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Last week, GN Solids Control finished a mud decanter centrifuge dewatering system for a TBM engineering company in China. The decanter centrifuge dewatering unit will be used to treat waste slurry from TBM drilling.

The decanter centrifuge used in the dewatering system is a special model with very huge bowl: GNLW764A-VFD. The bowl size of the centrifuge is 760mm (30 inch) . The bowl length is up to 3328mm. It is a high speed 2-phase decanter centrifuge for liquid and solids separation. The cut point of the centrifuge is 2 ~ 5 microns. It is a dual motor centrifuge. The main drive motor used in the decanter centrifuge is 160Kw, and back drive motor is 90kw.

The chemical dosing unit used in the centrifuge dewatering unit is a very big size GNDW-6000L. The chemical dosing capacity of the unit is 6000L per hour in order to suit the big bowl centrifuge handling capacity.

The GNLW764A-VFD 30 inch big bowl decanter centrifuge is fixed inside a 40ft container, there are windows and door with access to discharge soil by screw conveyors.The GNDW-6000L chemical dosing unit is fixing on another 40ft container and lies on the top of the centrifuge container. It can minimum the footprint to save space.

GN Solids Control makes various sizes of screw conveyor augers for the oil gas industry. The screw conveyor augers are widely used for transfer the drilling cuttings to feed to the cuttings dryer,and cuttings collection box.GN designed 3 size of diameter, 10inch, 12inch, 14inch, 18inch, each size has 4 different length for option according to the drilling site of the customer.GN Solids Control can offer fixed speed gearbox drive and manual adjustable speed gearbox for each size of gearbox.

Some clients want to use Standard Bearing with seal (if possible double bearings) instead of Middle Hanging Bearing core in the hanger bearing for the connection of each auger sections. GN Solids Control does not recommend this design.

Firstly, standard bearing and seal design are costly. Plus it is more complicated to install.

Secondly, the bearing at this location is easy to be worn out,especially be worn out by drilling mud and drilling cuttings. If the seal is not good enough at this location, the bearing will soon be broken.

Moreover, it is inconvenient to replace the bearing and seal after wear. The operators need to fully dismantle the auger for replacing new ones. As far as we know, there are no suppliers in China use standard bearing at this position. Their popular design is using copper sleeves at this location.

GN Solids Control use hanger bearing which are made of alloy materials to fit for oil field drilling waste transfer. Alloy material is more wear-resistant than copper. Plus, GN Solids Control makes the hanger bearing in the form of a separate unit. The parts can be quickly replaced by removing the bolts and mounting brackets in case of needed.

GN Solids Control use helical gear reducer (speed adjuster). It is more stable and less maintenance.
Besides, clients will want there are clear separation between the electric motor and manual speed adjuster (gearbox or reducer) to enable job site operators to remove the electric motors for repair without affecting the gearbox (speed adjuster or reducer). GN Solids Control connect the driven motor and gearbox (speed adjuster reducer) by flange. It is easy for installation and dismantle.

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.

During the construction of TBM and Pipe Jacking activities, the dirty slurry coming out from the hole will contain a large quantity of sand and stones. In order to protect environment and recycle the water, it is necessary to treat the dirty mud. GN Solids Control is a professional manufacturer to design and make complete set of slurry separation plant. GN Solids Control can make various sizes slurry separation plant to suit for different job site situation.

This week, a set of GNTBM-240 TBM Slurry Separation Plant is ready. The unit is made for a South America client.
The handling capacity of the GNTBM-240 slurry separation plant is 240m3/h. The cut point of the separation plant is 20 microns. The GNTBM-240 TBM Slurry Separation Plant contains a shale shaker, desander separator, desilter mud cleaner, bottom drying shaker, feed pump and mud tank. The shale shaker is a double deck shale shaker with totally 5 screens. The desander cone contains Qty 1 × 20 inch hydra cyclones. It is combined with the coarse separation double deck shale shaker. The desilter cleaner contains Qty 12 × 4 inch hydra cyclones. It is mounted on a 2-panel shale shale shaker to use as a combo type shale shaker.

Feeding pump for GNTBM-240 slurry separation plant heavy duty slurry pump. Totally 2 slurry pumps are used in the separation plant to feed for desander cone and desilter cones. Clients can use another heavy duty slurry pump to feed for the whole GNTBM-240 slurry separation plant.

Total power of the GNTBM-240 slurry separation plant is 116Kw. GN Solids Control offers electrical control system to offer clients turn key solution.

The GNTBM-240 slurry separation plant is designed for easy transportation. Operation dimension of the system is L6058×W3081×H4316. Inland shipment of the GNTBM-240 slurry separation plant is L6058×W2438×H2591.

A package of solids control equipment is ready for shipment. They are made for a waste management project for a Canada client. A shale shaker, a 1000GPM 3-1 mud cleaner and a high speed decanter centrifuge. They are basic separation equipment for oil and gas drilling mud treatment system.

Shale shaker model is GNZS594. It is a 4-panel linear motion shale shaker with compositeframe pretension screens. There are 2 vibration motors are equipment for the shale shaker. The motor brand are international top brand Italy OLI or US Martin Brand. The EX control panel are made by GN Solids Control with with SIEMENS or Schneider Component. The screens are fixed with wedges and with Gear unit for fast screen change and longer screen life. The Mechanical Deck angle adjustable system is GN patent design. It can adjust shaker deck while the shale shaker is working. And the user only need to adjust shaker deck at one side, both shaker deck angle will be changed levelly.

 

Mud cleaner is a desander & desilter & Shale Shaker 3 in 1 unit for compact footprint combo type shale shaker separator. Its capacity is 1000GPM. The combo type shale shaker is equipment with no. 2 × 10inch desander cone and no. 12 × 10 inch desilter cone. The hydro cyclones are made by Polyurethane Material for long life time. And the hydro cyclone assembly is removable for adjusting to be a shale shaker. The under flow shale shaker model is the same with first stage solids control shale shaker GNZS594.

 

The high speed decanter centrifuge is 14inch bowl size. The separation speed can up to 3200rpm. GN Solids Control can offer fixed speed control, VFD control and FHD control for the 14inch decanter centrifuge. It is located on a telescopic skid. The skid can fall down to less than 2.5m for international container shipment. And it can lift to 2.8m ~ 4.2m per clients request during working.

GN Solids Control can make full package rapid liquid mud plant. Besides the metal components, GN Solids Control is capacity to supply all items including mud storage tanks, mud mixing tank and mud processing tank with all the manifolds, mixing equipment, processing equipment, level sensors, and central control room, etc…

Vertical storage tank is popular used at liquid mud plant. Compared with horizontal storage tank, vertical tank takes small footprint. And further more, vertical tank need less quantity mud gun than horizontal mud tank. A vertical tank only need to equip Qty 2 mud gun. But the same capacity horizontal mud tank will need at least double qty mud gun.

Last year, GN Solids Control supplied a liquid mud plant for a South America client. There are Qty 14 vertical mud tank and a package of mud mixing tank in the system. It is only part of a whole liquid mud plant. As the client is urgent to use some parts of the liquid mud plant. The whole liquid mud plant includes below items:

1) Totally Qty 75 × vertical storage tanks. The project request min. 400bbl usable capacity. GN Solids Control supplied 450 bbl vertical storage tank. Each storage is equipped with qty 2 mud gun and a level meter. Total usable capacity of the 75 vertical mud tanks is 33,750 bbl.

2) 2 packages of horizontal mixing tank unit. Each mixing tank is equipped with a dual mixing unit and dual transfer pump unit.

3) 1 package of horizontal processing tank C/W a shale shaker and qty 2 decanter centrifuge.

4) 6 packages of centrifugal pump transfer unit with its motor starter.

All pipelines and electrical control system are supplier by GN Solids Control. This year, GN Solids Control will supply the rest qty 61 vertical storage tanks, 1 package of mixing tank unit and 1 package of processing tank unit.

Shale shaker and Mud cleaner is the basic separation equipment in drilling mud solids control system. Shale shaker is the 1st stage solids control equipment. It is 1st separation equipment to treat the dirt drilling mud from drill holes. Drilling mud cleaner is used after solids control shale shaker. It is the 2nd and / or 3rd solids control separation equipment.

A set of dual tandem shale shaker and mud cleaner package is ready and will be shipped to a drilling company. Dual tandem shale shaker is widely used at work over rig drilling mud recycling system. The dual tandem shale shaker shipped in this project is a combination of Qty 2 GNZS594F-SHBF shale shaker, a mounting skid, and mud distribution pipelines. All of them have 2 motors on each shale shakers.totally 4 motors for a set dual tandem shale shaker package. GNZS594F-SHBF is the model of single shale shaker. It is a single deck linear motion shale shaker.

GNZS594 is the series code of the shaker model. It means the shaker screen width is 590mm. 4 means 4-panel shale shaker. F is the version of the shale shaker. S means solids control shale shaker. GN Solids Control also offers HG (high G drying) shaker for drilling cuttings management. HB means the shale shaker is equipment with back type mud distribution box. F is the design version of the shale shaker.

The mud cleaner in this system is a 1000GPM combo type 3-1 shale shaker. The model of the combo type mud cleaner is GNZJ594F-S2S12NF. It is a combination of Qty 1 solids control shale shaker GNZS594F, Qty 2 × 10 inch desander cone, and Qty 12 × 4 inch desilter cone. The under flow shale shaker model is GNZS594F. In this case, all spare parts are interchangeable with the first step solids control shale shaker. Clients are easy to stock back up spare parts and replacement shaker screens.

Mud cleaner is the most popular separation equipment in oil rig drilling mud solids control system. Drilling mud cleaner is used after solids control shale shaker. It includes desander mud cleaner, desilter mud cleaner, and combo type 3-in-1 mud cleaner. 3-in-1 mud cleaner is also widely known as combo type shale shaker. GN Solids Control makes various models of combo type shale shaker.

A package of drilling mud desander cleaner and desilter cleaner are ready for dispatching to a oilfield service company in China. The desander mud cleaner and desilter mud cleaner for this project is combined with 2-panel small size shale shaker.
The desander mud cleaner model is GNZJ752F-3S. It is includes a 2-panel under flow shale shaker, and No. 3 × 10 inch desander cones.

The desilter mud cleaner model is GNZJ752F-12NF. It is includes a 2-panel under flow shale shaker, and No. 12 × 4 inch desilter cones.

API RP13 confirmed shaker screens are used for the mud cleaners.

Besides the 2 models desander mud cleaner and desilter mud cleaner. GN Solids Control makes other models mud cleaner. Below are the major types of mud cleaner GN Solids Control can make:

1) Desilter mud cleaner and desilter mud cleaner without downstream drying shale shaker. It is the most economic mud cleaner. Its design is compact and price is low. Typical model is GNWS-2SF / GNWS-3SF and GNWS-12N / GNWS-16N for 1000GPM or 1500GPM handling capacity.

2) Desilter mud cleaner and desilter mud cleaner with GNZS752 Series Mini Shale Shaker Screen. There is a small size shale shaker under the hydro cyclone separator. Typical model is GNZJ752F-1S / GNZJ752F-2S and GNZJ752F-8NF / GNZJ752F-12NF

3) Desilter mud cleaner and desilter mud cleaner with GNZS703 Series 3 Panel Shale Shaker Screen. It is combo type shale shaker.  Typical model is GNZJ703F-S2SF / GNZJ703F-S3SF and GNZJ703F-D8NF / GNZJ703F-D12NF / GNZJ703F16NF.

4) Desilter mud cleaner and desilter mud cleaner with GNZS594 Series 4 Panel Shale Shaker Screen. It is combo type shale shaker.  Typical model is GNZJ594F-S2SF / GNZJ594F-S3SF and GNZJ594F-D8NF / GNZJ594F-D12NF / GNZJ594F16NF.

ViST is Vacuum Shaker Screen Technology which is developed and designed by GN Solids Control. The shaker screen vacuum unit is to work with shale shaker to reduce drilling waste and recycle drilling fluids. At some jobsites, clients use screen vacuum unit to replace drilling waste high G drying shaker.

There are insert type screen vacuum unit and external mounting type screen vacuum unit. For GN own design shale shaker and some other shaker model which use frame screens, if there is space to insert the catch pan (tray) under the outside discharge end shaker screen, we call it insert type screen vacuum unit. It is relative small modification on job site shale shaker. If for GN brand shale shaker, all shaker models reserve the design to add screen vacuum unit directly.

For insert type vacuum screen unit, the catch pan is fixed directly under the discharge side shaker screen. The screen API size depends on the shale shaker API screen, or the high G drying shaker API screen.

But for the external type screen vacuum unit, the client will use a small screen after the shale shaker or high G drying shaker.
Some clients want to use very fine screens, like API-230,270 and 325 while they add the external screen vacuum units to the shale shakers on offshore drilling rig mud system.

GN Solids Control does not recommend clients to choose such fine screens for external screen vacuum unit after solids control shale shaker. As solids control shale shaker does not use very fine screens. The high G drying shale shaker may use fine screens. But API 230, API 270 and API 325 are not used by solids control shale shaker. The small screen API size should be similar to the shale shaker screen. It cannot be too fine. Otherwise, it may cause block.

In other job site while clients use the screen vacuum unit for GN shale shakers, the max. shaker screen API size they use is API 120 and API 140. Hardly over API 140.