GN Oil Drilling Solids Control Equipment

Oil drilling mud dewatering
unit is used to use chemicals to remove the fine solids from the water based
drilling fluids, it has been used in Argentina, Singapore, Nigeria and other
countries in the world.

We
have used the mud dewatering unit for oil sludge waste separation for COSL(China Oilfield Services Limited). Details
pls check http://www.gnsolidscontrol.com/video/oil-sludge-waste-treated-by-gn-centrifuge-with-chemical-for-cosl
. But mostly we only use the mud dewatering unit for water based drilling mud.

GN high speed and variable speed decanter
centrifuge GNLW363CG-VFD and GNLW363CG separation point is 2~5 microns, so it
can remove the solids bigger than 5 microns. For the fastest speed decanter
centrifuge with 3800rpm and 3000G , its separation point is 1~2 microns, which
can separate finer solids, but the working efficiency is not 100%, compared
with mud dewatering unit.

In some cases, the solids particles smaller
than 5 microns need to separated in the water based drilling waste, we will use
dewatering unit by flocculation to make the solids enhanced for easy separation
of the decanter centrifuge.

GN standard dewatering unit including:

(1)    
Powder
Polymer Mixing System

(2)    
Coagulant
Mixing Tank

(3)    
Polymer
and Coagulant Feeding System

(4)    
And
other components

The dewatering unit can be installed inside a
20ft/40ft container together with the decanter centrifuge, with air
conditioner, the purpose is for easy transportation and rain proof, sun proof.
It can be also made on one skid and put it on the ground or mud tank skid, the centrifuge
With VFD control panel are made as a unit with mud tank. The dewatering unit on
top of the tank to save place or on the skid for easy transportation. The latter
way is to save the cost for container, but you must need a sun/rain proof
cover.

To know more details about GN mud dewatering
unit for water based drilling mud, pls contact GN solids control.

Submersible
slurry pump can be used in different applications for oil & gas drilling
solids control system and mud recycling system. The applications are as below:

(1)   
Feeding pump for shale shaker in the mud recycling
system for HDD, water well drilling, CBM.

(2)   
Feeding pump for decanter centrifuge when there is
no enough place for the horizontal screw pump for different industries, oil
drilling , dewatering unit, drilling waste management system.

(3)   
Mixing pump with mixing hopper, because the
submersible slurry pump is vertical installed, which can save the place and
remain the storage capacity, but pls notice the lift and working pressure to
match the venturi hopper.

(4)   
Feeding pump for complete
desander/ desilter unit/ mud cleaning system from the mud pit, remember to
choose the correct model with proper lift, because the flow rate and lift will
loss during the transferring in the long distance. The normal submersible
length is 1.5m, and max 1.8m. If the mud pit or mud tank is very high, and you
need longer submersible length, we will suggest to use hose/pipe for the extra
length, or use the Submerged pump fully under the liquid level.

If there
are small rocks and high solids content in the mud, the submersible slurry pump
is pretty suitable because the impeller is with special wearable hard surface .Centrifugal
pump, screw pump can not be used in such applications, hose pump is another
option for such projects.

Compared
with the horizontal installed pumps, like centrifugal pump, shear pump, screw
pump, the vertical submersible slurry pump required small space and keep the
storage capacity and free of maintenance and reliable performance. There is no
bearing and gland seal between impeller and pump body, so the slurry pump is
maintance-free and high temperature resistance.

GN
solids control has various models of submersible slurry pumps for option.

Water based
drilling mud and oil based drilling fluids are applied together for one land
drilling rig because of the various purpose of the drilling. One package of
drilling waste management or drilling cuttings disposal unit which be used for
both water based drilling cuttings and oil based drilling cuttings are very helpful
for the drilling rigs, it can less the cost for the drilling waste management
system and reduce the space to locate the system, so that you can reduce your total
cost of drilling and ensure to comply with the requirement of environmental
solutions.

Last
week we went to the jobsite of a CNPC drilling rig to check the performance of
our drilling waste management system working with water based drilling
cuttings. The discharged mud from the decanter centrifuge is dry enough and
make the clients satisfied with the result. The system is a modular drilling
waste management system which can be divided into several modulars.

(1)   
Vertical cuttings dryer system :

Including
GNCD930C-VFD vertical cuttings dryer with telescopic skid and the flushing pump
on the skid, the VFD control panel are installed besides the skid, there are a
dry cuttings collection box on the skid.

(2)   
Cuttings transferring system

Including
screw conveyor to transfer the dry material to the top of the vertical cuttings
dryer and cuttings pump to transfer the wet material with much fluids by the
hose to the cuttings dryer. There are a pressure unit on the skid to provide
positive pressure of the VFD control panels.

(3)   
Fluids storage tank

Including
a Cylindrical type tank with mud agitator on top to collect the clean fluids
from the vertical cuttings dryer and a submersible slurry pump to transfer the
fluids to the high-G dryer.

(4)   
High G dryer system

Including
high-G dryer shaker with a catch tank on the bottom to less the solids content
of the fluids discharged from the cuttings dryer and make the decanter
centrifuge working better.

(5)   
Decanter centrifuge system

Including GNLW363CG-VFD decanter centrifuge on the
high telescopic skid and long solids discharge slot, and the clean fluids will
flow back to the solids control system storage tank for reuse.

GN
solids control design and manufacture mud cleaning system for water well
drilling, geothermal drilling, coal bed methane drilling, horizontal
directional drilling, core drilling, Rotary drilling, air drilling, etc. The
purpose to use GN mud cleaning system/ mud recycling system is that:

1 Less
the drilling waste and less the waste disposal cost, it is very important in
some countries which has very strict environment protection laws.

2
Recycle and reuse the drilling fluids, which is very essential in some area
lack of water or very difficult to get new material from the city

3 To
be a responsible company for the society

Depends
on the core diameter and jobsite area, we provide different treating capacity
mud cleaning system. Our standard model including 200gpm, 350gpm, 500gpm,
1000gpm, other customized treating capacity is available to meet your
individual requirement.

Case
study of GN mud cleaning system for water well drilling in the world as below:

Case
#1: GN mud
recycling system for Niger Water Well Drilling,

http://www.gnsolidscontrol.com/drilling-fluids/gn-mud-recycling-system-for-niger-water-well-drilling

The
client has many similar projects of water well drilling in the same area, water
is their main issue. He is satisfied with our mud recycling system, and going
to need 100 units for their future water well drilling project. The customized
water well drilling mud cleaning system is trailer mounted for easy
transportation, compact design is for their limit space in the jobsite.

Case
#2: Water well drilling mud cleaning system to Kuwait, http://www.gnsolidscontrol.com/drilling-fluids/water-well-drilling-mud-cleaning-system-kuwait

Case
#3: Hydraulic Jack Up Mud Cleaning System for Australia, http://www.gnsolidscontrol.com/video/hydraulic-jack-up-mud-recyclling-system-for-australia

Regarding
to the fast move solution, GN solids control provide options for trailer mounted mud system, or
skid mounted mud system as well as hydraulic jack up system for fast moving
without lifting by cranes. The hydraulic jack up mud system is very popular
among our clients in Australia, which is cheaper than the trailer mounted mud
system, but do not need a crane when you get ready to move to another place.

Mud
Mixing & Cleaning system produced by GN solids control are available for
sale and rent in Houston, TX. They can be used for piping, crossing and
trenchless civil construction works.

You
have 2 options for GN mud mixing & cleaning system:

Option
#1: Jet mud mixer+ Mud storage tank + GN economy mud cleaning system

The
Mud storage tank can be replaced by a mud pit which is existing owned by the
HDD contractor, it is used to reserve the fluids after mixing which can be
re-used for the project and reserve the fluids discharged from the mud cleaning
system.

The
jet mud mixer is a compact designed skid with mud hopper and mixing pump,
electric control cabinet, pipes. The separated jet mud mixer is more flexible
in the actual utilization.

GN
economy mud cleaning system including 3 standard models, GNMS-200D, GNMS-500D,
GNMS-1000D, all of them with a double deck shale shaker with different numbers
of hydrocyclones.

Option
#2:

GN
self-contained mud cleaning system, this is a multi-function mud system with
mud mixing, mud cleaning, mud storage functions. The advantages for such
self-contained design is for convenient operation, easy moveable, better
separation performance. But with a little higher price compared with the
economy mud cleaning system.

Main
components of the GN premium mud cleaning system:

Mud
tank

Mud
hopper

Shale shaker

Mud cleaner(
desander, desilter, shale shaker, with 2 or 3)

Mud
cleaner feeding pump, Mixing pump

Mud
agitator/ Mud gun

Option
1 is choosed when you already have a mud pit/ storage tank, and mud mixing function
is not so required,and you have space limit in the jobsite, so you need a smart
unit with the good cleaning function.

Option
2 is choosed when you need a multi-function mud system for easy transportation
from one site to another with better performance.

Oil sludge
waste stabilization and solidification unit is a customized system to improve
pollutant retention and give the material obtained a certain structural
durability. Their objective is thus not to achieve a simple cladding of the
contaminated material in an inert matrix, but a complex physical-chemical
process to obtain stabilization and solidification of the pollutants.

Why use stabilization
and solidification unit for oil sludge waste?

Oil sludge
waste come from different ways, like drilling waste storage tank/ pit/ lagoon,
tank bottom cleaning, cuttings separated from drilling waste management system,
solids control system, etc. The oil sludge waste should be proper disposal to
prevent the destroy of environment. The trend of drilling is no-pit drilling in
the future along with the much more strict environmental laws in most of the
countries, which is combination of drilling mud solids control system plus
cuttings transferring system, drilling cuttings treatment system, cuttings
disposal system. GN customized designed cuttings solidification/ stabilization
unit and TDU( thermal desorption unit) are both cuttings disposal methods.

The main
components of GN stabilization/ solidification unit:

1 Absorber conveyor

2 Cement Conveyor

3 Solidsfication Mixer

4 oil
sludge waste collection hopper

5 cement
storage box

6 skid,
handrails, stairs

Working process of GN stabilization/
solidification unit:

（1）Oil
sludge waste collection hopper collects all the drill cuttings & oil sludge
waste, transported to the mixing chamber by the screw conveyor.
2) Cement storage box is keeping cements powder, through the tubular screw
conveyor, powders are sent to the mixer at pre-set capacity.
3) In the same way, absorber is kept in a box, then sent to the mixer by tubular
screw conveyor.
4) The high-shear mixer mixes all the material, and push to the front at the
same time.

If you have questions for the working process and additive
agents for the solidification/ stabilization unit , pls contact with GN solids
control.

The solidification unit and thermal desorption unit,
as one of the most efficient and economic drilling waste disposal method, has
been widely required by drilling waste management companies. GN new developed solidification
unit has been shipped to domestic client for no-pit drilling together with our
hi-G dryer system.

We have developed different customized drilling waste
management system for both water based drilling cuttings and oil based mud
& synthetic based mud.

For example:

(1)  
Vertical cuttings
dryer +decanter centrifuge with telescopic skid and small tank

(2)  
HI-G dryer
shaker+ decanter centrifuge for water based mud with mud tank

But the cuttings discharged from the vertical cuttings
dryer system, decanter centrifuge or hi-G dryer system is still a problem, they
are improper to be re-use, or disposal directly or difficult to be treated or
transported, because of the constituents of the cuttings are not proper for
land application or burial approaches. That is why GN will develop our own solidification
unit and thermal desorption unit to provide our clients a complete drilling
waste disposal solution for no-pit drilling.

The configuration of solidification unit as below:

1 ea cuttings hopper
with 5cbm capacity

1 ea cuttings
transfer screw conveyor with 7.5kw motor

1 ea SS304 steel
Absorber transfer screw conveyor with 1.1kw motor

1 ea SS304 steel
cement transfer screw conveyor with 1.1kw motor

1 ea SS304 Steel
solidification mixer with 2 reverse rotation screw impeller with 11kw motor

Various materials can be added to cuttings to solidify
and stabilize them, to get more details of GN solidification unit, pls contact
our sales.

As the most professional manufacturer of drilling
waste management system, GN solids control has provide a lot of drilling
cuttings treatment system for drilling companies, like CNPC, Sinopec,
especially in 2015, after Chinese government enact new laws for the drilling
waste disposal.

GNZS706E
double deck shale shaker has been widely used for mineral dressing/ ore
separation project, for example, gold recovery. We use different mesh screen to
separate different required ore size, normally the top screen is 3mm opening steel plate screen( or polyurethane material screen for
longer service life) to separate the big solids bigger than 3mm, it can protect
the bottom screen and make the working time longer. The bottom screen is customized,
because different minerals will need to separate different size ore.

GNZS706E double deck shale shaker specifications:

Total screen area 4.66m2( 52.5 ft2), top screen area 2.03m2(24.2ft2)
with 3 panels screen, bottom screen area 2.63 m2(28.3 ft2) with 3 panels screen,
up to 7.0G( adjustable), linear motion shale shaker. The Max treating capacity
is 140m3/h.

Mineral
engineering, mineral processing, or mineral dressing or ore dressing, is the
process of separating commercially valuable minerals from their ores. The simplest sizing process is
screening, or passing the particles to be sized through a screen or number of
screens.

GN solids control also provide a solution to put the hydrocyclones on top of the double deck
shale shaker, as a simple/ compact desanding unit. The working principal is
different with the double deck shale shaker. When worked as a double deck shale
shaker, the material is feeding to the buffer box and flow to the top screen to
separate course ore, and drop down to the bottom screen to separate the required
size.

When
working as a desanding unit with the hydrocyclones, which is used to separate
more fine solids. The material is feeding to the bottom screen to separate
course size then use a centrifugal pump for feeding to the desander cone, to
separate solids bigger than 75 microns, the top screen function for drying the
separated solids size and recycle more fluids.

GN decanter
centrifuge can be applied to both oil based mud and invert drilling fluids, and
water based drilling fluids and Synthetic Based mud.

INVERT
drilling fluids are generally used where drilling problems not easily handled
by water-based fluids are expected, or in situations where the invert drilling
fluid is more economical. The major advantage offered by invert fluids is
increased borehole stability.

Invert emulsion
fluid decanter centrifuge models:

GN centrifuge
applications:

1)     
Oil
sludge waste treatment with polymer mixing unit as dewatering unit, pls check
the working videos for COSL from here: http://www.gnsolidscontrol.com/video/oil-sludge-waste-treated-by-gn-centrifuge-with-chemical-for-cosl

2)     
Water
based drilling waste management for Sinopec, pls check the working video from
here:　
http://www.gnsolidscontrol.com/video/gn-wbm-waste-management-unit-working-for-sinopec-in-wushenqi-inner-mongolia　

3)     
Closed
loop drilling waste management system together with GN solids control system
and vertical cuttings dryer: http://www.gnsolidscontrol.com/drilling-fluids/another-two-sets-closed-loop-waste-management-system-for-domestic-oilfield-in-2015

4)     
VFD
decanter centrifuge for no pit drilling together with Hi-G shaker, http://www.gnsolidscontrol.com/drilling-fluids/gn-centrifuge-high-g-dryer-cnpc

To Serve our
clients better, GN solids control keep our main equipments in stock , including
different sizes decanter centrifuge, vertical cuttings dryer, hi-G drying
shaker, shale shaker, mud cleaner, economy mud cleaning system, etc.

GN vertical
cuttings dryer can be used for both water based mud and oil based mud, we are
the first China solids control equipments manufacturer who firstly designed
such multi functional vertical cuttings dryer and firstly field proved for
drilling waste management. Our unique air knife design can avoid the screen
basket blocking for water based drilling cuttings.

If you need
customized invert drilling fluids decanter centrifuge system, pls contact GN
solids control.

GN solids control specialized
at customized TBM slurry separation plant with polymer mixing and dosing unit
as a complete system, the polymer mixing unit is applied for polymer flocculant
mixing and feeding to the dewatering centrifuge to get the water as clean as
possible, to separate more fine solids under 5 microns.

TBM
is the short name for Tunneling Boring Machine, Tunnels of less than a metre or
so in diameter are typically done using trenchless construction methods or
horizontal directional drilling rather than TBMs.

We
ever designed a containerized dewatering unit for Tunneling project with the
same application, the main purpose is to get clean water, and dry solids for
disposal. The polymer mixing unit can be installed inside the container
together with GN big bowl decanter centrifuge, by this way, it is convenient
for movement, also it can be located on the skid without standard shipping
container for cooling and easy maintenance, also the cost is much cheaper. We
can make it customized to meet the client’s requirement.

There
are 3 parts in the TBM slurry separation plant: Solids removal unit, polymer
mixing and dosing unit, dewatering unit with dewatering centrifuge. We provide
various options for solids removal unit/ mud cleaning unit, depends on your
required electricity power consumption and budget, we can provide 2-phase
cleaning compact design( double deck shale shaker + desander cone or double
deck shaker + desilter cone) or 3-phase cleaning premium mud cleaning system,
with shale shaker, mud cleaner( shaker, desander cone, desilter cone 3 in 1).

Our
dewatering unit can be applied for both powder polymer and solution polymer,
with pre-humidifyng
system for the powder and dosing system.

We can make the dewatering centrifuge on the
same skid with the dewatering unit or separately. If you are interested in more
details, pls contact GN sales.

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