drilling waste management

In order to treat the drilling cuttings, operators need to check out way to transfer the drilling cuttings to the treatment gear like high G dry skin shale shaker and vertical H cuttings dryer. The most popular opportunity for transfer drilling cuttings is a screw conveyors (Auger Conveyor), and the drilling cuttings send pump.

Part 1) Mess Conveyor for Drilling cuttings transfer
Screw conveyor can also be called Auger Conveyor, it truly is one of the most popular equipment to get transfer drilling cuttings. Advantages for the Auger conveyor will be the simple design, and easy operations, as well as a long length with regard to picking up the cuttings dismissed from the shale shakers or even mud cleaners on the drilling rig mud tanks. Often the disadvantages are that, it can be hard to layout for move from one equipment to the other, for the long distance. Since the conveyor cannot lay at qualification over 45 degree. Which is not good to transfer drilling cuttings with high moisture.
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Component 2) Vacuum Pump or even  shear Pump for drilling cuttings transfer.
The vacuum cleaner pump or solids pump are used to transfer drilling cuttings. The big advantages are long-distance transfer with easy configuration, and it can be use to get transfer high moisture drilling cuttings. The vacuum pump or solids pump are generally driven by air, making it safe to operate in threats areas to be explosion explanation. The disadvantage are the power usage for creating air, and never suitable to pick up drilling cuttings from different equipment much like the shale shakers, mud cleaners and decanter centrifuge  on the mud tank.

So most of the cases, workers will combine the drilling cuttings screw conveyor plus the solids pump together to help transfer drilling cuttings for the treatment equipment.

GN Solids Control is able to provide you the actual screw conveyor and drilling cuttings transfer pump for any drilling waste management operations. Furthermore high G drying shaker and vertical cuttings electric drying machine are available from GN manufacturing in stock.

Last week, after months of hard work of all GN staff, 70 containers of solids control equipments from GN Solids Control sailed to Middle East. This is a land mark of not only GN’s company memorandum, but also a breakthrough of China branded solids control equipments and drilling waste management equipment. This order is working for oil service in middle east and work in tough conditions of temperature above 55 degrees centigrade.

160531-Decanter-Centrifuge-

Those equipments are of high quality material and per clients’ requests, they are of ATEX Zone 1 standard and with DNV lifting.

GN VFD controlled decanter centrifuges are always popular among the clients and countries in middle east and other high temperature conditions.

For the centrifuge main body, the high configuration GNLW series decanter centrifuges share the same features like:

  1. best bowl material SS2205 by centrifugal casting and such is the highest standard material for oil and gas decanter centrifuges. Many European and USA brands use this kind of material for bowl material.
  2. SKF bearings for stable performance and longer service life. And during transportation, GN has special and gentle solutions for protecting the bearings from being damaged on the rough road.
  3. tungsten carbide tiles for impeller protection and special ceramic material for solids discharge ports.

And many other features are applied.

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About the VFD control panel, GN has both flame proof VFD control panel and positive pressurized VFD control panel with PLC smart touching screen. The positive pressurized control panel has the self cooling system, and it is more suitable than the flame proof ones in high temperature condition. All the electric components are of international famous brands like Siemens, Schneider and ABB. For this order, because they are of ATEX Ex, some brands and standards are even higher than usual.

To maintain the good relationship with some
VIP clients, GN Solids Control have plan to visit some big clients in different
regions. Our target is to conclude on the past projects, do after sales
service, offer free solids control items if necessary, and also talk more new project
coming in near future. This year, we have visiting plan to VIP clients in Iran,
Kuwait, UAE, Egypt, Nigeria, Russia, USA, Brazil, Australia, Korea, Argentina
etc. The VIP clients will support 80% sales amount of GN
Solids CONTROL
. We cherish the long term relationship with the VIP clients,
and will improve every year to give better product and service.

GN Solids Control can develop so fast, one
is depending on the high quality equipment and good price. The other is
depending on the fast response after sales service. Our product have been
exported to over 60 countries. The sale amount each year can reach to about
20million dollars. The mainly equipment including:

1) Large quantity of decanter
centrifuges
.

Every year we export over 250 sets
centrifuge with feeding pumps. About 150 sets centrifuge for overseas market
and about 100 sets centrifuge for domestic market. Most popular model
centrifuge is GNLW363CG or GNLW363CG-VFD. GNLW363CG is GN fixed speed
centrifuge, with 3200rpm /2700rpm / 2200rpm speed. GNLW363CG-VFD is GN variable
speed centrifuge, with stepless adjustable speed from o to 3200rpm

2) Vertical cuttings dryer, not large
quantity

The needs of vertical cuttings dryer is not
that higher as decanter centrifuge. We may export about 20 sets vertical
cuttings dryer for drilling waste management.
The drilling waste management conception is also just aroused in past one to
two years. GN Solids Control vertical cuttings dryer can work similar as CSI
dryer after we test the dryer in drilling site

3) large quantity of pumps

We export large quantity of centrifugal
pumps, shear pumps,
submersible slurry pumps to overseas solids control drilling site and HDD
drilling companies.

If you need any solids control equipment,
pls contact us freely.

We are negotiating our first AD grit removal contract (potential 3000 ton). We will use the unit that is on the way for this.
We are putting a package together for sewage sludge, consisting mainly of rags and grit separation. First process will be the removal of the rags and for this we will have to make adjustment to a single deck shaker by adding spray bars underneath the shaker deck to be able to clean the mesh if it gets blocked. We can do this as a retrofit here but would prefer if it can be designed and constructed in your factory. We will need a buffer tank with pump to feed the spay bars incorporated in the unit ( fresh water fed). Video attached. We are looking at shaker:
GNZS703E-DZ  one or two units to match 240m3 desander
After removal of the rags we have to deal with the grit and believe this should be done with a standard desander unit. GNZJ703E-D1S8N/ GNZJ703E-2S12N
We might want to add on to this a desilter unit or small centrifuge. The water for the spray bars can come from fresh water supply and does not have to be recycled as disposal of water is not a problem at sewage treatment plants.
All to be mounted on a tank with appropriate compartments.

We might need a suction pump (chopper pump type) to chop rags up to smaller bits and to deposit on the first shaker.https://www.youtube.com/watch?v=zhTEjFd-vxo
http://www.chopperpumps.com/
Ideally none of the units to be longer than 2500mm so we can fit it broadways onto the lorry deck, together with walk ways and access ladder.

Before starting today’s article, we would like
to tell that the decanter centrifuge mentioned here is 2 phase type centrifuge
used in to separate the solids and liquid where the slurry is coming from the
drilling site. The slurry includes drilling fluids, oil sludge and so on.

Decanter Centrifuge Applications

On drilling site, the decanter
centrifuge
is used in solids control system as the final stage solids
control equipment to remove the fine solids in the drilling mud or to recover
the barite in drilling fluids. While the decanter centrifuge can also be used
as a machine to polish the effluence discharged from the vertical cuttings
dryer in waste
cuttings management system
. In the dewatering system, we can also find the
decanter centrifuge that is used to treat the flocculated slurry in which the
ultra fine solids can be separated out.

How to Operate Decanter Centrifuge as per
Request

GN’s 2 phase decanter centrifuge is always
used to separate solids and liquids. According to different request, we can get
the different discharges. If you want to get much dryer solids, you can
increase the feeding capacity, increase the rotating speed, adjust the liquid
level plate to a low position or reduce the differential speed. By doing any
one mentioned before, you can make the solids discharged much dryer. And if you
reduce the feeding rate, reduce the bowl speed, fix the liquid level plate on
the bowl big end to a high position or increase the differential speed, you can
get a much clear liquid. Sometimes, you need make adjustment for several of the
factors at the same time to get the expected result according the project
request. In dewatering system, the amount of flocculation agent added in the
fluids would change the dryness of the discharged solids and liquid.

GN’s latest C version decanter centrifuge
with VFD control
panel
is an ideal machine to do all the above jobs, as it can be adjusted
easily via HMI system to run at RPM from 0 to more than 3000.