Author: gnadmin

As the leader of Solids Control and waste management system
and equipment manufacturer in China, GN Solids Control has designed many mud
recycling systems for world leading HDD companies or HDD contractors, who are
more well-known than GN Solids Control itself. CPP ( China Petroleum Pipeline
Bureau ) is one of GN’s old customers, many of GN’s equipments are going to
many countries of the world.

At the beginning of this year, although the oil market is
down because of the crude oil price, CPP ordered 8 complete high standard self
contained mud recycling systems from GN. Below is the picture of such systems,
now 2 sets of them are finished and already dispatched from factory. In fact,
these mud recycling systems are higher than GN’s standard highest
configuration. They are of 500GPM, per China specifications, 120 cubic meters
per hour, which is the most common model.

This design is combined of 2 tanks, and several
compartments. On skid of first tank, there are 2 main equipments, GNZY705E-Y10N
and GNZY705E-Y2S, they are kind of mud cleaners with double deck shale shaker. The
lower deck of shaker is like a shale shaker for the first stage treatment
before the desander cones. While the desander cones and the upper deck shaker
is the second stage treatment, same as the GNZY705E-Y10N, the desilter cones
also have a drying shaker.

The second tank is for further treatment, and there are 2
sets of decanter centrifuges on the second tank’s skid. GNLW452-VFD big bowl
centrifuge and the VFD control panels, the largest particle size in the
drilling mud from the first tank is no larger than 10 microns. After the
treatment of the 2 VFD centrifuges, the solid particles in the drilling mud is
no larger than 2 microns. Just because the 2 decanter centrifuges, this mud
recycling system is of higher configuration than normal.

If you need more information about that, contact us
freely.

As the demands for environment protecting
is much higher than before in everywhere of the world, only a solids control
system used for the drilling rig is not enough for treating the drilling
cuttings. In case of water based mud drilling cuttings further treatment, there
is a zero-discharge system including a so called drilling waste management
system and a dewatering unit.

In a waste management system, there is an
auger to collect drilling cuttings from the solids control system, for
collecting and transporting the cuttings discharged from the solids control
system. And another auger with is slope, for feeding the cuttings into the
waste management system, always a high-G shale shaker or a vertical cuttings
dryer. Then the treated liquid from the first treating equipment will be
further treated by a decanter centrifuge, the waste management centrifuge.

After a long while, some solids phase
particles are smaller and smaller than before, too small to be separated out by
a 2-5 microns’ centrifuge. Then comes the dewatering unit, constructed with a
flocculation unit including PAM dissolving system, dosing and electric control
for PAC, dosing pumps, some agitators, tanks and a container for installing all
of above. After the flocculation step, the fine particles become larger ones,
at least large enough for being separate out by centrifuge.

GN is cooperating with many mud companies
and mud service companies, who don’t only use the waste management systems, but
also the dewatering units for their services. Some of them are making their own
dewatering units and buying centrifuges from GN for their package. Sure in the
future GN will provide more and more centrifuge in different fields for
different applications.

GN Solids Control, first API certified Solids Control manufacturer in China, has enlarged its product line to waste management systems by designing out the first vertical cuttings dryer years ago and established the best quality centrifuge producing workshop. After years of experiences, GN Solids Control has become the number one solids control and waste management system manufacturer and supplier in China, and got a good fame in world market.

Before last year, GN’s waste management systems are mostly based on the three main equipments, procedures are that end user got technical information of GN’s equipments and discuss the layout of each one of them including the tank and augers. But after years of designing, GN summarized the cases and designed most popular 2 designs as standard solution, which could cover most of jobsite cases, with treating capacity of 40 cubic meter per hour.

Who used GN Waste Management Systems before? See links below of jobsite videos to have more information:

1. Baker Hughes has purchased several such systems form GN, which are now working in their Jobsites in a cold area. That shows that such systems could be used in extreme freeze weather.
2. Same drilling cuttings waste management system is working in Europe, in Cyprus.
3. This system is also working at Shell’s jobsite in southwest China. This systems is also customized with the end user’s color.
4. GN’s system also sailed to Africa, in Ghana, details see here on our website.

For more technical information about this system, welcome to see the detailed specifications in catalogs for GNCD930 vertical cuttings dryer and GNLW363CG-VFD decanter centrifuges and also auger/ screw conveyers and the 7.5kw screw pump for feeding the centrifuge.

Don’t worry about the transportation for such a big and useful system. In fact it could be transported to oversea countries by means of container with the equipments dismantled from tanks and easily to transported by trailer even with equipments on.

For more information, contact GN sales freely.

As is known to all and recognized by more
and more people, a waste management system is more and more important for an
oil and gas drilling jobsite. In some countries, there are strict laws that
without a drilling waste management system,
the drilling rig is not allowed to start.

Nowadays, the most popular waste management
system is combined by a vertical cuttings dryer and a high speed decanter
centrifuge. The vertical cuttings dryer is working like a washing machine’s
drying process, and the liquid phase discharged by the vertical cuttings dryer
falls into a tank under the cuttings dryer, and then transferred to the
centrifuge for further treating.

GN Solids Control is very professional in
manufacturing such waste management systems. Just in year 2014, GN has produced
tens of similar systems with one of GNCD930C/CVFD vertical cuttings dryer
and a GNLW363CG/CG-VFD decanter centrifuge.
Such systems are working well at jobsites of many countries and places,
including Shell’s and Baker Huges’jobsites.

Although all such systems are for further
separating the drilling cuttings discharged by solids control system in former
phase and they are nearly same, but since each jobsite is different, the
feeding method differs a bit. Per the layout of jobsite and the material
conditions, there are mainly 3 kinds of feeding methods:

1.      Using
a hose pump for transporting the material into the vertical cuttings dryer. A
hose pump itself is small in size. It has some self suction function, but not
so common as following two methods.

2.      Using
a screw conveyor (auger) and a screw pump for feeding the
vertical cuttings dryer.

3.      Using
two screw conveyors for feeding, one is horizontal and the other is a slope
one.

In both above mentioned methods, the first
screw conveyor could have a hopper for collecting drilling cuttings.

No matter which method is chosen for a
certain jobsite, it depends on the jobsites’ space and requested layout, and
also affected by material condition as the density and viscosity. May you have
requests for this, welcome to contact us freely and our engineer will make out
for you the most suitable solution.