to desander cone.
The mud cleaning unit is used for drilling fluids recycling for construction slurry separation of pipe jacking machine and HDD rig trenchless project. If the client need to prepare for new drilling fluids, they can produce a mud storage tank with mud agitator and a jet mud mixer which combine with mixing hopper and mixing pump.
Except for the compact design mud cleaning unit, GN also design and produce high configuration mud recycling system, with different treating capacity 200gpm, 400gpm, 600gpm, 800gpm and 1000gpm, with multi function of mud cleaning, recycling, storage and mixing. If you need mud recycling system, pls contact with GN solids control.

Recently one unit of mud cleaning package equipment is ready for shipment to New Zealand. The system consists of coarse shaker separation unit, fine mesh shale shaker unit, desilter unit and decanter centrifuge unit with chemical dosing unit. It can be widely used for hydrovac waste cleaning treatment, construction slurry dewatering system.

The coarse shaker separation unit with coarse shaker tank, the slurry from vacuum truck are loading to catch hopper which with spray nozzles and big hole mesh then drop into the coarse shaker to separate the coarse solids, stone, mess. Agitators are installed on top of catch tank to avoid solids sedimentation. The submersible slurry pump transfer the treated slurry and feed to fine mesh shale shaker.

The fine mesh shale shaker separate the fine solids from the slurry and drop into shaker tank with mud agitator, the vertical pump feed the slurry to desilter cone, which can separate the solids bigger than 20 microns. The fluids is feed to decanter centrifuge which is installed on the telescopic skid, there is a fluids catching tank installed on the skid and under centrifuge to catch the treated fluids. A chemical dosing unit prepared for chemicals and feed to decanter centrifuge feed tube.

The hydrovac waste cleaning system has been widely used in North America and Australia, New Zealand. We can design customized slurry cleaning system according to client’s requirement. The decanter centrifuge used for construction slurry dewatering system is normally big bowl big volume decanter centrifuge, 30 inch bowl diameter, 131 inch bowl length, the max speed is 2650rpm with max G force 3000G, the typical speed is 2200rpm with typical G force 2412G. The max mechanical capacity is 285m3/h, typical capacity is 225m3/h, the dewatering capacity is 50m3/h, main motor is 160KW, back motor is 90KW, with VFD control panel.

Recently one unit of GNOST-02B Oil Sludge Treatment Package Equipment are shipped to Fujian Client, the treating capacity for oil sludge is 2m3/h.
The configuration of GNOST-02B Oil Sludge Treatment unit is as below:
Main equipments including GNZS752J shale shaker, GNLW224FT decanter centrifuge, GNSD-40 3 phase disc separator, chemical dosing unit, heating pre-mixing tank, feeding pump, etc. Mud tank skid with guardrail, walkway, stairs and frame, electric control system.

This is a compact structure oil sludge treatment unit which can be used for testing, especially for the client who wants to invest high capacity oil sludge treatment system but not sure about the treating capacity, they can use the testing unit firstly before made a decision, due to the compact design, it will influence the continuous working of the unit, we need to make changes in the design if continuous working is required.
The functions of each components:

1. Premixing tank and mixing tank with heatling lines, including stainless steel material tank, electric heating system, mud agitator, to collect fluids from shale shaker and feed to decanter centrifuge , or collect fluids from decanter centrifuge and feed to 3 phase disc centrifuge.
2. Shale shaker, to separate the coarse solids and reduce solids content, so the fluids meets the technical requirement to feed to the decanter centrifuge.
3. Decanter centrifuge, to separate fine solids from the fluids , the treated fluids meet the technical requirement before feeding to 3 phase disc separator
4. 3 phase Disc centrifuge, to separate the little solids, oil and water, to get the clean oil recovery and clean water recovery, the water can be reused for circulation or sent to waste water treatment plant.
5. Chemical dosing system, according to user’s chemical engineer’s testing, they need to add proper type chemical additives to each process to achieve expected result.