Solids Control Equipments

The largest size of Liquid Mud Plant that GN Solids Control has constructed is 35,500 bbls. It is composed of NO. 75 mud tanks. GN Solids Control built  a small liquid mud plant for the client first. They are happy with the performance.

Later on, this year, the client order another big size liquid mud plant with totally 35,500 BBL storage capacity. The 35,500 BBL liquid mud plant include the solids control tank, mixing tank, Brine storage tank, WBM storage tank and OBM storage tank.

The solids control tank and mixing tanks are horizontal tank. The tank size is the same with 40ft container. The lifting is utilizing standard container lifting corners. All storage tanks are vertical type to minimize the footprint.

The solids control tank includes solids control equipment shale shaker and a dual decanter centrifuge package.
The shale shaker model is GNZS594F. It is GN latest design shaker model. It is a 4-panel single deck shale shaker. The shaker screens are complied with API RP13C standard and made from composite material frame.

The dual centrifuge package includes No. 2 high speed decanter centrifuge, the centrifuge model is GNLW363C. It is 14inch bowl size decanter centrifuge with fixed speed control. Clients can choose different sizes of pulley and belt to get another fixed speed. Besides fixed decanted centrifuge, GN Solids Control can offer VFD control and FHD control for GNLW363C centrifuge.

There are 2 mixing tank in the big liquid mud plant. Each mixing tank is composed of No. 2 shearing and mixing hopper, No. 2 mixing pump and No. 2 mud agitators.

Unlike other systems, submersible slurry pump is widely used in the liquid mud plant. Normally GN Solids Control use screw pump to feed for decanter centrifuge. But in this liquid mud plant, the client requests to use submersible slurry pump to feed for the dual centrifuge package.

The client does not use centrifugal pumps for mud mixing but they request submersible slurry pump as well.
Centrifugal pumps are used as transfer pump in the liquid mud plant.

GN Solids Control is a specialist to manufacture full line solids control equipment, drilling waste management, and various sizes replacement shaker screens. In order to offer clients better support, GN Solids Control is flexible to offer customized equipment and solutions to meet clients request.

Recently, GN Solids Control made a customized drilling mud cleaner and mud gas separator for a drilling company. The equipment are customized color and mud customized design.

The capacity of the drilling mud cleaner is 1500GPM. It is a 3-in-1 combo type shale shaker, which is powered by 2 vibration motors. The motor brand can be Italy Oli or U.S. Martin. The drilling mud cleaner is combined by a under flow shale shaker, no. 3 desander cones and no. 12 desilter cones. The hydra cyclone assembly can be removed and the combo type shale shaker as a single deck shale shaker. The standard color of GN equipment is green, color code RAL 6024. For this project, it is customized gray color per client’s request.

Mud gas separator, which is also called as poor boy degasser, it is fully customized per the order. There are HSE standard ladders with guardrails all along the mud gas separator tank body. For easy movement and easy transportation, there are lifting frame along the mud gas separator. In this case, it can be easily lay down on the ground.

Besides drilling mud cleaner and mud gas separation, GN Solids Control can also make full line solids control equipment: shale shaker, desander, desilter, decanter centrifuge, jet mud mixer, mixing hopper, shearing and mixing hopper, centrifugal pump, screw pump, submersible slurry pump,etc…

And GN Solids Control is capable to make full line drilling cuttings treatment equipment: big bowl decanter centrifuge, vertical cuttings dryer, high G drying shaker, screw conveyor, drilling cuttings solidification unit, dewatering unit, etc…

Plus, GN Solids Control can make various size oil sludge separation equipment, and contaminated soil washing system.

If clients have any questions about GN equipment. Welcome to contact GN Solids Control freely.

Some sets of drilling mud vacuum degasser and centrifugal pumps are ready for shipment last week. The equipment will be shipped to an Indonesia client to service at their drilling rig mud systems.

GN Solids Control makes 2 types of drilling mud degasser for oil and gas solids control system: centrifugal degasser and vacuum degasser. All degassers in this project is vacuum type degasser model code GNZCQ270B. It is a 1200GPM capacity drilling mud vacuum degasser. Besides 1200GPM vacuum degasser, GN Solids Control has another vacuum degasser model for 1600GPM to service for big size deep drilling rigs.

ZCQ series Vacuum Degasser is a special-purpose solids control equipment for the treatment of gas in the drilling fluids. It can get rid of various gas of invasive drilling quickly. Vacuum degasser is very important for returning mud gravity, stabilizing mud viscosity and reducing drilling cost. Also, at the same time vacuum degasser can be used as a heavy-power agitator and supported applicable to all types of mud circulation purification system. The vacuum degasser design of the structure is scientific and rational. So it is able to achieve an effective gas-liquid separation, filter out impurities and to ensure that the exhaust pipe is always smooth.

Some centrifugal pumps are included in the shipment. Centrifugal pump is the most popular transfer device in drilling mud treatment system. It can be used as water pump to transfer water in water tanks. It can be used a trip pump at trip tanks. It can be used as feed pump for desander and desilter. It can be used as supercharging pump for triple mud pumps. In the mixing system, centrifugal pump can be used as mixing pump, as well as transfer pump to transfer mud between tanks and different tank compartments.

Besides vacuum degasser and centrifugal pump, GN Solids Control is also capable to make full line drilling mud solids control separation equipment, like shale shaker, mud cleaner, desander, desilter, decanter centrifuge, …. and different type of drilling mud processing equipment, like high G drying shale shaker, vertical cuttings dryer, screw conveyor auger, dewatering centrifuge, solidification unit, etc…

 

GNSB Series Centrifugal pump is a very common device used at drilling mud solids control system. GNSB Series Centrifugal pump can be used for oil field drilling mud system, HDD and CBM drilling mud recycling system, piling and micro tunneling desanding plant. GN Solids Control is a professional manufacturer of centrifugal pump in China.

GN Solids Control makes and supply centrifugal pump for solids control system. There is a wide range of applications of centrifugal pump in various applications drilling mud system. Below are some of the applications we normal use.

1. GNSB Series Centrifugal pump can be used as trip pump in the trip tank of the oil and gas drilling mud system. Trip tank is normally the first tank compartment inside drilling mud solids control system. The tank volume of trip tank is not big. It can be a separate smaller size tank other other tanks in the solids control system. It can also a compartment divided from shale shaker tank. Centrifugal pump size 3×2 or 4×3 are mostly used as trip tank trip pump.

2. GNSB Series Centrifugal pump can be used as feed pump for desander, desilter, mud cleaner. The pump transfer capacity should be matching the handling capacity of desander, desilter and mud cleaner. It can be a little big higher than the separation equipment, but it cannot be too much high. And the centrifugal pump transfer capacity cannot be lower than the separation equipment.

3. GNSB Series Centrifugal pump can be used as mixing pump of jet mud mixer and mixing unit. While add a T-pipe at the outlet of the mixing pump, the same pump can also be used as transfer pump.

4. GNSB Series Centrifugal pump can be used as transfer pump to transfer drilling mud or other slurries from one tank to another, or from one location to another.

5. GNSB Series Centrifugal pump can be used as suction or supercharging pump for drilling rig mud pump.

All GN model centrifugal pump use tungsten carbide mechanical seal, with international famous brand Bearing. And spare parts interchangeable with most of the international Brand pump which helps customer to source spare parts easily. Open impeller design that lowers axial thrust loads, and make it easier for installation, repair and maintenance.

 

GN Solids Control is a professional manufacturer to make different sizes Solids Removal Variable Speed Centrifuge includes stand, feed pump and connecting hoses, and other processing equipment and accessory processing equipment before and after decanter centrifuge.

GN Solids Control makes Variable speed from 0 up to 4,000 RPM per different models. GN Solids Control is capacity to make both VFD control decanter centrifuge and full hydraulic drive (FHD) decanter centrifuge per meet clients’ request.
GN Solids Control brand decanter centrifuge is designed with high G-force to get a better separation performance.

GN Solids Control has big bowl decanter centrifuge vary from 18 inch to 22 inch, and max. to 30 inch for big fluid processing rate. In the world, few companies have the capability to make big bowl decanter centrifuge up to 30 inch. GN Solids Control is one of them who have the abilities.
GNLW553 VFD decanter centrifuge is a 22 inch bowl decanter.
GNLW453 VFD decanter centrifuge is a 18 inch decanter.
GNLW363 VFD decanter centrifuge is a 14 inch decanter.
Roughly, for the same conditions, 1 set 22inch decanter = 2 x 14 inch decanter centrifuge.

And 1 set 18 inch decanter = 1.4 x 14 inch decanter. The operators cannot expect to use an 18 inch decanter centrifuge to replace 2 x 14 inch decanter or to replace a 22 inch decanter.

GN Solids Control 14 inch, 18 inch and 22 inch decanter centrifuge can all be used for heavy mud solids control. And also some clients want to use the decanter centrifuge for different applications like for barite recovery, HGS (high gravity solids), LGS (low gravity solids), waste management, and dewatering treatment, or other different applications, the centrifuge features are not all the same. When GN Solids Control makes the design for standard models, GN Solids Control need to balance the performance for all the situations. If clients have fixed applications with the centrifuge, suggest clients to share the information to GN Solids Control sales engineer before order to get and best solution to suit for the projects and maximized the separation performance.

 

GNLW363 FHD centrifuge is a Full Hydraulic Drive decanter centrifuge. It is designed to remove low specific gravity solids from slurries. After the FHD centrifuge separation, the solids are removed and the liquid is returned for recirculation. Like in the drilling mud system, the recovered slurry is drilling fluids, it can be reused in drilling mud system, in waste water treatment system, the recovered slurry is water, which can be reused in the waste water treatment plant. And in some cases, like in the barite recovery treatment, the solids are returned to the active system and the liquid is discarded, or goes to further treatment processing.

GNLW363C-FHD decanter centrifuge is fully hydraulic drive. Th Full hydraulic driven system is imported from leading brand from Switzerland. The bowl speed and conveyer speed of GN FHD decanter centrifuge is adjustable within the permitted range. It can achieve independent, step-less and large-range speed regulation for the bowl and conveying. The bowl speed and conveyer speed during working is showing on the screen.

The advantage of the full hydraulic drive centrifuge is for use in high temperature ambient for heavy mud with flexible bowl and differential speed. The compact one skid design makes it easier for rig up.

GN FHD decanter centrifuge is composed of bowl assembly, collection box, hydraulic drive system, electrical control panel, drive motor, vibration switch (optional), case, base assembly, and skid.

During decanter centrifuge operation, drilling mud or slurry is pumped through the feed tube into the center of the rotating conveyor, where it splashes against the feed accelerator. Screw pump is widely used as feeding pump for decanter centrifuge, besides screw pump, centrifugal pump and submers. The high velocity slurry is then dispersed out four feed nozzles mounted in the periphery of the conveyor cylinder. Rotating at a higher speed than the conveyor, the bowl creates an additional shearing effect, which further increases the slurry’s acceleration. The depth of the slurry in the bowl (pond depth) is determined by the setting of weirs on the liquid bowl head (large end of the bowl).

GN Solids is a major manufacturer for drilling mud solids control equipment, drilling waste management equipment, and replacement shaker screens for various brand shale shakers. As more than half of GN products are exported to international market, GN Solids Control has more understanding on international market and for different markets.

For examples, GN Solids Control can offer VFD decanter centrifuge with explosion proof A/C cooling system for high temperature ambient areas and regions, GN Solids Control can offer waste management system with heating function for low temperatures areas in Russia and Siberia. GN Solids Control is the 1st API certified solids control company in China, also certified by: Europe DNV CE, HSE, ISO9001, ISO14001 ISO 28001, Russia CU-TR certificate. DGMS Explosion Proof standard is specially requested for India market.

Last week, some sets of dual tandem shale shaker for India clients. The dual tandem shale shakers will be used at oil and gas drilling field of a major oil company in India.

Shale shaker is a basic separation equipment for all kinds of drilling activities, like oil and gas drilling solids control mud system, Horizontal directional drilling mud recycling system, water well drilling mud recycling system, TBM, piling, tunneling and micro tunneling desanding plants. Per different applications, clients can choose double deck shale shaker, singe deck shale shaker, 2-panel compact design shale shaker, 3-panel or 4-panel big capacity shale shaker. And for different applications, clients can choose dual tandem shale shaker, or triple tandem shale shaker.

Besides various models of shale shakers, GN Solids Control is capacity to make full line drilling mud processing equipment, like mud cleaner, desander, desilter, vacuum degasser, centrifugal degasser, mud gas separator, mud agitator, pumps, decanter centrifuges, and drilling waste management equipment, like vertical cuttings dryer, high G dryer, high speed decanter centrifuge, screw conveyor, dewatering unit, etc… Other GN Solids is capacity and experience on zone-discharge closed loop mud recycling system for oil and gas drilling field.

This week, a client contacted a sales manager of GN Solids Control; he said he wanted to order some Augers. He asked GN Solids Control sales manager to inquire what augers can GN Solids Control make, and he also want to know what the safety protections on GN Solids Control auger are equipped, so someone will not be hurt while using it.

GN Solids Control recommends the client some of the same safe standard for a major Oil copany in Middle East. Below are some of the HSE standards suggested to the client:

1) GN Solids Control can equip grab wire along the auger length: operator can stop the auger at any place along the auger. And in case the auger cover is opened, or not closed well, the auger will be stopped automatically. In this case, operators will not be hurt.

2) Control panel can be equipped with E-stop and with control for the grab wire, to switch off power supply to the auger automatically in case the auger covers are opened or removed or not closed or not appropriately fixed.

3) Another optional safety protection is Audio and / or visual alarm system on auger control panel: the voice and light alarm will automatically switch on once the power is switched on, and the Audio and / or visual alarm system keep for some seconds before the auger start rotating. The alarm gives time for the nearby operator to know the screw conveyor will start rotating, and reminder them to keep away.

Auger is also known as screw conveyor. It is widely used at oil and gas drilling flied. Screw conveyor can be located under shale shaker, mud cleaner, desander, desilter, or decanter centrifuge, to collect drilling cuttings discharged from solids control equipment, and transfer the drill cuttings to drilling waste management equipment, like high G force shale shaker and vertical cuttings dryer.

GNSX-450 is a three phase decanter centrifuge. The bowl size of GNSX-450 three phase decanter centrifuge is 450mm (18 inch) diameter by 1800mm in length. It is designed for 24 hours continuous and smooth operation throughout the day. It is mainly composed of driving system, decanter bowl, and screw conveyor inside the bowl, cover box, skid and VFD control panel.

Working principle of GN Solids Control 3 phase decanter centrifuge

GN Solids Control 3 phase decanter centrifuge is mainly designed and made for liquid, liquid and solids separation. GN Solids Control 3 phase decanter centrifuge can also be applied to two immiscible liquids with different specific gravities. When the solids and liquid mixture (raw material before separation) rotates into the high-speed rotating bowl internal the 3 phase decanter centrifuge, the solids and liquid mixture rotates synchronously with the drum. As the reason of the different specific gravity, the centrifugal force of the solids and different liquid is different.

The solid particles which with the larger specific gravity are subjected to the greatest centrifugal force, followed by the heavy phase liquid (such as water) and the light phase liquid (such as oil). So the centrifugal force is becoming less from outside to inside according to the magnitude of centrifugal force. A concentric solid layer and two liquid layers are formed.

The Solids phase inside the mixture will be pushed out by the conveyor impeller of the centrifuge bowl, and liquids are removed from their respective nozzles depending on different gravities. As the reason, GN Solids Control three-phase decanter centrifuge can not only separate the solid from the solids and liquid mixture, but also separate the two-phase liquid with different specific gravity in the liquid and liquid mixture. In this case, Solid / liquid / liquid separation can be achieved.

Besides 3-phase decanter centrifuge for oil field and non-oil field, GN Solids Control has other separation equipment to cater for different application, like shale shaker, mud cleaner, desander, desilter, degasser, transfer pumps, drilling waste management equipment, etc…

Screw pump is also called as Progressive Cavity Pump. A screw pump is a type of rotary pump which is equipped with rotor and stator. The rotor and stator is combined together and rotate within a cylindrical cavity or liner. The fluid or transfer medium enters from the suction side of the screw pump and moves linearly along these intermeshing screws / rotors to the discharge side of the pump.

Screw pump is a popular feeding pump type for centrifuge, no matter for decanter centrifuge, 3-phase centrifuge, or disc centrifuge. Besides screw pump, submersible slurry pump and sand pump are also been used a centrifuge feeding pump. But as submersible slurry pump and sand pump are both a kind of centrifugal force pump, they are not as good as screw pump to feed for decanter centrifuge.

Decanter centrifuge is a high speed rotating device. There will be many self-protection function for safety and also for protect the device. A major self-protection application is over-load protection. It means in case the centrifuge feeding is over load, the centrifuge will be stopped to avoid damaging bearings or damaging rotating component. In this case, the feeding screw pump must be capable to adjust the feeding flow. There are mainly 2 ways to control the feeding screw pump input flow rate:

1) If fixed speed screw pump is used to feed for decanter centrifuge, a VFD control panel is requested to adjust the feeding flow rate to avoid over load, and to reach the better separation performance.

2) If manual adjustable speed screw pump is used as decanter centrifuge feeding screw pump. Fix speed control panel can be used for the pump for start and stop.

Furthermore, as the decanter centrifuge has self-protection function in case of overload. To avoid damage the centrifuge, there must be an inter-lock connection between the centrifuge control and the feeding pump control. In case the centrifuge is stopped, feeding pump can be stopped immediately. And the screw pump cannot be started until the decanter centrifuge is running stably.