decanter centrifuge | GN Decanter Centrifuge

Two Sets Close Loop Drilling Waste Management System for Domestic Oilfield Project

Because of the more strict environmental regulation
on drilling project that no cuttings without treatment are allowed to be
discharged into directly into the pit and buried, almost all drilling sites
equip themselves with drilling waste management system.
In 2015, GN solids control, the international brand of solids control and drilling
waste management, has delivered to over 30 sets drilling waste management
equipment to China’s drilling site. Recently, another two sets of drilling
waste management equipment starts to operate in China’s oilfield drilling site.
For the drilling waste management, high G shaker is generally used to treat water based mud
cuttings as the first stage, and then the liquids will be fed into the high
speed decanter centrifuge for second stage treatment; vertical cutting dryer is
generally used to treat oil based mud cuttings as the first stage, and also the
second stage treatment machine is decanter centrifuge.

Since GN firstly designed and manufactured
the vertical cutting dryer in 2011, GN has many successful case now. One of
them is the oilfield service Giant Baker Huges ,who took 4 sets complete
drilling waste management system from GN and applied it in Siberia with very
low temperature at minus 40.
More cases: http://www.gnsolidscontrol.com/drilling-fluids/
More videos: http://www.gnsolidscontrol.com/drilling-video/

With our 650,000 SF facility and advanced
processing machineries, GN produce the state of the art solids control and
waste management products. GN Solids Control is the first API certified
solidscontrol company in China, and GN is also certified by Europe DNV CE and
Russia TP RU as well as HSE system. Since GN Solids Control market position is
the middle and top level clients at home and abroad. So our main competitors
are from US and Europe, this put us to make the best quality products withthe
best material and technology

4 sets GNLW452 Centrifuge for fast barite recovery

GN Solids Control decanter centrifuge is professional for
oil & gas drilling, horizontal directional drilling, coal bed methane
drilling, diamond drilling etc. The centrifuge is liquid / solids 2-phase
separation equipment, the separation point is 2 to 5 microns.

Recently, we have customer from CPP, China petroleum
pipeline bureau company, the largest HDD contractor from China. They just buy 2
sets of
500gpm mud system, each system equipped with 1 sets shaker with 2 ea desander
cones, 1 set shaker with 12ea desilter cones, 2 sets middle speed centrifuge
GNLW452. The middle speed centrifuge standard model is fixed speed centrifuge
with 1800RPM. The customer like customized centrifuge with variable speed
control panel. We company customized the fixed speed centrifuge to variable
speed centrifuge by adding one variable speed control panel with ABB transducer
inside to make the speed changeable. 1 set of GNLW452 centrifuge with treating
capacity 40m3/h, two sets means treating capacity 80 m3/h at same time. In this
case, the barite material in drilling mud can be take out by centrifuge very
fast. Thus, the total working efficiency will be promoted in a high level.

Except of GNLW452 middle speed centrifuge, GN
Solids Control also have other model centrifuge for other application.

1) GNLW363CG or GNLW363CG-VFD is high speed centrifuge,
fixed speed / variable speed two options for customer. This centrifuge is
professional for drilling mud weight reduce for solids control. Or it can be
used for drilling
waste management to remove the very fine solids from drilling waste, thus to
reduce the oil on cuttings (OOC).

2) GNLW553 big bowl big capacity centrifuge. If in some
certain case, the customer don’t want to use desander unit or desilter unit,
the customer may only use shale shaker & centrifuge for fast drilling. This
kinds of combination can also reduce the power consumption in a large degree. Because
when you use desander units or desilter units, big pump with electric motor is
generally needed.

GN other model centrifuge, like GNLW223 baby centrifuge,
GNLW453 big bowl centrifuge is also available.

Related Arciels:

Dual Centrifuge mud system for CPP

GN Solids Control have many
production project for CPP from year of 2010. CPP is the largest HDD contractor
from China and engaged in China and overseas market. GN Solids Control compact
mud system and centrifuge is also working in many different jobsite with CPP
teams.

Beginning of this year, we got 4 sets 500gpm mud recycling system for
CPP. Different from former system configurations, this time CPP require 2 sets
variable speed middle speed centrifuge for each system. In this case, they can
recover the barite from used drilling fluids fast. The centrifuge is GNLW452
big bowl middle speed centrifuge with variable speed control panel to adjust
the speed flexible.

Except for 2 sets middle speed centrifuge,
other solids control equipment including:

1) 1 set Mud desanding cleaner GNZJ705-2S, with double deck shale
shaker GNZS705. It is for the first and second stage separation.

2) 1 set Mud desilter cleaner GNZJ705-12N,
with double deck shale shaker GNZS705.
It is for the first and third stage separation.

3) 2 sets mud agitator installed on
centrifuge tank compartment, to avoid drilling mud settle down.

After double checking the whole system, you
can find the HDD mud system with 2 sets shale shaker, 1 set desander assembly ,
1 set desilter assembly, 2 sets centrifuge. The treating capacity is much
bigger and the drilling mud can go to desanding cleaner and desilter cleaner at
same time. The drilling fluids go into this two units via distribution box and
controlled by flange and valves. Generally, the actual treating capacity can
reach to about 800gpm to 1000gpm.

GN Solids Control is famous solids control
equipment mfg from China with rich experience in compact mud system
fabrication. The different mud system capacity including: 500gpm mud system,
800gpm mud system and 1000gpm mud system.

Except for small mud system for HDD, CBM,
TBM etc, GN also produce lots of oil drilling mud system every year for oil
drilling companies. If you need more support, pls contact us freely.

Maintenance highlights of decanter centrifuge

While
operating well drilling, the drilling
fluid centrifuge machinery is one of the central
equipment that is often used, its purpose is mainly used for separating fine
solid debris whose diameter size are 2-7 μm from the drilling fluid. By using the drilling fluid centrifuge to
remove solid debris, it can effectively well lubricate and protected the drill bit;
it also has a very important role of improving drilling bit speed. With the oil
drilling industry ways and the technologies are getting mature; the drilling
fluid centrifuge manufacturing technology has been greatly improved as well.
However, there are some inherent mechanical issues if not solved it will give
the operators many function issues.

We as
manufacturer often have seen operators encounter issues below:

1. Bowl fault.
2. Consumable parts (inlet pipe, shockproof strip) problem.
3. Excessive vibration wile machine is currently working.
4. Outlet blocking by solids wish to remove from fluid.
5. Explosion-proof plug damage.
6. Centrifuge scroll damage.
7. Bearings failure while process of operation.
8. Drilling fluid centrifuge hoses damage.

We as
manufacturer suggest below if such issues operators encounter:

Operators
must understand that regular maintenance on the centrifuge such as regular
cleaning the inlet and outlet by filling water or diesel depends what kind of
fluid it needs process. It is also
crucial that add grease to the bearing parts to ensure proper lubrication.

Operators
needs regularly inspect often- damaged parts on the drilling fluid centrifuge,
such like hoses. In order to ensure the process in the use of these parts in
normal way this influences the production. Finally, electronic parts of the
centrifuge are working the best by running certain period of time frame (like
none-stop for hours). It needs, reduce the rapid turn on and off of the
centrifuge. If properly operate the centrifuge like mention above, then
operators will find out centrifuge failure rate will be greatly reduced during process
the drilling fluid.

Related Arciels:

The 5 steps purify drilling mud

Drilling mud purifications
is the basic to insure the function of drilling bit works properly and safely
for both oil rig equipments and many operators working around the clock in the
drilling field. Needless to say, it is a
very costly operation if one or many steps of drilling operation go wrong, It
will leads operation cost of drilling rig go double in very short amount of
time that leads to increases of operation cost and late leads to increase the
production cost of oil.

The first level of purification

The mud feed in the shale shaker. The allocation drilling fluid
enter into the bottom of the drilling well under the foundation of the drilling pump
and carry drilling debris return the ground,
through the feeding enter into the shale shaker, the larger solid debris in drilling fluid are filtered through shale
shaker screen.

The second level of purification

When drilling fluid have debris and also contain gas, The use of vacuum degasser remove the gas which in the
drilling fluid and can recover the density of drilling fluid, calm the drilling fluid viscosity.

The third level
of purification

The drilling fluid is disposed by two level purification enter into the desander. Through the desander feed into the liquid pump, the harmful sold phase which the diameter
is above 40-60um is separated in desander.

The fourth level of purification

The drilling fluid is disposed by the three level purification enter into the desilter
through the desilter feed into the liquid pump, the harmful sold phase which the diameter is above
15-40um is separated in desilter

The fifth level of purification

The drilling is disposed by the four level purification enter into the decanter centrifuge through the centrifugal feed liquid pump, the
small harmful sold phase particles are separated in decanter centrifuge